PID-AH Photo Ionisation Detector Gas Sensor, Brand Name : Alphasense

Performance
target gases
minimum detection level 1 ppb isobutylene
linear range 50 ppm isobutylene 3% deviation
overrange 50 ppm isobutylene
sensitivity > 20 linear range mv ppm isobutylene
full stabilisation time 20 minutes to 20 ppb
warm up time 5 seconds time to full operation
offset voltage 46 to 60 mv variable between detectors
response time (t90 )
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 -40℃ to +55℃ (intrinsically safe); -40℃ to +65℃ (non-is)
temperature dependence 0℃ to 40℃ 90% to 100% of signal at 20℃
-20℃ 140% of signal at 20℃
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 -40℃ < t.