Met One Instruments GAS-1030 Serinus 30 Carbon Monoxide Analyser User Manual

June 10, 2024
Met One Instruments

Met One Instruments GAS-1030 Serinus 30 Carbon Monoxide Analyser

Met One Instruments-GAS-1030-Serinus-30-Carbon-Monoxide-
Analyser

Product Information

GAS-1030 Carbon Monoxide Analyzer
The GAS-1030 Carbon Monoxide Analyzer is a Met One instrument that is designed to measure the concentration of carbon monoxide gas in the air. This analyzer meets the strictest quality and performance requirements expected of Met One equipment. The product version is 3.3 and all the information presented in the user manual is current, including analyzer specifications and operating principles.

Specifications

The following are specifications for the GAS-1030 Carbon Monoxide Analyzer:

  • Measurement Range: 0-1000 ppm
  • Accuracy: ±3% of reading or ±2 ppm, whichever is greater
  • Response Time: T90 < 60 seconds
  • Warm-up Time: 15 minutes
  • Operating Temperature: 0-50°C
  • Operating Humidity: 0-95%, non-condensing

Installation/Decommission

Before installation, perform an initial check to ensure that the analyzer is in good condition. The analyzer should be installed on a stable surface with adequate ventilation and away from sources of electromagnetic interference. The instrument setup involves connecting the power cord, gas sample tubing, and communication cables. Refer to the Installation Notes section for detailed instructions.

Operation

After installation, allow the analyzer to warm up for at least 15 minutes before taking any measurements. The measurement range is from 0-1000 ppm with an accuracy of ±3% of reading or ±2 ppm, whichever is greater. Refer to General Operation Information section for detailed instructions on measurement and operation.

Communications

The GAS-1030 Carbon Monoxide Analyzer can communicate through RS232, USB, or TCP/IP network communication. The instrument has an internal logging feature that can be configured to store data.
Refer to the Communications section for detailed instructions on communication and logging data.

Calibration

Calibration of the GAS-1030 Carbon Monoxide Analyzer is necessary to ensure accurate measurements. Calibration involves adjusting the analyzer to a known concentration of carbon monoxide gas. Refer to the Calibration section for detailed instructions on calibration.

USER MANUAL
GAS-1030
Carbon Monoxide Analyzer
Version 3.3
metone.com

Met One Instruments is now part of the Acoem Group. The Met One range of gas analyzers was originally developed by Acoem under the brand name Serinus®.
For the purposes of expediting the availability of Met One gas analyzers to Met One customers around the world; Met One Instruments have chosen to use the original Serinus® operating manual.
Although the name of the Met One instrument is different, the analyzer itself has remained unchanged and meets the strictest quality and performance requirements expected of Met One equipment. All the information presented in this manual is current, including analyzer specifications and operating principles.
Met One will update this manual to reflect the new branding convention in due course.

Serinus® 30 User Manual 3.3
Manufacturer’s Statement
Thank you for selecting the Ecotech Serinus® 30 Carbon Monoxide Analyser. The Serinus series is the next generation of Ecotech designed and manufactured gas analysers. The Serinus 30 will perform CO measurements over a range of 0 – 200 ppm with a lower detectable limit of 40 ppb. This User Manual provides a complete product description including operating instructions, calibration and maintenance requirements for the Serinus® 30 Carbon Monoxide Analyser. Reference should also be made to the relevant local standards which should be used in conjunction with this manual. Some of these standards are listed in this manual. If, after reading this manual you have any questions or you are still unsure or unclear on any part of the Serinus® 30, please do not hesitate to contact Ecotech or your local Ecotech distributor.
Please help the environment and recycle the pages of this manual when you have finished using it.
Notice
The information contained in this manual is subject to change without notice. Ecotech reserves the right to make changes to equipment construction, design, specifications and/or procedures without notification. Copyright © 2021. All rights reserved. Reproduction of this manual, in any form, is prohibited without the written consent of Ecotech Pty Ltd.
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Safety Information

Read all the safety information in this section prior to using the equipment. To reduce the risk of personal injury caused by potential hazards, follow all safety notices and warnings in this documentation.
The following internationally recognised symbols are used on Ecotech equipment:
Table 1 ­ Internationally Recognised Symbols

Protective conductor terminal

IEC 60417-5019

Alternating current Caution, hot surface

IEC 60417-5032 IEC 60417-5041

Caution, risk of danger to user and/or equipment Refer to any accompanying documents
Caution, risk of electric shock

ISO 7000-0434 ISO 3864-5036

These symbols will also be found throughout this manual to indicate relevant safety messages.
Note: Notes are used throughout this manual to indicate additional information regarding a particular part or process.
If the equipment is used for purposes not specified by Ecotech, the protection provided by this equipment may be impaired.

Foreword

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Serinus® 30 User Manual 3.3
Important Safety Messages
Disconnect Power Prior to Service Hazardous voltages exist within the instrument. Do not remove or modify any of the internal components or electrical connections whilst the mains power is ON. Always unplug the equipment prior to removing or replacing any components. Replacing Parts Replacement of any part should only be carried out by qualified personnel, using only parts specified by Ecotech, as these parts meet stringent Ecotech quality. Mains Supply Cord Do not replace the detachable mains supply cord with an inadequately rated cord. Any mains supply cord that is used with the instrument must comply with the safety requirements (250 V/10 A minimum requirement). A mains power cord with a protective earth conductor must be used. Ensure that the mains supply cord is maintained in a safe working condition. Do Not Expose Equipment to Flammable Gases This equipment is not intended for use in explosive environments, or conditions where flammable gases are present. The user should not expose the equipment to these conditions. Do not introduce any flammable gases into the instrument, otherwise serious accidents such as explosion or fire may result. Electromagnetic Compliance The instrument lid should be closed when in normal operation, to comply with EMC regulations. Means of Lifting/Carrying Instrument This instrument is a heavy and bulky object. Two persons should lift/carry the object, otherwise use proper lifting equipment. Proper lifting techniques should be used when moving the instrument. Internal Components Do not insert a rod or finger into the cooling fans, otherwise injury may result. Do not energise the instrument until all conductive cleaning liquids, used on internal components, are dried up.
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Warranty
This product has been manufactured in an ISO 9001 facility with care and attention to quality.
The product is subject to a 24-month warranty on parts and labour from date of shipment. The warranty period commences when the product is shipped from the factory. Lamps, filters and other consumable items are not covered by this warranty.
Each instrument is subjected to a vigorous testing procedure prior to despatch and will be accompanied with a parameter list and a multipoint precision check.

Foreword

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Serinus® 30 User Manual 3.3
Service & Repairs
Our qualified and experienced technicians are available to provide fast and friendly service between the hours of 8:30 am – 5:00 pm AEST Monday to Friday. Please contact either your local distributor or Ecotech regarding any questions you have about your instrument.
Service Guidelines
This manual is designed to provide the necessary information for the setup, operation, testing, calibration, maintenance and troubleshooting of your instrument. Should you still require support after consulting the documentation, we encourage you to contact your local distributor for support. To contact Ecotech directly, please e-mail our Technical Support Specialist group at support@ecotech.com or to speak with someone directly: Please dial 1300 364 946 if calling from within Australia. Please dial +61 3 9730 7800 if calling from outside of Australia. Please contact Ecotech and obtain a Return Material Authorisation (RMA) number before sending any equipment back to the factory. This allows us to track and schedule service work and to expedite customer service. Please include this RMA number when you return equipment, preferably both inside and outside the shipping packaging. This will ensure you receive prompt service. When shipping instrumentation, please also include the following information:
Name and phone number Company name Shipping address Quantity of items being returned Model number/s or a description of each item Serial number/s of each item (if applicable) A description of the problem and any fault-finding completed Original sales order or invoice number related to the equipment Shipping Address: Attention Service Department Ecotech Pty Ltd 1492 Ferntree Gully Road, Knoxfield, VIC, Australia 3180.
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Product Compliance and Approvals
The Serinus® 30 Carbon Monoxide Analyser, as manufactured by Ecotech Pty Ltd, complies with the essential requirements of the directives listed below (including CE compliance). The respective standards have been applied:

