M&C TechGroup PMA 50 EEX Operator's manual - Manual (Page 9)

9
Gas sampling and gas conditioning technology 9-3.15-ME
8 INTRODUCTION
8.1 SERIAL NUMBER
The type plate with the serial
number is fixed on the left side of the analyser’s housing.
Please indicate always this serial number in case of questions or when purchasing spare parts.
8.2 POWER SUPPLY
The internal power supply of the Oxygen Analyser PMA 50 Ex is reversible 115/230V AC, with
40Hz to 60Hz. Exact indications are to be found on the type plate. Variations of the power supply
of -15% to +10% do not effect the function of the analyser.
9 APPLICATION
The Oxygen Analyser PMA 50 Ex is suitable for the continuous measurement of oxygen in parti-
cle-free and dry sample gases with a maximum dew point of 5°C.
The features of the anaylser are safe operation, accuracy and low maintenance.
The measurement is based on the physical principle of the magneto-dynamic oxygen measuring
cell and is one of the most exact quantitative methods of oxygen determination within the range
of 0-100 Vol.% oxygen.
There is a direct flow against the measuring cell which has got a low volume of only 2 ml (small
stagnant volume). Further characteristics are robustness, extremely small drift, fast response
time (T
90
< 5 sec.) and negligible cross sensitivities to other sample gas components.
Flow variations within a range of 0 Nl/h to 60 Nl/h air result in a changement of the oxygen indic a-
tion which is smaller than 0,2 Vol % O
2
.
Measurements in flue gases and in inerting installments are some typical applications for the
PMA 50 Ex within a great variety of other measurement tasks.