UST Programs - LG 113

Issue Date: November 22, 1995
Revision Date: August 23, 1999

Tidel Engineering, Inc.

EMS-3500 with Monitoring Well Probe Part 301-0641, Sheen Probes Part 301-0687,
Tidel Detector #301-0762

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

Detector:

Output type:	qualitative
Sampling frequency:	continuous
Operating principle:	conductivity via resistor ladder network (Monitoring Well Probe Part 301-0641), electrical conductivity/hydrocarbon sensitive polymer (Sheen Probes Part 301-0687 and Tidel Detector #301-0762).

Test Results:

	unleaded gasoline	synthetic gasoline
Monitoring Well Probe Part 301-0641
Detection time (min:sec)	0:04	0:07
Fall time (min)	<1	<1
Lower detection limit (cm)	0.32	0.32
Sheen Probes Part 301-0687
Detection time (min:sec)	7:45	3:35
Fall time (min:sec)	18:01	16:57
Lower detection limit (cm)	0.02	0.04
Tidel Detector #301-0762
Detection time (min:sec)	9:31	7:05
Fall time (min:sec)	55:42	17:04
Lower detection limit (cm)	0.04	0.08

Specificity Results (in addition to above):
Activated: n-hexane, diesel, jet-A fuel, JP-4 jet fuel (except Sheen Probes Part 301-0687), toluene, xylene(s).

Comments:
Sensors are reusable.

Tidel Engineering, Inc.	Evaluator: Carnegie Mellon Research Institute
2310 McDaniel Dr.	Tel: (412) 268-3495
Carrollton, TX 75006	Dates of Evaluation: 02/02/93, 01/31/93 , 03/18/93
Tel: (800) 678-7577

Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the performance of the method or equipment.
Equipment should be installed and operated in accordance with all applicable laws and regulations.
For full details, please refer to our expanded "DISCLAIMER" page.