M&C PMA Series Instruction Manual
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Summary of Contents for M&C PMA Series
- Page 1 Oxygen Analyzer Series PMA ® PMA 45K1 Instruction Manual Version 1.00.01...
- Page 2 Dear customer, Thank you for buying our product. In this instruction manual you will find all necessary information about this M&C product. The information in the instruction 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.
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Page 3: Table Of Contents
Content General information ........................4 Declaration of conformity ......................4 Safety instructions........................5 Warranty ............................5 Used terms and signal indications .................... 6 Introduction ..........................7 Serial number ........................7 Power supply ......................... 7 Application ..........................7 Technical data ..........................8 Description .......................... -
Page 4: 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 operating manual has been examined before delivery and left our works in perfect condition related to safety regulations. -
Page 5: Safety Instructions
SAFETY INSTRUCTIONS Please take care of the following basic safety procedures when mounting, starting up or oper- ating this equipment: Read this operating manual before starting up and use of the equipment. The information and warn- ings 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 currently in force. -
Page 6: Used Terms And Signal Indications
USED TERMS AND SIGNAL INDICATIONS This means that death, severe physical injuries and/or important material damages will occur in case the respective safety measures are not fulfilled. D AN G E R ! This means that death, severe physical injuries and/or important material damages may occur in case the respective safety measures are not fulfilled. -
Page 7: Introduction
INTRODUCTION The manual on hand describes the operating instructions for the stationary oxygen analyzer PMA 45K1 as applied within the industry. SERIAL NUMBER The type plate with the serial number is on the left side of the of the analyzer housing. Whenever you call M&C regarding questions or orders for the spares, please give us the serial number of your PMA 45K1. -
Page 8: Technical Data
TECHNICAL DATA Oxygen Analyzer Series PMA Version PMA 45K1 heated oxygen analyzer in aluminium cast hous- ® 05A4060 : PMA 45 K1, power supply 230 V 50 Hz Part-No. 05A4060a :PMA 45 K1, power supply 115 V 60 Hz Measuring ranges 2 measuring ranges selectable internally: 0-1, 0-2,5, 0-5, 0-10 and 0- 25 vol% O linear and position EXTERN... -
Page 9: Description
DESCRIPTION The core of the PMA 45K1 is the patented magneto dynamic oxygen measuring cell. The measuring principle is one of the most precise methods for the volumetric determination of the oxygen content in the measuring range of 0-100 vol% O The oxygen analyzer PMA 45K1 is designed for the stationary use and can also be applied in nuclear installations. -
Page 10: Figure 2 Pma 45K1
Figure 2 PMA 45K1 An inspection window in the housing 1 of the analyzer makes it possible to control the measuring val- ue display 2, the LEDs 6 (status alarm) and 7 (heating regulation) as well as the span LEDs 11 and All operating devices are accessible from outside and guarantee a simple and user-friendly handling for calibration as well as for the measuring range switch over. -
Page 11: Measuring Principle
The standard PMA 45K1 is equipped with a collective alarm output. This is a potential-free changeo- ver contact in “safety-first position”. The capacity is 110 mA at 24 V. The following status indications are signalized: Light source defective, Measuring cell uncoupled, Flow alarm <10 / >70 Nl/h , Error control of power supply unit, Power supply failure,... -
Page 12: Gas Flow Chart
The measuring cell consists of two nitrogen-filled spheres which are arranged in the form of a dumbbell. In the dumbbell’s central point of rotation, a small mirror is placed. The dumbbell is sur- rounded by a wire coil needed for the compensation procedure. The described system is fixed rota- tionally symmetrical inside a glass tube via a tightening strap out of platinum ... -
Page 13: Receipt Of Goods
The sample gas arrives in the measuring cell 2 via the inlet fitting. It is very important to protect the measuring cell 2 against liquid and dust particles. This is the reason why the externally mounted upstream gas conditioning system must be equipped with a fine filter of at least 2 micron porosity (e.g. -
Page 14: Power Supply Connections
POWER SUPPLY CONNECTIONS 14.1 SAMPLE GAS INLET AND OUTLET Sample gas inlet and outlet (8, see figure 2) are placed on the lower side of the analyzer. These are 1/4“ NPT i threads. When fastening the screw connection, hold up at the back side with a respective spanner! N O T E ! It is recommended to make a leak test afterwards. -
Page 15: Determination Of The Two Measuring Ranges To Be Selected On The Instrument
Figure 5 Electrical connections PMA 45K1 14.3 DETERMINATION OF THE TWO MEASURING RANGES TO BE SELECTED ON THE INSTRUMENT In order to minimize operating errors, the PMA45K1 provides the possibility to determine two measur- ing ranges that may then be selected via a switch on the instrument. The selection of measuring range 1 and 2 is made via two jumpers on the below illustrated plate. -
Page 16: Starting Up
Figure 6 Determination of measuring range via jumpers STARTING UP The following steps have to be done when starting up the analyzer: • Before switching on the main switch, check whether the electrical connections and the gas connec- tions have been executed correctly. The tension as indicated on the type plate must correspond to the power supply. -
Page 17: Calibration
CALIBRATION The preciseness of an analyzer depends to an important extent on its calibration. Before executing a calibration, it must be assured that the calibration conditions correspond to the conditions during the measurements. The flow quantity and the barometric pressure conditions must be constant. N O T E ! Under these conditions, a calibration of the analyzer becomes necessary nearly once a week in order to keep the exactness. - Page 18 When analysing a gas mixture, the single components have to be checked whether there are cross sensitivities, and these have to be con- sidered during the zero point calibration (see chapter 16.1.1 and 16.1.2). N O T E ! Close the pressure controller output valve and the cylinder valve. •...
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Page 19: Cross Sensitivities
16.1.1 CROSS SENSITIVITIES The following list shows the cross sensitivities of the most important gases at 20 °C and 50 °C. All val- ues refer to a zero point calibration with N and a final value calibration with 100 vol% O . -
Page 20: Consideration Of Cross Sensitivities
16.1.2 CONSIDERATION OF CROSS SENSITIVITIES The selectivity of the above mentioned measuring principle is based on the high susceptibility of oxy- gen to other gases (see table). The following examples shall show how cross sensitivities can be considered for the zero calibration. Example 1: Determination of the rest content of oxygen in a 100 % carbon dioxide ) protective atmosphere at 20 °C... -
Page 21: Sensitivity Adjustment
The correction factor is calculated as follows: Correction factor = (100 – O -concentration) The correction factor is the following: = 1.0526 (100 – 5) For the gas mixture the rectified sum cross sensitivity then is calculated in good approximation: 1.0526 x -0.1123 Vol.% = -0.1182 Vol.% The rectified sum cross sensitivity with change of sign now can be used for the correction of the zero calibration. - Page 22 Always calibrate with the gas quantity that is used for measurement. N O T E ! Wait approx. 20 - 30 seconds, until the indication is stable. • If necessary, adjust in the front of the sensitivity potentiometer (3, see figure 2) by means •...
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Page 23: Measuring
MEASURING For the first starting up at a new location, all before mentioned steps have to be performed. The requirements of precision determine the interval of the new calibration. After having selected the desired measuring range, the analyzer is ready for measurement. The sample gas must be free from all liquid or solid particles, i.e. -
Page 24: Annexe
Thanks to the physical measuring principle and the construction of the analyzer, no intensive and complex maintenance works are required. The preceding components of the sample gas conditioning unit are to be maintained according to the respective operating manuals. The calibration of zero point and measuring range final value are to be executed with the respective test gases according to description.
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