Wall mounting oxygen measurement for % levels
PMA20
wall mounting
temperature controlled
safe area operation
Oxygen measurement in a safe area.
The PMA20 provides fast, accurate and reliable oxygen measurement in a compact wall mounting system.
Paramagnetism is significantly higher for oxygen than other common gases. The M&C magneto-dynamic measurement cell uses this physical phenomenon to provide the most accurate and reliable measurements available.
The small (2 ml) flow cell houses a robust sensor that can have a flow rate of up to 1 l/min. The small cell design improves speed of response and the paramagnetic sensor measures oxygen concentrations with a response time of less than 3 seconds.
The analyser is able to have 5 selectable ranges:
- 0 to 1%
- 0 to 3%
- 0 to 10%
- 0 to 30%
- and 0 to 100%
This allows this system to be used for trace level oxygen measurements as well as oxygen purity applications.
GENERAL |
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Measurement |
Oxygen |
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Configuration |
Portable |
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Measuring range |
Selectable for 0 to 3, 0 to 10, 0 to 30, and 0 to 100 vol% O2, linear. |
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Response time for 90 % FSD |
< 3 seconds at 60 Nl/hr air |
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Accuracy after calibration |
Deviation: analogue = ±1 % of span / digital = ±0.1 vol.% O2 |
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Reproducibility |
Deviation: analogue = <1 % of span / digital = ±0.1 vol.% O2 |
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Influence of ambient temperature |
No influence up to 45 °C |
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Influence of barometric pressure |
The oxygen reading varies in direct proportion to changes of the barometric pressure |
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Influence of sample gas flow |
Variation of gas flow between 0 to 60 Nl/hr air will cause a difference of < 0.1 vol.% O2 |
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Sample gas inlet pressure |
0.01 up to 1 bar g, (PMA20 required admission pressure for competent flow rate, no pump inside) |
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Sample gas outlet pressure |
Outlet of analyser must discharge freely into atmosphere |
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Flow rate of sample gas |
Max. 60 Nl/hr air, adjustable with needle valve on the flowmeter 7 to 70 Nl/hr |
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Temperature of sample gas |
-10 to +40 °C, dry gas |
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O2 transducer temperature |
Fixed at +50 °C |
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Ambient temperature |
-10 to +45 °C |
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Storage temperature |
-20 to +60 °C, relative humidity 0 to 90 %rh |
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Certification |
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European |
CE marked |
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IP protection |
IP 53 EN 60529 |
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Electrical standard |
EN 61010 |
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Shipping |
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Shipping weight |
3 Kg |
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MECHANICAL |
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Dimension |
220 H x 214 W x 182 L mm |
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Enclosure |
Plastic wall mounting housing, grey/blue |
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Wetted materials |
Platinum, Glass, Polypropylene, 316 (TI) Stainless Steel, FPM, Epoxy resin |
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ELECTRICAL / UTILITIES |
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Power |
Internal power unit 230 VAC standard, 115 VAC available ±10 %, 40 to 60 Hz, 26/5 VA |
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Connections |
Terminals 2.5 mm2, 1x PG11, 1x PG13.5 cable gland |
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Sample gas connection |
PP hose connectors DN 4/6 for 4 mm i.d. and 6 mm o.d. tube |
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Outputs |
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Output signal |
0 to 1 VDC, non-isolated, load > 100 KΩ, for the range of 100 Vol%, and 0 to 20 mA or 4 to 20 mA for the chosen range, non-isolated, max. load 300 Ω |
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Analogue indication |
Selectable for each range with a scale of 0 to 30 and 0 to 100% |
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Digital indication |
3 ½ digit 18 mm high LCD for 0 to 100 % O2 reading, selectivity 0.1 vol.% O2 |
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Analogue/Digital indication |
Analogue: selectable for each range with a scale of 0 to 30 and 0 to 100%. Digital: 3 ½ digit 9 mm high LCD for 0 to 100 % O2 reading, selectivity 0.1 vol.% O2. |
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All specifications subject to change |
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