Low Voltage Directive (LVD) Directive 2014/35/EU

EN 61010-1:2010

Safety requirements for electrical equipment, for
measurement, control and laboratory use ­ General requirements

Electromagnetic Compatibility (EMC) Directive 2014/30/EU

EN 61326-1:2013

Electrical equipment for measurement, control and laboratory use ­ EMC requirements ­ General requirements

Radio Equipment Directive (RED) 2014/53/EU

EN 300 328 V2.1.1

Wideband transmission systems ­ Data transmission equipment operating in the 2.4 GHz ISM band and using wide
band modulation techniques

Regulatory Compliance Mark (RCM) ­ Australia

AS/NZS 4268:2017

Radio equipment and systems ­ Short range devices ­ Limits and methods of measurement

ARPANSA Radiation Protection Standard

Maximum Exposure Levels to Radiofrequency Fields ­ 3 kHz 300 GHz ­ Radiation Protection Series Publicaiton No. 3: 2002

This analyser is also certified to a number of measurement standards ­ refer to Section 1.2.8.

Foreword

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Serinus® 30 User Manual 3.3

Manual Revision History

Manual PN: Current revision: Date released: Description:

M010027 3.3 9 August 2021 User Manual for the Serinus® 30 Carbon Monoxide Analyser

This manual is the full user manual for the Serinus® 30 Carbon Monoxide Analyser. This manual contains all relevant information on theory, specifications, installation, operation, maintenance and calibration. Any information that cannot be found within this manual can be obtained by contacting Ecotech.

This manual uses cross reference links extensively throughout this manual. The hot keys below will greatly reduce the amount of time scrolling between references:

You can access the links by pressing the following: > CTRL + LEFT MOUSE CLICK: Move to the link location

You can switch between links by pressing the following: > ALT + LEFT ARROW KEY: Returns you to previous Link > ALT + RIGHT ARROW KEY: Swaps back
Table 2 ­ Manual Revision History

Edition 1.0 1.1 1.2
1.3
1.4

Date October 2008 February 2009 February 2009
November 2009
September 2010

Summary
Initial release
Updated communications
New maintenance procedures Updated instrument set-up Small corrections
Updates to menu system Serinus downloader software Internal pump option Advanced parameter list
CE conformity added Updated parts list Pressurised zero/span valve added Updates to rack mount option Updates to Serinus downloader Update to 25 pin I/O Update to network communication Analog inputs Network adapter menu

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Edition 2.0
2.1 2.2 3.0 3.1 3.2 3.3

Date July 2012
March 2013 November 2013 December 2014 April 2016 June 2018 August 2021

Summary
New chassis Update menu system Add Bluetooth menu Serinus Remote Android App Rack mount procedure update Analog output calibration
Update of manual drawings, pictures and content. Format updated.
Formatting updates Addition of Airodis installation steps
Auto-Ranging Power Supply added Main Controller and Rear Panel PCAs changed.
Trace option section
Safety Information updated Product Compliance & Approvals updated
Manual update to firmware 4.0.7 Rev. Q board. A number of changes to descriptions, procedures and menu items. Standardization of naming convection applied.

Foreword

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Serinus® 30 User Manual 3.3
This page is intentionally blank.
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Introduction

1.1 Description

The Ecotech Serinus 30 Carbon Monoxide Analyser uses Non-Dispersive Infrared Spectrophotometry (NDIR) technology to measure CO in ambient air, in the range of 0 – 200 ppm.
The U.S. EPA has designated the Serinus 30 Carbon Monoxide Analyser as a reference method and TÜV has designated it as an EN approved instrument.
This section will describe the specifications of the instrument as well as the main components and techniques used to obtain stable gas concentration readings.

1.2 Specifications

1.2.1

Measurement

Range

0 – 200 ppm (autoranging)

U.S. EPA designated range: Any full scale range between 0 – 50 ppm

TÜV EN certification range: 0 – 100 ppm

Lower Detectable Limit

< 0.04 ppm (40 ppb), with Kalman filter active

1.2.2

Precision/Accuracy

Precision

20 ppb or 0.1% of reading, whichever is greater

Linearity

Better than ± 1% of full scale (0 – 50 ppm); ± 2% of full scale (0 – 200 ppm), from best straight-line fit

Noise at Zero

< 0.02 ppm or 0.2% of concentration reading whichever is greater

Response Time

60 seconds to 95%

Sample Flow Rate

1.0 slpm

Introduction

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Serinus® 30 User Manual 3.3

1.2.3

Calibration

Zero Drift

Temperature dependant:

0.01 ppm per °C

24 hours:

< 0.1 ppm

30 days:

< 0.1 ppm

Span Drift

Temperature dependant:

0.05% per °C

24 hours:

0.5% of reading or 0.1 ppm whichever is greater

30 days:

0.5% of reading or 0.1 ppm whichever is greater

1.2.4

Power

Operating Voltage

100 – 240 VAC (± 10%)

50 – 60 Hz

Overvoltage Category II

Power Consumption

190 VA (max at start-up)

115 VA (nominal)

1.2.5

Operating Conditions

Ambient Temperature:

0 – 40 °C (32 – 104 °F)

Relative Humidity:

10 – 80% (non-condensing)

Pollution Degree:

2

Sample Pressure Dependence: 5% change in pressure produces less than a 1% change in reading

Maximum altitude1:

2000 m above sea level

1 For higher altitude contact Ecotech for support/assistance.
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1.2.6

Communications

Analog Output

Three menu selectable current or voltage analog outputs.
Current output of 0 – 20 mA, 2 – 20 mA or 4 – 20 mA. Voltage output of 0 – 5 V, with menu selectable zero offset of 0 V, 0.25 V or 0.5 V. Voltage output of 0 – 10 V (configured using jumpers (JP3) on rear panel PCA). Range: User scalable min and max range for analog output to suit application.

Analog Input Three analog voltage inputs (0 – 5 VDC) CAT I rated.

Digital Output RS232 port #1: Normal digital communication. RS232 port #2: Multidrop port used for multiple instrument connections on a single RS232. USB port connection on rear panel. TCP/IP port (optional). USB memory stick (front panel) for data logging, event logging, parameter and configuration storage. 25 pin connector with discrete status and user control. o Eight Digital Outputs, open collector max 400 mA each @ 12 VDC (max total output 2 A).
o Eight Digital Inputs, 0 – 5 VDC, CAT I rated.

