Witt’s automatic back-purging filter to simplify gas analysis

Back purging filter rearThe back-purging filter automatically discharges dirt with an easy disposal by its handily collection bag. (Image source: Witt)Witt’s new back-purging filter serves as an analysis gas inlet filter on in-line gas analysers, and with its suction pipe, the device is intended to prevent the clogging of the filters effectively, and if desired, fully automatically

Milk, powder, coffee or flour-dust often pose a challenge to the in-line gas analysers by blocking the filters as they get sucked in. The new back-purging filter has pressure transmitters installed, which determine the degree of clogging from the pressure drop.

The device gives a signal when the limit value is reached, and then the purging process is activated at the push of a button. The filter element is cleaned by repeated pressure surges to the analysis gas. As a result, the dissolved contaminants are collected in a collecting bag.

Established in 1945 in Witten, Germany, WITT-Gasetechnik is a leading manufacturer of gas-related equipment. Witt’s products include gas mixers, gas analysers and metering systems, as well as package leak detection systems.

Martin Bender, gas technology specialist in Witt, said that fine-grained foods make the validation of the protective gas atmosphere more difficult, as tiny particles clog the filters on the gas analysers.

In this regards, Witt’s new back-purging filter effectively adds value to completely cleanse the choked particles. The back-purging filter flushing can be run both automatically as well as manually.

According to Bender, the device’s stainless steel housing measures 172 x 242 x 343 mm, and it uses a 230V power supply, with the pressure control switches and pressure gauges locating on the front panel. This ensures a smooth process of cleansing, prevents high-maintenance cost and is easy to operate.

Alain Charles Publishing, University House, 11-13 Lower Grosvenor Place, London, SW1W 0EX, UK
T: +44 20 7834 7676, F: +44 20 7973 0076, W: www.alaincharles.com

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