M&C TechGroup PMA 100-L Operator's manual
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Instruction manual
Microprocessor controlled oxygen analyser PMA
Version PMA100-L
9-3.12.1-ME M&C Products Analysentechnik GmbH
Table of content
1. Electrical standards 3
2. Important safety informations 3
3. Warranty 3
4. Used terms and signal indication 4
5. Introduction 4
5.1 Analyser model ............................................................................................................................ 4
5.2 Patent references ..........................................................................................................................4
5.3 Serial number ...............................................................................................................................4
5.4 Power supply ...............................................................................................................................4
5.5 Mounting system .......................................................................................................................... 4
6. Application 5
7. Description 5
7.1 Measuring principle ......................................................................................................................5
7.2 Flow diagram ................................................................................................................................6
7.3 Dimensions and weight ................................................................................................................7
7.4 Front panel .................................................................................................................................... 7
7.5 Technical data............................................................................................................................... 8
8. Supply connections 9
8.1 Medium ........................................................................................................................................ 9
8.2 Electrical .......................................................................................................................................9
8.2.1 mA output ..................................................................................................................................10
8.2.2 In- and output contacts .............................................................................................................. 10
9. Receipt and storage 11
10. Installation 11
11. Starting up 11
12. Menu description 12
13. Calibration 22
13.1 Calibration ..................................................................................................................................22
13.2 Cross-sensitivity .......................................................................................................................... 22
14. Measuring 25
14.1 Automatically range switch ........................................................................................................25
14.2 Expanded measuring range........................................................................................................ 25
15. Function of in- and output contacts and alarms 26
16. Closing down 27
17. Maintenance and repair 28
18. Trouble shooting 29
19. Spare part list 30
20. Appendix 30
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This instruction manual does not claim completeness and is subject to technical modifications.
©12/1999 M&C Products Analysentechnik GmbH. Reproduction of this document or its content is not allowed without permission
from M&C.
PMA® is a registered trade mark.
7th edition: 12/2004
M&C Products Analysentechnik GmbH 9-3.12.1-ME
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1. Electrical standards
The electrical standard corresponds to the safety regula–
tions concerning the low-voltage recommendation 73/23
EWG in version 93/68 EWG and the recommendation of
electromagnetic compatibility 89/336 EWG in version
93/68 EWG.
We meet the following standards:
EN 61010 part 1 / EN 50081 part 1 / EN 50082 part 1
EN 55014 / EN 60555 part 2 & 3 / EN 60335 part 1
2. Important safety informations
Please note the following basic safety procedures when
using this equipment:
• Work on electrical equipment is only to be carried
out by trained specialists as per the regulations
currently in force.
• Attention must be paid to the requirements of IEC 364
(DIN VDE 0100) when setting high-power electrical units
with nominal voltages of up to 1000 V, together with the
associated standards and stipulations.
• Check the details on the type plate to ensure that
the equipment is connected up to the correct mains
voltage.
• Protection against touching dangerously high electrical
voltages.
Before opening the equipment, it must be switched and
hold no voltages. This also applies to any external
control circuits that are connected.
• The equipment is only to be set within the permitted
range of temperatures and pressures.
• Check that the location is weatherprotected. It should
not be subject to either direct rain or moisture.
• The equipment may not be operated in an area at
risk from explosion.
• Installation, maintenance, monitoring and any repairs
may only be done by authorised personnel with respect
to the relevant stipulations.
3. Warranty
If the equipment fails, please contact M&C directly or else
go through your M&C authorised dealer.
We offer a one year warranty as of the day of delivery as
per our normal terms and conditions of sale, and assuming
technically correct operation of the unit. Consumables are
hereby excluded. The terms of the warranty cover repair at
the factory at no cost or the replacement at no cost of the
equipment free ex user location. Reshipments must be
send in a sufficient and proper protective packaging.
