M&C TechGroup PMA 100 Data sheet - Manual

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
13.6
Embracing Challenge
ƒ ƒ Safe in operation
ƒ ƒ High accuracy and reliability
ƒ ƒ Physical measuring principle, linear measuring
ranges
ƒ ƒ Fast response time
ƒ ƒ Transducer unit temperature controlled at +55 °C
ƒ ƒ Solid 19" metal housing
ƒ ƒ Large LCD- indicator with background lighting
ƒ ƒ Selectable time constant for noise damping if
needed for unstable process conditions
ƒ ƒ 4 free selectable O
2
measuring ranges, incl. zero
suppression, lowest span 1%
ƒ ƒ Manual, automatic or remote range control
ƒ ƒ User friendly menu control corresponding to
NAMUR recommendations
ƒ ƒ Isolated output signal 0/4-20mA
ƒ ƒ 4 configurable MIN. or MAX. oxygen level alarms
ƒ ƒ 4 free configurable isolated binary inputs, for exam-
ple: alarm confirmation, measuring range control,
autocal. start
ƒ ƒ Process pressure measuring and compensation
ƒ ƒ Analogue signal memory during adjusting and
calibration
ƒ ƒ Manual / automatic calibration
ƒ ƒ 3 code levels, access to 2 code levels only with
release code
ƒ ƒ Interface RS 232 type
ƒ ƒ Flow alarm monitoring
ƒ ƒ 4 free configurable potential free relay contact
outputs, for example: oxygen level alarm
ƒ ƒ option: interface RS 485 type
Special Features
Oxygen Analyser Series PMA®
Version PMA 100
Microprocessor based,
19”-rack unit or table version
PMA 100
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 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 is a tem-
perature controlled instrument which has
been designed for continuous measurements
of oxygen concentrations in particle-free and
dry sample gas. The PMA 100 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 incom-
ing 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 and also with
process pressure sensor. The internal tubing is
made of PTFE and PVDF.
The PMA 100 has got nearly the same design
as the PMA 100-L. There are only a few differ-
ences: the PMA100 is aditionnally equipped
with a pressure sensor, i.e. a pressure compen-
sation. Furthermore, there is an interface type
RS 232 and the possibility to drive 3 external
solenoid valves for an automatic calibration.
Measuring principle of M&C ox-
ygen analyser
The PMA 100 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.05.97/01.07