Equipment and materials

A solid‐state halogen leak detector capable of scanning an assembly line and detecting refrigerant leaks has been introduced by General Electric. Co of the USA and is now available for use in the UK from Dean & Wood (London) Ltd. Called the Ferret (T), it has all solid state modular construction, a pencil‐shaped probe, designed to withstand severe shock; and a sensor that eliminates the need for maintenance and adjustments. Leaks as small as 10 by 10−8cu cm/sec can be pinpointed on any closed system containing a halogen‐compound gas, or in any vessel or system where such a gas may be introduced as a tracer. It features an air‐filtering system to reduce contaminated particles and improve the accuracy of leak testing; a background elimination system that helps cleanse the sample and extend sensor life; a built‐in airflow gauge permitting the operator to make quick visual checks of proper airflow; a direct‐operating pump driven by a synchronous motor which is unaffected by voltage fluctuations, and a cover to safeguard controls not essential to routine operation but which are easily accessible to qualified personnel.