Elesa s HCL column level indicators are the sort of thing one would use in lengths from 300mm to 2,000mm for oil tanks or other bulk liquid containers. As such, mechanical protection of the sight tube is an important feature - which is provided in the HCL by means of a U shaped aluminium channel running around three sides of the tube and also carrying the easy to read graduated contract scale.
The HCL series construction enables this U channel to be rotated 90° in installation, so enabling reading from the side. In addition, a variety of tube/end/O ring materials are available to suit unusual liquid specifications. HCL variants are also possible with float, minimum level signal, remote alarm, remote read using normally closed (NC), normally open (NA) or change over contacts. Further information on Elesa (UK) Ltd products may be found at www.elesa.co.uk