HYDROGEN-BASED LEAK DETECTORS
July 1st 2005

Hydrogen-based leak detectors from Sensistor Technologies are playing a key role in the production testing of refrigeration units at Kenmore International’s County Durham site.

Wire-on-tube evaporators are produced under tightly controlled conditions. Joints are often needed to achieve some of the convoluted shapes required and involve steel-to-steel or steel-to-copper welds. Such joints are a potential source of leaks, so some form of leak detection is necessary.

The solution is provided by Sensistor H2000 leak testers that have built-in digital electronics to simplify the logging and display of results. Units are mounted on a control station in conjunction with simple controllers that let operators log on and specify the unit being tested.

The operator has only to pass the sniffer probe over joints. Everything else A contract to supply 12 chemical dosing skids for a new filtration plant at Mekorot Water Company in Israel has been won by PCM Pumps.

The skids will house Milton Roy pumps and ancillary equipment.

Assembled and factory tested at PCM’s works, they will deliver a number of chemicals to dosing points ENTER 394 Tel: 01295 730746 ENTER 397 Tel: 01442 876833 ENTER 396 Tel: 01536 740200 proceeds automatically.

Hydrogen has proved an ideal tracer gas for Kenmore. Light and with higher molecular speed and lower viscosity than other gases, it can be introduced easily into the system to be tested, mixes quickly with air and other gases and is easily evacuated.

Sensistor also points out that it has the highest leakage rate of any gas.