Product category:
Fire, smoke and gas leak detection
News Release from: Crowcon Detection Instruments | Subject: Xgard Type 4
Edited by the Processingtalk Editorial
Team on 05 December 2005
High temperature flammable gas detector
with ATEX
The ATEX certified Xgard Type 4 gas detector from Crowcon is designed to quickly detect flammable gases in high temperature applications, up to 150C, such as gas turbines, drying ovens or processes
The new, ATEX certified Xgard Type 4 gas detector from Crowcon is designed to quickly detect flammable gases in high temperature applications (up to 150oC) such as gas turbines, gas-fired drying ovens or printing and coating processes Gas turbines are usually operated with natural gas (or sometimes naphtha) at high flow volumes, so a gas leak could be extremely dangerous
This article was originally published on Processingtalk on 5 Sep 2003 at 8.00am (UK)
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According to the UK HSE*, at least one gas detector should always be installed if a gas turbine has a continuous gas supply.
This detector should be located in the ventilation outlet, as a leak will always reach it.
Additional detectors can also be installed at other points around the turbine to increase the probability of detecting small leaks.
The main detector in the ventilation outlet should be set to alarm at the lowest practical level - preferably below 5% of the lower explosion limit (LEL) but no higher than 10%.
Because of the extremely high temperatures generated by gas turbines, conventional sensors cannot be used.
The Xgard Type 4 is therefore ideal for this application.
Suitable for Zone 1 and Zone 2 hazardous areas, the detector's sensor contains poison-resistant catalytic beads which can detect hydrocarbons at high temperatures.
With a life of up to five years, the Xgard Type 4 sensor has a 316 stainless steel housing, with the choice of a marine grade aluminium or 316 stainless steel junction box for ultimate corrosion resistance in extreme environments.
The aluminium junction box is protected by a tough polyester coating.
Both types of junction box have lugs for both wall and ceiling mounting, removing the need for additional brackets, while a choice of four cable gland sizes allows quick and easy installation on any site. Request a free brochure from Crowcon Detection Instruments ...
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