Dover OPW SiteSentinel iTouch M1500 - Sensor Installation and Configuration; Interstitial Sensor Installation (30-3206)

Doc. No.: M1500, Rev. 6
Page 39 of 127
• 67733 Gross Point Road 900 Santa Fe Dr.
Sensors
1.19 Before You Begin
• See local and National Electrical Codes for your location.
• Ensure cabling (gas and oil resistant OPW Fuel Management Systems’ part number 12-1030) back to
the Controller is in conduit that is dedicated to intrinsically safe wiring.
1.20 30-3206 Interstitial Hydrocarbon Liquid/Water Sensor
About the 30-3206
Figure 11-1 Interstitial Hydrocarbon Liquid/Water Sensor
The interstitial hydrocarbon liquid/water sensor is designed for use in the interstitial area of a double-walled
tank.
The hydrocarbon liquid/water 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. In the event of a break in
the cable, the system will activate the alarm.
30-3206 Specifications
Operating Temperature
20°C to +50°C (-4°F to 122°F)
Dimensions
2.5 cm (1.0 in) x 35 cm (13.8 in)
Cable
6.1 m (20 ft) of gas & oil resistant cable
Nominal resistance (uncontaminated)
1K -3K ohms
Nominal resistance (contaminated)
10K – 200K ohms
NOTE: To ensure safe operating conditions the sensor has been designed to connect to OPW Fuel
Management Systems’ controllers only.