HORIBA OZGU-370SE Ozone Calibration Unit Instruction Manual

: September 4, 2024
: HORIBA

Table of Contents

HORIBA OZGU-370SE Ozone Calibration Unit
Product Usage Instructions
FAQ
Introduction
Specification
Operation
Configuration
Maintenance, Special spare parts
Documents / Resources
- Read User Manual Online (PDF format)
- Download This Manual (PDF format)

HORIBA OZGU-370SE Ozone Calibration Unit

Specifications:

Fulfils requirements of EN standards related to span-gas generation for laboratory test and continuous quality control in field tests
ASGU-370 calibration electronics developed and manufactured in Austria
Comfortable operation via 2 big illuminated Touch-Screen-Displays
Operation via RS232 and Ethernet interface (Bayern Hessen protocol)
Delivery scope includes remote software for easy external handling (LAN)
High flexibility through free definable span points (up to 20)
High flexibility through free definable cycles (e.g. Lack of fit)
High flexibility through free definable sequences (stringing cycles together)
Programmable timer allows time delayed start of calibration process
Internal data logger (option) stores raw values from calibration procedure for reporting with included evaluation software

Product Usage Instructions

Measurement Principle:

The OZGU-370SE uses the ultraviolet absorption method (NDUV) for measurement.

Operation:

The display on the right side shows the ASGU-370 calibration unit with the measured ozone concentration set point.
For detailed operational instructions, refer to the SOFTWARE eASGU Operation Manual.

Span Gas Points:

The OZGU-370SE uses the OMRON Controller E5CC-CX3A5M-007 for OZONE control. Select the maximal reached ozone concentration with Span gas point 900 based on the flowrate and UV-lamp settings.

CYCLE Param:

Refer to the Cycle Param settings for configuring cycles.

FAQ

Q: What is the main application of the OZGU-370SE?
- A: The main application is for ongoing quality control in the field, checking Ozone analyzers in air pollution monitoring stations, laboratories, and gas analyzer production.
Q: How many span points can be defined with the OZGU-370SE?
- A: Up to 20 span points can be defined for increased flexibility in calibration.

Introduction

The multipoint calibration unit OZGU-370SE is designed for checking of Ozone analyzers. It is installed in air pollution monitoring stations, in laboratories for quality assurance and also in the production of gas analyzers. One main application is for the ongoing quality control in field. The calibration unit OZGU-370SE is designed for the dynamic and continual manufacture of zero and span gas to perform all ongoing quality control procedures according to EN 14625. Transferstandard OZGU-370SE is based on well proven Analyzer APOA-370 with integrated span gas generation unit (ASGU-370 Electronic). This Span gas unit is able to provide ozone gas to an 2nd Ozone monitor. The actual concentration is measured by the type of approved measurement cell of the implemented analyzer part. The measured concentration is used as set point for the 2nd Ozone analyzer (measurement unit to be calibrated). Due to the fact that OZGU-370SE is based on APOA-370 and ASGU-370, basic operation and maintenance instructions can be found in separate manual attached to this document.

Specification

Technical Advantages:

Fulfils requirements of EN standards related to span-gas generation for laboratory test and for continuous quality control at field test
ASGU-370 calibration electronic developed and manufactured in Austria
Comfortable operation via 2 big illuminated Touch-Screen-Displays
Operation via RS232 and Ethernet interface (Bayern Hessen protocol)
Delivery scope includes remote software for easy external handling (LAN)
High flexibility through free definable span points (up to 20)
High flexibility through free definable cycles (e.g. Lack of fit)
High flexibility through free definable sequences (stringing cycles together)
Programmable timer allows time delayed start of calibration process
Internal data logger (option) stores raw values from calibration procedure (set value and actual value, status) for reporting with included evaluation software
Portable case available as an option

Technical data in accordance to type approval test for APOA-370 no.: TÜV No. 936/21204643/A

Measurement Principle:

Ultra-violet-absorption method (NDUV)

