Dover OPW SiteSentinel Integra 100, Installation Manual

Page: 63 / 101

Doc. # : M1800, Rev. 06
Page 63 of 101
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Discriminating Interstitial Sensor
OPW P/N: 30-0236-LW
Discriminating Interstitial Sensor
The Discriminating Interstitial Sensor utilizes a solid-state optical
technology to detect the presence of fluid in the annular space of a
tank, and conductive probes to distinguish fluid type (water or
hydrocarbons). Detection of liquid will result in an alarm condition, as
will a break in the cable or sensor malfunction.
Discriminating Interstitial Sensor Installation
1. Measure the length of the annular space-monitoring
pipe from top to bottom and subtract ½-inches (1.3
cm) for a total measurement to be used for sensor
placement.
2. Measure from the sensor tip along the sensor cable
the length calculated and mark with tape or marker.
3. Position the sensor into the monitoring pipe until the
tape mark is even with the top of the pipe.
4. The sensor should not touch the bottom of the
monitoring tube to prevent false alarms.
5. Connect the sensor wires to the field wires in the
junction box using the supplied wire nuts.
6. Seal the electrical connections with the epoxy seal
pack.
Discriminating Interstitial Sensor Specifications
Primary Use(s): Interstitial Space
Alternate Use(s): Dispenser Pans and STP Sumps
Detects: Liquids (Fuel and Water)
Operating Temperature: -40°F to 158°F (-40°C to +70°C)
Dimensions:
Length: 3.22” (8.2 cm)
Width: 1.1” x .62” (2.8 cm x 1.6 cm)
Required Cable: 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.