Special Features:
- Explosion proof according to ATEX for Zone 1
- SIL approval according to DIN EN 61508
- Thermostated, in an explosion-proof housing
- Accurate and reliable, small space requirement
- Analogue/Digital indicator
- Five linear measuring ranges
- Physical measuring principle
- Small stagnant volume, fast response time
- Remote range indication and control
- Flow alarm sensor
- Status alarm, safety in operation
Technical Data:
| 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 0-20mAPMA 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“iPMA 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 viaEEx 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.% O2 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.% O2 |
| 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.% O2
= ± 2% of span at range 1% |
| Reproducibility | deviation: analogue signal output = < 1% of span / digital indicator = ±0,1 vol.% O2 |
| 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.% O2 |
| 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 |
| O2-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 mm2, 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 |
