PID-A1 Photo Ionisation Detector - PID-A1

Target gases VOCs with ionisation potentials < 10.6 eV
Minimum resolution ppb isobutylene < 50
Linear range ppm isobutylene 5% deviation 300
Overrange ppm isobutylene 6,000
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

  • Model Number: PID-A1
  • Data Sheet: Date Sheet File
Quantity:
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  • PID-A1 Photo Ionisation Detector
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Product Specification

Figure 1 PID-A1 Schematic Diagram

 


Notes:
1. Do not obstruct Ø3.5 sensing area
2. Seal between Ø6.2 and Ø9.0 (if different to atmosphere)
3. Pin out details:
. Pin 1: + V supply (See note 5)
Pin 2: Signal output
Pin 3: 0 V supply
4. All dimensions ±0.1mm unless otherwise stated

5. Input voltage selector hole:
a) When filled with solder the onboard regulator is disabled
A regulated supply of 3.0 - 3.6 V (typically 3.0 V) is then required.
b) When not filled with solder the onboard regulator is enabled.
A regulated or unregulated supply between 3.6 - 10 V is then required
for IS applications, or up to 18 V for non-IS applications
Normally shipped with regulator disabled.


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

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