M&C PMA Series Instruction Manual

Oxygen – analyzer

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Oxygen – Analyzer Series PMA®

PMA30/D, PMA30/A/D

Instruction Manual

Version 1.02.00

Table of Contents

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Page 1 Oxygen – Analyzer Series PMA® PMA30/D, PMA30/A/D Instruction Manual Version 1.02.00...
Page 2: Dear Customer
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.
Page 3: Table Of Contents
Content General information ............................. 5 Declaration of conformity ........................... 5 Safety instructions ..............................6 Intended use ....................................6 Warranty................................. 6 Used terms and signal indications ........................7 Introduction ................................9 Serial number ..................................... 9 Power supply ....................................9 Application ................................9 Technical data ..............................
Page 4: List Of Illustrations
List of Illustrations Figure 1 Dimensions PMA30 ................................12 Figure 2 Wall-mount housing (version since 05.2024) ......................12 Figure 3 Front panel PMA30 ................................13 Figure 4 Scheme of the measuring cell and optical signal processing ................. 15 Figure 5 Gas flow diagram PMA30..............................
Page 5: General Information
HEAD OFFICE M&C TechGroup Germany GmbH  Rehhecke 79  40885 Ratingen  Germany Telephone: 02102 / 935 – 0 Fax: 02102 / 935 – 111 E - mail: info@mc-techgroup.com www.mc-techgroup.com General information The product described in this manual has been built and tested in our production facility. All M&C products are packed to be shipped safely.
Page 6: Safety Instructions
Safety instructions Follow these safety directions and instructions regarding installation, commissioning and operation of this device: Read this manual before commissioning and operating the product. Please make sure to follow all safety instruc- tions. Installation and commissioning of electrical devices must be carried out only by qualified skilled personnel in com- pliance with the current regulations.
Page 7: Used Terms And Signal Indications
Used terms and signal indications This means that death, severe physical injuries and/or important material damage will occur in case the respective safety measures are not fulfilled. Danger This means that death, severe physical injuries and/or important material damage may occur in case the respective safety measures are not ful- filled.
Page 8 Wear protective gloves! Working with chemicals, sharp objects or extremely high temperatures requires wearing protective gloves. Wear safety glasses! Protect your eyes while working with chemicals or sharp objects. Wear safety glasses to avoid getting something in your eyes. Wear protective clothes! Working with chemicals, sharp objects or extremely high temperatures requires wearing protective clothes.
Page 9: Introduction
Introduction The M&C oxygen analyzer PMA30 is a temperature-controlled instrument which has been designed for con- tinuous measurements of oxygen concentrations in particle free and dry sample gas. 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 PMA30.
Page 10: Technical Data
Technical data  Version PMA30/D, PMA30A/D Oxygen analyzer Series PMA Part No. 03A2005 PMA30/D 230 V 50 Hz, 03A2005a PMA30/D 115 V 60 Hz, 03A2001 PMA30A/D 230 V 50 Hz, 03A2005a PMA30A/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;...
Page 11: Options
Oxygen analyzer Series PMA  Version PMA30/D, PMA30A/D 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;...
Page 12: Description
Description The PMA30 is a reliable and easy-to-operate instrument. It is built into a compact 19-inch cassette. The trans- ducer unit maintains a constant operating temperature of 55 °C and a flashing LED on the control panel indicates the proper operating temperature of the analyzer. The five measuring ranges are displayed on the analogue meter with 30 and 100 % scale.
Page 13: Front Panel
