Gas Detectors for Mine Applications
U.K. based Trolex, which specializes in safety
monitoring equipment, notes that its
STX3241 and STX3261 toxic and flammable
gas detectors and TX5920 Vortex air
flow sensors have been used to monitor
CH4, CO and air flow at the Svea Nord mine
in Norway. The sensors have a high-strength
molded housing sealed against dust and
moisture to IP65 standard and EMC protection,
making the systems reliable in the
extreme, arduous conditions in the mine. All
the sensors have ATEX M1 approval. The
STX3261 is a robust, dust and waterproof
pre-calibrated gas detector which utilizes a
poison-resistant catalytic combustion sensor
to monitor flammable gases present in the
atmosphere such as methane and propane.
The large mass of the sensing element
assures a long and reliable operating life
with exceptional stability even in conditions
of high vibration. The sensor has a life
expectancy of approximately five years
depending on the monitoring conditions and
can be rapidly serviced or replaced at the
end of its operating life. It is also available
with a remote mounted gas-sensing module
for installations where
space or access is
restricted. The STX3241
toxic gas sensor provides
economical safety protection
from toxic gases
such as carbon monoxide,
hydrogen sulphide,
nitrogen dioxide, nitric
oxide and sulphur dioxide
in mining and tunneling
applications. The
sensor features high
accuracy electrochemical cell gas sensing
elements, convenient and secure zero and
span calibration and a choice of output signals
of 4–20 mA or 0.4–2V.
www.trolex.com
As featured in Womp 2010 Vol 04 - www.womp-int.com