Link Instruments will be presenting and demonstrating their ULLC IS liquid level indicator for fire extinguishers at HazardEx 2021. The intrinsically safe ultrasonic device enables the levels in banks of extinguishers in hazardous areas to be easily checked without interrupting normal operation. Avoiding the need for shutdowns leads to substantial time and cost savings.

ATEX certified to II 2G Ex ib IIC T4 Gb, the unit uses ultrasound to locate the boundary between the liquified and gaseous gas. In operation, the transducer is placed against the cylinder body slightly below the expected fill level and gradually raised until the reading jumps sharply. This happens due to the greatly enhanced propagation of ultrasonic surface acoustic waves when the transducer reaches the liquid / gas interface.

The ULLC IS is suitable for fire extinguisher cylinders using liquid CO2, Halon, FM200, NOVEC etc, and is supplied with a transducer and an extension pole for accessing bulk system installations on ships etc. It is particularly useful in industries such as oil, gas and marine - especially LPG carriers.

“The ULLC IS is the only intrinsically safe, ATEX approved model in the world for checking fire extinguisher fill levels,” says Link Instruments’ Dominique Christie.

Designed and manufactured in the UK by Link Instruments, it comes with a five year warranty on the instrument and a one year warranty on the transducer.

Hampshire based Link Instruments manufactures and supplies precision measuring equipment for the fire safety, marine, oil, gas and other industries worldwide. Established in 1996, it also offers comprehensive repair, recalibration and spares services, including for products from other suppliers.

Link Instruments Ltd, The Courtyard, Steepmarsh, Petersfield, Hampshire, GU32 2BJ, UK
Tel: +44 (0)1730 897 100, Fax: +44 (0)1730 897 103
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