Dover OPW SiteSentinel iSite - Appendix I: SiteSentinel and EMCO Sensors without IntelliSense Board

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Appendix I: SiteSentinel
®
and EMCO Sensors
without IntelliSense™ Board
Hydrocarbon Liquid/Water Sensor
Part # 30-3210-nn
The hydrocarbon liquid/water sensor is used primarily in monitoring
wells with fluctuating groundwater tables, or in the containment areas
of tanks, pumps and pipes.
The sensor contains a carbon/polymer material that changes its
resistance when exposed to liquid hydrocarbons, as well as a water
sensor that relies on the conductivity of water to detect its presence,
providing the ability to discriminate between hydrocarbon liquid and
water.
The sensor also alerts the system to the absence of groundwater in a
monitoring well, or the presence of water in containment areas. It will
alert the system if any fuel enters into the containment area, which
would indicate a leak. In the event of a break in the cable, the system
will activate the alarm.
Hydrocarbon Liquid/Water Sensor
Hydrocarbon Liquid/Water Sensor
Typical Uses:
Monitoring Wells
Substances Detected:
Hydrocarbon and Water
Available Lengths:
6’–20’ (1.8–6.1 m)
Operating Temperature:
-4°F to 122°F (-20°C to 50°C)
Dimensions:
0.7” x 6’–20’ (1.8 cm x 1.8–6.1 m)
Required Cable:
10' (3.1 m) gas-and-oil resistant cable
Maximum Wiring Length*:
1,000' (305 m)
Nominal resistance
(uncontaminated):
1K–3K ohms per foot
Nominal resistance
(contaminated):
30K - 200K ohms
Multi-Drop Restrictions:
One (1) per channel
Connections:
Red = Power, Black = Signal
*Maximum Wiring Length is the maximum length of cable to be used
to connect all sensors on an individual channel. The length includes
the run of cable from the VSmart Module to each sensor board in
the string.