OPTION: Measuring device switchover, here the solenoid valve SV3 and SV4 are switched in the ASGU state “Purge” and the APOA works as an O3 measuring device. For the data transfer over Bayern/Hessen protocol during this measuring mode, there is also the SIO-370 in the APOA part built-in. In the standard OZGU, the SIO-370 and the two solenoid valves are not present and in the ASGU “Purge” state, the pump is switched off using a semiconductor relay. Here the data transfer from the Bayern/Hessen protocol takes place directly using the ASGU interface COM2

Operation

On the left side there is the display from the APOA-370 analyzer (Pos 1). Here you can see actual ozone concentration and additional information about the analyzer (see APOA-370 Operation Manual). Normally this screen is used only for the calibration of the OZGU-370SE by accredited laboratory. At standard operation of the OZGU-370SE the mode on this display should be set to MEAS (Measure). Because of the internal use of the Ethernet interface to query the ASGU for setpoint values, the IP address 192.168.0.8 should not be changed by the APOA. Furthermore, when using the OMRON controller E5CC-CX3A5M-007 for O3 concentration control, the measuring range of Analog output 1 must remain set to 1000ppb. On the right side there is the display from the ASGU-370 calibration unit (Pos 2). Indicated set point is the measured ozone concentration. For additional information about operation of the calibration unit and touch screen display please have a look to SOFTWARE eASGU Operation Manual.

Spangas points with OMRON Controller E5CC-CX3A5M-007 for OZONE control:

The OMRON Controller adjust the voltage from the UV Lamp for the Ozone production. The Setpoint is the selected Spangas point in the Span menu from the ASGU. The 20 Spangas points are fix from Horiba preconfigured and the Controller get depending on the selected Spangas point a Setpoint value between 0-10V. For the actual measurement value is used the Analog Output 0-10V (1000ppb measurement Range) from the APOA. With this modification the ozone concentration can adjust to the selected Span value. The maximal reached Ozone concentration is selected with Spangas point 900. The reached actual value and whether the point is stable dependents from the adjusted flowrate and the UV-lamp.

CYCLE Param

The description below shows the standard adjustment of the eASGU software for cycles like linearity checks and other quality control activities. The values with a () according EN14625. You can find further information on the cycle parameterization in the manual SOFTWARE eASGU. The certification range for ozone is 500μg/m3 (250ppb)

Lack of fit-6P (* first installation of analyzer, after repair, modification) Cycle process/duration 132min:
- 18min – 200ppb (80% of certification Range)
- 18min – 100ppb (40% of certification Range)
- 18min – 0ppb (Zero gas)
- 18min – 150ppb (60% of certification Range)
- 18min – 50ppb (20% of certification Range)
- 18min – 250ppb (95% of certification Range)
Lack of fit-4P (* once a year, after repair) Cycle process/duration 64min
- 12min – 0ppb (Zero gas)
- 12min – 50ppb (20% of certification Range)
- 12min – 150ppb (60% of certification Range)
- 12min – 250ppb (95% of certification Range)
2 Point Test (*at least every 2 weeks, recommended every 23 or 25 hours)
- Cycle process / duration 80min 40min – 0ppb (Zero gas) 40min – 250ppb (95% of certification Range)
20 Point Test
- Cycle process/duration 200min Every Point is active for 10 min to check the several concentration values.

Equipment view – rear side:

On the rear side you find all necessary gas connections as well as the scrubbers for zero air generation. Instead of these scrubbers also external zero air can be used (pressure free).

….O3 Span gas outlet for external O3 – Monitor (Instrument to be tested/ calibrated)
…. Purge Outlet Purge of internal ozone generator
…. Exhaust Analyser Exhaust
…. Bypass Overflow of internal ozone generator
..Column connection for silica gel and active carbon column
…. Activated carbon for zero air generation
…. Silica gel for zero air drying
…. RS 232 Computer 25pin connector from eASGU to Computer Bayern/Hessen Protocol
…. RS232 Analyzer 9pin connector from eASGU to Analyzer (only with Option Datalogger see page 13)
.. Ethernet Ethernet connector APOA-370 Horiba / UDP Protocol, Port 53700 42i Thermo C-link / TCP Protocol, Port 9880 Remote Software / eASGU Protocol / TCP Further data retrieval / B/H Protocol / TCP, Port 40002

Configuration

The output span gas flow, as well as the O3 concentrations, can be adjusted. Furthermore, in the menu Cycle the program sequences can be modified according to your need.

