GSE 401 for Oxygen Datasheet

Gas sensor GSE 401 for detection of Oxygen O2 Mode of operation The principle of the measurement cell used is based on the diffusion of oxygen. The O2 diffuses through the gas-permeable diaphragm onto the gold cathode, and is reduced on it. The current flowing between the electrodes is proportional to the concentration, and will then be amplified and be led to the evaluation device by the transmitter. 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. Data and design subject to change without notice GSE401 250507mb Performance Characteristics Sensitivity: at least 0,5 Vol.% Measuring range: max. 25 Vol.% / linear Response time t 95: < 10 seconds Operating temperature: -20 °C ... +45°C Start up after reconditioning: max. 1 h Pressure range: atmospheric ± 10% Air humidity: 0...99% non condensing Position sensitivity: none Long term output drift: < 5 % / year Life span at 20 °C: at least 1 year/ max 2 years depends on the application Warranty period: 6 months Cross sensitivity to other gases Test gas concentration display on the of the test gas O2-Sensor Ammonia NH3 100 ppm 0 ppm Chlorine Cl2 ... ppm ... ppm Ethylene C2H4 ... ppm ... ppm Carbon Dioxide CO2 5‘000 ppm 0 ppm Carbon Monoxide CO 250 ppm 0 ppm Propane C3H8 5‘000 ppm 0 ppm Sulphur Dioxide SO2 ... ppm ... ppm Hydrogen Sulphide H2S 100 ppm < 1 ppm Nitrogen Dioxide NO2 20 ppm < 1 ppm Nitric Oxide NO 48 ppm < 1 ppm Hydrogen H2 100 ppm 0 ppm Sensor electronic specification Cable: 2-core cable, shielded Power supply: 13.5...30 VDC Sensor current: max. 60 mA Output signal: 4...20 mA/max. 60 mA Operating temperature: -40 °C ... +85 °C Inspection (Maintenance) The sensor and the electronic require an inspection. Routine calibration is recommended once or twice a year. Electronic Dimensions 0-Punkt/Zero 4 mAVerstärkung/Gain 20 mA4..20 mAKlinker 3,5 mm3 4 connector formeasuring cellgas sensor serie GSEMesszellen-AnschlussGasmessfühler Serie GSE24 VDC4-20 mA Signal 748065