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PREPARATION
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ETC00781(4) Series 100 e 02/2004
PURGE GAS CONNECTIONS OF BINOS
®
100 F / CONTINUOUS PURGE
5.3.3 Purge gas connection of BINOS
®
100 F for Ex zones
a) ATEX Applications
Refer to the supplemental manual for installing analyzers in hazardous
areas where ATEX is applicable.
b) Z purge for CSA-C/US Ex Zone 2 Non-Flammable Atmospheres
This analyzer is not designed for analysis of flammable sample !
Introduction of flammable samples into this equipment could result in explosion,
causing severe personal injury, death or property damage !
Consult factory if flammable samples are to be measured !
Z Purge kit is designed for protection against the invasion of flammable gases into enclosure from
outside atmosphere only. It does not provide protection against the release of inflammable gases
contained in the sample gas via internal leakages.
P Connect purge gas (air or N
2
) to the BINOS
®
100 F inlet via 1/4" O.D. tube connection
(see Fig. 27-4) !
Outlet is done via 3/8" O.D. fitting with analyzer specific insert throttle.
P Use purge gas supply under pressure of 58 psig (4 bar; 5,000 hPa abs.).
. This will provide a flow rate approx. 55 scfh (26 l/min.). At this flow rate, five case volumes
of purge gas will pass through the instrument in 11 minutes.
After 11 minutes, reduce the pressure to 5.1 psig (350 mbar; 1,350 hPa abs.), resulting in
a flow rate of approx. 18 scfh (8.5 l/min.). This will provide an enclosure over-pressure of
approx. 0.24 inch H
2
O (0.6 hPa) for continuous purge.
Pressure inside the housing must not exceed 5 hPa at normal operation or
10 hPa for a short time of less than 1/2 hour resp. !