M&C TechGroup PMA 100-L Data sheet User Manual

Oxygen analyser series pma, Special features, Application

M&C TechGroup Germany GmbH • Rehhecke 79 • 40885 Ratingen • Germany

[email protected] • www.mc-techgroup.com • Fon +49 2102 935-0 • Fax +49 2102 935-111

13.5

Embracing Challenge

Safe in operation

High accuracy and reliability

Physical measuring principle, linear
measuring ranges

Fast response time

Transducer unit temperature controlled
at +55 °C

Solid 19" metal housing

Large LCD- indicator with background
lighting

Selectable time constant for noise
damping if needed for unstable process
conditions

4 free selectable O

measuring ranges,

incl. zero suppression, lowest span 1%

Manual, automatic or remote range
control

User friendly menu control correspond-
ing to NAMUR recommendations

Isolated output signal 0/4-20mA

4 configurable MIN. or MAX. oxygen
level alarms

4 free configurable isolated binary
inputs, for example: alarm confirmation,
measuring range control, autocal. start

Analogue signal memory during adjust-
ing and calibration

Manual / automatic calibration

3 code levels, access to 2 code levels
only with release code

Flow alarm monitoring

4 free configurable potential free relay
contact outputs, for example: oxygen
level alarm

Special Features

Oxygen Analyser Series PMA®

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

PMA 100-L

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 instru-

ment for monitoring oxygen concentrations

in various gas analytical process control appli-

cations 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 dis-

played on the LCD display. Sample gas con-

nections 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 cham-

ber with flow alarm sensor. The internal tub-

ing is made of PTFE and PVDF.

Measuring principle of M&C ox-

ygen 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 physi-

cal propertys which distinguishes oxygen

from other gases is its paramagnetism. It is

significantly higher comparing to other com-

mon 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 compo-

nents. With a proper sample conditioning

and pressure, the M&C cell will never need

replacing.

Technical specifications and illustrations are without

obligation, subject to modifications.10.99/01.07