Default settings eASGU:

The instrument is delivered with the following default settings:

Table 1: Default setting ASGU

Params / Module O 3	Param	Value	Description
Source	Ozone at 1l/min	0ppb	Not used
Source	Factor mass-voll	0.5	calculation mass (µg/m3) – voll (ppb)
Source	Remote Address	112	Component identification B/H protocol
FlowRate	Purge Zerogas:	0.0	Not used
FlowRate	Zero Zerogas:	1.0	Not used
FlowRate	Span Zerogas Minimum:	0.0	Not used
Span	Concentration-related Spangas points	0 – 1000ppb	pre-configured from

The default configuration from the flow is 0,7l/min intern (OZGU) + 0,7l/min extern (O3 monitor under Test) + 0,3l/min Overflow = 1,7l/min total flow rate
How to adjust ozone span gas flow: The different voltages on the OGU board are fixed and adjusted from Horiba Austria. So it is only possible to change the flow. A higher flow rate affects lower concentration and vice versa. Also some of the ozone monitoring instruments on the market are requiring a higher sample flow rate of more than 0,7 litre/ minute. So the actual flow has to be set according to customer request between 1 and 3 litre/ minute in order to ensure enough overflow for save calibration. Thus there might be a situation, where the span gas flow needs to be adjusted and therefore the needle valve (Pos 1) can be used. For measurement of the actual flow, connect a flow meter to “O3 Span gas Outlet” on the rear panel. Furthermore, you have to close the “Bypass”- connector during your flow measurement. Now you are able to adjust the ozone span gas flow to the desired value. Please note: Adjustment of O3 span gas flow changes all span gas values accordingly!

Calibration of the Transfer standard

The Calibration of the O3- -transfer standard has to be done at an international or national Institute/laboratory that is authorized to perform such calibrations. HORIBA recommends to do this once a year. To calibrate with an external O3 standard you have to connect the calibration gas directly to the filter holder (see picture above). Select on the ASGU touch screen “Zero” or “Span” so that the pump is in operation. Afterward, calibrate the analyzer part of OZGU-370SE. For more details see APOA-370 operation manual page 10.

Maintenance, Special spare parts

Spare parts and consumables are listed in the APOA-370 analyzer manual and should be replaced according to the interval specified in “Appendix to the manual AP-370”, which is an integral part of these technical papers.
For the Zerogas production are the Silica gel (1), the Active carbon (2), the DFU Filter (3) and the pump or diaphragm (4) to maintenance.
The condition of the Silica gel should be checked regularly and replaced if the color indicator changes from orange to transparent. The Active carbon should be replaced at least once per year or when the zero point increase. The DFU Filter is to change when the surface is strongly contaminated.

For the pump use the vacuum-cleaned pump diaphragm 3200602390 for a correct and not increased zero gas. For special applications, it is also possible to use a bigger ozone oven (5) and a longer (stronger) lamp – this has to be defined, when ordering:

Standard UV Lamp for OZGU-370SE Type CPQ-8153 L=80mm
Special UV Lamp for OZGU-370SE Type CPQ-8153 L=117mm

Data Logger and Excel Macros for Report

OZGU-370SE has as an option the data logging from the test analyzer. Different Excel templates (.xlt) that use the Macro Kalib.xla enable the creation of final report.

This is possible for the following firmware:

1.5.185 (Zero point always Zero)
1.5.186 and higher (Zero point is the value from the APOA-370)

For a description of this Data Logger function and the macros look in the Operation Manual Software eASGU.

Example: 6- 6-point Linearity check with the Data Logger option:

Documents / Resources

| HORIBA OZGU-370SE Ozone Calibration Unit [pdf] Instruction Manual
OZGU-370SE Ozone Calibration Unit, OZGU-370SE, Ozone Calibration Unit, Calibration Unit, Unit
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