1.2.7

Physical Dimensions

Case Dimensions

Rack length (front to rear):

622 mm (24.5″)

Total length (with latch release): 662 mm (26.1″)

Chassis width:

418 mm (16.5″)

Front panel width: Chassis height:

429 mm (16.9″) 163 mm/Uses 4 RU (6.4″)

Front panel height:

185 mm (7.3″)

Weight:

20.2 kg

1.2.8

Certifications

U.S. EPA approval (RFCA-0509-174)

EN approval TÜV (0000040203-02)

Introduction

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Serinus® 30 User Manual 3.3

EN approval MCERTS (MC100166/07) Australian Standard (AS 3580.7.1-2011) Russian approval (56262-14) French approval (LSCQA) Ukraine approval (12/3/B/24/295-17) Chinese Pattern Approval (JJF1364-2012) Korean approval NIER (AACMS-2017-02)

1.3 Nomenclature

CO Span Zero Background Multipoint Precision Check Calibration Zero Drift Automatic Zero Zero Air
External Span Source Sample Air Exhaust Air
ID and OD Multidrop Bootloader

This is the abbreviation for carbon monoxide.
A gas sample of known composition and concentration used to calibrate/check the upper range of the instrument (carbon monoxide).
Zero calibration uses zero air (CO scrubbed ambient air) to calibrate/check the lower range of the instrument.
Draws air from the background port to compensate for changes in the IR source and background interferences.
A procedure to verify the linearity of the instrument.
The process of adjusting the instrument to ensure that it is measuring the correct concentration.
The change in the instrument’s response to zero air over a period of continuous unadjusted operation.
The automatic zero performs a zero check at a specified time through a 24hour cycle which adjusts the lower limit of the instrument.
Is purified air in which the concentration of CO is < 50 ppb with water vapour of less than 10% RH. The internal CO-CO2 catalytic converter uses platinum impregnated alumina beads heated to 90 °C as a conversion agent to achieve this under ambient conditions.
Span gas that is delivered via an external accredited cylinder (e.g. NATA/NIST).
Sample air is defined as the sample before it has entered the Measurement cell, as distinguished from the exhaust air.
Exhaust air is the sample air after it has passed through the reaction/measurement/detection cell and is moving towards being expelled from the instrument.
These are measurements of tubing. ID is the internal diameter of tubing; OD is the outer diameter.
A configuration of multiple instruments connected via the same RS232 cable.
A program that checks whether the current firmware is valid and executes the instrument start-up. The Bootloader can be entered by pressing the `+’ key on the front keypad during the first 1/2 second after power ON and

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PCA IR Slpm

following the prompts. The Bootloader enables various low level recovery tools, including updating the firmware from a USB stick.
Printed Circuit Assembly. An electronic circuit mounted on a printed circuit board to perform a specific electronic function.
Infrared. The region of the optical spectrum with a wavelength of around 4.7 microns.
Standard litres per minute. This is the flow referenced to standard temperature and pressure conditions. For the purposes of this manual, all flows are referenced to 0 °C and 101.3 kpa (1 atm).

1.4 Background/Theory

Carbon monoxide poisoning is the most common type of fatal poisoning in many industrialised countries3. Carbon monoxide is a colourless, odourless and tasteless gas caused by the incomplete combustion of hydrocarbon fuels.

Carbon monoxide is a toxic gas to the human body, when inhaled it binds to haemoglobin, myoglobin and mitochondrial cytochrome oxidase reducing oxygen storage, transport and respiration in these organelles.

This can affect humans by causing low level symptoms such as headaches, nausea and dizziness leading up to vomiting and loss of mental/muscular control at high exposure and death in extreme cases.

1.4.1

Measurement Theory

The measurement of carbon monoxide is completed via the following principles and measurement techniques:

CO absorbs infrared radiation (IR) at a wavelength near 4.7 microns. IR radiation (at 4.7 microns) is passed through a five-metre folded path length through sample air. The strength of the signal received is proportional to the amount of CO in the sample. A band pass filter is fitted to the signal detector to ensure only light near 4.7 microns wavelength is detected.

3 Toxicology. 2002 Nov 15;180(2):139 – 50
Introduction

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Serinus® 30 User Manual 3.3

Figure 1 ­ Measurement Cell Theory
A gas filter correlation wheel is combined with this system. This wheel contains three parts to increase measurement accuracy: CO, N2 and the mask.
The CO window contains saturation (40%) of CO which acts as a reference beam ­ absorbing a known amount of light.
The N2 window, containing 100% N2, does not absorb IR at 4.7 microns at all and is used during normal CO measurement.
The mask totally blocks the light source and is used to determine background signals, the strength of other signals relative to each other and the background.

Figure 2 ­ Correlation Wheel

1.4.2

Kalman Filter Theory

The digital Kalman filter provides an ideal compromise between response time and noise reduction for the type of signal and noise present in ambient air analysers.

The Kalman filter enhances measurements by modifying the filter time base variable, depending on the change rate of the measured value. If the signal is changing rapidly, the instrument is allowed to respond quickly. When the signal is steady, a long integration time is used to reduce noise. The system continuously analyses the signal and uses the appropriate filtering time.

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1.5 Instrument Description
The major components of the Serinus 30 are described below:

Figure 3 ­ Internal Components Diagram

1.5.1

Calibration Valve Manifold

Refer to Figure 3 for the location of calibration valve manifold. The calibration valve manifold switches between sample, calibration and background gas.

Introduction

Figure 4 ­ Calibration Valve Manifold

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Serinus® 30 User Manual 3.3

1.5.2

Sample Filter Holder

Refer to Figure 3 for the location of sample filter holder. Within the sample filter holder is a particulate filter. The particulate filter is a Teflon 5-micron (µm) filter with a diameter of 47 mm. This filter prevents all particles larger than 5 µm from entering the measurement system that could interfere with sample measurement.

Note: The 5-micron filter element should be replaced on a regular basis.

Figure 5 ­ Sample Filter Holder

1.5.3

CO-CO2 Converter

Refer to Figure 3 for the location of CO-CO2 converter. The CO-CO2 catalytic converter uses platinum impregnated alumina beads heated to 90 °C as a conversion agent. The catalyst achieves conversion of 0 – 200 ppm CO to less than 0.1 ppm CO, even in the presence of up to 2% water.

Within the body of the CO-CO2 converter assembly, there is a heat exchanger used to precondition the sample gas up to temperature. The sample gas is then drawn into the measurement cell.

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Figure 6 ­ CO-CO2 Converter

1.5.4

Measurement Cell

Refer to Figure 3 for the location of measurement cell. The measurement cell consists of the following components:

Figure 7 ­ Measurement Cell

1.5.4.1

Cell

Refer to Figure 7 for the location of cell. The cell contains five mirrors that form a five-meter folded path length through the cell. The sample gas is drawn through the cell filling the chamber and the IR light travels through the sample. The Cell is maintained at a set temperature based on the cell set point, default is 50 °C. The cell pressure is monitored to compensate for pressure changes.

The mirror alignment in cell assembly is critical and is factory aligned. No attempt should be made to do a field adjust to the mirrors. Doing so will void the warranty.

CAUTION
Manually adjusting any of the mirrors or trying to access the internals of this assembly may result in damage and will void the warranty.

1.5.4.2

Source Timing Assembly

Refer to Figure 7 for the location of source timing assembly. The source timing assembly consists of the following:

Refer to Section 9.8.

Introduction

Figure 8 ­ Source Timing Assembly

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Serinus® 30 User Manual 3.3
IR Source The IR source emits broadband infrared radiation that irradiates the filter in the correlation wheel.
Figure 9 ­ IR Source Gas Filter Correlation Wheel Assembly The gas filter correlation wheel contains three segments: a N2 filled sapphire chamber, a CO filled sapphire chamber and a mask.
The N2 chamber allows all the IR radiation to pass through, which allows the radiation to be absorbed by CO in the measurement cell and readings to be recorded.
The CO filled chamber absorbs wavelengths sensitive to CO. The sample gas (containing CO) in the measurement cell does not receive CO specific IR radiation and the only detected signals registered by the IR detector are from background sources and interference.
The mask blocks all IR light entering the cell. This allows the intensity of the other two signals to be corrected for the detector response to no IR radiation.
Figure 10 ­ Gas Filter Correlation Wheel Assembly Opto-Detector The correlation wheel has four tabs that act as an opto electronic switch ensuring that the main controller PCA can determine accurate timing of the wheel and the segment currently exposed to the IR radiation.
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Motor Assembly

The motor that drives the correlation wheel is a 12 VDC Brushless motor.

