Casella España, S.A. - Gas detectors

The detectors OLC20 of the mark Oldham, commercialised by Casella Spain, are conceived to cover the needs of hygiene posed by the users of these systems of detection, applying the knowledges purchased during a lot of years devoted to the manufacture of gas detectors, and with a really adjusted cost, so that it guarantee the hygiene without need to realise a big economic investment.

The principle of detection of the sensor that incorporates the detector OLC20 is based in the catalytic oxidation by means of the utilisation of pellistores forming a bridge of wheatstone, lodged in an envolvente antideflagrante. The filaments detectors when seeing exposed to gas produce a descompensación in the bridge of wheatstone what translates in a variation of the proportional voltage to the concentration of gas, which transmits in shape of signal to the unit of control that manages to the detector. The utilisation of a filament compensator warns the effects produced by the variations of humidity and temperature.

It applies in continuous protection of workers and installations, laboratories of investigation, rooms of boilers, industrial hygiene, chemical laboratories and chemists, petrochemical and purification of water.

The detector OLC20 fulfils with the requirements of the Directive 94/9/CE (ATEX) for his

location in classified zone and are built using material of high quality that confer a big robustness to the detector and a high index of protection of the envolvente IP 66. It can supply in his version OLC20D, that has a terminación in shape of presses estopa that incorporates 15 metres of wire for his direct connection to the head office of detection. The fixation of the detector realises by means of a square of subjection.