ecom-ST Industry Leader Instruction Manual

ecom-ST Industry Leader

Specifications

• Model: ecom-ST
• Manufacturer: ecom GmbH
• Measuring Instrument Type: Stationary
• Intended Use: Semi-continuous exhaust gas measurement at combustion systems

Product Usage Instructions

1. Device Structure

The ecom-ST consists of various components including connections, keypad, interfaces (USB, RS485, Ethernet), analog outputs (optional), unheated gas sampling system, heated sampling system, and data storage.

2. Installation

Depending on the option chosen, the device can be wall-mounted with a protective housing or installed in a rack.

3. Starting Up

Ensure the device is properly connected to power and follow the startup procedure outlined in the manual.

4. Measurement Procedure

Prepare the device for measurement, conduct flue gas analysis, view measurement screens, perform draught measurement, and ensure CO overload protection is in place.

5. Control

Utilize the control features of the device as needed for your measurements.

6. Adjustments

Make adjustments including remote setup via Modbus, time control settings, and configuring analog outputs if applicable.

7. Data Processing

Utilize the data logger feature and establish data connection to a PC using ecom-DAS NT2 or ecom-DAS 5 software.

8. Maintenance

Regular maintenance includes checking and changing the fine dust filter, maintaining gas sensors, calibration procedures, and handling probe/tubing.

FAQs

• Q: What is the maximum measuring time for the ecom-ST?
  • A: The maximum measuring time without interruption is 1 hour. Following this, a fresh air purging phase of at least 4 minutes with subsequent fresh air calibration of at least 1 minute is required.
• Q: How should I handle the device to prevent damage?
  • A: Avoid moisture or frost exposure, contact with substances containing solvents, and prevent electrostatic discharge by grounding yourself before touching the device’s components.
• Q: Can the ecom-ST be exposed to strong electromagnetic fields?
  • A: Strong electromagnetic fields can affect the device’s function, so it is advised not to expose it to such radiation.

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Intended Use

The ecom-ST is a stationary measuring instrument made by ecom GmbH, which is intended for the semi-continuous exhaust gas measurement at combustion systems and which is permanently installed on site. The device is operated either by the internal time control or by time control via Modbus. A maximum measuring time of 1 hour without interruption is possible. Afterwards, a fresh air purging phase of at least 4 minutes with subsequent fresh air calibration (at least 1 minute) must be carried out.
Scope of Delivery
· ecom-ST · Mains power cable 2,5 m · Kit of consumable spares · Protective housing (option)

General Safety Information

WARNING
Risk of injury Improper work on combustion engines or combustion controllers can lead to injuries. Work on such systems may only be carried out by specialists.
WARNING
Risk of electric shock Live components are exposed when the housing is open. Before opening the device, disconnect it from the power supply voltage.
CAUTION
Damage to the electronics Moisture or frost can damage the electronics. Do not store the device in damp rooms or by temperature below 0C!
CAUTION
Damage to the sensors Substances containing solvents damage the device’s sensors. Avoid contact with substances containing solvents!
CAUTION
Damage to electronic components Electrostatic discharge can damage electronic components. Before touching the inside of the housing, touch a grounded component!

NOTE
Strong electromagnetic fields can affect the function of the device. Do not expose the device to any strong electromagnetic radiation!
NOTE
Check fine dust filter and PTFE filter regularly! Change filter when the grey staining equals <3 on the soot dot comparison scale!

Device Structure

1.1 Components

1 Device with protective housing (option)

2 Key

3 Graphic display 5 Condensation pump 4 Fresh air inlet 6 PTFE filter

7

SO2/NOx filter for CO sensor

8

Gas cooler with fine dust filter

1.2 Connections

1 USB connection

4 Analog outputs (option) 7

Measuring gas outlet

2

Slot for multi media card (SD)

Mains power 5 connection – max.
cable length 3 m

8

Condensation outlet

3

Network connection

6

Mains supply ventilation fan

1.3 Keypad

Connection LED 1 (only by wireless
connection)

5

ESC key (quit/escape menu)

9

Store key

Info LED (for 2 indication of
instrument status)

6

Digital flow indication/flow meter

10

Info key (access to control menu)

Battery LED (for 3 indication of
charging status)

7

Enter key (confirm selection)

11 ON/OFF key

4

Function keys (assignment shown on display)

8

Cursor control (up/down/right/left)

NOTE
In input mode, the numerical function of the keys is used to enter figures.

