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Issue Date: November 22, 1995
Revision Date: August 23, 1999
Tidel
Engineering, Inc.
EMS-3500
Liquid Discriminatory Probes Part 301-0635, Containment Sump Probes Part
301-0642,
Tidel
Detector #301-0752-001
INTERSTITIAL DETECTOR (LIQUID-PHASE)
Detector:
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Output
type:
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qualitative
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Sampling
frequency:
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continuous
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Operating
principle:
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electrical conductivity/hydrocarbon sensitive
polymer (Liquid Discriminatory
Probes Part 301-0635), magnetic switch/float and hydrocarbon sensitive polymer
(Containment Sump Probes Part 301-0642), float switch (Tidel Detector
#301-0752-001)
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Test
Results:
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unleaded
gasoline
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water
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Liquid
Discriminatory Probes Part 301-0635
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Response
time (min)
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3.59
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0.96
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Recovery
time (min)
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13.18
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<1
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Product
activation height (cm)
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1.76
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0.49
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Lower
detection limit (cm)
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4.19
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1.52
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high*
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low*
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Containment
Sump Probes Part 301-0642
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Response
time (min)
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6.39
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4.12
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4.76
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Recovery
time (min)
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>60
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<1
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<1
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Product
activation height (cm)
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2.27
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19.22
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4.31
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Lower
detection limit (cm)
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2.32
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N/A**
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4.31
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50%
by weight
ethylene glycol in
water
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30%
by weight
calcium chloride in
water
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Tidel Detector #301-0752-001
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high
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low
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high
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low
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Response
time (min)
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21.91
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30.10
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22.27
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31.08
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Recovery
time (min)
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<1
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<1
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<1
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<1
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Product
activation height (cm)
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28.92
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2.75
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28.82
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2.48
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*The
"high" and "low" refer to high and low level alarm points of
hydrostatic sensors.
**See
Glossary
Specificity
Results (in addition to above for Liquid Discriminatory Probes Part 301-0635 and
Containment Sump Probes Part 301-0642):
Activated:
synthetic gasoline,
diesel, heating oil #2.
Comments:
Liquid Discriminatory Probes Part 301-0635 and Tidel Detector #301-0752-001 are
reusable.
Containment Sump Probes Part 301-0642 was tested to determine its capability of
detecting hydrocarbons floating on water. A
Lower detection limit thickness of 0.04 cm was declared, on average, in 16
minutes, 41 seconds with recovery time averaging 12 minutes, 55 seconds.
Tidel Detector #301-0752-001 is intended to monitor the level of either ethylene
glycol or calcium chloride solutions in interstitial or annular space of a
double-walled tank. Detector
activates an alarm if any significant gain or loss of solution occurs.
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Tidel Engineering, Inc.
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Evaluator:
Carnegie Mellon Research Institute
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2025 West Beltline Road, #114 |
Tel:
(412) 268-3495
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Carrollton,
TX 75006
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Dates of Evaluation: 01/29/93,
02/17/93, 04/20/93
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Tel:
(800) 678-7577
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