1.5.4.3

Detector Assembly

Refer to Figure 7 for the location of detector assembly. The detector assembly consists of the following:

Figure 11 ­ Detector Assembly Narrow-Bandpass Filter The narrow bandpass filter allows only the CO sensitive portion of the IR radiation to pass through to the IR detector (4.7 microns) reducing noise and interference.
Figure 12 ­ Narrow-Bandpass Filter IR Detector The IR detector is a cooled lead selenide (PbSe) photoconductive IR detector. It creates an electrical signal when wavelengths centred at 4.7 microns reach it.

Introduction

Figure 13 ­ IR Detector

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Serinus® 30 User Manual 3.3
CO Detector PCA The detector PCA amplifies the signal from the IR detector and it includes the trim pot to adjust the detector gain.

Figure 14 ­ CO Detector PCA

1.5.4.4

Pressure Sensor PCA

Refer to Figure 7 for the location of pressure sensor PCA. The pressure sensor PCA has an absolutepressure transducer that is mounted on the measurement cell and sealed via a gasket. This allows the pressure sensor PCA to measure the sample air pressure in the measurement cell. This pressure reading is used to verify sample flow and correct measurement readings for pressure variations.

Figure 15 ­ Pressure Sensor PCA

1.5.4.5

Orifice and Sintered Filter

Refer to Figure 7 for the location of orifice and sintered filter. The critical orifice is made of a high precision stainless steel and sapphire, which is located Inside the Kynar fitting on the end of the measurement cell. The critical orifice is a simple device that operates at a set temperature and requires minimal maintenance, it will passively keep the volume flow rate constant at a known value.

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Figure 16 ­ Orifice and Sintered Filter

1.5.4.6

Heater and Thermistor

Refer to Figure 7 for the location of heater and thermistor assemblies. Two heater and thermistor assemblies are used in this instrument to keep the cell temperature at a stable and constant 50 °C. They are mounted on the top of the measurement cell and below the adjustable mirror mounting plate.

Figure 17 ­ Heater and Thermistor

1.5.5

Main Controller PCA

Refer to Figure 3 for the location of main controller PCA. The main controller PCA controls all the processes within the instrument. As well as the on-board microprocessor, it contains a battery backed clock, calendar analog to digital converters and many other circuits for signal processing and control. The ambient pressure and chassis temperature sensors are also located on this board. The main controller PCA is located above all other components within the instrument. It pivots on hinges to allow access to the components underneath.

CAUTION
Never place objects on top of the main controller PCA as it may result in damage.

1.5.6

Pneumatic Tubing

The pneumatic tubing inside this instrument is specially designed for use in Ecotech Serinus instruments. It has the flexibility of Silicone tubing with the added inner sheath of PVDF to prevent contamination of the sample. Care should be taken when removing and inserting the tubing into the barbed fittings.

Introduction

Figure 18 ­ Ecotech Tubing

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Serinus® 30 User Manual 3.3

1.5.7

Rear Panel

Figure 19 ­ Rear Panel

1.5.7.1

Rear Panel PCA

Refer to Figure 19 for the location of rear panel PCA. The rear panel PCA contains all the connections for external communications, including analog input, analog output, digital inputs, digital outputs, RS232, USB, and TCP/IP network connection (optional). Refer to Section 4.4.4 for details of all the jumper’s function.

1.5.7.2

Chassis Fan

Refer to Figure 19 for the location of chassis fan. The chassis fan is assembled to the back side of the instrument to maintain the Serinus 30 temperature. Fan filter is also installed with the fan to prevent the instrument from dust.

Note: Clean the chassis fan filter on regular interval (refer to Section 6.4.2).

1.5.7.3

Power Supply

Refer to Figure 19 for the location of power supply. The power supply is a self-contained unit housed in a steel case designed to meet all the relevant safety and EMC requirements. The new revision of power supply is different to the previous revision as there is no need to set the operating voltage switch because it is autoranging.
The output of the power supply provides +12 V, +5 V, -12 V and +3.3 V to the instrument.

ON/OFF Switch
The ON/OFF switch is located on the rear panel (bottom right facing the rear of the instrument), refer to Figure 20. It is part of the power supply.

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Figure 20 ­ Power ON/OFF Switch

1.5.8

Communications

Communication between the instrument and either a data logger, laptop or network can be performed with the following communication connections located on the rear panel (refer to Figure 21). These connections can be used for downloading data, onsite diagnostics, maintenance and firmware upgrades.

Figure 21 ­ Communication Connections RS232 #1
This port is designed to be used for simple RS232 communication.
RS232 #2
This port is designed to be used for simple RS232 communication or in multidrop configuration.
USB
This port can be used for instrument communications with equipment through a standard USB port.
TCP/IP Network (optional)
This port is best used for remote access and real-time access to instruments when a network is available to connect with.
Analog & Digital I/O
The analog/digital port sends and receives analog/digital signals to other devices. These signals are commonly used to activate gas calibrators or for warning alarms.
Analog Outputs
The instrument is equipped with three user definable analog outputs. The outputs are menu selectable as voltage output 0 – 5, 0.25 – 5 or 0.5 – 5 VDC or current output 0 – 20, 2 – 20 or 4 – 20 mA. The current output can also be configured as a voltage output of 0 – 10 V, by configuring the jumpers (JP3) on the rear panel PCA. Refer to Section 4.4 for more detail.

Introduction

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Serinus® 30 User Manual 3.3
Analog Inputs The instrument is also equipped with three analog voltage inputs (0 – 5 VDC CAT 1) with resolution of 15 bits plus polarity.
CAUTION Exceeding these voltages can permanently damage the instrument and void the
warranty. Digital Status Inputs The instrument is equipped with eight logic level inputs (0 – 5 VDC CAT 1) for the external control of zero/span calibration sequences.
CAUTION Exceeding these voltages can permanently damage the instrument and void the
warranty. Digital Status Outputs The instrument is equipped with eight open collector outputs, which will convey instrument status conditions and warning alarms such as no flow, sample mode, etc.
CAUTION Exceeding 12 VDC or drawing greater than 400 mA on a single output or a total
greater than 2 A across the eight outputs can permanently damage the instrument and void the warranty.
Bluetooth This allows for remote access of the instrument to any Android device with the Serinus Remote Application installed on it. It uses Bluetooth to control the instrument, view parameters, download data and construct real- time graphs.
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Installation/Decommission

2.1 Initial Check

Packaging
The Serinus® 30 is transported in packaging specifically designed to minimise the effects of shock and vibration during transportation. Ecotech recommends that the packaging be kept if there is a likelihood that the instrument is going to be relocated.
Note: The red plastic caps that seal the pneumatic connections during transport must be removed prior to operation.

Items Received With the delivery of the Serinus 30, user will receive the following: Table 3 ­ List of Items Received

Item Name Ecotech Serinus 30 analyser Green Ecotech Resources USB Stick Manual (hardcopy optional) USB Memory Stick USB Cable Keys for Slam Lock Data Sheet Drawing Sheet Power Lead (120 V) Power Lead (240 V)

Part No. E020030 H030137-01 M010027 H030021 COM-1440 C040007 C040006 C040008 C040009 C040010 C040054

Image Refer to Figure 22, callout 7. Refer to Figure 22, callout 10. Refer to Figure 22, callout 9. Refer to Figure 22, callout 8. Refer to Figure 22, callout 11. Refer to Figure 22, callout 12. Refer to Figure 22, callout 12. Refer to Figure 22, callout 2. Refer to Figure 22, callout 1. Refer to Figure 22, callout 3. Refer to Figure 22, callout 4. Refer to Figure 22, callout 5. Refer to Figure 22, callout 6.

*The power lead received depends on the power supply of the country (120 V or 240 V).
Note: Check that all these items have been delivered undamaged. If any item appears damaged, contact your supplier before turning the instrument ON.
Note: It is recommended to kept packaging material for transport or storage purpose.