1.4 Interfaces
1.4.1 USB
The device is equipped with an USB interface. The maximum cable length for using the interface is 2 m. The USB port can be used to establish a connection to a PC or laptop. Data can be recorded using the ecom PC software DAS NT 2 or DAS5.
A driver is required for communication between the device and the ecom PC software DAS NT 2 or DAS5. PC software and USB drivers are available free of charge on the ecom GmbH website (see https://www.ecom.de/en/downloads/).
The following transmission parameters must be set for the two programs on the ecom-ST (“Adjustments” /” Internal “/” USB “):
DASNT2 · 1200 Baud · Protocol DAS
DAS5 · 1200 to 38400 Baud (setting as in software ,,DAS5”) · Protocol Enhanced
1.4.2 RS485
An RS485 interface is available for connecting the device via Modbus RTU. The ecom-ST supports a 2-wire topology (see figure).

The Modbus slave address is set to 0x2 in the delivery state. The maximum cable length is 50 m. If the ecom-ST is used as a terminal device, a termination of 120 is provided. The termination is active on delivery. Proceed as follows to deactivate:
1. Disconnect the device from the mains voltage. 2. Loosen the knurled screws on the front panel. 3. Open the front panel. 4. Set DIP switch 3 to OFF.

1 Knurled screw

2 Front plate

3 DIP switch

The cable for the data connection via Modbus RTU can be connected to the 8-pin connector. The plug is then plugged into the socket on the circuit board. The pin assignment is listed below.

1 Pin assignment 2 8-pin plug

3 8-pin socket 4 Position at device

NOTE
When using the RS485 interface, neither the USB nor the COM module must be set to a Modbus protocol.

1.4.3 Ethernet
An Ethernet interface is available for connecting the device via Modbus TCP. The ecom-ST can be integrated into a network via the LAN connection on the front.
The following transmission parameters must be set at the ecom-ST (“Adjustments” / “Internal” / “COM-Modul”):
· 115200 Baud (recommended adjustment) · Protocol Modbus/TCP
Upon delivery, the ecom-ST has the IP address “192.168.55.1”. To change it, you have to configure a PC for this subnet. It is advisable to temporarily configure the PC with the IP address “192.168.55.2”. The ecom-ST has a web interface for configuring the IP address as well as user name and password. To connect, enter the IP address “192.168.55.1” in the web browser (in this example Opera). On delivery, the user name is “admin” and the password is “PASSWORD”.

You can set the password for the administrator and for the creation of additional users under the menu item “User”.

To adapt the network configuration, you can change the network settings under “Network” by selecting “eth0” “Configuration”.

1.5 Analog outputs (option)
The device can be equipped with 8 analog outputs (4 mA – 20 mA). Channels 1 to 4 are available at socket 1 (lower socket) (see pin assignment socket 1). Channels 5 to 8 are available at socket 2 (upper socket) (see pin assignment socket 2).

Pin assignment socket 1

1 GND channel 4

4

2 Signal channel 4 5

3 GND channel 3

6

Pin assignment socket 2

Signal channel 3 GND channel 2 Signal channel 2

7 GND channel 1 8 Signal channel 1

1 GND channel 8

4 Signal channel 7 7 GND channel 5

2 Signal channel 8 5 GND channel 6

8 Signal channel 5

3 GND channel 7

6 Signal channel 6

Each channel can be assigned a measurement or calculation variable with free scaling (see chapter “Configuring the Analog outputs”).

Technical Data R_Load I_max U_L

600 Ohm at I_max 20 mA 15 V (open circuit voltage)

1.6 Unheated gas sampling system
The ecom-ST can be equipped with a so-called NOx tubing. The NOx tubing effectively minimizes the washout losses of water-soluble gas components like NO2 and SO2. Thanks to its smooth surface and the increased flow rate, the condensation formation and the correlated washout impact are minimized.
NOTE
· Do not kink the NOx tubing! · Do not put the NOx tubing into
water!
1.7 Heated sampling system
By using the heated sampling system (option), the measurement of water-soluble target substances (NO2 and SO2) is possible without washout losses. A hot gas filter integrated in the probe head protects the device from premature contamination. The maximum exhaust gas temperature when using the heated sampling system is 500°C.
NOTE
· Do not kink the heated tubing! · Do not put the heated tubing into
water! · Clean or change the PTFE filter
regularly! ·

