EC4-1000-H2S

EC4-1000-H2S Hydrogen Sulfide Electrochemical Sensor PERFORMANCE OUTLINE Range ...............................................................0 - 1000 ppm Sensitivity.............................................50 - 130 nA/ppm H2S Zero in air at 20 C........................................... <8 ppm H2S Resolution............................................................ 1 ppm H2S Expected lifetime ....................................................... 2 years Linearity ...................................................linear across range Response time, t90....................................................... <45 s Long-term output drift..................change in output per month OPERATING CONDITIONS Temperature range ...........................................-20 to +50 C Temperature coefficient ......................... <0.5% signal per C Operating humidity................15 - 90% RH (non-condensing) Pressure range ..................................90 - 110 kPa (nominal) Operating circuit............... see Electrochemical Toxic Sensor Application Note Applied potential ..............................................................0 V Storage life........... 6 months in original packaging (0 - 25 C) PHYSICAL CHARACTERISTICS Label colour ...................................................................silver Weight............................................................................... 6 g Dimensions ...........................................................see outline This device is designed to be RoHS compliant. CROSS-SENSITIVITY DATA GAS Concentration Sensor (ppm) Response (As ppm H2S) Carbon Monoxide 300 0 Sulfur Dioxide 5 0 Nitric Oxide 35 <3 Nitrogen Dioxide 5 0 Hydrogen 1000 0 Isobutylene 100 0 Important Note Do not solder to the connector pins as this may damage the sensor and thereby invalidate the warranty. Details on recommended connector pins can be found in the Frequently Asked Questions within the Gas Sensor section of the SGX website. SGX Sensortech(IS) Ltd Registered in England No.08067077 A1A-764712 Version 3, October 2009 TEMPERATURE DEPENDENCE EC4-1000-H2S Graph of Zero vs Temperature 30 25 20 15 10 Average 5 +95% conf -95% conf. 0 -20 -10 0 10 2030 4050 -5 -10 -15 -20 Temperature/Degrees Celsius EC4-1000-H2S Graph of Net Sensitivity vs Temperature 120 100 80 Average 60 +95% conf -95% conf. 40 20 0 -20 -10 0 1020 304050 Temperature/Degree Celsius SGX Sensortech(IS) Ltd Registered in England No.08067077 A1A-764712 Version 3, October 2009 Zero/ppm H2S Sensitivity 20 deg C