Portable oxygen measurements at % level

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PMA10

<3 seconds response time
portable and rugged
physical measurement principle
high accuracy

Portable oxygen measurement.

When making spot checks with portable systems, accuracy and speed of response are key parameters. The PMA10 and PMA10S provide fast, accurate, and reliable oxygen measurement in a lightweight portable device.

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. See details of the PMA10 and PMA10S by selecting the "Versions" tab for the most suitable unit for your application.

PMA10

Datasheet for portable oxygen meter PMA10

The PMA 10 provides the standard ranges of

0 to 1%
0 to 3%
0 to 10%
0 to 30%
and 0 to 100%

PMA10S

Datasheet for portable oxygen meter PMA10S

The PMA10S may be used for all the normal ranges of the PMA10, and has an electronic zero suppression function when measuring close to 100% O₂ in oxygen purity measurements.

Oxygen purity measurements can only be made discontinuously. The measuring accuracy of
the analyser can be maintained when calibration of the instrument with a certified gas takes place before the measurement procedure. This avoids the influence of ambient temperature and pressure changes. A measurement of 1 vol.% can be easily realized whilst the maximum value remains at 100 vol.%.

GENERAL
Measurement	Oxygen
Configuration	Portable
Measuring range	Selectable for 0 to 3, 0 to 10, 0 to 30, and 0 to 100 vol.% O₂, linear. (Zero suppression measuring range 99 to 100 vol.% O₂ standard, also available ranges 97/90/70 to 100 % for S version)
Response time for 90 % FSD	< 3 seconds at 60 Nl/hr air
Accuracy after calibration	Analogue = ±1 % of span Digital = ±0.1 vol.% O₂ error of precision
Reproducibility	Analogue = <1 % of span Digital = ±0.1 vol.% O₂ error
Influence of ambient temperature	Zero point ±0.02 vol.% O₂/ °C; Sensitivity ±0.1 vol.% O₂ / °C
Influence of barometric pressure	The oxygen reading varies in direct proportion to changes of the barometric pressure
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
Sample gas inlet pressure	0.01 up to 1 bar g, (PMA 10 required admission pressure for competent flow rate, no pump inside) option: PMA 10 with internal pump, capacity 0.9 Nl/min. without pressure
Sample gas outlet pressure	Outlet of analyser must discharge freely into atmosphere
Flow rate of sample gas	Max. 60 Nl/hr air, adjustable with needle valve on the flowmeter 7 to 70 Nl/hr
Temperature of sample gas	-10 to +40 °C, dry gas
Ambient temperature	-10 to +55 °C
Analyser temperature	According to ambient temperature, non heated version
Storage temperature	-20 to +60 °C, relative humidity 0 to 90 %RH
Certification
European	CE marked
IP protection	IP 41 EN 60529
Electrical standard	EN 61010
Shipping
Shipping weight	3 Kg
MECHANICAL
Dimension	150 H x 202 W x 260 D mm
Enclosure	Plastic housing, grey
Wetted materials	Platinum, Glass, Polypropylene, 316 (TI) Stainless Steel, FPM, Epoxy resin
ELECTRICAL / UTILITIES
Power	Internal power unit 230 VAC standard, 115 VAC available ±10%, 40 to 60 Hz. 8 VA option: rechargeable battery, recharged by the internal power unit. 10 hr battery capacity, 14 hr recharge time with instrument off.
Connections	mains: 3-pole chassis plug. signal: 3-pole plug
Cable length	2 m for mains supply
Sample gas connection	PP-hose nipple for DN 11 to 4 mm tube
Outputs
Output signal	0 to 1 VDC, non-isolated, load > 100 KΩ, for each selected range
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
All specifications subject to change