9-3.12.1-ME M&C Products Analysentechnik GmbH
4. Used terms and signal indication
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SKILLED STAFF
These are persons with necessary qualification, who are
familiar with installation, use and maintenance of the
product.
The signals are used according to DIN 4844 and
EU Recommendation 91/C53/06.
These are important informations about the product or
parts of the instruction manual which require user’s
attention.
5. Introduction
5.1 Analyser model
The Oxygen analyser type PMA100-L is produced by M&C
Products Analysentechnik in Ratingen, Germany.
5.2 Patent references
The M&C paramagnetic measuring cell is patented in
Europe and the USA under the following patent numbers:
• Germany Pat.-Nr. 36 33 750
• France Pat.-Nr. 87 13 608
• United Kingdom Pat.-Nr. 21 96 127
• The Netherlands Pat.-Nr. 188 2449
• USA Pat.-Nr. 4,807,463
5.3 Serial number
The type plate with the serial number is located at the back
panel of the analyser. Whenever you call M&C regarding
questions or orders for spares please give us the serial
number of your PMA.
5.4 Power supply
The power supply for the oxygen analyser PMA100-L is
230V, 50Hz or 115V, 60Hz (‘a’ added to the Serial-No.). For
detailed information please look at the type plate of your
analyser.
Variations of the power supply in a range of +10% to - 15%
have no influence on the function of the analyser.
5.5 Mounting system
The analyser is build in a 19“ housing, for rack or tablemounting.
M&C Products Analysentechnik GmbH 9-3.12.1-ME
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➡➡
6. Application
The transducer of the PMA100-L works at a stable temperature of +55°C. Therefore the analyser is suitable for continuous measurements of oxygen concentrations in particlefree and dry sample gases.
Safe operation, reliability and minimized maintenance are
the characteristic of the PMA100-L.
The operation of the instrument is based upon the principle
of the magneto-dynamic cell which is the most accurate
and reliable cell for determining the oxygen content in gas
mixtures in a range of 0 to 100 Vol.-%.
The patented M&C measuring cell has been improved in
order to achieve stability, minimum drift of temperature and
extremely fast response time. Due to this fast response
time and the negligible cross-sensitivity from other gases
the PMA100-L is applicable in a wide range of processes,
like:
• monitoring of flue gases,
• inerting installations,
• fermentation processes,
• process- and lab-measurements, etc.
7. Description
7.1 Measuring principle
The paramagnetic susceptibility of oxygen is significantly
greater than that of other common gases, and for this
reason the molecules of oxygen are attracted much more
strongly by a magnetic field than the molecules of other
gases. Most of the other gases are slightly diamagnetic, i.e.
the molecules are then repelled by a magnetic field.
The principle of the magneto-dynamic cell is based upon
Faraday’s method of determining the magnetic susceptibility of gas. The cell consists of two nitrogen-filled quarts
spheres arranged in the form of a dumb bell. A single turn
of platinum wire is placed around the dumb bell which is
suspended in a symmetrical non-uniform magnetic field.
When the surrounding gas contains oxygen, the dumb bell
spheres are pushed out of the magnetic field by the change
in the field which is caused by the relatively strong paramagnetic oxygen. The torque acting on the dumb bell will
be proportional to the paramagnetism of the surrounding
gas and consequently it can be used as a measure of the
oxygen concentration.
N
N
2
S
Nitrogen=Diamagnetic Oxygen=Paramagnetic
Fig. 1: Magnetic susceptibility of gases
2
1
1 : Quarts sphere dumb bell
2 : Platinum wire
3 : Mirror
4 : Magnetic pole pieces
Fig. 2: The measuring cell in theory
3
N
S
4
O
2
The distortion of the dumb bell is sensed by a light-beam
and projected on a mirror attached to the dumb bell whereof it is reflected to a pair of photo cells (Fig. 3). When both
photo cells are illuminated equally the output will be zero.
