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107876-P1

Rev C, 8/96

Instruction Manual

MKS Baratron

®

Type 223B

Pressure Transducer

Six Shattuck Road
Andover, MA  01810-2449
(800) 227-8766 or (978) 975-2350

Fax:  (978) 975-0093

E-mail:  [email protected]

Web site:  http://www.mksinst.com

Summary of Contents for Baratron 223B

Page 1: ...Rev C 8 96 Instruction Manual MKS Baratron Type 223B Pressure Transducer Six Shattuck Road Andover MA 01810 2449 800 227 8766 or 978 975 2350 Fax 978 975 0093 E mail mks mksinst com Web site http www mksinst com ...

Page 2: ...er before returning any equipment covered by this warranty which is asserted to be defective by the purchaser shall make specific written arrangements with respect to the responsibility for shipping the equipment and handling any other incidental charges with the MKS sales representative or distributor from which the equipment was purchased or in the case of a direct purchase from MKS with the MKS...

Page 3: ...107876 P1 Rev C 8 96 MKS Baratron Type 223B Pressure Transducer ...

Page 4: ...eans electronic or mechanical including photocopying and recording or by any information storage or retrieval system except as may be expressly permitted in writing by MKS Instruments Inc Baratron is a registered trademark of MKS Instruments Inc Andover MA Inconel is a registered trademark of Inco Alloys International Inc Huntington WV ...

Page 5: ... 5 Unpacking Checklist 5 Product Location and Requirements 6 Operating Environmental Requirements 6 Safety Conditions 6 Setup 7 Dimensions 7 Mounting Instructions 8 Electrical Connections and Cables 8 Chapter Three Overview 11 Circuit Description 11 Chapter Four Operation 13 How To Adjust the Zero Pot 13 Chapter Five Repair 15 General Information 15 Appendix A Product Specifications 17 Appendix B ...

Page 6: ...Table of Contents iv ...

Page 7: ...igures List of Tables v List of Figures Figure 1 Dimensions of a Type 223 Transducer 7 Figure 2 Electrical Connections 9 Figure 3 Schematic of a Type 223 Transducer 12 List of Tables Table 1 Cable Connections 8 ...

Page 8: ...List of Figures List of Tables vi ...

Page 9: ... used is compatible with sealing materials PURGE THE INSTRUMENT After installing the unit or before its removal from a system be sure to purge the unit completely with a clean dry gas to eliminate all traces of the previously used flow material USE PROPER PROCEDURES WHEN PURGING This instrument must be purged under a ventilation hood and gloves must be worn to protect personnel DO NOT OPERATE IN E...

Page 10: ...e Contamination such as dust dirt lint glass chips and metal chips may permanently damage the unit Definitions of WARNING CAUTION and NOTE messages used throughout the manual Warning The WARNING sign denotes a hazard It calls attention to a procedure practice condition or the like which if not correctly performed or adhered to could result in injury to personnel Caution The CAUTION sign denotes a ...

Page 11: ...10 100 1000 Torr or 1 10 100 1000 cm H2O The Type 223 can be powered from 15 or 12 Volt supplies and is composed of an Inconel sensor printed circuit board and cover The sensor is made of three parts 1 A taut metal diaphragm supported by thick walled Inconel rings 2 A dimensionally stable ceramic electrode which senses the diaphragm s deflection 3 A reference cover through which a glass to metal f...

Page 12: ... transducer Appendix A Product Specifications lists the specifications of the instrument Appendix B Model Code Explanation describes the instrument s model code Customer Support Standard maintenance and repair services are available at all of our regional MKS Calibration and Service Centers listed on the back cover In addition MKS accepts the instruments of other manufacturers for recalibration us...

Page 13: ...ard any packing materials until you have completed your inspection and are sure the unit arrived safely If you find any damage notify your carrier and MKS immediately If it is necessary to return the unit to MKS obtain an ERA Number Equipment Return Authorization Number from the MKS Service Center before shipping Please refer to the inside of the back cover of this manual for a list of MKS Calibra...

Page 14: ...ntal Requirements Ambient Operating Temperature 0 C to 50 C 32 F to 122 F Main supply voltage fluctuations must not exceed 10 of the nominal voltage Ventilation requirements include sufficient air circulation Connect the power cord into a grounded outlet Safety Conditions The 223 transducer poses no safety risk under the following environmental conditions Altitude up to 2000 m Maximum relative hum...

Page 15: ...Chapter Two Installation Setup 7 Setup Dimensions Note All dimensions are listed in inches with millimeters referenced in parentheses Figure 1 Dimensions of a Type 223 Transducer ...

