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

Tidel Engineering, Inc.

MS-3000 301-0328-001, 301-0330-001 and EMS-3500 Vapor Sensor Probe Part #301-0634

Out-Of-Tank Product Detector (Vapor-Phase)

Detector

Output Type	Qualitative
Sampling Frequency	Continuous
Operating Principle	Adsistor

Test Results

EMS-3000
301-0328-001, 301-0330-001

	Unleaded Gasoline	Synthetic Gasoline	JP-4 Jet Fuel
Detection time (min:sec)	1:31	1:05	1:26
Fall time (min:sec)	5:39	4:23	9:38
Lower detection limit (ppm)	10-100	10-500	10-50

EMS-3500
Vapor Sensor Probe Part #301-0634

	Unleaded Gasoline	Synthetic Gasoline	JP-4 Jet Fuel
Detection time (min:sec)	2:46	1:41	1:50
Fall time (hr)*	>1	>1	>1
Lower detection limit (ppm)	100	500	100

* The vapor sensor probe was recalibrated when it did not recover, after 1 hour, from exposure to test vapors.

Specificity Results (in addition to above for EMS-3000 301-0328-001, 301-0330-001)

Activated: toluene, xylene(s)
Not Activated: n-hexane.

Specificity Results (in addition to above for EMS-3500 Vapor Sensor Probe Part No. 301-0634)

Activated: n-hexane, toluene, xylene(s).

Manufacturer's specifications

EMS-3500 Vapor Sensor Probe Part No. 301-0634 is for use in normally dry monitoring wells to detect hydrocarbon vapors. It can be used in monitoring wells up to 20 feet deep. The probe will alarm if it comes in contact with water and must be removed immediately to prevent damage to probe.

Comments

EMS-3000 lower detection limit has been statistically determined to be within the range specified above.

Tidel Engineering, Inc.
2310 McDaniel Dr.
Carrollton, TX 75006
Tel: (800) 678-7577
Evaluator: Radian Corp.
Tel: (512) 454-4797
Date of Evaluation: 07/08/91 , 03/18/93