M&C TechGroup PMA 100-L Datasheet

PMA 100-L

Embracing Challenge

Oxygen Analyser Series PMA®

Version PMA 100-L
Microprocessor based,
19”-rack unit or table version

Special Features

Safe in operation

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High accuracy and reliability

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Physical measuring principle, linear

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measuring ranges

Fast response time

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Transducer unit temperature controlled

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at +55 °C

Solid 19" metal housing

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Large LCD- indicator with background

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lighting

Selectable time constant for noise

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damping if needed for unstable process
conditions

4 free selectable O2 measuring ranges,

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incl. zero suppression, lowest span 1%

Manual, automatic or remote range

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control

User friendly menu control correspond-

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ing to NAMUR recommendations

Isolated output signal 0/4-20mA

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4 congurable MIN. or MAX. oxygen

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level alarms

4 free congurable isolated binary

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inputs, for example: alarm conrmation,
measuring range control, autocal. start

Analogue signal memory during adjust-

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ing and calibration

Application

Due to the extremely fast response time of the
patented M&C magneto-dynamic measuring
cell with no stagnant volume as well as the
negligible cross sensitivity from other sample
gas components, the M&C oxygen-analyser
PMA 100-L has a wide variety of applications.
The analyser is a suitable and reliable instru­ment for monitoring oxygen concentrations
in various gas analytical process control appli­cations including flue gas measurements,
inert gas installations, fermentation processes
and laboratory process control installations.

Description

The M&C oxygen analyser PMA 100-L is a
temperature controlled instrument which has
been designed for continuous measurements
of oxygen concentrations in particle-free and
dry sample gas. The PMA 100-L is a reliable
and easy-to-operate instrument. It is built
into a housing for 19 inch rack mounting /
table version.

The transducer unit maintains a constant
operating temperature of 55 °C.

The programmable measuring ranges are dis­played on the LCD display. Sample gas con­nections as well as connectors for incoming
power supply and all output / input signals
are located at the rear side of the analyser. The
sample gas enters the analyser via an external
protective fine-filter. The required flow rate
can be adjusted at the flow meter with needle
valve, mounted on the front panel upstream
the M&C measuring cell and the flow cham­ber with flow alarm sensor. The internal tub­ing is made of PTFE and PVDF.

Measuring principle of M&C ox­ygen analyser

The PMA 100-L utilises the paramagnetic
principle of operation to measure oxygen
concentration. The analyser measures the
paramagnetic susceptibility of the oxygen
in the sample gas by means of the M&C
magneto-dynamic measuring cell. The physi­cal propertys which distinguishes oxygen
from other gases is its paramagnetism. It is
significantly higher comparing to other com­mon gases. This operation principle is one of
the most accurate and reliable procedures to
determine the oxygen concentration in a gas
mixture from 0 to 100 Vol.%.

The robust M&C cross-flow cell has no
stagnant volume. Advantages are the fast
response time, the flow rate up to 60 l/hr, the
small volume of 2 ml, the extremely low drift,
the absolute linearity and the negligible cross
sensitivity against other sample gas compo­nents. With a proper sample conditioning
and pressure, the M&C cell will never need
replacing.

Manual / automatic calibration

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3 code levels, access to 2 code levels

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only with release code

Flow alarm monitoring

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4 free congurable potential free relay

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contact outputs, for example: oxygen
level alarm

Technical specications and illustrations are without
obligation, subject to modications.10.99/01.07

M&C TechGroup Germany GmbH • Rehhecke 79 • 40885 Ratingen • Germany
[e-mail] • www.mc-techgroup.com • Fon [phone] • Fax [phone]

13.5

Gas flow diagram PMA 100-L

1. External fine filter

2. Flowmeter with needle valve

3. Oxygen measuring cell PMA

4. Flow alarm sensor

Dimensions

1 2

3

4

FLA

102

177 (4HE)

Dimensions in mm

1013 mbar

20,93 Vol% O

Select

O-Analyser

2

PMA 100

Enter

2

Front view

483 (84TE)

465

Alarm

MeasCal

440

Side view

341

50

10

7

13.5

M&C TechGroup Germany GmbH • Rehhecke 79 • 40885 Ratingen • Germany
[e-mail] • www.mc-techgroup.com • Fon [phone] • Fax [phone]

Technical specications and illustrations are without
obligation, subject to modications. 10.99/01.07