in the design specified in the enclosed test documents were subjected to a performance test of their leak signaling function to gain type approval in accordance with the Water Resources Act (WHG) ?9h.
In the absence of generally recognized test guidelines for this type of instrument, particular attention was paid to the following requirements:
- Functionality in the 0°C to 70°C temperature range
- Functionality of the switching of the output relays for different kinds of hydrocarbons
- Suitability as leak detectors in accordance with selected points in the TRbF 501, version 05.89.
The test result showed that the instruments fulfil all the requirements considered necessary for them.
The instruments are therefore suitable for use with all fluids floating on water (?? ? 80) with a noticeably smaller dielectric coefficient than water. They were tested using the following hydrocarbons which have a relative dielectric coefficient of approximately ?? ? ?
