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UST Program - LG 113

Issue Date: January 11, 2001
Revision Date: December 21, 2005

PID Analyzers, LLC
(originally listed as HNU Systems, Inc.)

PI-101 with 11.7 EV Probe #101397, HW-101 with 11.7 EV Probe #170214, ISPI-101 with 10.2 EV Probe #111100, DL-101 with 10.2 EV Probe #167085

OUT-OF-TANK PRODUCT DETECTOR (VAPOR-PHASE)

Detector:

Output type:	quantitative
Sampling frequency:	intermittent
Operating principle:	photoionization detector

Test Results:

*California regulations require vadose zone vapor monitoring to be continuous. This sensor does not meet the criteria.

	unleaded gasoline	synthetic gasoline	JP-4 jet fuel
PI-101
Accuracy^* (%) - average reading	29.1 (730 ppm)	12.3 (884 ppm)	29.6 (737 ppm)
Detection time^* (sec)	31	21	26
Fall time^* (sec)	52	14	49
Lower detection limit (ppm)	14.2	11.7	29.7
HW-101
Accuracy^* (%) - average reading	12.6 (888 ppm)	8.5 (1076 ppm)	5.7 (953 ppm)
Detection time^* (sec)	20	25	24
Fall time^* (sec)	49	10	49
Lower detection limit (ppm)	31.8	21.1	26.8
ISPI-101
Accuracy^* (%) - average reading	63.6 (360 ppm)	59.1 (415 ppm)	70.8 (300 ppm)
Detection time^* (sec)	20	21	35
Fall time^* (sec)	40	10	37
Lower detection limit (ppm)	2.3	5.8	5.1
DL-101
Accuracy^* (%)	63.3	56.2	59.5
Detection time^* (sec)	45	22	51
Fall time^* (min:sec)	01:03	00:14	01:01
Lower detection limit (ppm)	11.0	5.8	5.0

*For tests conducted with 1000 ppm of test gas

Specificity Results (in addition to above):
Activated: n-hexane, toluene, xylene(s)

PID Analyzers, LLC	Evaluator: Carnegie Mellon Research Institute
25 Walpole Park South Drive	Tel: (412) 268-3495
Walpole, MA 02081	Dates of Evaluation: 02/5/92, 02/5/92, 03/5/92,
Tel: (508) 660-5001	11/28/91

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