1.8 Data storage
If a SD card is inserted in the device, measurements can be saved. In order to be able to make a recording, the SD card must be inserted into the SD card slot as shown until it clicks into place completely.
NOTE
The SD card must have the following properties: · Maximal storage capacity: 32 GB (UHC card) · Formatting: 16-bit FAT / FAT32
CAUTION
Data loss Loss of data and damage to the data carrier are possible. Do not pull out cards while data is being recorded! All values of a recording are saved in a csv file with the name ” ST_DLxx.csv “. Successive files are automatically numbered from 00.

Installation

NOTE
Fastening material is not included and must be selected on site according to the individual circumstances.
2.1 Wall-mounting protective housing (option)
Dimensional drawing

NOTE
For mounting, kindly consider that the device with the housing weighs approx. 25 kg.
Install the device in a ventilated room only!

1. Pre-drill the mounting holes acc. to the dimensional drawing.
2. Depending on the wall and the individual conditions on site, screw the protective housing to the wall.

NOTE
Do not use the as a storage space!

housing

2.2 Rack installation

NOTE
6 RU must be complied with!

3. Starting Up
1. Connect the gas sampling system to the device. 2. Connect the gas sampling system to the extraction point. 3. Connect the power supply unit. 4. If necessary, connect hose for fresh air supply (AIR-IN Gas
processing module). 5. Connect hose for condensate evacuation disposal. 6. Switch on the device.

Measurement Procedure

4.1 Preparation
NOTE
Prior to each measurement, make sure that: · the device has no visible defects. · the measuring system is tight.

Gas analysis Settings Control Remote setup

After switching on the device, the start screen is shown on the display and then the main menu. In the main menu 4 submenus are displayed.

Menu point Gas analysis Settings Control Remote Setup

Meaning Perform flue gas analysis Modify instrument settings Check operation state of instrument Adjust data transfer

4.2 Flue gas analysis

To perform measurements, select with the cursor keys the sub menu “Gas analysis” and confirm with . The instrument starts a 1 minute calibration phase. If a memory card is inserted, you are asked for internal data processing, which must be answered with = no (internal data processing with the ecom-ST is irrelevant).

Then the suitable fuel must be selected from a table.

Fuel types:

Fuel type

Fuel oil Natural gas City gas Coke oven gas Liquid gas

Fuel oil

CO2max A1 B

15.4

0.50 0.007

Select :

Use the cursor keys to select the desired fuel type and confirm with .

Note
In the case of dusty or sooty combustion gases, a gas treatment system must be installed upstream!

4.3 Measurement screens
The following measurement screens are available:

Flue gas analysis 1 + 2

Flue gas analysis 3

O2 CO2 T.Gas T.Air
Gas analysis

3.2 % 13.1 %
184 °C 20 °C

O2 CO2 CO Efficiency Losses Excess air T.Gas T.Air
Gas analysis

3.2 % 13.1 %
0 ppm 92.5 %
7.5 % 1.18
184 °C 20 °C

Flue gas analysis 4

T.Gas

°C

Gas analysis

Draught measurement
Draught meas.
-0.12 hPa
Stored value: -0.12 hPa

1 Hotkey

2

Switch off CO sensor key

3 Hotkey

4

Indication gas cooler switched on

5

Reset zero point draught sensor

With you can switch from the measured value display to a menu item or a function selected previously (see chapter “Adjustments”).

Possible settings are: Fuel type, Eff. (C), Internal, Adjustments, Standby, Purge.

You can also switch to the measured value display from any menu item while pressing .

The CO sensor can be switched off with in order to protect it from excessively high concentrations. The automatic switch-off takes place at 2500 ppm or 4000 ppm (depending on the model).
With it is also possible to switch from the measured value display to a menu item or a function selected previously (see chapter “Adjustments”). Possible settings are: Fuel type, Eff. (C), Internal, Adjustments, Standby, Display values, Purge.
Adjustment of the measurement screens
NOTE
The position of the measured and calculated values (flue gas analysis) can be changed at user´s choice.
To change the position of the measured and calculated values in the measurement screens 1 to 3, proceed as follows:
1. Activate the function with / “Display values” / . 2. Select the desired line with the cursor keys (up / down). 3. Select the desired parameter with the cursor keys (right / left). 4. Repeat the procedure until the change is completed. 5. Deactivate the function with .
The measured and calculated values in measurement screen 4 can be set with the cursor keys (right / left).