Page 16: ...MKS supplied readouts such as the type 146 651 652 or 660 units Use cable CB473 1 to connect the 223 transducer to MKS digital type readouts such as the type PDR C 1C 2C PDR 5B or the PDR D 1 units Connections are made according to Table 1 Cable Connections Type 223 Cable Wire Color MKS Readout Connection 15 Green 15 15 White 15 COMMON Black small paired with green Black small paired with red P CO...

Page 17: ... the sensor ground input ports to avoid any possible ground loops which can cause noise in the system 2 Power requirements are less than 25 mA at either 12 or 15 Volt supplies Actually the supply can be any voltage from 11 to 18 Volts The output may be loaded with 10K ohms or greater Figure 2 Electrical Connections ...

Page 18: ...Setup Chapter Two Installation 10 This page intentionally left blank ...

Page 19: ...e is now summed with a negative zeroing voltage drived from U4B U4A establishes the output gain allowing the transdcuer to output a precise 0 to 1 VDC Linearizing is implemented using a unique feature of an LM331 U2 The output of pin 2 of U2 provides a precision reference voltage which is used to zero the output of U3A by adjusting the gain of UB4 However the transfer charactersistic of U2 is adju...

Page 20: ...Circuit Description Chapter Three Overview 12 Figure 3 Schematic of a Type 223 Transducer ...

Page 21: ...by closing the cross port valve and opening the isolating valves Use of these valves makes it possible to remove the sensor from the system while maintaining system pressure integrity Other than zero adjustment recalibration of the instrument should not be undertaken as the span and linearity pots interact Consult the factory if the calibration is out of specification Contamination moisture and di...

Page 22: ...How To Adjust the Zero Pot Chapter Four Operation 14 This page intentionally left blank ...

Page 23: ... damage should be reported to the carrier and MKS Instruments immediately If it is necessary to return the unit to MKS obtain an ERA Equipment Return Authorization number from a MKS Service Center before shipping Please refer to the inside back cover of this manual for a list of MKS Calibration and Service Centers Periodically check for wear on the cables and inspect the enclosure for visible sign...

Page 24: ...General Information Chapter Five Repair 16 This page intentionally left blank ...

Page 25: ...00 inH2O3 Installation Category II according to EN 61010 1 Materials Exposed to Gases PX side PR side Inconel Inconel ceramic palladium stainless steel glass Maximum Line Pressure 40 psig 275 kPa Maximum Overpressure 120 of F S or 20 psi 140 kPa whichever is greater Output4 For 1 10 100 1000 mmHg or cmH2O For 0 1 0 25 0 5 5 50 500 inH2O 0 to 1 VDC into 10K ohm load 0 to 5 VDC into 10K ohm load Pol...

Page 26: ...nts Zero For 0 5 of F S accuracy For 0 3 of F S accuracy For 0 3 of Rdg accuracy Span 0 1 of F S C 0 05 of F S C 0 05 of F S C 0 04 of Rdg C Volume PX side PR side 1 3 cc 9 8 cc Due to continuing research and development activities these product specifications are subject to change without notice ...

Page 27: ... the model code when you order the unit The model code is identified as follows 223B D XXXXX Y Z C where Type Number Full Scale Range Fittings Accuracy Calibration Z XXXXX Y 223B Sensor Type D C Type Number 223B This designates the model number of the instrument Sensor Type D This designates that the 223 unit is a differential pressure gauge ...

Page 28: ... a single letter code Ordering Code 3 16 OD 4 6 mm Tubulation A Accuracy Z Three specifications for accuracy are available designated by a single letter code Ordering Code Standard 0 5 of F S bidirectional or unidirectional A Optional 0 3 of F S bidirectional or unidirectional B 0 3 of Rdg unidirectional only C Calibration C Two types of calibrations are available designated by a single letter cod...

Page 29: ... 16 diameter tubulation fittings standard accuracy of 0 5 of F S and bidirectional calibration the product code is 223B D 00010 A A B To order the Type 223 differential pressure transducer with a 5 in H2O full scale range 3 16 diameter tubulation fittings the optional accuracy of 0 3 of Reading with unidirectional calibration the product code is 223B D 00010 A C U ...

Page 30: ...Model Code Appendix B Model Code Explanation 22 This page intentionally left blank ...

Page 31: ...structions 8 pollution degree 6 safety conditions 6 Installation Category 6 M Maintenance 13 Manual organization 4 Messages definitions of 2 Model code 17 O Operation environmental requirements 6 zero pot adjustment 11 P Pollution Degree 6 R Returning the product 4 5 S Safety conditions 6 Safety procedures and precautions 2 Specifications 15 T Temperature 6 ...

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