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CH-D3

CH-D3
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CH-D3 Combustible Gas Pellistor Miniature Size Technical specifications Version 1.0 CH-D3 Combustible Gas Pellistor – Miniature Size Plan View Top View Bottom View Underside View Sensitivity Sensitivity Response timetime Response Zero Zero Range Range Linearity Linearity Side View Side View mV / % methane mV / % t90 from methane 50% LEL(s) air to methane (s) t90 from air to 50% LEL methane mV zero mV in in zero airair % LEL methane % LEL methanenon-linear % methane when 5% % methane when 5% non-linear Sensitivity @ -20°C Sensitivity @ 50°C Zero @ -20°C Zero @ 50°C Temperature Range Humidity % sensitivity change, referenced to 20° % sensitivity change, referenced to 20°C % LEL change, referenced to 20°C % LEL change, referenced to 20°C Certification to T4 12% sensitivity loss from 0 % to 80 % rh (22°C) Typical zero increase % LEL from 0 to 80 %rh (22°C) Sensitivity change from 0 to 75 kPa (gauge) VIRONMENTAL Sensitivity @ -20°C % sensitivity change, referenced to 20°C 101. Sensitivity @ 50°C % sensitivity change, referenced to 20°C 10 Zero @ -20°C % LEL change, referenced to 20°C Zero @ 50°C % LEL change, referenced to 20°C < 1.0 <+ Pressure < 3% Temperature Range Certification to T4 -4 Humidity Chlorine 12%12hrs 20ppm Cl , 50 % sensitivity loss, 2-day recovery % 10% loss sensitivity loss from 0 % to 80 < rh (22°C) Inhibition/Poisoning Hydrogen Sulphide 12hrs 40ppm H S, 50 % sensitivity loss, 2-day recovery < Typical zero increase % HMDS from 0 to50% loss LEL 80 %rh (22°C) HMDS hrs until 50% activity loss @ 10ppm < 10 PressureOptional H S disposable filter can be ordered. Part no. ASF-2 0 to 75 kPa (gauge) Sensitivity change from 2 IBITION/POISONING Power consumption mW 190 % 20ppm Cl , 50% <3 Chlorine Voltage sensitivity 12hrssensitivity change /20.1V change sensitivity loss, 2 day recovery < Hydrogen Sulfide 12hrs 40ppm H2S, 50% sensitivity loss, 2 day recovery < Weight g < 10 Key Specifications HMDS Operating life hrs until until 75% original sensitivity (24-month 10ppm HMDS months 50% activity loss @ warranted) < 24 Optional H2S disposable filter can be ordered. Part no. ASF-2 Table 1 Sensitivity Hydrocarbon/Gas Hydrocarbon/Gas ECTRICAL Voltage Methane V (±0.2 V) relative to to Methane relative to Methane Hydrogen 120 to 140 150mW to 175 Heptane 190 to 220 Power consumption Ethane 120 to 140 to 200 to 230 Voltage sensitivity 200%230 sensitivity Octane change / 0.1V change Propane Y Weight Hexane 190 to 220 ECIFICATIONS Operating life n-Pentane 275 to 320 g 860 to 900 Isobutylene 170 to 190 425 to 475 months until 75% original sensitivity (24 month warranted 570 to 670 For further information on the performance of this sensor, on other sensors in the range or any other subject, please contact Alphasense Ltd. or visit our websit

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Perf erformance Data CH-D3 Performance Data Technical specifications Version 1.0 Figure 1 Voltage Sensitivity CH-D3 Performance Data Perf erformance Data Figure 2 Voltage Sensitivity % sensitivity (sensitivity at 3.2V) % sensitivity / (sensitivity/ at 3.2V) Figure 2 shows the variation in sensitivity caused by changes in pellistor voltage. The pellistor is relatively Figure 2 shows the voltage insensitive to small variation in sensitivity caused by variations at 3 shows avoiding Figure 1 volts, the variation in sensitivity caused by changes in pellistor voltage. individual bridge voltage...

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