Model PI51 & PI52 - PID Detector

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  • The photoionization detector (PID) is used for the measurement of low (ppb) organic and inorganic species that can be ionized by the UV lamp (9.5, 10.6 & 11.7). Nearly 20,000 of these detectors have been sold worldwide since it was first released by HNU Systems in 1976. It has been used for the measurement of VOCís in water (EPA method 602, EPA Method 50--, EPA Method SW846Ö, numerous OSHA methods), quality controlÖ There are two Models that are described below:
  • The Model PI52 has a PID, a power supply for the lamp and bias and an electrometer. The electrometer output is 0-10 VDC. The customer needs a separate ADC channel to feed the signal into the GCís data system. Alternately, PID Analyzers sells a data system (Model 50) that will feed the signal into a separate PC.
  • The Model PI51 has a PID and a power supply for the lamp and bias. Here, the customer uses the electrometer (FID type with a positive bias) already in the Gas chromatograph. This should already have the ADC connection to the customer GC data system.
  • The PID is one of the most sensitive detectors available for VOCís. It has the widest dynamic range of any detector available (108) and does not require any support gases except the carrier.
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Specifications

Species measured: Detection limit: Range: Detector:
Organics (VOCs) and inorganic species
that can be ionized by the UV lamp (9.5, 10.6, 11.7)
<0.5 ppb of benzene > 5 x 107 2.5'' D x 5.5'' L
Electronics enclosure (PI52): Electronics enclosure (PI51): Power consumption: Dimensions:
Weight: 3 lbs.
Size: -'' W x -'' L x -'' H
Weight: 0.40 lbs
Size: 4'' W x 5'' D x 1.25''H
< 2 amps @ 115V 10'' L x 3'' W x 2.25'' D
Instrument operating conditions:
5-40 degrees C, 0-95% RH (non-condensing).

Features

Easy to install Selectivity Wide linear dynamic range  
  Improves separations and analysis of trace species. > 107 50-200 times more sensitive than the FID
High sensitivity Adaptability Non destructive Used by environmental agencies worldwide
pg or sub pg detection limits - most sensitive PID available Is readily adaptable to any chromatograph. Detectors can be run in-series.  
Display (PI52 only) ADC Programmable Voltage output
Our 2 line by 16 character display can be backlit; used for range and background readings. Our 16 bit ADC provides a resolution of 1 part in 64,000 and our signal algorithm minimizes noise by signal averaging in the msec range 0-10VDC (PI52 only)

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