Water level alarm
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An improved version of the Radolarm water-level alarm system, designed to prevent engine seizures through loss of cooling water has been announced by Marston Radiators, a subsidiary company of Imperial Metal Industries Ltd. The Mark II version of the Radolarm operates on 12V or 24V and has built-in protection circuits to prevent failure due to excessive electrical surges or to misconnection of terminals on the terminal block. A warning of a loss in engine cooling water is given visually and audibly.
It operates before any appreciable rise in the temperature of the water and thus acts as an early warning device. Unlike a water temperature gauge, it provides an alarm system which the driver or operator is unlikely to ignore. The signal is continuous or intermittent.
An intermittent signal type is recommended for use in vehicles, the continuous signal W13e for stationary plant where it can be used to operate an engine shut-down system for automatic protection in the event of cooling water loss. It has been approved for use with public service and petroleum carrying vehicles where an electrically insulated chassis is used. There is no direct connection between the electrical supply lines and the vehicle chassis, isolation cir.6uits being fitted within the pack.
Made by: Marston Radiators Ltd, Sovereign House, Seacroft Town Centre, Leeds L514 6NX.