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Hamilton,Ohio45011

Revision1.2ROMIII“‐L”&“‐LIQ”Installation&OperationManualPageNo.4of15

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1. Product Description

We’ve put together this manual to help you understand how to operate and install ROM III, a

Retain Overfill Monitor system that is tank/trailer mounted. In compiling this manual, we

sought the advice of people we consider to be authorities on safe operation: those with

actual field experience. We hope that their knowledge, coupled with our technical

information, will allow you to install your system both safely and effectively. If you do run in to

any questions or concerns, our technical support team will be glad to assist you.

The ROM III is a tank truck / trailer mounted On Board Monitoring (OBM) system with sensor

mounted in the top and bottom of each tank compartment. The ROM III monitor detects and

communicates a pending overfill condition to a loading rack control monitor, and signals

which tank compartment is overfilled. The ROM III monitor also detects and communicates a

retain condition to a loading rack control monitor. This control system will enable a tank

truck / trailer to load at API optic, thermistor or float petroleum loading rack monitors while

using only two wire optic sensors. If all of the optic sensors do not detect any liquids, the

monitor provides the necessary signal information to the appropriate API sockets to enable

loading of the tank trailer truck. The ROM III Onboard Monitor has been designed for use with

any CIVACON 2-Wire Overfill and Retain Sensors.

The ROM III on board monitor includes some additional new features and benefits when

compared to its predecessor the ROM II. These include:

A. Support for tanks with up to 8 compartments using 2-wire overfill and retain

sensors.

B. 2 relay contacts one I.S. and one NON I.S.

C. Aux Out is now tied to the top sensors only. For use with optional Indicator light.

D. Low power indication

MODELS of ROM III Include:

#3308-L – ROM III, with Left-to Right Reading LEDs

#3308R-L – ROM III, for Retained Reset Switch,

with Left-to-Right Reading LEDs

#3308-LIQ – Liquip Branded ROM III, with Left-to-Right Reading LEDs

#3308R-LIQ – Liquip Branded ROM III, for Retained Reset Switch,

with Left-to-Right Reading LEDs

Dover Civacon ROM III User Manual

Questions and Answers: