M&C PMA Series User manual

Oxygen – Analyzer Series PMA®
PMA 30/D, PMA 30/A/D
Instruction Manual
Version 1.01.03

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Dear customer,
Thank you for buying our product. In this manual you will find all necessary information about this M&C
product. The information in the manual is fast and easy to find, so you can start using your M&C product
right after you have read the manual.
If you have any question regarding the product or the application, please don’t hesitate to contact M&C or
your M&C authorized distributor. You will find all the addresses in the appendix of this manual.
For additional information about our products and our company, please go to M&C’s website
www.mc-techgroup.com. There you will find the data sheets and manuals of our products in German and
English.
T
his Operating Manual does not claim completeness and may be subject to
technical modifications.
© 04/2023 M&C TechGroup Germany GmbH. Reproduction of this document or
its content is not allowed without permission from M&C.
With the release of this version all older manual versions will no longer be valid.
T
he German instruction manual is the original instruction manual. In case of ar-
bitration only the German wording shall be valid and binding.
PMA®is a registered trade mark.
Version: 1.01.03

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Content
1General information ............................................................................................................................................... 5
2Declaration of conformity ..................................................................................................................................... 5
3Safety instructions .................................................................................................................................................. 6
4Warranty ................................................................................................................................................................... 6
5Used terms and signal indications....................................................................................................................... 7
6Introduction ............................................................................................................................................................. 8
6.1 Serial number ............................................................................................................................................................................. 8
6.2 Power supply.............................................................................................................................................................................. 8
7Application ............................................................................................................................................................... 8
8Technical data.......................................................................................................................................................... 9
8.1 Options........................................................................................................................................................................................10
9Description ............................................................................................................................................................. 11
9.1 Front panel ................................................................................................................................................................................12
9.2 Option process pressure compensation type PD (without SIL certification)............................................13
9.3 Option zero suppression with process pressure compensation type SD/PD (without SIL-
certification) ..............................................................................................................................................................................13
10 The measuring principle...................................................................................................................................... 13
11 Gas flow diagram of the analyzer PMA 30 ....................................................................................................... 14
12 Receipt of goods and storage............................................................................................................................. 15
13 Installation.............................................................................................................................................................. 16
13.1 Connection of Sample gas inlet and sample gas outlet .....................................................................................16
13.2 Standard gas conditioning system ................................................................................................................................17
13.3 Electrical connection ............................................................................................................................................................17
13.3.1 Analog signal output ....................................................................................................................................................18
13.3.2 Description 0/4-20mA outlet ....................................................................................................................................19
13.3.3 Adjustment of the current signal outlet..............................................................................................................19
13.3.4 Adjustment of the load................................................................................................................................................19
13.3.5 Adjustment of the max. current signal at the mA-outlet............................................................................19
13.3.6 Description 0-10 V outlet ............................................................................................................................................20
13.3.7 Status signal.......................................................................................................................................................................20
13.3.8 Remote range control and External measuring range indication...........................................................21
14 Starting up.............................................................................................................................................................. 22
15 Calibration .............................................................................................................................................................. 22
15.1 Zero calibration .......................................................................................................................................................................22
15.2 Span calibration ......................................................................................................................................................................24
16 Measuring............................................................................................................................................................... 25
17 Cross sensitivities .................................................................................................................................................. 27
18 Closing down ......................................................................................................................................................... 30
19 Storage and Transport ......................................................................................................................................... 30
20 Maintenance .......................................................................................................................................................... 30
20.1 Removal of the measuring cell ........................................................................................................................................31
20.2 Mechanical zero point adjustment................................................................................................................................33
21 Trouble shooting................................................................................................................................................... 35
22 Proper disposal of the device ............................................................................................................................. 36
23 Spare parts list ....................................................................................................................................................... 36
24 Appendix................................................................................................................................................................. 37

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List of Illustrations
Figure 1 Dimensions PMA30 ..............................................................................................................................................................11
Figure 2 Front panel PMA 30..............................................................................................................................................................12
Figure 3 Scheme of the measuring cell and optical signal processing.........................................................................14
Figure 4 Gas flow diagram PMA 30 .................................................................................................................................................14
Figure 5 Standard gas conditioning system ...............................................................................................................................17
Figure 6 Back side PMA 30...................................................................................................................................................................18
Figure 7 Pin assignment of D-sub-connector X4 .....................................................................................................................20
Figure 8 Pin assignment of D-sub-connector X1 .....................................................................................................................21
Figure 9 Transmitter unit.........................................................................................................................................................................32
Figure 10 Schematic view of the transmitter unit ..............................................................................................................34
Figure 11 Circuit diagram PMA30 main board .....................................................................................................................40
Figure 12 Assembly diagram PMA 30 main board..............................................................................................................41
Figure 13 Circuit diagram PMA 30 front board ....................................................................................................................43
Figure 14 Assembly diagram front board PMA 30..............................................................................................................44
Figure 15 Circuit diagram extension board PMA 30..........................................................................................................45
Figure 16 Assembly diagram extension board PMA 30 ...................................................................................................46
Figure 17 Connections wall mounting housing PMA 30.................................................................................................47
Figure 18 PMA 30 in wall mounting housing........................................................................................................................48

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HEAD OFFICE
M&C TechGroup Germany GmbH Rehhecke 79 40885 Ratingen Germany
Telephone: 02102 / 935 – 0
Fax: 02102 / 935 – 111
E - mail: [email protected]
www.mc-techgroup.com
1GENERAL INFORMATION
The product described in this operating manual has been examined before delivery and left our works in
perfect condition related to safety regulations. In order to keep this condition and to guarantee a safe oper-
ation, it is important to heed the notes and prescriptions made in this operating manual. Furthermore, at-
tention must be paid to appropriate transportation, correct storage, as well as professional installation and
maintenance work.
All necessary information a skilled staff will need for appropriate use of this product are given in this operat-
ing manual.
2DECLARATION OF CONFORMITY
CE - Certification
The product described in this operating manual complies with the following EU directives:
EMV-Instruction
The requirements of the EU directive 2014/30/EU “Electromagnetic compatibility“ are met.
Low Voltage Directive
The requirement of the EU directive 2014/35/EU “Low Voltage Directive“ are met.
The compliance with this EU directive has been examined according to DIN EN 61010.
Declaration of conformity
The EU Declaration of conformity can be downloaded from the M&C homepage or directly requested from
M&C.
The SIL – Declaration of conformity can be directly requested from M&C
Electrical equipment standard
The electrical equipment standard meets the safety requirements of the following norms and standards: EN
61010.

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3SAFETY INSTRUCTIONS
Please take care of the following basic safety procedures when mounting, starting up or operating
this equipment:
Read this operating manual before starting up and use of the equipment. The information and warnings
given in this operating manual must be heeded.
Any work on electrical equipment is only to be carried out by trained specialists as per the regulations cur-
rently in force.
Attention must be paid to the requirements of VDE 0100 (IEC 364) 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 to the correct mains voltage.
Protection against touching dangerously high electrical voltages:
Before opening the equipment, it must be switched off and hold no voltages. This also applies to any external
control circuits that are connected.
The device is only to be used within the permitted range of temperatures and pressures.
Check that the location is weather-protected. It should not be subject to either direct rain or moisture.
The device must not be used in hazardous areas.
Installation, maintenance, monitoring and any repairs may only be done by authorized personnel with re-
spect to the relevant stipulations.
4WARRANTY
If the equipment fails, please contact M&C directly or else go via your appointed M&C 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 device. 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 sent in a sufficient and proper protective packaging.

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5USED TERMS AND SIGNAL INDICATIONS
DANGER!
This means that death, severe physical injuries and/or important material
damages will occur in case the respective safety measures are not fulfilled.
WARNING!
This means that death, severe physical injuries and/or important material
damages may occur in case the respective safety measures are not ful-
filled.
CAUTION!
This means that minor physical injuries may occur in case the respective
safety measures are not fulfilled.
CAUTION! Without the warning triangle means that a material damage may occur
in case the respective safety measures are not met.
ATTENTION This means that an unintentional situation or an unintentional status may
occur in case the respective note is not respected.
NOTE!
These are important information about the product or parts of the oper-
ating manual which require user’s attention.
SKILLED STAFF
These are persons with necessary qualification who are familiar with in-
stallation, use and maintenance of the product.
High voltages!
Protect yourself and others against damages which might be caused by
high voltages.
Hot surface!
Contact may cause burn! Do not touch!
Wear protective gloves!
Working with chemicals, sharp objects or extremely high temperatures
requires wearing protective gloves.

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6INTRODUCTION
The M&C oxygen analyzer PMA 30 is a temperature-controlled instrument which has been designed for
continuous measurements of oxygen concentrations in particle free and dry sample gas.
6.1 SERIAL NUMBER
The type plate with the serial number is on the back of the analyzer.
Whenever you call M&C regarding questions or orders for the spares please give us the serial number of your
PMA 30.
6.2 POWER SUPPLY
The power supply of the oxygen analyzer PMA 30 is 115 V or 230 V AC, 40–60 Hz. The specification is on the
type plate. Variations of the power supply of 15 % have no influence on the functionality of the analyzer.
7APPLICATION
The Oxygen Analyzer PMA 30 is suitable for the continuous measurement of oxygen in particle-free and dry
sample gases with a maximum dew point of 5 °C.
The features of the anaylzer are safe operation, accuracy and low maintenance.
The measurement is based on the physical principle of the magneto-dynamic oxygen measuring cell and is
one of the most exact quantitative methods of oxygen determination within the range of 0-100 vol% oxygen.
There is a direct flow against the measuring cell which has got a low volume of only 2 ml (small stagnant
volume). Further characteristics are robustness, extremely small drift, fast response time (T90 < 3 sec.) and
negligible cross sensitivities to other sample gas components.
Fluctuations of the sample gas flow in a range from 10 to 60 Nl/h nitrogen (N2) cause a change of the oxygen
reading which is smaller than 0.1 vol% O2.
Measurements in flue gases and in inerting plants are some typical applications for the PMA 30 within a great
variety of other measurement tasks.

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8TECHNICAL DATA
Oxygen analyzer Series PMAVersion PMA 30/D, PMA 30A/D
Part No. 03A2005
03A2005a
03A2001
03A2005a
PMA 30/D 230 V 50 Hz,
PMA 30/D 115 V 60 Hz,
PMA 30A/D 230 V 50 Hz,
PMA 30A/D 115 V 60 Hz
Power supply 230 V AC (standard) or 115 V AC available (a)*
±15 %, 40-60 Hz, 35.5 VA
Electrical connections Power: 3-pole mains plug with 2 m cable; signals: 9 and 25 pole plug
Measuring ranges Selectable for 0-1, 0-3, 0-10, 0-30 and 0-100 vol% O2, linear
External measuring range indication
One potential free contact for each selected range,
Contact rating max. 48 V DC, 0.2 A
Min. contact load 5 V/1 mA
Remote range control
Remote range control for all 5 ranges by means of external potential free con-
tacts max. 30 V DC 3 mA DC. (requirement: selection switch in position Ext.)
Indication
PMA 30A/D: analogue meter with a scale of 0-30 and 0-100 % for each se-
lected range, digital meter, 4 1/2 digit 9 mm high for 0-100 % O2reading, reso-
lution 0.01 vol% O2
PMA 30/D : digital meter, 4 1/2 digit 18 mm high for 0-100 % O2reading, reso-
lution 0.01 vol% O2
Output signal 0-20/4-20 mA* for the chosen range, non-isolated, max. load 300 Ω
Output voltage max.15 V (delivered condition).
Switchable to a load of max. 900 Ω output voltage max.30 V.
Output current limiting adjustable 20.5 mA – 22 mA. Delivered condition
21 mA. 0-1 V DC, load > 100 kΩ, for the range of 0-100 vol%
Response time for 90% FSD < 3 seconds at 60 Nl/h air
Accuracy after calibration 1 % of the span value of measuring range after calibration or 0.02 % O2 de-
pending on which value is the higher one
Reproducibility deviation Deviation: analogue = < 1% of span/digital = ±0.1 vol% O2
Reproducibility deviation without
changing the measuring range**
Analog output without changing measuring range** = < 0.1 % of measuring
range / digital reading = ± 0.01 vol% O2
Influence of ambient temperature No influence up to 45 °C
Influence of barometric pressure
The oxygen reading varies in direct proportion to changes of the barometric
pressure.
Influence of sample gas flow
Fluctuations of the sample gas flow in a range from 10 to 60 Nl/h nitrogen
(N2) cause a change of the oxygen reading which is smaller than 0.1 vol%
O2
Sample gas inlet pressure
0.01 up to 1 bar g, (PMA 30 required admission pressure for competent flow
rate, no pump inside)
Sample gas outlet pressure Outlet of analyzer must discharge freely into atmosphere.
Flow rate of sample gas Min. 10 to max. 60 Nl/h, adjustable with needle valve on the flowmeter (flow-
meter is calibrated for air and has a measuring range of 7-70 Nl/h)
Temperature of sample gas -10 °C up to +50 °C, dry gas
Analyzer temperature Fixed at +55 °C
Ambient temperature -10 °C up to +45 °C
Storage temperature -20 °C up to +60 °C, relative humidity 0-90% RH
Power supply
Internal power unit for 230 V AC standard or 115 V AC available (a)* 15 %, 40-
60 Hz, 35.5 VA
Electrical connections Mains supply: 3-pole chassis plug with 2 m of cable; signals: 7, 9 and 25-pole
plugs

