• head_banner_01

BM08 Ex modular gas analyzer

Short Description:

The BM08 Ex modular gas analyzer series measures the volume percentage (i.e. concentration) of one or several gases in a gas mixture (sample gas).

This product won the Bronze Award of the first “Golden Sui Award” China photoelectric Instrument Brand List in 2022.

Product Detail

Product Tags

Measurement principle

The BM08 Ex modular gas analyzer is based on the infrared photoacoustic method to achieve multi-component detection. A variety of measurement modules can be optional to meet the requirements of measuring multiple gas concentrations. Available modules include infrared photoacoustic module, paramagnetic detection module, electrochemical detection module, thermal conductivity detection module or trace water detection module. Up to two thin-film microsound detection modules and a thermal conductivity or electrochemical (paramagnetic oxygen) module can be assembled simultaneously. According to the range, measurement accuracy, stability and other technical indicators, the analysis module is selected.

Technical parameter

Measuring component:CO、CO2、CH4、H2、O2、H2O  Etc.

Range:CO、CO2、CH4、H2、O2 constituent:(0~100)% (Different specifications can be selected within this range)

H2O:(-100℃~20℃)perhaps(0~3000)x10-6,(Different specifications can be selected within this range)

Minimum range: CO :(0~50)x10-6





N2O :(0~50)x10-6

H2O :(-100~20)℃

Zero drift :±1%FS/7d

Range drift :±1%FS/7d

Linear error :±1%FS

Repeatability :≤0.5%

Response time:≤20s

Power :﹤150W

Power supply:AC(220±22)V  50Hz

Weight :about 50Kg

Explosion-proof class :ExdⅡCT6Gb

Class of protection :IP65

asd (2)

Instrument characteristics

●Multiple analysis modules: Up to 3 analysis modules can be installed in an analyzer. An analysis module includes the basic analysis unit and the necessary electrical components. Analysis modules with different measurement principles have different performance.

●Multi-component measurement: BM08 Ex analyzer with a time interval of 0.5…20 seconds (depending on the number of components measured and the basic measurement range) measures all components simultaneously.

●Explosion-proof housing: According to the different optional modules, Ex1 unit can be selected separately, Ex1+Ex2 unit can also be used at the same time, Ex1+ two Ex2 can also be used.

●Touch panel: 7 inch touch panel, can display real-time measurement curve, easy to operate, friendly interface.

●Concentration compensation: can compensate the cross interference to each component.

●Status output: BM08 Ex has 5 to 8 relay outputs, including zero calibration state, terminal calibration state, fault state, alarm state, etc. Users can select the corresponding output position for a certain status output according to the actual situation.

●Data retention: When you perform calibration or other operations on the instrument, the instrument can maintain the data status of the current measurement value.

●Signal output: standard current loop output, digital communication.

(1) There are 4 analog measurement outputs (4... 20mA). You can select a measurement component corresponding to a signal output, or you can select a measurement value output corresponding to multiple output channels.

(2) RS232, MODBUS-RTU that can be directly connected to the computer or DCS system.

●Intermediate range function: that is non-zero starting point measurement.

●Zero gas: For zero calibration, two different zero gas values can be set as nominal values. This allows you to calibrate different analysis modules that require different zero gases. You can also set negative values as nominal values to compensate for lateral sensitivity interference.

●Standard gas: For terminal calibration, you can set 4 different standard gas nominal values. You can also set which measurement components are calibrated with which standard gases.

Product application

●Environmental monitoring such as emissions of air pollution sources;

●Petroleum, chemical and other industrial control;

●Agriculture, health care and scientific research;

●Calorific value analysis of natural gas;

●Determination of gas content in various combustion tests in laboratory;

●The BM08 Ex modular gas analyzer is mainly used in explosion-proof applications for industrial control.

Analysis module

Measurement principle

Measuring component




Infrared photoacoustic method

CO、CO2、CH4、C2H6、NH3、SO2 Etc.


Thermal conductivity type



Thermomagnetic type






Electrochemical formula



Trace water content


asd (3)
asd (4)

  • Previous:
  • Next:

  • Write your message here and send it to us