4.4 Draught measurement

Pressure
Draught -0.12 hPa
Recorded value: -0.12 hPa

For an exact measurement, it is advisable to recalibrate the sensor as the differential pressure sensor tends to drift due to its sensitivity. Disconnect the draught hose on the device and press . The sensor is recalibrated. Reattach the draught hose. The display shows the exact measured value, that can be frozen with the key.

4.5 CO overload protection
The CO sensor is protected from overload by the system. If the limit value of 2500 ppm or 4000 ppm (depending on the model) is exceeded at the CO sensor, the additional internal fresh air flushing pump is switched on, which supplies fresh air to the CO sensor. If the CO overload protection is active, the CO indicator flashes in the status bar of the measurement screen and the status LED changes from “green” to “red”.
CAUTION
Damage to the CO sensor The CO sensor can be damaged if the opening for the intake of fresh air (AIR-IN) for the CO sensor is obstructed. The fresh air opening (AIR-IN) must always be free.
When the CO sensor has been sufficiently purged with fresh air (X disappears behind CO) and the measured values are back within the permitted range, the fresh air purging pump is switched off. The CO display in the status bar of the measurement screen no longer flashes and the status LED changes from “red” to “green”.

Control

The electrochemical sensors for gas analysis are exposed to a process of wear and tear and they do age. In the course of their use, they change their initial values depending on the gas concentration, the duration of exposure to gas and the degree of contamination of the measurement gas. The device monitors the sensors and corrects any deviation. However, if these deviations and thus the measurement error to be expected become too large, a message is displayed. In this case the measuring module has to be exchanged.

The current status values for the sensors are displayed in the “Control” menu. The cursor keys can be used to scroll through the 4 control screens.

Indication Sensor #### mV Battery #,## V Operation hours Total operation hrs Next unit check Service tel. Program version Serial number CO purges Error counter

Meaning Output voltage of sensor in mV Output voltage of battery Operation hours since last maintenance Total operation hours Date of next maintenance Phone number of next service centre Version of instrument firmware Serial number of the instrument Number of active CO switch-offs until now Number of error messages displayed since then

ecom GmbH

O2 19744 mV

Am Großen Teich 2 CO

7 mV

58540 Iserlohn Batt 8.09 V

Operation hours: 8.45 hrs

Total

: 18.75 hrs

Next unit check: 01.07.22 Service tel. :0800-945-5000

Further Pages:

Programmversion:V1.14 08.06.21

Serial no.

:ST-0001

CO purges

:15

Error counter :21

Operation hours: 8.45 hrs

Total

: 18.75 hrs

Next unit check: 01.07.22 Service tel. :0800-945-5000

Further Pages:

Indication Last service (history)

Meaning
The last maintenances of the device are listed: date of maintenance, operating hours at the maintenance time.

Last service (history)

19.08.2017 25.08.2018 14.08.2019 23.08.2020 –.–.—.–.–

88 hrs 145 hrs 205 hrs 322 hrs

Further Pages:

Indication Sensor information

Meaning
Information as to age and calibration data of the sensors.

Further Pages:

Adjustments

Adjustments
Alignement Unit Second unit Ref. O2 Fuel type
Select:
Set clock Internal

In addition to the functions of the device already described, various settings can be made in the measuring device that affect the measuring procedures, the functionality or the output and display of measured values.

Parameter Alignment
Unit
Second unit Reference O2 Fuel type Clock set Internal

Meaning Calibration of the sensors
Conversion for the display of the gas concentration on the measurement screen
Second conversion of the gas concentration that can be displayed on the measurement screen O2 oxygen reference Change of the set fuel type Adjustment of internal clock Sub-menus for further adjustments — see following table —

Adjustment field See chapter calibration ppm mg/m³ mg/kWh(undiluted) mg/MJ (undiluted) ppm (undiluted) mg/m³ (undiluted)
As under ,,Unit”
0,0 – 21,0 % Country-specific

NOTE
The units mg/kWh and mg/MJ are always calculated and displayed with a reference oxygen content = 0 %.

