Dover OPW SiteSentinel Integra 100, Installation Manual

Page: 50 / 101

Doc. # : M1800, Rev. 06
Page 50 of 101
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11 Model 327 Volumetric Line Leak
Detector (VLLD) Sensor (only for
Integra 500)
OPW P/N: 30-3251
Figure 11-1 Model 327 VLLD Sensor
Designed to detect a leak in pressurized product piping by monitoring
flow when the submersible pump is running and no one is dispensing
fuel. The sensor utilizes an internal flow meter to detect and measure
flow and provides an alarm condition if a leak is detected. An alarm
condition will also occur if the cable is broken. The use of this sensor
requires the addition of an external Line Interface Module (LIM) for up
to four (4) STPs.
NOTE : VLLD sensors may be multi-dropped (maximum three (3)
VLLD sensors). Cannot be multi-dropped with OPW probes/sensors
on same I.S. channel.
11.1 VLLD Specifications
*Maximum Wiring Length is the maximum length of cable to be used
to connect all sensors on an individual channel. The length includes
run of cable from I.S. Barrier to each sensor board in the string.
11.2 Prior to Installation
Lock-out and tag-out the STP breaker and confirm all circuits are de-
energized.
Completely barricade your work area.
Adhere to OSHA Confined-Space Entry (CSE) protocol.
Depressurize the product line.
Keep plenty of fuel-absorbent material in the sump surrounding area.
Primary Use: Pressurized Product Lines
Location: Submersible Pump Leak Detector Port
Alternate Location: Sensor Adaptor Fitting
Detects: Product Flow
Operating Temperature: -40°F to 158°F (-40°C to +70°C)
Connections:
Blue = Power, Brown = Signal, Black and Shield
= Ground
Multi-Drop Restriction: 3 per 12 V I.S. Barrier channel (12 per barrier)
Maximum Total-Run
Wiring Length*:
1,000’ when using Belden 88760
500’ when using Belden 88761 (22-AWG)