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Oxygen analyzer Series PMAVersion PMA 30/D, PMA 30A/D
Materials in contact with sample gas Platinum, Glass, PTFE, PVDF, Stainless Steel 316Ti, FKM, Epoxy resin
Sample gas connection 1/8" NPT i
Flow alarm thermo-conductive flow sensor downstream mounted after measuring cell
Status alarm
2 x change over contact, potential free, max. 48 V DC, 0.5 A (min. switching ca-
pacity 50 mW) for flow min-max.-fault, transmitter temperature < 45 °C >60 °C,
light source defective, coupling state, measuring range exceeding, range se-
lection switch defective, power supply error, mains voltage breakdown (12
times internal LED-indication)
Protection / electrical standard IP 20 EN 60529 / EN 61010
Housing / colour 3U/28HP - 19-inch cassette European standard/silver
Dimension / weight Height 3U, width 28HP, length 230 mm + approx. 60 mm installation space /
approx. 2.5 kg
* Please specify with order.
**The minimized error of < 0.1 vol% for the reproducibility deviation can only be selected if the measurement and calibration
ranges are identical. If the instrument is switched to another measuring range, a value of < 1 % of the measuring range is to
be expected.
8.1 OPTIONS
Options
03A9165 Extra charge for PMA 30 as solvent resistant execution with measuring cell type PMC-1LB. Material: O-
rings out of Kalrez.®
02A9005 Extra charge for PMA 20/30 in chlorine resistant execution with a special measuring cell type PMC-
1CL2. All gas bearing tubes PTFE/PVDF equipped with purge gas connectors.
03A9535 Extra charge for electrical zero suppressing with process pressure compensation type SD/PD for
PMA30, pressure range 0.6 bar, media wetted parts: stainless steel, PVDF, FKM. Not with SIL-
certification!
03A9530 Extra charge for process pressure compensation type PD for PMA30, pressure range 0.6 bar, media
wetted parts: stainless steel, PVDF, FKM. Not with SIL-certification!
03A9150 Wall mount housing out of aluminum type 30-19 with 19"-insertion system (3U/42TE), incl. clamp
box, clamp boards and filter, with window. protection class: IP65.
01A9165 Extra charge for changed measuring range to 2.5/5/10/25/100 vol% O2, for recorder outlet and dig-
italmeter (only for PMA30/D).