ADOS GmbHInstrumentation and Control P.O. Box 500 444 52088 Aachen ׷ FRG Trierer Strasse 23 25 ַ 52078 Aachen FRGTel: +49 (0) 241 / 97 69 - 0Fax: +49 (0) 241 / 97 69 - 16 E-Mail: [email protected] www.ados.de >

The gas transmitter ADOS GTR 196 is suitable for continuous measurement of gases in normal areas and areas where there are risks of explosion.By employing 5 different types of sensor, noxious, explosive and non-combustible gases and vapours can be measured.A current signal is generated that is proportional to the measured concentration of gas, which is transmitted to an evaluation unit placed in a safe area, away from any dangers of explosion.The type test of the explosion-protected gas transmitter, is completed by the KEMA.KEMA test certificate: KEMA 03 ATEX 2403 XDegree of protection: Ex demb...

The GOW sensor functions on the principle of thermal conductivity. Two rhenium-tungsten resistors are used as a measuring element, where the comparison element is subjected to normal ambient air and the measuring element is subjected to the test gas. Any change in the concentration of gas at the measurement element, causes a change in temperature, which is due to the variation of conductivity. The resultant change in resistance is a direct measure of the gas concentration. > 1 = Diffusion filter2 = Test resistor 3 = Comparsion resistor 1 = Anode2 = Electrolyte 3 = Cathode 4 = Diffusion path 5...

Measurement method Semiconductor Heat reduction Thermal conductivity Electro-chemical cell InfraredMeasurement rangeppm ranges to 100 % LELppm ranges to 100 % LELfrom 05 Vol %to 0֖100 Vol %ppm ranges to 0100 Vol % 0-100 % LEL CH > 4 , C > 3 H > 8 , C > 2 H > 2 0-100 Vol % CH > 4 0-1, 2, 3, 4, 5 Vol % CO > 2 Percentage error of f.s.d. ֱ 5 % 5 %ѱ 5 % 3 %ѱ 3 %Temperature range-20 C to +45 аC-20 C to +45 аC-20 C to +45 аC-20 C to +45 аC-20 C to +45 аC Temperature effect5 %2 %2 %2 %approx. 8 % Response time (t > 90 )approx. 20 sec.approx. 20 sec.approx. 20 sec.approx. 20 sec.< 30 sec.Pressure effect1...