MiniPID Photoionisation Detection Sensor

General Details

The Ion Science MiniPID is a simple plug-and-play sensor able to deliver dynamic and dependable response to thousands of volatile organic
compounds (VOCs) in many diverse applications.

All MiniPID sensors include patented Fence Electrode Technology for
industry leading humidity resistant performance and Anti-contamination design protecting the sensor from moisture, dust and aerosols.

The sensor is designed for both diffusive and in-line pumped sampling,
delivering an exceptional response time and clear down.

MiniPID incorporates lamps of exceptional brightness and stability
enabling detection of less volatile and less readily sensed compounds
reliably, over an extended period of time.

PPM MiniPID: range 0.1 – 6000 ppm
The PPM variant is used for wide range, part per million (ppm)
measurements between 0.1 and 6000 ppm (isobutylene equivalent). This sensor is configured specifically for dynamic response to VOCs at elevated concentrations allowing for greater accuracy and repeatability.

PPB MiniPID: range 1 ppb – 40 ppm
The PPB variant is used for high sensitivity in the part per billion (ppb) range with minimum detection limit of 1 ppb. The PPB sensor is optimised to deliver an exceptionally low background current allowing for optimum
low-end sensitivity.

10 eV MiniPID: range 5 ppb – 100 ppm
The 10 eV is new to our 3-pin product range and is used for enhanced
selectivity of compounds with lower ionisation potentials.  A common usage of the 10 eV sensor is for the determination of ambient levels of
aromatic compounds.

11.7 eV MiniPID: range 0.1 to 100 ppm (isobutylene equivalent)
Available from Ion Science is the 11.7 eV lamp which extends the range of detectable compounds to include chloro-carbons, CFCs, formaldehyde and chlorine amongst others.

  • Humidity-resistance
  • Anti-contamination design
  • Exceptionally linear wide range ‘PPM’ model
  • Low drift high sensitivity ‘PPB’ mode
  • 10 eV, 10.6 eV and 11.7 eV lamps available
  • Removable, pneumatically sealed sensing pellet
  • Series 4/A1 format
  • 12 month warranty (not including stacks)
  • Expected life > 5 years
  • Manufactured in the UK


  • US: 7,046,012
  • EU: 1474681


Pellet colour White Blue White + gold spot
Minimum detection limit 1 ppb 0.1 ppm 5 ppb
Range 40 ppm 6000 ppm 100 ppm
Linearity >98% over measurement range >98% up to 100 ppm 88% at 1000 ppm 75% at 4000 ppm >98% over measurement range
T90 response time 3 s
Typical responsivity 25 mV/ppm 0.7 mV/ppm 10 mV/ppm
Offset voltage 60 – 80 mV 52 – 55 mV 52 – 57 mV
Output voltage Offset voltage to rail voltage – 0.1 V
Power consumption 110 mW at 3.3V (150 ms 300 mV transient upon switch on)
Humidity range 0 – 99% RH, non-condensing
Humidity sensitivity Humidity resistant
Expected life 5 years (excluding replaceable lamp and pellet)
Warranty period 12 months

MiniPID is widely used across a number of industries and applications, including:

  • Personnel safety
  • Industrial hygiene
  • Site soil and air sampling
  • Fugitive emissions and volatile spills
  • Law enforcement
  • Emergency response