OPW M2010-EU, Руководство по установке

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9.6 Hydrocarbon Liquid Sensor with Water Indicator
Smart Sensor Equipped with Intellisense™ Technology
30-0234-HW-06, -15, -20
Description
The primary function of the Hydrocarbon Liquid Sensor with Water Indicator is to monitor wet wells with
groundwater tables that can change levels. This sensor uses a carbon/polymer material that changes its
resistance when it is touched by liquid hydrocarbons. The device also has a water sensor that has
conductive material to sense water. This lets the device tell the difference between hydrocarbon liquid and
water.
The sensor can tell the system if there is no ground water in a monitoring well or if there is water in a
containment area. It can also tell the system if there are fuel leaks in a containment area. If there is a break in
the cable it will cause an alarm condition in the system.
Specifications
Primary Use: Monitoring Wells
Detects: Liquid Hydrocarbons and Water
Operating Temperature: -40°C to +70°C (-40°F to 158°F)
Dimensions:
Length: 6’ (1.9 m), 15’ (4.6 m) or 20’ (6.1 m)
Diameter: 0.7” (1.8 cm)
Nominal resistance (uncontaminated) Less than 3,000 ohms per foot
Nominal resistance (contaminated) More than 30,000 ohms
Cable: Belden #88760 or Alpha #55371
Maximum Wiring Length*: 1,000’ (305 m) field wiring
Multi-Drop Restriction
See Mixed Multi-Drop Installation
Connections: Red = Power, Black = Signal, Shield = Ground
Doc. No.: M2010-EU Rev.: 13
Page 73 of 149