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Kimessa GSE 507 Carbon Monoxide CO Gas Sensors
GSE 507

GSE 507 Carbon Monoxide CO Gas Sensors Description

The principle of the measurement cell used in the gas sensor is based on the electro-chemical oxidation of carbon monoxide CO to carbon dioxide CO2. The CO in the measurement air reaches the working electrode via a gas-permeable diaphragm, and is oxidised. The oxygen molecule used for this is replaced from the ambient air. This results in the very long service life of the measurement cell, which, from experience, can operate for several years.
The measured gas concentration is linear to the electrical output signal of the gas measurement probe. The potentiometers and the 3.5 mm jack connection for the calibration are accessible from the outside, and permits a "one-man" calibration. When used in a pump system, the service life can be heavily reduced, as the electrolyte evaporates more quickly through the porous diaphragm. The measurement cell is sensitive to solvent vapours.
The calibration gas should be 75% of the measurement range, and must contain synthetic air as the carrier gas.


Performance characteristics
Sensitivity: at least 1 ppm
Measuring range: max. 1000ppm / linear
Standard Calibration: 0...100 / 0...250 ppm
Response Time t 90: ≤ 30 sec
Operating temperature: -20 °C ... +50 °C
Start up after reconditioning: max. 1 h
Pressure range: atmospheric ± 10%
Air humidity: 15...90% non condensing
Position sensitivity: None
Long term output drift: <5% / year
Life span at 20 °C at least 3 years (depends on application)

Cross sensitivity to other gases
Test gas Concentration of test gas CO sensor display
Chlorine Cl2 1 ppm 0 ppm
Hydrogen Chloride HCL 5 ppm 0 ppm
Hydrogen Cyanide HCN 10 ppm <2 ppm
Ethylene C2H4 100 ppm ≤100 ppm
Ethanol C2H5OH 200 ppm 0 ppm
Carbon Monoxide CO 250 ppm 250 ppm
Surphur Dioxide SO2 5 ppm 0 ppm
Hydrogen Sulphide H2S 15 ppm <0.3 ppm
Nitric Oxide NO 35 ppm ≤7 ppm
Hydrogen H2 100 ppm <60 ppm

Sensor electronic specification
Power Supply: 13.5 ... 30VDC
Sensor Current: max. 60mA
Output Signal: 4...20mA / max. 60mA
Operating temperature: -40 °C ... +85 °C

Wiring Diagram
GSE507 wiring diagram

Dimensions (mm)
GSE507 Dimensions