Front panel Analog indication Zero potentiometer Span potentiometer Flow meter Needle valve 7 - 70 Nl/h Measuring range selector switch LED - heating control LED – alarm status Figure 3 Front panel PMA30 www.mc-techgroup.com PMA30 | 1.02.00...
Page 14: Option Process Pressure Compensation Type Pd (Without Sil Certification)
Option process pressure compensation type PD (without SIL certification) In case of barometric or process originated pressure variations, the PMA30 can be equipped with a special pressure compensation. Compensation can be carried out in a pressure range from 0.6 to 1.6 bar abs. Thereby errors in measurement caused by pressure variations can be eliminated.
Page 15: The Measuring Principle
The measuring principle Oxygen is a gas with a significant paramagnetic susceptibility. The molecules of oxygen are attracted much more strongly by a magnetic field than the molecules of other gases. The measuring principle shown in the following is benefitting from these characteristics of the oxygen. The great advantage of the paramagnetic measuring principle is the highly reduced cross sensitivity of the meas- urement to other components in the sample gas.
Page 16: Gas Flow Diagram Of The Analyzer Pma30
Every change of the oxygen concentration produces a linear proportional change of the compensation cur- rent and can be read directly in % O as oxygen value on the display . ) and the direct flow of the M&C measuring cell, an extremely Due to its very small stagnant volume (2 cm fast response time (T -time) of 1 second for a high gas flow can be realized.
Page 17: Installation
Installation The PMA30 is intended for stationary operation. In combination with a gas conditioning according to the requirements a long-lasting operability and a minimum of maintenance is guaranteed. The sample gas must be dust free and dry to prevent a contamination and condensation in the analyzer.
Page 18: Standard Gas Conditioning System
13.2 Standard gas conditioning system PMA 30  +5°C       Heated gas sample probe (e.g. probe SP2000-H)  Heated gas sample line (e.g. 4M4/6)  Sample gas cooler (e.g. ECM-1G)  Peristaltic pump or condensate collecting vessel (e.g. SR25.1 or TG-1) ...
Page 19: Analog Signal Output
1 Gas IN 1/8“ NPT female 2 Option purge gas connection 4/6 3 Gas OUT 1/8“ NPT female 4 D-Sub-connector 9-pole for signal outlet 5/6 Mains fuses (L and N) 7 Mains IN / connector plug 8 D-Sub-connector 25-pole for remote control and indication Figure 7 Back side PMA30 13.3.1...
Page 20: Description 0/4-20Ma Outlet
13.3.2 Description 0/4-20mA outlet • Every measuring range meets 0/4-20 mA (standard measuring ranges: 0-1 %; 0-3 %; 0-10 %; 0-30 %; 0-100 % O • Current range switchable (see chapter 13.3.3; 4-20 mA standard factory setting) • Galvanically isolated (internal power supply) •...
Page 21: Description 0-10 V Outlet
13.3.6 Description 0-10 V outlet • 0-10 V always correspond to 100 % O independent of the measuring range • For a load of > 100 KOhm • Linear from -0.5 V to 11 V General evaluation of the 0-10 V signal: Fault Low MB unterschreitung Messbereich...
Page 22: Remote Range Control And External Measuring Range Indication
13.3.8 Remote range control and External measuring range indication The 25-pole D-sub-connector X1 (see Figure 9) allows the connection for the remote range control. For re- lease of this remote range control the measuring range selection switch at the front panel of the PMA30 (see Figure 3, no.
Page 23: Preparations For Commissioning
Preparations for commissioning Before initial startup, all plant- and process-specific safety measures must be observed. It is mandatory for the operator to complete the enclosed risk assessment of the product. The gas exposure risk must be assessed by the operator with regard to the hazards posed by process and calibration gas and the setup at the installation site (e.g.
Page 24: Zero Calibration
16.1 Zero calibration The zero calibration of the analyzer happens with a O -free gas, e.g. Nitrogen (N ) 5.0. The following steps have to be carried out: 1. Connect a flexible PVC- or FEP-hose with the pressure reducer of the N -zero-gas bottle.
Page 25: Span Calibration