Installation/Decommission

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Figure 22 ­ Received Item

Opening the Instrument Check the interior of the instrument with the following steps: 1. Refer to Figure 23. Remove the thumb screws located on the rear panel.
Figure 23 ­ Opening the Instrument ­ 1 2. Refer to Figure 24. Unlocked the slam lock using keys provided with instrument.
Figure 24 ­ Opening the Instrument ­ 2 3. Refer to Figure 25. Open the chassis lid latch by pressing in the slam lock located on the front panel.

Figure 25 ­ Opening the Instrument ­ 3
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Serinus® 30 User Manual 3.3
4. Refer to Figure 26. To completely remove the lid, slide the lid backwards until the rollers line up with the gaps in the track and lift the lid upwards to remove from the instrument.
Figure 26 ­ Opening the Instrument ­ 4 5. Check that all pneumatic and electrical connectors are connected. If not, reconnect. 6. Check for any visible and obvious damage. If damage exists contact your supplier and follow the
instructions in claims for Damaged Shipments and Shipping Discrepancies at the front of this manual.
2.2 Installation Notes
When installing the instrument, the following points must be taken into account: The instrument should be placed in an environment with minimal dust, moisture and variation in temperature (refer to Section 2.4 and 2.5 for specific approval set-up). For best results the instrument should be located in a temperature and humiditycontrolled environment (air-conditioned shelter). An enclosure temperature of 25 – 27 °C is optimum. Whether in a rack or placed on a bench, the instrument should not have anything placed on top of it or touching the case. Instruments should be sited with easy access to the front panel (instrument screen/USB memory stick) and to the rear panel (communication ports/pneumatic connections). It is recommended that the sample line be as short as possible and/or a heated manifold be used for sampling (minimising moisture condensation in the sample). Do not pressurise the sample line under any circumstances. Sample should be drawn through the instrument under atmospheric pressure. This should be achieved by either using the internal pump option (if installed) or an external vacuum pump connected to the exhaust port of the instrument. When supplying span gas, ensure the flow is approximately 1.5 slpm and excess is sufficiently vented. Undo the travel screws from the measurement cell as shown in the drawing supplied (refer to Section 2.3.4). The chassis fan on the rear panel should be kept free of any obstructions.
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Note: The power ON/OFF switch is accessible from the rear of the instrument only. Install the instrument so that the ON/OFF power switch is accessible.
2.3 Instrument Set-Up
After installing the instrument, the following procedures should be followed to ready the instrument for monitoring:

2.3.1

Figure 27 ­ Instrument Rear Panel Power Connections
CAUTION Hazardous voltages exist within the instrument. Do not remove or modify any of the internal components or electrical connections whilst the mains power is ON.
CAUTION Always unplug the equipment prior to removing or replacing any components.

CAUTION Do not replace the detachable mains supply cord with an inadequately rated cord. Any mains supply cord that is used with the instrument must comply with
the safety requirements (250 V/10 A minimum requirement).
CAUTION Ensure that the mains supply cord is maintained in a safe working condition.

CAUTION When connecting the mains power to the instrument, the following must be adhered to otherwise the safety and the reliability of the instrument may be
compromised.
A three pin mains power cord with a protective earth conductor MUST be used. The mains power outlet (wall socket) must be in the range of 100 – 240 VAC, 50 – 60 Hz.

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The mains power outlet must be protected by an earth leakage protection circuit. Refer to Figure 28. Connect the instrument’s power cord into the instrument and mains
power outlet.

Figure 28 ­ Connect Power Cord Refer to Figure 29. Turn ON the power switch.

Figure 29 ­ Turn ON Power Switch

2.3.2

Pneumatic Connections

The Serinus 30 has four pneumatic ports on the rear panel of the instrument, the Sample Port, the Calibration Port, the Exhaust Port and the Background Air Port. All tubing and fittings used should follow the instructions below:

Must be made of Teflon® FEP material, Kynar®, stainless steel, glass or any other suitably inert material.
Sample line should be no more than two meters in length with 1/8″ ID and 1/4″ OD. Sample inlet pressure should not exceed 5 kPa above ambient pressure. Tubing must be cut squarely and any burrs removed.

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Procedure 1. Refer to Figure 30. Remove all the dust plugs.

Figure 30 ­ Dust Plugs 2. Refer to Figure 31. Remove the sample port nut.

Figure 31 ­ Remove Nut 3. Inspect the ferrules inside the nut for correct orientation.

Figure 32 ­ Ferrules Correct Orientation
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4. Replace the nut loosely, only 2 or 3 threads, on the sample port.
Figure 33 ­ Replace Nut Loosely 5. Push the tubing into the end of the nut until you hit the tube stop inside the fitting.

Figure 34 ­ Insert Tube 6. Tighten clockwise until finger tight.

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Figure 35 ­ Tighten Nut

7. Nuts should be re-tightened when instrument reaches operating temperature. 8. Follow the same above procedure to connect calibration, exhaust line and background air line.
Sample Port
The sample port must be connected to an ambient source of sample air. When using a sample manifold the Serinus requires at least 1.5 slpm delivered to the sample manifold (1 slpm for measurement plus approximately 50% excess).
Calibration Port
The calibration port can be connected to the span/zero sources. It is recommended that a gas dilution calibrator (Ecotech’s Serinus Cal 1000, 2000 or 3000) be used with a cylinder of carbon monoxide (CO) to deliver precise concentrations of CO.
Note: All connections to this port should not exceed ambient pressure. A vent is required for excess span gas.
Exhaust Port
The exhaust port is where the measured sample, calibration gases and background air are exhausted from the instrument. The exhaust port should be connected to the vacuum pump using 1/4″ OD tubing. The P030004 240 V vacuum pump (P030005, 110 V) available from Ecotech, can be used to provide the required vacuum and flow for one Serinus 30 analyser as well as two other instrument such as a Serinus 10 or Serinus 50.
CAUTION Carbon monoxide (CO) is a toxic gas. It is recommended that exhaust air is expelled into an unoccupied area, as it contains trace levels of carbon monoxide. Furthermore, the exhaust must be a suitable distance from the sample inlet to
avoid influencing the ambient measurements.

Background Air Port

The background air port is used to supply air to the CO-CO2 converter (CO scrubber) within the instrument. This is used for backgrounds and internal zero calibration.

2.3.3

Communications Connections

There are a number of ways to communicate with the instrument, refer to Section 4 for detail.

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2.3.4

Instrument Set-Up

1. Refer to Figure 36. Open the lid and make sure the USB memory stick is installed.

Figure 36 ­ Installation of USB Memory Stick
2. Refer to Figure 37. Remove the travel screws from the measurement cell (store in a zip lock bag within the analyser).

Figure 37 ­ Travel Screw Locations 3. Refer to Figure 38. Check that the battery switch is turned ON at the main controller PCA.

