Dover OPW SiteSentinel Integra 100, Installation Manual

Page: 65 / 101

Doc. # : M1800, Rev. 06
Page 65 of 101
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Hydrocarbon Liquid Sensor with Water
Indicator
OPW P/Ns: 6 feet: 30-0234-HW-06; 15 feet: 30-0234-HW-15;
20 feet: 30-0234-HW-20
Hydrocarbon Liquid Sensor Installation
The Hydrocarbon Liquid/Water, which is available in lengths of 6 feet
(1.8 m), 15 feet (4.6 m) and 20 feet (6.1 m), is used primarily for
monitoring wet wells with fluctuating groundwater tables. The sensor
contains a carbon/polymer material that changes its resistance when
exposed to liquid hydrocarbons. Additionally, a water sensor that
relies on the conductivity of water to detect its presence is utilized,
providing the ability to discriminate between hydrocarbon liquid and
water. An alarm condition will result from the absence of groundwater
in a monitoring well. Detection of fuel entering the containment area
(indicating a leak) will also result in an alarm condition, as will a break
in the cable or sensor malfunction.
*NOTE : Maximum Wiring Length is the maximum length of cable to
be used to connect all sensors on an individual channel. This length
includes run of cable from I.S. Barrier to each sensor board in the
string.
Hydrocarbon Liquid/Water Sensor Specifications
Primary Use(s): Monitoring wells
Detects: Liquid hydrocarbons and water
Operating Temperature: -40°F to 158°F (-40°C to +70°C)
Dimensions:
Length: 6’ (1.9 m), 15’ (4.6 m) or 20’ (6.1 m)
Diameter: 0.7” (1.8 cm)
Nominal Resistance:
Uncontaminated: 1,000
– 3,000 ohms/ft
Contaminated: 30,000 - 200,000 ohms/ft
Cable Requirements: Belden #88760 or Alpha #55371
Maximum Wiring Length*:
1,000’ (305 m) field wiring
Multi-Drop Restriction: 16 per I.S. barrier channel (64 per barrier)
Connections:
Red = Power, Black = Signal, Shield =
Ground