Preparing for Probe and Sensor Installation
1.10 Probe and Sensor Wiring
5.1.1 Compliance
Installation of this equipment must be in accordance with all Local, State and Federal regulations pertaining to
this type of equipment including, but not limited to, the National Electrical Code, NFPA No. 70 and he
Automotive and Marine Service Station Code, NFPA No. 30A.
5.1.2 Wire Type
All wiring should have a capacitance rating of less than 100 picofarads per foot.
5.1.3 Probe Wiring
Gas and oil resistant shielded, 2-conductor cable is required to extend the probe cable to the I.S. Interface
Module in the Controller. OPW Fuel Management Systems recommends you use Belden #88760 or Alpha
#55371 cable.
NOTE: Belden #88760 is available directly from OPW Fuel Management Systems; part #12-1300.
5.1.4 Sensor Wiring
You can use the same cable as used for the probe or you can use individual Gas and Oil resistant cable,
providing it is 18 AWG or greater.
5.1.5 Wire Length
Wire runs must be less than 300 m (1000 ft) to meet intrinsic safety standards. Also, wire lengths of 300 m
(1,000 ft) or more between probe/sensor and the Controller will jeopardize signal integrity and system
operations.
5.1.6 Wire Splices
There should be no splices between the field junction box and the I.S. Interface Module in the SiteSentinel
iTouch Controller. A splice in the hazardous area requires the use of a silicon-filled wire nut that must be
located in a waterproof junction box. Each splice would jeopardize signal integrity and system operations.
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