NOTE
The specification “undiluted” denotes the conversion of the gas concentration to a definable reference oxygen content according to the following formula:
Eref = Value converted to reference O2 Emeas = measured value O2ref = reference O2 O2gem = measured O2 value

The following settings are available in the Settings / Internal menu:

Parameter Key beep

Meaning
Activation / deactivation of the acoustic signal when a button is pressed

Language: ### Language adjustment

Adjustment field Yes, No Country-specific

Colour scheme Setting of the colours used

F1 Hotkey

Assignment of the link with the key

F4 Hotkey

Assignment of the link with the key

Values options

Setting as to the values ETA, lambda and temperature

USB

Settings for the USB interface

COM module Settings for the COM interface

4 schemes to choose from
See chapter ,,Measurement Screens”
See chapter ,,Measurement Screens”
All setting channels in the table on the following page
All settings in the table on the following page
All settings in the table on the following page

The following settings are available in the Settings / Internal / Values options menu:

Parameter Temperature Exc. air
Eff. (C)

Meaning Not possible by all instruments
Excess air
Efficiency with or without condensate gain

Adjustment field °C or °F Ratio or %
ON, OFF

The following settings are available in the Settings / Internal / USB menu:

Parameter Transfer speed
Protocol

Adjustment field
1200 – 115200 Baud
Enhanced = DAS 5 DAS = DAS NT 2 Modbus RTU Modbus / TCP —- = none

The following settings are available in the Settings / Internal / COM module menu:

Parameter Transfer speed
Protocol

Adjustment field
1200 – 115200 Baud
Enhanced = DAS 5 DAS = DAS NT 2 Modbus RTU Modbus / TCP —- = none

NOTE
Only one Modbus application can be active, either Modbus RTU via RS485 or Modbus / TCP via Ethernet.

6.1 Remote Setup

Remote Setup
Modbus Info Modbus Setup Auto timing Analog output Datalogger
Select:

Modbus, time control and analog outputs (option) can be configured in the Remote Setup menu. The menu item “Modbus Info” enables the control of the Modbus data sent and received. The menu item “Data logger” can be used to record measured values on a memory card.

6.1.1 Modbus
Info The following information is available:

Indication

Meaning

TxD buffer RxD buffer

Received data Sent data

Device address ecom-ST device address

Setup

The following settings can be made:

Example See ecomModbus See ecomModbus Standard setting 2

Parameter

Meaning

Device address

Change of the ecom-ST device address for Modbus RTU

Setting change
Entry after activation with Enter

Current values

Define assignment of measured Selection with cursor

value – memory address:

keys

1. Address 0x3000

Possible measurement

2. Address 0x3001 etc.

values, see next table

Stored values

Define assignment of measured Selection with cursor

value – memory address:

keys

1. Address 0x2000

Possible measurement

2. Address 0x2001 etc.

values, see next table

No. Measured value Meaning

1 T.Air

Air temperature in °C

2 T.Gas

Flue gas temperature in °C

3 T.Sensor

Sensor temperature in °C

4 O2

Oxygen content in vol. %

5 CO

Carbon monoxide content in ppm

6 NO

Nitric oxide content in ppm

7 NO2

Nitrogen dioxide content in ppm

8 SO2

Sulphur dioxide content in ppm

12 CO2

Carbon dioxide content in vol. %

13 Eta

Combustion efficiency in %

14 Losses

Gas losses in %

15 Lambda

Excess air as a ratio or in%

16 Air pressure

Ambient pressure in hPa

17 Draught/P

Pressure in chimney in hPa

18 CO

Carbon monoxide content (adjusted unit)

19 NO

Nitrogen monoxide content (adjusted unit)

20 NO2

Nitrogen dioxide content (adjusted unit)

21 SO2

Sulphur dioxide content (adjusted unit)

24 CO

Carbon monoxide content (adjusted 2nd unit)

25 NO

Nitrogen monoxide content (adjusted 2nd unit)

26 NO2

Nitrogen dioxide content (adjusted 2nd unit)

27 SO2

Sulphur dioxide content (adjusted 2nd unit)

28 NOx

Total nitrogen oxide content in ppm

29 NOx

Total nitrogen oxide content (adjusted unit)

30 NOx

Total nitrogen oxide content (adjusted 2nd unit)

31 Stat:

Not used

32 I.Flow

Gas flow I l/min

6.1.2 Time control
CAUTION
Invalid measurement results Sensor drift phenomena lead to higher inaccuracies. Use the device only with time control!

