Many applications require measurement of a single gas only. For such applications we offer OEM type, single sensors. Its compact construction allow us to fit on a common chassis: sensor in gas chamber, measurment electronic board, analogue and digital outputs, and other necessary parts of gas channel, like gas pump or solenoid valve.


  • SingleElch is OEM type device equipped with a single electrochemical cell. Sensor is available for gases: O2, CO, NO, SO2, NO2, H2S, NH3.
  • Advanced, microprocessor based electronics provides precise gas measurement.
  • Built-in temperature sensors provide thermal compensation in wide range of temperatures. Device is supplied from a wide voltage range.
  • Measurement results are available as analogue signal: current (4mA ÷ 20mA) or voltage, or can be transmitted digitally via RS-232C interface.
  • In the minimal configuration, device consists of electronic board mounted on chassis with a gas chamber with electrochemical cell.
  • Additionally it may be equipped with diaphragm pump for sample collection and solenoid valve for automatic, periodical ventilation and zeroing. Also, it is possible to equip it with LCD display for presenting the results and aluminum housing.

Tech specs

General parameters
Dimensions (W x H x D) 73mm x 120mm x 86mm
Weight 150g ÷ 300g
Storing temperature 0°C ÷ 60°C
Operating conditions T: 10°C ÷ 50°C, RH: 5% ÷ 90% (non-condensing)
Power supply: input | maximal power consumption 13V ÷ 30V DC | 15W
Temperature sensor: type | range PT500 | -10°C ÷ 100°C
Communication interface with PC computer RS-232C
Analogue output (opto-isolated) Current 0/4mA ÷ 20mA or voltage 0V ÷ 10V
Display (optional) 4.5 digit
Gas pump (optional) Diaphragm, max 0.6l/min. ÷ 0.9l/min.
Ventilation valve (optional): type | maximal pressure 2-way | 2bar


Drawing #1
Sensor’s base (chassis)
Drawing #2
Solenoid valve WTB-3R(K)-N4F(G) - 504J0002A.M
Drawing #3
Gas pump SP550 EC 3Vdc (501A0009A)
Drawing #4
Hydrophobic filter 1µm (614Z0009A)
Drawing #5
4.5 digit LCD display