Information And Safety Instructions For Using The Analyzer In Hazardous Areas; Proper Use; Analyzing Gases From Ex Zone Ii 1G Ex Iic T4 - M&C PMA Series Instruction Manual

4.1

PROPER USE

The oxygen analyzer PMA50 EX is suitable for analyzing gas mixtures classified in Zone 1 with an oxygen
content of up to 21% by volume. The PMA50 EX is suitable for the continuous measurement of oxygen in
particle-free and dry sample gases with a maximum dew point of 5 °C [41 °F].
Only install and operate the analyzer under the operating parameters and conditions described in chapter 5
"Information and safety instructions for using the Analyzer in hazardous areas" and chapter 10 "Technical
Data" of this instruction manual.
Refrain from all uses other than for this purpose. Improper use can lead to serious injuries, for more details
see the safety instructions at the appropriate place.
5 INFORMATION AND SAFETY INSTRUCTIONS FOR USING THE ANALYZER
IN HAZARDOUS AREAS
The Oxygen Analyzer PMA 50 Ex is suitable for use in hazardous area group II category 2.
The explosion proof protection is:
II 2G Ex d b eb IIC T4 Gb IBExU 16 ATEX 1192 , IECEx IBE 16.0041
The oxygen analyzer PMA50 EX is suitable for analyzing gas mixtures classified in Zone 1 with an oxygen content
of up to 21% by volume.
Higher oxygen concentrations are not covered by the ATEX directive.
The analyzer has been certified through IBExU, authorized company for official approval of electric equipment in
the Netherlands. Detailed information and a copy of the certificate are attached to this instruction manual.
Installation and operation of the analyzer has to be done corresponding to the conditions in the Ex-certificate (see
appendix). Only in this case, the reliability of operation in hazardous area can be guaranteed.
All changes of the standard analyzer with parts which are not specified or approved by M&C as well as repair and
service with not specified parts mean a loss of the Ex-certificate.
In case of doubt, please turn directly to M&C respectively to your M&C franchised dealer.
5.1
ANALYZING GASES FROM EX ZONE
T wo protective devices must always be used for category 1G.
In both, the measuring gas inlet and outlet of the analyzer PMA50 EX, a M&C breathing and draining device
MC95A EX II 2G Ex db IIC Gb is mounted.
When using explosive gas mixtures, which require zone 0, a suitable protection system must be provided in both
the inlet and outlet against flame flashback.
The entire body has to be made of stainless steel.
Alternatively, other suitable protective devices against flame flashback can be used.
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II 1G EX IIC T4
PMA 50 EX | 1.01.04 7