The following settings can be made:

Parameter Meaning

Interval time Total time per cycle

Measuring time
Automatic

Time during which the measured values are available. At the end of the measuring time, a data record is saved under 0x2000 and following.
Switching on the automatic mode. Operation without time control is not permitted.

Adjustment change Entry after activation with Enter: 10 to 2550 minutes
Entry after activation with Enter: 5 to 60 minutes
ON / OFF after activation with Enter

6.1.3 Configuring the Analog outputs (option)

Gas analysis Adjustments Control Remote setup

31 Stat: 2 T.Gas
12 CO2 4 O2 5 CO 6 NO 7 NO2
28 NOx

20.0 0.00 0.00
0 0.0 0.0 0.0

400.0 °C 20.00 %
5.00 % 500 ppm
100.0 ppm 10.0 ppm
100.0 ppm

1. Switch on instrument. 2. Select “Remote setup” with Enter. 3. Select “Analog outputs” with Enter. 4. Select desired value with cursor keys
(left/right). 5. Confirm with Enter. 6. Input 4 mA value via numerical keys. 7. Confirm with Enter. 8. Input 20 mA value via numerical keys. 9. Confirm with Enter.

The status of the device can also be queried via the analog outputs (31 Stat :). It is only possible to assess whether the measured values are valid in connection with the status of the device. The table below lists all possible statuses.

Analog value 4 mA 6 mA 7 mA 8 mA 9 mA 10 mA
20 mA

Meaning Device error
Calibration phase not finished
Device on standby
Sample gas pump off
Fresh air purging active
Device in measuring mode, but the CO sensor is switched off Device in measuring mode

NOTE
Valid measured values are only available if the status is 20 mA.

Data Processing

7.1 Data logger

NOTE
The data logger can only be used if an SD card is inserted in the device.

When an SD card is inserted in the device, a data logger recording can be carried out. Depending on the set recording interval, the measured values are saved one after the other on the SD card and combined in a file with the * .csv format. The measured values can be evaluated using MS Excel or OpenOffice CALC.
The following settings can be made in the Data processing / Data logger menu:

Parameter Data logger Storage time
CSV header

Meaning
Start/Stop
Recording interval
Setting whether column headings are included in the CSV file

Adjustment field Yes, No 1 s – 999 s
ON, OFF

When the data logger gets active or becomes active again after an interruption, a new file is created on the SD card in which all subsequent measured values of the recording are saved. The files have a predefined name and are numbered consecutively.
Example:
· ST_DL-00.csv oldest file · ST_DL-01.csv · ST_DL-02.csv · ST_DL-xx.csv latest file

7.2 Data connection to the PC
If the device is connected to a PC, measured values can be recorded with PC software from ecom.
The following software solutions are available:
· ecom-DAS NT 2 · ecom-DAS 5
7.2.1 ecom-DAS NT2
In addition to the data logger recording, the data can also be transferred directly to the PC software “ecom-DAS NT 2” while the measuring operation is running.
The USB interfaces can be used for communication with the software. The transmission speed and the protocol are predefined for smooth communication between the device and the DAS NT 2 PC software via the USB interface.
To enable communication with the DAS NT 2 PC software, the following settings must be made in the Settings / Internal / USB menu:

Parameter

Adjustment field

Adjustment for DAS NT 2

Transfer speed 1200 Baud – 115200 Baud 1200 Baud

Protocol

DAS = DAS NT 2 Enhanced = DAS 5 —- = none

DAS

NOTE
A driver is required for the communication between the device and the DAS NT 2 PC software via the USB interface. Download under: https://www.ecom.de/en/downloads/

7.2.2 ecom-DAS 5
The software “ecom-DAS 5” can be used for the display and logging of measured values and measured value progressions. Measurement data can be exchanged between the software and the device via the SD card. A recording of point measurements and course measurements during the measuring operation can be implemented via USB.
The transmission speed and the protocol are predefined for smooth communication between the device and the DAS 5 PC software via the USB interface.