12. Shut off pressure outlet valve and bottle valve. 13. Disconnect hose connection from the analyzer. Zero calibration is finished. After zero calibration the span always has to be calibrated too. Note 16.2 Span calibration In case the oxygen concentration of the sample gas is below 30 % O , the calibration can be performed with dry air.
Page 26: Output Signal
9. Wait approximately 20 – 30 sec. until the indication has stabilized. 10. If necessary, adjust span accurately according to the check gas concentration with a screw driver at the span potentiometer 2 (Figure 3) in the front panel. In case of air e.g. to 20.9 % O 11.
Page 27: Measuring
Measuring For the first starting up at a new location, all steps in the chapters before have to be performed. By the requirements of precision, the interval of the new calibration can be carried out daily or weekly. The sample gas quantity should be adjusted corresponding to the requirements between 10 Nl/h and 60 Nl/h air. After choice of the desired measuring range the analyzer is ready for operation.
Page 28 Formula 20 °C [68 °F] 50 °C [122 °F] Methane -0.16 -0.17 Methanol -0.27 -0.31 Methylene chloride -1.00 -1.10 Neon +0.16 +0.17 n-octane -2.45 -2.70 Phenol -1.40 -1.54 Propane -0.77 -0.85 Propylene -0.57 -0.62 Propylene chloride -1.42 -1.44 Propylene oxide -0.90 -1.00 Oxygen...
Page 29 Example 2: Determination of the oxygen content of a gas mixture at 20 °C 1 vol% C (Ethane); 5 vol% O 40 vol% CO 54 vol% N Zero point calibration with nitrogen (N The cross sensitivity values of above table are based on 100 vol% of the respective gases. Therefore, a con- version must be made to the effective volume concentration.
Page 30 The rectified sum cross sensitivity with change of sign now can be used for the correction of the zero calibra- tion. In this case zero had to be adjusted at +0.1182 vol%. In case the cross sensitivities should be ignored in the above-mentioned example, this would result in a rel- ative error of approximately 2 %.
Page 31: Closing Down
Closing down In case of a short time closing down of the process control system, the analyzer should remain "ON". No further precautions are required. In case of a closing down of the analyzer for a longer period, it is recommended to flush the analyzer with dry and clean inert gas (eg.
Page 32: Removal Of The Measuring Cell
21.1 Removal of the measuring cell For dismounting the measuring cell, the following procedure is recommended: Dangerous voltage. before carrying out any maintenance or repair activities, take the analyzer and all external switching circuits in connection with the Warning analyzer off the mains! 1.
Page 33: Figure 10 Transmitter Unit
  Electrical connections meas. cell Gas outlet measuring cell   Gas inlet measuring cell Fastening screw for measuring cell   Heater element Transmitter board   Temperature cut out at 72 °C Temperature sensor Figure 10 Transmitter unit 8.
Page 34: Mechanical Zero Point Adjustment
In case there are minimally different positions of the dumbbells inside the measuring cells when mounting a new cell, it is absolutely necessary to adjust the zero point mechanically. The PMA30 housing can remain open for this purpose; 1. Fix earthing cable (green-yellow) of the transmitter unit; 2.
Page 35: Figure 11 Schematic View Of The Transmitter Unit
 IR LED  Temperature cut out (72 °C)  Sample gas heating coil  Fastening screw photocell  Heater element  Adjustment screw photocell  Measuring cell  Photocell Figure 11 Schematic view of the transmitter unit 1. Open the housing of the analyzer; 2.
Page 36: Trouble Shooting
Trouble shooting Error Possible reason Check/Repair No indication No supply voltage Check supply voltage according to type plate. Check whether mains cable is plugged in accurate. Check fine fuse in the low heat device socket. Check fine fuses F1, F2 (TR5) on main board (next to transformer) No sample gas Sample line or filter is...
Page 37: Proper Disposal Of The Device
Proper disposal of the device At the end of the life cycle of our products, it is important to take care of the appropriate disposal of obsolete electrical and non-electrical devices. To help protect our environment, please follow the rules and regulations of your country regarding recycling and waste management.
