PID-A12 Photo Ionisation Detector

PERFORMANCE
Target gases                  VOCs with ionisation potentials                 < 10.6 eV
Minimum resolution         ppb isobutylene                                                < 50
Linear range                   ppm isobutylene 5% deviation                           300
Overrange                      ppm isobutylene                                               6000
Sensitivity linear range   mV/ppm Isobutylene, see Table 1 for options   > 0.3
Full stabilisation time      minutes to 100 ppb                                               20
Warm up time                 seconds time to full operation                                 5
Offset voltage                 mV                                                               50 to 59
Response time (t90)       seconds diffusion mode                                       < 3

ELECTRICAL
Power consumption      85 mW (max) at 3.2 V, 350 mW transient for 200 msec on switch-on
                                     90 mW at 3.3 V, 460 mW transient for 200 msec on switch-on
Supply voltage              3.2 to 3.6 VDC Ideally regulated ±0.01V (onboard regulator disabled)
                                     3.6 to 10 VDC (onboard regulator enabled)
                                     (maximum 10V for IS approval, maximum 18 V for non-IS)
Output signal                Offset voltage (minimum 50 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℃ < Ta < +55℃ (< 10VDC supply)
Onboard filter           To remove liquids and particulates
Lamp                        User replaceable
Electrode stack         User replaceable
Error state signal      Lamp out: 32 ±4 mV
                                 Electronic error: 22 ±6 mV
Weight                      < 8g
Position sensitivity    None 
Warranty period       Electronics and housing: 24 months
                                Lamp and electrode stack are user replaceable. 10.6eV lamp: 5000 lit hours