Parameter

Adjustment field

Adjustment for DAS 5

Transfer speed 1200 Baud – 115200 Baud 1200 Baud – 38400 Baud

Protocol

DAS = DAS NT 2 Enhanced = DAS 5 —- = none

Enhanced

NOTE
A driver is required for the communication between the device and the DAS 5 PC software via the USB interface. Download under: https://www.ecom.de/en/downloads/

7.3 ecomModbus

To integrate the ecom-ST into your existing software, please use the ecomModbus documentation.

Maintenance

To ensure the accuracy of your measuring device, we recommend to have the modules checked annually by an authorized partner of ecom GmbH. In case of heavy use, shorter inspection intervals should be considered. Just contact your ecom partner this regarding!
NOTE
If sensors or probes from other manufacturers are used, the TÜV approval of the device is no longer valid! Only use sensors or probes provided by ecom GmbH or from an ecom-authorized service center!
NOTE
If service work is not carried out by ecom GmbH or a service center authorized by ecom GmbH, the warranty for the device expires with immediate validity!
8.1 Fine dust filter
The fine dust filter should be checked regularly as follows: 1. Unscrew the cover cap. 2. Check the condition of the fine dust filter. 3. Screw the cover cap back.
NOTE
The fine dust filter should be changed when the grey colour value corresponds to <3 of the soot comparison scale.

8.2 Gas sensors
The gas sensors are calibrated with fresh air as the reference gas each time the device is switched on. New sensors age in the course of use due to wear and tear of the reagents (oxygen sensor) and due to contamination or exposure to concentrations above the nominal measuring range (toxic sensors). The condition of the sensors is permanently monitored by the device. In the “Control” menu, the values for the output voltage of each installed gas sensor can be checked. The reference values of the sensors are:

Sensor O2 Others

Reference value output voltage 12000 mV 0 mV (±150 mV)

NOTE
The O2 sensor must display a value >7000 mV. If this is not the case, the sensor must be replaced. Contact the ecom service centre next to you!

NOTE
If an error message occurs during the calibration phase, a further calibration phase can help to calibrate the sensors sufficiently. If the error message persists, the device must be checked.

NOTE
The CO sensor is protected from high concentrations by overload protection (see chapter “CO overload protection”).

8.3 Calibration

The sensors can be calibrated by using the menu “Adjustments” / “Calibr. sensors”. When the calibration menu is selected, the device switches to the Air-IN gas input on the gas processing module. Here the calibration gas must be applied without pressure. Proceed as follows:

-CO / NO / NO2 / SO2 calibration

(Important: Span gas must get pressure-free to the instrument!)

-Flow with span gas

-Wait for stabilisation of value

Span gas used by ecom

-By drift press

(appoximate value):

-Set correct value with number keys -Confirm input with
-T. Gas / T. Air calibration -Create reference temperature -By drift press -Set correct value with number keys

Sensor CO;O2 NO NO2 SO2 CO%

Span gas
400 ppm CO with 2% O2 rest N2
90 ppm NO rest N2
90 ppm NO2 rest synthetic air
100 ppm SO2 rest N2
3% CO rest N2

-Confirm input with

8.4 Removal / re-installation of modules
8.4.1 Gas measuring module
Removal 1. Pull off the hoses. 2. Loosen the 4 screws fixing the gas
measuring module. 3. Pull the gas measuring module out of
the device.
Reinstallation Insert gas measuring module into device. Tighten the 4 screws. Push the hoses onto the turned parts.
8.4.2 Gas processing module
Removal 1. Pull off the hoses. 2. Loosen the 4 screws. 3. Pull the gas processing module out
of the device.
Reinstallation 1. Insert gas processing module into
the device. 2. Tighten the 4 screws. 3. Slip the hoses over the turned parts.

8.5 Probe/Tubing
Depending on how the device is used, the probe and hose should be cleaned regularly in order to remove particle deposits and prevent premature wear due to corrosion. The hose can be cleaned after loosening all plug connections on the device and on the probe handle. The O-rings of the hose connections should occasionally be lightly greased with acid-free lubricant.
CAUTION
Damage to the device / transport system The hot flue gas probe can damage the device or the transport system if it comes into contact with. Let the probe cool down before storing!
8.6 SBK system (option)
The PTFE filter in the probe head should be changed regularly.

