Manual

M&C TechGroup Germany GmbH • Rehhecke 79 • 40885 Ratingen • Germany
[e-mail] • www.mc-techgroup.com • Fon [phone] • Fax [phone]
13.7
Technical specications and illustrations are without
obligation, subject to modications. 02.95/01.07
Technical Data
W A R N I N G ! I M P O R T A N T !
An external fine filter must always be used at the gas inlet of the analyser. Depending
on the composition of the sample gas, it may be necessary to use a sample conditio-
ning system.
Version PMA 50 EEX thermostated oxygen analyser in explosion-proof housing
Part No. 05A1000 :
05A2500 :
05A2505 :
PMA 50 EEX, power supply 230V 40-60Hz, signal 0-1V and 0-20mA
PMA 50 EEX/P/PD-1-50, power 230V 40-60Hz, 0-1V / 0-20mA, pressure compensation 0,6 - 1,5 bar abs. with purging
the enclosure via two certified ventilate arrestors in the in- and outlet NPT1/4“i
PMA 50 EEX/P/PD, power 230V 40-60Hz, 0-1V / 0-20mA, pressure compensation 0,6 - 1,1 bar abs.
05A1000a / 05A2505a / 05A2505a = 115V 40-60Hz
(variations of +10% to -15% have no influence on the function of the analyser), 40-60Hz, 35,5VA, power supply via
EEx e connecting box, diameter of cable: 5mm - 9mm (PG13,5), 7mm - 12mm (PG16)
Measuring ranges selectable for 0-1, 0-3, 0-10, 0-30 and 0-100 vol.% O
2
linear and position EXTERNAL
External range indication externally: Potentialfree contact for all measuring ranges. Capacity 48V DC 200mA DC, Minimum contact rating
5V/1mA; internally : LED indication
Remote range control Measuring ranges selectable via external potential free contacts 30V DC 3mA DC
Combined analogue/digital indicator analogue meter with a scale of 0-30 and 0-100% for each selected range
digital meter 3
1
/
2
digit 9 mm high LCD-indicator for 0-100% O
2
reading, selectivity 0,1vol.% O
2
Output signals 0-10V DC, burden >100 KΩ for range 0-100 % isolated.
0/4-20mA burden 270 Ω for every measuring range, electrically isolated; output voltage max. 15V (ex works).
Switchable max. burden 800 Ω, output voltage max. 30V.
Output current limiting adjustable 20mA-22mA (20,5mA ex works)
Response time for 90% FSD < 5 seconds at 60 Nl/hr air
Accuracy after calibration deviation: analogue signal output = ± 1% of span at range 3 - 100% / digital indicator = ±0,1 vol.% O
2
= ± 2% of span at range 1%
Reproducibility deviation: analogue signal output = < 1% of span / digital indicator = ±0,1 vol.% O
2
Influence of ambient temperature no influence up to 50 °C
Influence of barometric pressure The oxygen reading varies in direct proportion to changes of the barometric pressure
# no influence from 0,5-1,5 bar abs. at PMA 50 EEX/P/PD-1-50 with process pressure compensation
Influence of sample gas flow Variation in gas flow between 0-60 Nl/hr air will cause a difference of < 0,2 vol.% O
2
Sample gas inlet pressure 0,01-0,1 bar g standard or # in case of purging up to 0,5 bar g
(PMA 50 EEX required admission pressure for competent flow rate, no pump inside)
Sample gas outlet pressure outlet of analyser must discharge freely into atmosphere
or 0,6-1,5 bar abs. at version # PMA 50 EEX/P/PD-1-50 with process pressure compensation
Flow rate of sample gas max. 60 Nl/hr (no flowmeter inside)
Temperature of sample gas -10 °C up to +50 °C dry gas
O
2
-transducer temperature fixed at +55 °C
Ambient-/ Storage temperature -10 °C up to +50 °C / -20 °C up to +60 °C, relative humidity 0-90% RH
Power supply internal power unit for 230VAC standard or 115VAC (a)* +/-10%, 40-60Hz, 35,5VA
Electrical connections terminals 2,5 mm
2
, 3x PG cable glands (mains supply, signals, range indication, remote ranging , status alarm)
Materials in contact with sample gas Platinum, Glass, Stainless Steel 316Ti, Epoxy resin, PTFE, PVDF
Sample gas connection
1
/
4
" NPTi
Flow alarm thermo-conductive flow sensor downstream mounted after measuring cell
Status alarm Change-over contact, switching capacity 250 V AC 2A AC, 48V DC 200mA DC minimum contact rating 50mW for
temperature <+45°C / >+60°C, defect light beam, measuring cell not coupled, flow alarm <10 / >70Nl/h, power
supply error control, mains voltage breakdown
Protection / classification
IP 54 EN 60529 / II2G EEX d e IIC T5 or II1/2G EEX d e [ia] IIC T5
Certificate No. KEMA 03 ATEX 2215X
Temperature cutoff at 72°C via thermal fuse, non-reversible
Housing / colour wall mounted explosion-proof housing / blue
Dimension / weight 475 (535) x 275 (355) x 200 mm / h x w x d / approx. 22 kg
Options Part-No. 05A9000: purging the enclosure via two certified ventilate arrestors, for pressures up to max. 1,5 bar abs.
and/or corrosive gases, connection
1
/
4
" NPTi, purge gas inlet pressure max. 100 mbar, flow rate 10-60 Nl/hr
Part-No. 05A9005: purging the enclosure via one certified ventilate arrestor, for pressure range > 1,1 bar - 1,5 bar abs.
and non-corrosive gases, connection
1
/
4
" NPTi
Part-No. 05A9015: Zero suppressing type SD-1/50 for PMA-50 pressurerange 0,5-1,5bar abs. Lowest range 97-100%
material: SS316, PVDF, Viton. mounted in the PMA-50Ex. Only in connection with PMA50EEx/P/PD-1/50.
Externally switchable via potential free contacts, 30V DC 3mA DC
Part-No. : Transmitter for measurements of gases from ex-zone 0 II 1/2 G Eex de [ia] IIC T5
Part-No. 90A0009: Measuring cell type PMC-1LB, solvent resistant.
Part-No. 90A0006: Measuring cell PMC-1G with glass solder. O-ring made of Chemraz
* Please specify with order.