The output from the photo cells is connected to an amplifier,
which in turn is fed to the feedback coil of the measuring
cell. If the oxygen content of the gas sample changes,
9-3.12.1-ME M&C Products Analysentechnik GmbH
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1
1: Measuring cell
2: „LED“ light beam
3: Photo cell
4: Feed back amplifier
5: Output amplifier
6: Meter indication
Fig. 3: Principle of operation
➞
➞
23 54
the corresponding output of the amplifier, which is a current
and also proportional to the oxygen content, produces a
magnetic field in the feedback coil opposing the forces and
thereby causing the dumb bell to rotate.
Since the feedback current from the amplifier is proportional to the oxygen content of the gas sample, the output
signals produced by the amplifier will be accurate and
linear. The paramagnetic susceptibility of oxygen varies
inversely as the square of the absolute temperature. Therefore, a temperature sensitive element in contact with the
measuring cell assembly is included in the feedback
current circuit in order to provide compensation for
changes in analyser temperature.
7.2 Flow diagram
The flow can be adjusted in a range of 25 - 60Nl/h air at the
flowmeter with needle valve 2 built on the front panel of
the analyser.
The flow sensor at the outlet of the measuring cell 3 de–
tects the sample flow if it decreases under 25l/hr.
We recommend a conditioning system upstream the
analyser PMA100-L, f.e. consisting of a cooler and fine
filter.
6
PMA100-L
1: external filter
2: flowmeter with needle valve
3: patented M&C measuring cell PMA100-L
4: flow control
PMA100-LF
1: external filter
2: flowmeter with needle valve
3: patented M&C measuring cell PMA100-L
4: flow control
Fig. 4: Flow diagram of the analyser
1234
134 2
We like to inform you about suitable M&C equipment.
M&C Products Analysentechnik GmbH 9-3.12.1-ME
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7.3 Dimensions and weight
The analyser is build in a 19” housing, also suitable for
table mounting. Fig. 5 shows the dimensions of the
PMA100-L. Please take additional 60mm fitting-depth into
consideration when installing the analyser.
The weight of the analyser is approx. 11 kg.
483
177
(4U)
(84HP)
20,9 V0l.% O
1010 mbar
102
⇑⇓
PMA100
465
2
Alarm
440
7.4 Front panel
The following figure shows the front panel of the oxygen
analyser PMA100-L.
You can see the double-lined LCD display 1 , the alarm
LED 2 , the flowmeter with needle valve 3 , status LEDs
4 and the six operating keys 5 .
The sample flow can be adjusted at the needle valve in a
range of 25-60Nl/hr.
The control panel refers to NAMUR standard and is
devided into:
• Select key
• Enter key
• Direction key
• Direction key
⇑⇑
⇑
⇑⇑
⇓⇓
⇓
⇓⇓
• CAL key
• Measuring key
(for more functional description see chapter 12)
341
50
10
7
Fig. 5: Dimensions of the PMA100-L
20,9 V0l.% O
1
1010 mbar
Selec Enter ⇑⇓Cal Meas
PMA100 O2-analyser
Fig. 6: Front panel with display, operating keys
and flowmeter
2
4
5
Alarm
2
3
9-3.12.1-ME M&C Products Analysentechnik GmbH
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7.5 Technical data
Part No. 03A3100(a): PMA100-L, power supply 230 VAC, 50 Hz, 115 VAC, 60 Hz
signal: 4-20 mA; (a)=115 V
Measuring ranges 4 linear measuring ranges free selectable, lowest span 1%,
basis parameterizing: 0-2,5; 0-10; 0-25; 0-100 Vol.% O2 *; manual, automatic
or remote range control and range indication is possible
Indication, suitable in German, English and French 2 line, 16-sign. LCD-display, resolution 0,01 Vol.%O2, continuous
O2-indication and read off O2-transducer temperature, mA-signal, measuring range, time, date, error/alarm message
Output signals selection: isolated 0-20, 2-20, 4-20*, 4-20.5 mA for the selected range,
max. load 500 Ω;
Relay outputs, free configurable 4 potential free relay contacts NO, contact rating max. 48 VDC, 500 mA, 15 W