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Figure 38 ­ Switching the Battery ON/OFF

4. Turn ON the instrument and allow the warm-up procedure to complete (refer to Section 3.1). 5. Set time and date (refer to Section 3.4.8). 6. Set the digital filter to desired setting (refer to Section 3.4.9). 7. Set the internal data logging options (refer to Section 3.4.23). 8. Set the analog and digital inputs and outputs settings (refer to Section 3.4.25, 3.4.26, 3.4.27 and
3.4.28). 9. Perform a pressure sensor check (refer to Section 6.4.9). 10. Perform a leak check (refer to Section 6.4.4). 11. Leave the instrument to warm-up and stabilise for 4 hours. 12. Perform a manual background (refer to Section 5.3). 13. Perform a span calibration (refer to Section 5.5). 14. Follow the procedure for a multipoint precision check (refer to Section 5.7). 15. The instrument is now ready for operation.
2.4 U.S. EPA Reference Set-Up
The Serinus 30 is designated as reference method RFCA­0509­174 by the U.S. EPA (40 CFR Part 53). The Serinus 30 must be used under the following conditions to satisfy this approval:
Range 0 – 50 ppm
Ambient Temperature 20 – 30 °C
Line Voltage 105 – 125 VAC, 60 Hz
Pump Ecotech optional internal or external pump
Filter Factory setup to meet requirement:
Instrument Settings If the units in the measurement menu are changed from volumetric to gravimetric (or gravimetric to volumetric) the instrument must be re-calibrated. The following menu selections must be used:

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Measurement Settings Menu

Background Interval:

24 hrs

Calibration Menu

Span Comp:

Disabled

Diagnostics Menu

Press/Temp/Flow Comp: ON

Diagnostic Mode:

Operate

Control loop:

Enabled

The instrument must be operated and maintained in accordance with this User Manual.

The Serinus 30 analyser is designated U.S. EPA reference method with or without the following options/items:

Internal pump Rack mount assembly Optional Ethernet Port

2.5 EN Type Approval Set-Up

The Serinus 30 has been certified to TÜV performance standards for Continuous Ambient Air Quality Monitoring Systems. The certificate number is TÜV 936/21221977/D. The Serinus 30 must be used under the following conditions to meet EN requirements:

Range

0 – 100 ppm

Ambient Temperature

0 – 30 °C

Instrument Settings

The instrument must be operated and maintained in accordance with this user manual.

The following menu selections must be used:

Measurement Settings

Background interval:

24 hrs

Calibration Menu

Span Comp:

Disabled

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Diagnostics Menu Press/Temp/Flow Comp: Diagnostic mode: Control Loop:

ON Operate Enabled

2.6 Transporting/Storage

Transporting the instrument should be done with great care. It is recommended that the packaging the instrument was delivered in should be used when transporting or storing.
When transporting or storing the instrument the following points should be followed:
1. Turn OFF the instrument and allow it to cool down. 2. Remove all connections of pneumatic pipe, power cables and communication cables from the
instrument. 3. Refer to Figure 38. If storing over a long period (six months) turn the battery OFF by moving the
switch (S1) on the main controller PCA. 4. Remove the instrument from the rack. 5. Refer to Figure 39. Seal each pneumatic ports with a dust plug.

Figure 39 ­ Dust Plugs 6. Refer to Figure 37. If transporting the instrument, replace the travel screws.
CAUTION Major damage to the instrument components may occur in transit if the measurement cell is not secured in place with the supplied transit screws.
7. Refer to Figure 36. Remove the USB memory stick and pack with instrument. 8. Place the instrument back into a plastic bag with desiccant packs and seal the bag (ideally the bag
supplied upon delivery).

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9. Refer to Figure 40. Place the instrument back into the original foam and box it was delivered in. If this is no longer available find some equivalent packaging that provides protection from damage. Note: Ecotech recommended to use the same packing material in which instrument is delivered.
10. The instrument is now ready for long term storage or transportation. Note: After transport or storage the instrument must be set-up and calibrated (refer to Section 2.3.4).
Figure 40 ­ Packing Instruction
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Operation

3.1 Warm-Up

When the instrument is first turned ON it must go through a period of adjustment and calibration. No measurements are taken during this warm-up period. The following activities occur during warm-up:
Auto Ref. Adjust
Adjusts the reference voltage and internal trim pot setting
Auto Zero Adjust
Adjusts the zero offset
Heat CO Scrubber
The instrument progressively increases the temperature of the CO scrubber until it reaches the desired temperature of 90 °C. When heating from cold, the scrubber will take approximately 20 – 30 minutes to reach desired temperature.
Cell Temperature
Waits until the cell temperature reaches at least 90% of set point. After this warm-up has completed the instrument will immediately begin making measurements (refer to Section 3.2).

3.2 Measurement

The Serinus 30 primarily operates in the sample cycle continuously. A background is performed after warm-up, once a day (at 23:45 as default) or when the chassis temperature changes by 4 °C. It is used to measure background absorption in the cell and is subtracted from sample measurements.
Table 4 ­ Measurements: Background and Sample Cycles

Instrument State Background Fill
Background Meas CO Sample Fill CO Sample Meas

Duration (minutes) 3
1 3 Continuous

Description Measurement cell fills with background air Measurement of background air Measurement cell fills with sample air Measurement of sample air

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3.3 General Operation Information

3.3.1

Keypad & Display

The instrument is operated with the use of four sets of buttons:

Figure 41 ­ Front Panel
Selection Buttons (1)
The selection buttons will perform the function specified directly above it on the screen. Generally this involves opening a menu, editing a value, accepting or cancelling an edit or starting an operation.
Scrolling Buttons (2)
The scrolling buttons allow the user to scroll up and down through menus or selection boxes. The scrolling buttons are also used to scroll side to side through editable fields such as: Dates, Times, Numbers etc.
On the home screen these buttons are used for adjusting the screen contrast. Press and hold the up button to increase contrast; press and hold the down button to decrease.
Keypad (3) The keypad contains the numbers 0 – 9, a decimal point/minus key (. ) and a space/plus key (SPA+CE). In the few cases where letters can be entered, the number keys act like a telephone keypad. Every time a number key is pressed, it cycles through its choices. The up/down arrow keys scroll through all the numbers and the entire alphabet.
Table 5 ­ Front Panel Buttons Function

Button 1 2 3 4

Function 1 or space, underline 2, A, B, C, a, b, c 3, D, E, F, d, e, f 4, G, H, I, g, h, i

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Button 5 6 7 8 9 0 (SPA+CE) and key (. )

Function
5, J, K, L, j, k, l
6, M, N, O, m, n, o
7, P, Q, R, S, p, q, r, s
8, T, U, V, t, u, v
9, W, X, Y, Z, w, x, y, z
0 or space, underline
When editing a floating point number: The key (. ) inserts a negative sign if the editing cursor is at the start of the number and negative signs are allowed. Otherwise it moves the decimal place to the current cursor location. inserts a positive sign if the cursor is at the start of the number; otherwise it enters a space. For non-floating point numbers: These keys usually increment or decrement the current value by 1. When editing the month field of a date, the (SPA+CE) and (. ) key change the month.

Instrument Status Light Buttons (4)
Located in the top left corner, these lights indicate the status of the instrument:
A red light indicates that the instrument has a major failure and is not functioning. An orange light indicates there is a minor problem with the instrument, but the instrument
may still take measurements reliably. A green light indicates that the instrument is working and there are no problems.
In the case of an orange or red light illuminated go to the Status Menu to find which components are failing (refer to Section 3.4.4) or press the orange or red status light button to see the pop up box with a full list of current faults.
Press the green status light button at any time to close any open edit box or menu and return to the home screen.
If none of instrument status lights are ON and the keypad is backlit, this indicates that the instrument is running the bootloader. The screen will also indicate that it is in the bootloader menu.

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3.3.2

Home Screen

The home screen is composed of seven parts: readings (1), error/status line (2), instrument activity line (3), selection buttons (4), time/date (5), concentration units (6) and USB status (7).

