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Help CenterPID-AH2 Tvoc Detector Sensor Photo Ionisation Sensor Photo Sensor
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PID-AH2 Photo Ionisation Detector
PERFORMANCE
Target gases VOCs with ionisation potentials < 10.6 eV
Minimum detection level ppb isobutylene 1
Linear range ppm isobutylene 3% deviation 50
Overrange ppm isobutylene 50
Sensitivity linear range mV / ppm Isobutylene > 20
Full stabilisation time minutes to 20 ppb 20
Warm up time seconds time to full operation 5
Offset voltage mV variable between detectors 46 to 60
Response time (t90 ) seconds diffusion mode < 3
ELECTRICAL
Power consumption 85 mW (max) at 3.2 V, 300 mW transient for 200 msec on switch-on
Supply voltage 3.2 to 3.6 VDC Ideally regulated ±0.01V (onboard regulator disabled)
3.2 to 10 VDC (onboard regulator enabled)
(maximum 10V for IS approval, maximum 18 V for non-IS)
Output signal Offset voltage (minimum 46 mV) to Vmax
(Vmax = Vsupply -0.1 V when regulator is enabled)
ENVIRONMENTAL
Temperature range -40ºC to +55ºC (Intrinsically Safe); -40ºC to +65ºC (non-IS)
Temperature dependence 0°C to 40°C 90% to 100% of signal at 20°C
-20°C 140% of signal at 20°C
Relative humidity range Non-condensing 0 to 95%
Humidity sensitivity During operations: 0% to 75% rh transient near zero
KEY SPECIFICATIONS
Operating life 5 years (excluding replaceable lamp and electrode stack)
IS Approval IECEx Ex ia IIC T4; ATEX Ex ia II 1G -40ºC < Ta < +55ºC (< 10VDC supply)
Onboard filter To remove liquids and particulates
Lamp User replaceable
Electrode stack User replaceable
Error state signal Lamp out: 35 mV
Weight < 8g
Position sensitivity None
Warranty period Electronics and housing: 24 months
Lamp and electrode stack are user replaceable. 10.6eV lamp: 5,000 lit hours
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