Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
|69<br />
A<br />
The capillaries are filled with chemical reagents and filter layers. These ensure a reliable<br />
and reproducible response when the corresponding hazardous substance is present, which<br />
is one of the main reasons for the high degree of accuracy of the measuring system.<br />
Optoelectronic detectors within the analyzer evaluate the reaction effects in the chip<br />
capi -llary. This has various advantages: small changes in the reaction products can be<br />
reliably identified, and measurements can be performed even under conditions of complete<br />
darkness, since the measuring signal is electrically processed and indicated in an<br />
illuminated display.<br />
The power supply needed for the analyzer to operate is provided by four AA batteries, which<br />
have a longer service life than rechargeable batteries on account of their lower<br />
self-discharge current.<br />
3.5 The Measurement<br />
The handling of the Dräger CMS is always<br />
constant, no matter what gas or vapor is<br />
measured. This is provided by simple menu<br />
driven comm ands given by the display as well as<br />
the one button/switch operation. The Dräger<br />
CMS can be implemented with a minimum of<br />
training costs.<br />
Display<br />
The analyzer’s most important operating feature<br />
is the slide switch positioned symmetrically in the<br />
middle. It is symmetrical in order to allow both left and right-handed people to use it with<br />
equal ease. The whole measurement is performed using only four switch positions.<br />
ST-14162-2008
Change language