Technical Data

Measured values O2 CO CO H2- comp. CO% NO NO Extra Low NO2 NO2 Low SO2 SO2 Low H2 H2S CO2 CO2 CH4 CxHy T-Gas T-Air pressure Air pressure

Range EC 0 vol. % – 21 vol. % EC 0 ppm – 4000 ppm EC 0 ppm – 10.000 ppm EC 0 ppm – 63.000 ppm EC 0 ppm – 5000 ppm EC 0 ppm – 300 ppm EC 0 ppm – 1000 ppm EC 0 ppm – 100 ppm EC 0 ppm – 5000 ppm EC 0 ppm – 100 ppm EC 0 ppm – 20.000 ppm EC
IR 0 vol.% – 20 vol.% IR 0 vol.% – 100 vol.% IR 0 vol.% – 5 vol.% K 0 vol.% – 4 vol.% T 0 °C – 500 °C PT 0 °C – 99 °C D 0 hPa – ± 100 hPa D 300 hPa – 1100 hPa

Accuracy ±0,3 vol. % ±20 ppm / 5 % MV ±20 ppm / 5 % MV ±100 ppm / 5 % MV ±5 ppm / 5 % MV ±2 ppm / 5 % MV ±5 ppm / 5 % MV ±5 ppm / 5 % MV ±10 ppm / 5 % MV ±5 ppm / 5 % MV ±100 ppm / 5 % MV ±10 ppm / 5 % MV ±0,5 vol. % / 5 % MV ±5 vol. % ±0,2 vol. % / 5 % MV
±2 °C / 1,5 % MV ±1 °C ±0,5 hPa / 1 % MV* ±2 hPa

EC = Electrochemical sensor IR = Infrared sensor K = Catalytic Sensor
T = Thermocouple NiCr-Ni PT = PT 2000 D = DMS bridge MV* = Measured value (higher value prevails)

Calculated values CO2 Efficiency (ETA) Losses Excess air (Lambda) Dew point mg/m3 mg/kWh O2 reference

Range 0 – CO2max 0 % – 120 % 0 % – 99,9 % 1 – x °C x mg/m3 x mg/kWh x % O2

Principle Calculation Calculation Calculation Calculation Calculation Calculation Calculation Calculation

Further data Power supply Ambient temperature Air humidity ecom-ST Dim. (W x H x D) Weight Protective housing Dim. (W x H x D) Weight

110 V – 230 V AC, internal battery 7,4 V 3,45 Ah +5°C – +40°C max. 90 % rH, non-condensing
Approx. 483 (19″) mm x 266 (6HE) mm x 196 mm Approx. 8,6 kg (option) Approx. 600 mm x 350 mm x 265 mm ecom-ST with protective housing approx. 25 kg

NOTE
Subject to technical changes! (Status 10 2023)

Disposal
Take used batteries to the designated collection points! Dispose of packaging material in an environmentally friendly manner! Used devices must be disposed of in an environmentally friendly manner by an authorized agency.

FAQ

NOTE
On request, we can take back used devices and dispose of them in an environmentally friendly manner.

Where can I find important instrument information?
The instrument shows the error message “O2 sensor mV too low” The instrument shows the error message “xx sensor mV too high”

Important device information can be called up with the Info button (Control menu):: · Serial number · Service phone number · Sensor voltages · Sensor information · Error counter · Operation hours etc.
The sensor module must be replaced. The sensor module must be replaced.

ecom GmbH Am Großen Teich 2 D-58640 Iserlohn Info@ecom.de www.ecom.de
Phone: +49 2371 945-5 Fax: +49 2371 40305
UK importer:
DRM Technic Ltd. Unit 25 Raleigh Hall Industrial Estate, Stafford, Staffordshire, ST21 6JL, UK sales@drmtechnic.com www.drmtechnic.com
Phone: +44 (0) 1785 556 593

References

• Gas Analysis | Instrumentation | Control | DRM Technic
• Messgeräte zur Abgasanalyse, Druckmessung & Lecksuche | ecom
• Messgeräte zur Abgasanalyse, Druckmessung & Lecksuche | ecom
• Gas Analysis | Instrumentation | Control | DRM Technic
• Download Area - ecom

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