Figure 42 ­ Home Screen Readings (1) Displays the concentration being measured in real-time. The display can be configured to show just the instantaneous data or the instantaneous and average data (refer to Section 3.4.8 Home Screen). Error/Status Line (2) The error/status line provides the users with information on any problems the instrument may have. It displays the highest priority error or status condition contained in the Status Menu (refer to Section 3.4.4). Instrument Activity (3) This line shows what function the instrument is currently performing. Generally, it will show three groups of actions: Warm-up, Measurement or Calibration. Selection Buttons (4) These buttons are used on the home screen to enter one of two menus. The Quick Menu (refer to Section 3.4.1) contains all information and features necessary for scheduled maintenance. The Main Menu (refer to Section 3.4.2) contains all information and fields available to the users and is generally only used during initial set-up and diagnostics. Time and Date (5) The time and date are displayed in between the menu buttons at the bottom of the screen.
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Concentration Units (6)
The instrument units are displayed in the bottom right corner of the display.
USB Detection (7)
A USB symbol will be displayed in the bottom right corner when the USB memory stick is plugged in (the USB socket is behind the front panel). If the USB symbol is not shown the USB memory stick should be inserted. Underneath, the USB symbol arrows may be displayed which indicates data transfer. The USB memory stick must not be removed whilst the arrows are visible.
Note: To safely remove the USB memory stick, navigate to the Quick Menu and use the Safely Remove USB Stick function (refer to Section 3.4.1).

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3.4 Menus & Screens

Menus & Screens

Quick Menu Main Menu

Status Menu

Analyser State Menu
General Settings Menu
Measurement Settings Menu
Calibration Menu

Temperature Menu
Pressure & Flow Menu
Voltage Menu
Pressure Calibration Menu
Flow Calibration Menu

Digital Pots Menu

Service Menu

Diagnostics Menu
Calculation Factors Menu
Data Logging Menu
Serial Communication
Menu
Analog Input Menu

Internal Pump Menu Valve Menu Tests Menu

Digital Input Test Menu
Digital Output Test Menu

Communications Menu

Analog Output Menu Digital Input Menu

Digital Output Menu

Network Menu

Bluetooth Menu

Trend Display Menu

Chart

Advanced Menu

Hardware Menu
Parameter Display Menu

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The menu system is divided into two sections selectable from the Home Screen: The Quick Menu and the Main Menu. The Quick Menu contains all information and operations necessary during scheduled maintenance visits. The Main Menu contains all fields that are accessible to the users. It provides information on component failures and measurement parameters as well as editable fields and test procedures.

In general, editable parameters are displayed in bold font. Non-editable information is displayed in a thin font. Some parameters may become editable based on the state of the instrument.

For example, the manual calibration type and mode can only be changed when the instrument has finished the warm-up process.

3.4.1

Quick Menu

The Quick Menu contains all the maintenance tools in one easy to use screen. It allows operators to perform calibrations, check important parameters and review the service history.

Span Calibrate CO
Event Log Instrument Safely Remove USB Stick

Figure 43 ­ Quick Menu Screen
This field is used to perform a span calibration adjustment and should be only used when a known concentration of span gas is being drawn through the measurement cell and the reading is stable. Activating the span calibrate field for a named gas will open a dialog box. Enter the concentration of the span gas that the instrument is sampling and press Accept.
This field enters a screen with a log of all the events that the instrument has performed. These events include errors and warnings. This log is stored on the removable USB memory stick. The log is organised by month. When the user enters this screen, they will be prompted to enter the month for which they wish to view the events.
This field allows the instrument to be set to either Online (normal instrument operation) or In Maintenance (data is flagged as invalid).
Always select this menu item before removing the USB memory stick or select the same menu item from the Service Menu (refer to Section 3.4.13). Failure to do this may cause corruption of the memory stick.

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Instrument Gain Next Service Due

This is a multiplication factor which is used to adjust the concentration measurement to the appropriate level (set by performing a Span Calibrate CO). This should be recorded after each calibration in the station log book.
A field that notifies the user when the next instrument service is due. This value is editable in the Next Service Due field of the Advanced Menu (refer to Section 3.4.31). This field is only displayed in the two weeks prior to the date displayed in this field or after the date has occurred.

3.4.2

Main Menu

There are six menus on the Main Menu screen.

Analyser State Menu General Settings Menu Measurement Settings Menu Calibration Menu Service Menu Communications Menu Trend Display Menu

Figure 44 ­ Main Menu Screen
Refer to Section 3.4.3. Refer to Section 3.4.8. Refer to Section 3.4.9. Refer to Section 3.4.10. Refer to Section3.4.13. Refer to Section 3.4.22. Refer to Section 3.4.31.

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3.4.3

Analyser State Menu

Main Menu Analyser State Menu

This displays the status of various parameters that affect instrument measurements.

Status Menu Temperature Menu Pressure & Flow Menu Voltage Menu Model Nominal Range Ecotech ID Serial No. Board Revision Firmware Ver.
Power Failure

Figure 45 ­ Analyser State Menu Screen
Refer to Section 3.4.4. Refer to Section 3.4.5. Refer to Section 3.4.6. Refer to Section 3.4.7. This field will display the instrument model (e.g. Serinus 30). The measurement range of the instrument. The Ecotech ID number. The main controller PCA serial number. The main controller PCA version. This field displays the firmware version currently in use on this instrument. This can be important when performing diagnostics and reporting back to the manufacturer. This field displays the time and date of the last power failure or when power was disconnected from the instrument.

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3.4.4

Status Menu

Main Menu Analyser State Menu Status Menu

The Status Menu presents a list of the current Pass/Fail status of the main components. During warm-up, the status of some parameters will be a dashed line.

Event Log
Show Error List
Next Service Due
Maintenance Mode +5V Supply +12V Supply +Analog Supply -Analog Supply A2D Cell Temp. CO Scrubber Temp. Mirror Temp. Lamp/Source
Correlation Wheel Ref Voltage IR Source System Power

Figure 46 ­ Status Menu Screen
This field enters a screen with a log of all the events that the instrument has performed. These events include errors and warnings. This log is stored on the USB memory stick. The log is organised by month. When the user enters this screen they will be prompted to enter the month for which they wish to view events. This field allows the user to display the list of current errors and warnings on the screen. This field is visible with the next service due date if the service is due within the next two weeks. Error if the system is “In Maintenance” (refer to Section 3.4.13). Pass if the +5 V power supply is within the acceptable range. Pass if the +12 V power supply is within the acceptable range. Pass if the analog power supply is within the acceptable range (+12 V). Pass if the analog power supply is within the acceptable range (-12 V). Fail only if a problem is detected with the analog to digital conversion. Pass if the cell heater temperature is within ± 10% of the heater set point. Pass if the CO scrubber heater temperature is within ± 10% of 90 °C. Pass if the mirror heater temperature is within ± 10% of set point. Fail if the reference voltage is less than 0.5 V and the input pot is over 250, which can be caused by the IR source failing. Fail if the correlation wheel is not functioning. Checks that the reference voltage is within acceptable limits 3.6 – 4.4 V. Checks that the IR source voltage is 5 ± 0.5 V. Pass if the system has an adequate electrical supply.

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Diagnostic Mode Diagnostic PTF Comp Diagnostic Control Valve Manual Control
CO Conc. V Saturated
Bkgnd Conc. V Saturated
Pressure Calibration Flow Calibration [Internal Pump Option] Flow Fault
Cell Press > Ambient
Flow Block Temp. [Internal Pump Option] Chassis Temp.
USB Stick Disconnected Instrument Warmup Backgrounds Disabled

Error if the electronics are in Diagnostic Mode (refer to Section 3.4.14). Error if the Pres/Temp/Flow Comp. is disabled (refer to Section 3.4.14). Error if the control loop is disabled (refer to Section 3.4.14). Error if the valves have been placed in manual control mode (refer to Section 3.4.17). Indicates if the voltage of the concentration during measurement is within the limits of the analog to digital converter (-0.26 V to 3.29 V). Indicates if the voltage of the concentration during background measurement is within the limits of the analog to digital converter (-0.26 V to 3.29 V). Error if the user is performing a pressure calibration. Error if the user is performing a flow calibration.
Ok when the instrument has acceptable sample flow based on the difference between cell and ambient pressures. With the internal pump option this fault is monitored by a flow sensor. This error occurs when the pressure inside the instrument exceeds the ambient pressure. Pass if the flow block temperature is within 10% of the heater set point (to keep a constant accurate flow).
Pass if the chassis temperature is within the acceptable limits (0 – 50 °C). Detects whether a USB memory stick is plugged into the front USB port. Ok once the instrument is out of warm-up status. Ok if backgrounds is enabled.

