Dover OPW SiteSentinel Integra 100 - Discriminating STP Sump Sensor; Discriminating STP Sump Sensor Installation

Doc. #: M1800, Rev. 06
Page 61 of 101
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Discriminating STP Sump Sensor
OPW P/N: 30-0232-DH-20
Discriminating STP Sump Sensor
The Discriminating STP Sump Sensor detects abnormally high or low
liquid levels and distinguishes liquid type (water or hydrocarbons)
using a polymer strip and float technology. The polymer strip will
change resistance showing hydrocarbon detection; if the polymer
doesn’t change resistance it indicates detection of water. Detection of
either will result in an alarm condition, as will a break in the cable or
sensor malfunction.
Discriminating STP Sump Sensor Installation
1. Check that the dispenser pan is dry.
2. Install the bracket with pipe clamp and sensor bracket.
3. Position the sensor to touch bottom of pan.
4. Connect the sensor cable to the sensor and field wiring.
5. Seal the electrical connections with the epoxy seal pack.
6. Remove the sensor from the sump while servicing the
pump to prevent activating the sensor with fuel.
Discriminating STP Sump Sensor Specifications
Primary Use(s):
STP Sumps
Alternate Use(s):
Dispenser Pans/Sumps
Detects:
Low Liquid, High Liquid, Fuel
Operating Temperature:
-40°F to 158°F (-40°C to +70°C)
Sensor Dimensions:
Length: 21.1” (53.6 cm), Diameter: 2.3”
(5.8 cm)
Float Requirements:
Low: 1.5” (3.8 cm), High: 11” (27.9 cm)
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
*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.
Belcor
®
Inside
Sensor