Binary inputs, free configurable potential free, 4 x 12 - 24 VDC, max. 20 mA or internal 24 V
Flow alarm caloric conductibility sensor in the outlet of the cell
Status alarm for min. flow, transducer temp. < 50 °C, processor error, optional pressure
sensor: LED-indication and potential free contact output,NO, max. 48 VDC,
500 mA, 15 W and mA output signal, f.e. 22 mA
Alarm contact for underflow or exeeding of the measuring range, termination of the
calibration, external alarm, concentration alarm: LED-indication and potential
free contact output, NO, max. 48 VDC, 500 mA, 15 W
Response time for 90%-FSD < 3sec at 60 NI/hr air
Accuracy after calibration deviation ± 1% of 2-100% span,
Reproducibility deviation < 1% of span
Influence of ambient temperature no influence up to 50 °C
Influence of barometric or process pressure the oxygen reading varies in direct proportion to the baromatric or process
pressure variation
Influence of sample gas flow variation in gas flow between 0 and 60 Nl/hr air will cause a difference in
reading of < 0,1 Vol.%O
2
Sample gas
- inlet pressure 0,01 up to 0,6 bar (PMA100-L requires positive pressure for adequate flow
rate, no pump inside)
- outlet pressure outlet of analyser should discharge freely into atmosphere
- flow rate 25 - 60 Nl/hr air
- temperature -10 °C up to +50 °C dry gas
O2-transducer temperature fixed at +55 °C
Ambient temperature -10 °C up to +50 °C
Storage temperature -20 °C up to +60 °C, rel. humidity 0-90% RH
Power supply internal power unit for 230 VAC or 115 VAC available, (a) +/-10%, 40-60 Hz, 35 VA
Electrical connections mains supply: 3-pol. chassis plug with 2 m cable; signals: 2 x Sub-D plug
Materials in contact with sample gas platinum, epoxy resin, glass, FPM, stainless steel 316, PTFE, PVDF
Sample gas connection 1/8“ NPT internal thread*, option with tube connector DN 4/6 PVDF
available part no.: 05V1045
Protection / Electrical standard IP40 (EN60529) / EN61010
Housing/ 19“ rack mounting with front handles
Front colour grey RAL 7032
Dimensions/ width: 84HP; hight: 4U; depth: 350 mm + approx. 60 mm installation space
Weight approx. 11 kg
supply voltage
DC
* standard/basis execution
M&C Products Analysentechnik GmbH 9-3.12.1-ME
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8. Supply connections
8.1 Medium
The oxygen analyser PMA100-L is suitable for continuous
measurements of oxygen concentrations in particle-free
and dry sample gases. Therefore it is recommended to use
a gas conditioning system upstream the analyser, f.e.
equipped with a cooler and a particle filter.
We like to inform you about suitable M&C equipment.
The following diagram shows the connections on the back
panel of the PMA100-L.
Sample in Sample out
Before opening the assembly cover
disconnect the electrical supply!
X1 X2 X3 X4 X5
Power in
Patented measuring cell
USA patent number 4807463
For connection of the sample gas in- and outlet use 1/8”
NPT male fittings.
We like to inform you about our range of tube and pipe
connectors.
8.2 Electrical
The analyser PMA100-L is equipped with an internal power
switch. The 2m cable with 3-pole plug at the end is part of
the standard supply.
False supply voltage can damage the equipment. When
connecting the equipment, please ensure that the supply
voltage is identical with the information provided on the
model type plate!
Fig. 7: Connections on the back panel of the
PMA100-L
Note!
For the erection of power installations with rated voltages
up to 1000V, the requirements of VDE 0100 and relevant
standards and specifications must be observed!
The main circuit must be equipped with a fuse corresponding to the nominal current (over current protection); for
electrical details see technical data (chapter 7.5).
9-3.12.1-ME M&C Products Analysentechnik GmbH
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