Sensors Communication
882xE,885xE and 887xE are able to communicate with the latest generation OPW overfill sensors (Civastar) as well
as the 3205E Onboard Monitor, 1399TT Truck-tester and Civacommand. The 885xE and 887xE Rack Monitor will
communicate via the existing wiring. Initiation of the sensors is done during power-up of the sensors. Initiating a 12
compartment truck with 5-wire sensors can take up to 30 Sec. since all sensors are connected in series (8 Sec. for
a 6 compartment truck with 5-wire sensors). It will take a few Sec. for the 882xE and 887xE to read 8 x 2-wire
sensors.
The ability to read the sensors opens new possibilities to ensure the most reliable pending overfill detection. E.g.
serial numbers of the sensors are available for Tank-truck identification or a reminder to clean the sensor before the
next loading, cycle or wet test the sensor before the next load. New sensors software releases will have more
available data, please contact OPW for details.
System Operation
The purpose of the OPW Civacon 88XX Rack Monitor liquid level sensing system is to detect a liquid point level
signal from a sensor mounted in compartments of a tank truck, or storage tank. The system provides an automatic
signal to the rack automation equipment to shut-off the flow of liquid and warn of an impending overflow condition of
a tank truck or storage tank. It can detect up to 8 Two-Wire Sensors or 12 Five-Wire Sensors.
As soon as the power is supplied, the monitor will perform an extensive self-test of its internal functions (see power
up test). If one of the test fails (except Led Test) a message will be shown on the OLED Display (88XX only). Also a
red Led indicator will blink. (see troubleshooting chapter for details).
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