PID+ Gas Sensor Whitepaper

PID+ is a minaturised chemical sensor that builds upon and extends the capability of Photo Ionization Detectors (PID) commonly used in industrial, military and homeland security applications.

How does it work?

Gas is ionized and passed through a micromachined ion filter. Low voltages applied to the filter cause ions to drift towards the sidewalls at a velocity that is dependent on the ion mobility. Ions in a particular mobility range will pass through the filter to a detector electrode. The selective ion transmission provides additional information on ion species, which improves chemical ID capability. You can downloand the technology whitepaper for more details on PID+ works.

What makes it different?

Conventional PID sensors only provide indicative information on gas concentration, with the selectivity entirely determined by the photon energy of the bulb. PID+ provides additional information on 1) gas concentration 2) ion mobility for improved selectivity and 3) an alarm confidence measurement.

How is it better?

High sensitivity with enhanced selectivity, compared to conventional PIDs, provides the user with additional information, which helps them make faster and better decisions. PID+ is small, lightweight and consumes a fraction of the power of larger detection technologies such as time-of-flight IMS.

Where can it be used?

PID+ is ideally suited to chemical detection applications that demand superior detection capability compared with PID without the cost, size and complexity associated with larger detection platforms. It can also be used as a GC detector, provding more information compared to standard PIDs.