Page 38: Figure 12 Overview Risk Assessment
The product complies with the current regulations according to state-of-the-art science and technology. Nevertheless, not all sources of danger can be eliminated while observing technical protective measures. Therefore, the following risk assessment and the description of exposure hazards refer to the work steps mentioned above.
Page 39 Caution hot surfaces Risk rank group A The temperature inside the product can be higher than > 60 °C. The hot parts are shielded by mechanical devices. Before opening the products, they must be disconnected from the power supply and a cooling time of more than >...
Page 40: Appendix
Appendix 1. Safety manual according to SIL 2. Circuit diagram main board PMA30 3. Assembly diagram main board PMA30 4. Jumper-Settings, test points, plugs for main-, front- and extension board 5. Circuit diagram front board PMA30 6. Assembly diagram front board PMA30 7.
Page 41 Excluded are the options: 03A9535 Option: zero suppressing with pressure compensation, type SDPD for PMA30, pressure range: ±0,6 bar, wetted parts: SS, PVDF, Viton® Not with SIL-certification! 03A9530 Option: built-in electrical pressure compensation, type PD for PMA30, pressure range: ±0.6 bar, wetted parts: SS, PVDF, Viton®...
Page 42: Operating Conditions
Operating conditions The values for the SIL capability of the control unit in conjunction with the determined error rates are only valid if the following operating conditions are met: Ambient conditions: Temperature: -10 °C bis +45 °C Pressure: 0.9- 1.1 bar abs. Vibrations have to be avoided.
Page 43: Figure 13 Circuit Diagram Pma30 Main Board
Figure 13 Circuit diagram PMA30 main board www.mc-techgroup.com PMA30 | 1.02.00...
Page 44: Figure 14 Assembly Diagram Pma30 Main Board
LED alarm short-circuit Flow alarm max. Couple signal Measuring range selection switch Measuring range lower deviation Measuring range exceedance Low temperature alarm +15 V power alarm -15 V power alarm Excess temperature alarm Flow alarm min. LED alarm open Offset O2 2. Op.-level Temperature alarm Range overflow alarm set point 5V reference O2-signal 0-10 V range...
Page 45 PMA30 Main board Connections Test points Power In TP1 O in 2. op. level 0-5 V Temperature fuse TP2 Temperaturalarm Sollwert Temperature sensor TP3 GND Heating TP4 Temperature actual value Current-, voltage-, status signal TP5 O in 1. op. level Measuring range choice, indication, TP6 GND compensation...
Page 46 Jumper Setting JP1: Zero suppression 1: Supression OFF 2: Supression at 1 % range ON 3: Supression at 3 % range ON 4: Supression at 10 % range ON 5: Supression at 30 % range ON 6: Supression at 100 % range ON PMA30 Front board Connection Test points...
Page 47: Figure 15 Circuit Diagram Pma30 Front Board
Figure 15 Circuit diagram PMA30 front board www.mc-techgroup.com PMA30 | 1.02.00...
Page 48: Figure 16 Assembly Diagram Front Board Pma30
Figure 16 Assembly diagram front board PMA30 PMA30 | 1.02.00 www.mc-techgroup.com...
Page 49: Figure 17 Circuit Diagram Extension Board Pma30
Figure 17 Circuit diagram extension board PMA30 www.mc-techgroup.com PMA30 | 1.02.00...
Page 50: Figure 18 Assembly Diagram Extension Board Pma30
Span zero suppression Offset zero suppression Offset 0-5 V suppressed compensation Span 0-5 V suppressed compensation Span 0-5 V compensated Zero 0-5 V compensated Zero 0-10 V compensated Span 0-10 V compensated 5 V ref. Zero pressure measurement Span pressure measurement Figure 18 Assembly diagram extension board PMA30 PMA30 | 1.02.00...
Page 51: Figure 19 Connections Wall Mounting Housing Pma30
Figure 19 Connections wall mounting housing PMA30 www.mc-techgroup.com PMA30 | 1.02.00...
Page 52: Figure 20 Wall-Mount Housing (Version Since 05.2024) With Cable Glands
DN 4/6 M 20 Figure 20 Wall-mount housing (version since 05.2024) with cable glands PMA30 | 1.02.00 www.mc-techgroup.com...
Page 53 www.mc-techgroup.com PMA30 | 1.02.00...
Page 54 PMA30 | 1.02.00 www.mc-techgroup.com...

This manual is also suitable for:

Pma30/d Pma30/a/d