Product Introduction
1. PID Photoionization Gas Sensor/TVOC Detection Sensor PID-AH Product Description:
PID-AHPhotoionization gas sensorCan detect VOC gases at 1 ppb and can detect over 2000 different VOC gases. Many hazardous material raw materials contain VOCs. Due to its high sensitivity to VOCs, PID has become an indispensable practical tool for early hazard warning and leak monitoring of hazardous substances. It is very suitable for ambient air quality monitoring systems and instruments.
2. PID Photoionization Gas Sensor/TVOC Detection SensorPID-AHMain Features:
1. A-series standard size with miniature focusing light source.
2. Measurement range: 1 ppb - 40 ppm
3. Operating environment: -40~55°C, relative humidity 0-95%
4. Supply voltage: 3.2-3.6V (regulator not used); 3.2-10.0V (regulator used)
5. Output voltage: zero point (>46 mV) ~ Vmax (supply voltage -0.1V @ regulator used)
6. Power consumption: 85mW (3.2V supply)
7. Overload: 50 ppm (reference isobutylene)
8. Response time less than 3 seconds in free diffusion mode
9. Service life greater than 5 years (excluding UV lamp and grid)
10. A-series standard size pins
3. PID Photoionization Gas Sensor/TVOC Detection Sensor PID-AH Performance
| Target Gas | VOC gases with ionization constant <10.6 eV | |
| Detection Value | (PPB isobutylene) | 1 |
| Linear Range | (PPM isobutylene) | 40 |
| Range | (PPM isobutylene) | 40 |
| Sensitivity | (Linear range) (mV/ppm isobutylene) | >25 |
| Stabilization Time | (minutes at 20 ppb) | 5 |
| Warm-up Time | (seconds) | 5 |
| Zero Voltage | （mV） | 46~60 |
| Response Time | (seconds) diffusion mode | <3 |
4. PID Photoionization Gas Sensor/TVOC Detection Sensor PID-AH Electrical Characteristics
| Power Consumption | 85mW (typical) at 3.2V supply, 300mW at 200mA transient startup |
| Supply | 3.2-3.6V (onboard regulator disabled); 3.6-10V (onboard regulator enabled) |
| Output Signal | Bias voltage (min 46mV) ~ max |
| Vmax = Vsupply - 0.15V when regulator enabled, or 3.15V when onboard regulator not enabled |
5. PID Photoionization Gas Sensor/TVOC Detection Sensor PID-AH Operating Environment
| Temperature Range | -40°C ~ +55°C (intrinsically safe); -40°C ~ +65°C (non-intrinsically safe) |
| Temperature Dependence | 90%~100% of value at 20°C for 0°C~40°C; 140% of value at 20°C for -20°C |
| Humidity Range | Non-condensing 0~95% |
| Humidity Sensitivity | Transient operation near zero point at 0~75% RH |
6. PID Photoionization Gas Sensor/TVOC Detection Sensor PID-AH Key Parameters
| Expected Life | 5 years (excluding bulb and electrode cap) |
| IS Certification | IECEx Ex ia IIC T4; ATEX Ex ia II 1G -40°C < Ta < +55°C (< 10VDC power supply) |
| Onboard Filter | Filters dust and liquids |
| Bulb Replacement | User replaceable |
