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
Monitoring Well Probe Part 301-0641
| Unleaded Gasoline | Water | |
|---|---|---|
| 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
| Unleaded Gasoline | Water | |
|---|---|---|
| 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
| Unleaded Gasoline | Water | |
|---|---|---|
| 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.
2310 McDaniel Dr.
Carrollton, TX 75006
Tel: (800) 678-7577 - Evaluator: Carnegie Mellon Research Institute
Tel: (412) 268-3495
Date of Evaluation: 02/02/93, 01/31/93 , 03/18/93
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