3.4.5

Temperature Menu

Main Menu Analyser State Menu Temperature Menu

Operation

Figure 47 ­ Temperature Menu Screen

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Temperature Units
Set Point (CELL)
Set Point (FLOW) [Internal Pump Option] Cell CO Scrubber Flow Block [Internal Pump Option] Chassis
Mirror
Chassis Humidity

The current temperature units of the instrument (Celsius, Fahrenheit or Kelvin). The temperature set point of the measurement cell. The factory default is 50 °C. The temperature set point of the flow block heater. The factory default is 50 °C.
Displays current temperature of the measurement cell. Displays current temperature of the CO Scrubber. Displays the current temperature of the flow block.
Displays the temperature of air inside the chassis, measured on the main controller PCA. Displays the temperature of the end-cap mirror plate on the measurement cell. Displays the humidity percentage of air inside the chassis, measured on the main controller PCA board.

3.4.6

Pressure & Flow Menu

Main Menu Analyser State Menu Pressure & Flow Menu

Pressure Units
Ambient Cell Flow Units Flow Set Point [Internal Pump Option] Sample Flow

Figure 48 ­ Pressure & Flow Menu Screen
Select the units that the pressure will be displayed in (torr, PSI, mBar, ATM or kPa). Current ambient pressure. Current pressure within the measurement cell. Select the units that the sample flow will be displayed in (slpm or L/min). The desired sample flow.
Indicates the gas flow through the sample port of the instrument. The value should be around 1.0 slpm. If there is an error with the sample flow, it will read 0.00 slpm.

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3.4.7

Voltage Menu

Main Menu Analyser State Menu Voltage Menu

IR Source Conc. Voltage (RAW)
Conc. Voltage Ref. Voltage Flow Voltage [Internal Pump Option] Cooler Voltage Opto. Strength
+5V Supply +12V Supply +Analog Supply -Analog Supply

Figure 49 ­ Voltage Menu Screen
The drive voltage of the IR source 5 V ± 0.5 V. Voltage from the sensor proportional to the detected signal from the measurement cell. This voltage represents the actual measurement of gas. Displays the detector voltage after PGA scaling. The reference voltage is a measure of the IR source intensity. The current voltage measured from the flow block PCA.
Voltage of the peltier cooler within the IR detector (~1.25 V). The measurement of the signal strength coming from the optodetector on the correlation wheel. +5 V power supply. +12 V power supply. +12 V (primary) power supply. The value should be within ± 2 V. -12 V (primary) power supply. The value should be within ± 2 V.

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3.4.8

General Settings Menu

Main Menu General Settings Menu

Decimal Places Conc. Units Reference Temperature [Gravimetric Units] Temperature Units Pressure Units Flow Units Date Time Backlight
Home Screen
Char 0 has Slash

Figure 50 ­ General Settings Menu Screen
Select the number of decimal places (0 – 5) used for the concentration displayed on the home screen.
Sets the concentration units (ppm, ppb, ppt, mg/m3, g/m3 or ng/m3).
This option only appears if concentration units are set to gravimetric (mg/m3, g/m3 or ng/m3). Select either 0 °C, 20 °C or 25 °C. This sets the standard temperature used from conversion for measured volumetric values.
Select the units that temperature will be displayed in (Celsius, Fahrenheit or Kelvin).
Select the units that the pressure will be displayed in (torr, PSI, mBar, ATM or kPa).
Select the units that the sample flow will be displayed in (slpm or L/min).
Displays the current date and allows users to edit if required.
Displays the current time and allows users to edit if required.
Select the length of time the screen and keypad backlight remain ON after a button press. The setting Always Off means the backlight never turns ON; the setting Always On means the backlight never turns OFF and the setting Daytime means the backlight will turns ON from 7 am to 7 pm or 30 minutes after any operation.
This field allows the user to display concentrations on the Home Screen in two formats. The first is Inst. only which displays only the instantaneous concentration reading, the second is Inst & Avg which displays both instantaneous and average concentration on the Home Screen. The average is measured over the time period set in Measurement Settings Menu (refer to Section 3.4.9).
When enabled, the instrument will display the zero character with a slash (0) to differentiate it from a capital `O’.

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3.4.9

Measurement Settings Menu

Main Menu Measurement Settings Menu

Average Period Cal. Average Period
Min. Data Capture
Filter Type
Rolling Size [Rolling Filter] Backgrounds
Date [Backgrounds]

Figure 51 ­ Measurement Settings Menu Screen
Set the time period over which the average will be calculated: Minutes (1, 2, 3, 4, 5, 6, 10, 12, 15, 20 or 30) or hours (1, 2, 4, 6, 8, 12 or 24) or rolling hourly averages over the last (4 or 8) hours.
When Enabled can set the time period over which the calibration average will be calculated when the system is in Cal. Mode SPAN or ZERO: Minutes (1, 2, 3, 4, 5, 6, 10, 12, 15, 20 or 30) or hours (1, 2, 4, 6, 8, 12 or 24) or rolling hourly averages over the last (4 or 8) hours. Default is Disabled.
Controls how much of the previous time period needs to be included before the average yields a number. The default is 0%, which reflects past behaviour of the instrument: turning on a machine with 15 minute averaging any time between 1:01 1:14 with a setting of 0% would produce #### until 1:15 (because by 1:15, there was at least 1 valid measurement to construct the average from). However, a setting of 100% would mean the value stayed #### until 1:30 (because there needs to be a complete 15 minutes worth of measurements to construct the average from).
Sets the type of digital filter used (None, Kalman, 10 sec, 30 sec, 60 sec, 90 sec, 300 sec or Rolling). The Kalman filter is the factory default setting and must be used when using the instrument as a U.S. EPA equivalent method or to comply with EN certification. The Kalman filter gives the best overall performance for this instrument.
Sets the number of measurements included in the rolling average. Only available if the Filter Type is set to Rolling.
The default setting is enabled. When enabled it allows the user to edit the background interval via the following fields Time, Repeat and Units. When any of the backgrounds fields are edited the instrument will automatically calculate the date and time the next background is due to run and display under each relevant field.
Displays the date that the next background is due to run.

Operation

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Serinus® 30 User Manual 3.3

Time [Backgrounds] Repeat [Backgrounds] Units [Backgrounds]

Edit and display the time that the next background will run. The time is set using a 24-hour clock.
Defines an interval value for the repeat of the background based on the Units selected. This field indicates the delay period; once the specified amount of time has lapsed the background will automatically run again. The user can edit this field but some restrictions apply depending on the Units selected. Default is “1”.
This is where the user can define the type of units for the Repeat delay period. For example: A Repeat of “1” and Units of “Days” means that a calibration will automatically run every day at the defined time. Default is “Days”.

3.4.10 Calibration Menu Main Menu Calibration Menu Calibrating the instrument should be done with care (refer to Section 5 before using these menus).

Cal. Type
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Figure 52 ­ Calibration Menu Screen
Depending on the selection in this field, a number of extra menu items will be displayed. These are separately documented in Manual Mode (refer to Section 3.4.10.1) and Timed Mode (refer to Section 3.4.10.2). Select the Cal. Type field and select either Timed or Manual. Timed mode is an automatic calibration controlled by the: Interval between cycles Length of each calibration cycle Time when the calibration will begin Check only or automatic compensation Timed calibration with span compensation enabled

References

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