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- Page 1 107876-P1 Rev C, 8/96 Instruction Manual ® MKS Baratron Type 223B Pressure Transducer Six Shattuck Road Fax: (978) 975-0093 Andover, MA 01810-2449 E-mail: mks@mksinst.com (800) 227-8766 or (978) 975-2350 Web site: http://www.mksinst.com...
- Page 2 MKS Instruments, Inc. (MKS) warrants that the equipment described above (the “equipment”) manufactured by MKS shall be free from defects in materials and workmanship for a period of one year from date of shipment and will for a period of two years from the date of shipment, correctly perform all date-related operations, including...
- Page 3 107876-P1 Rev C, 8/96 MKS Baratron Type 223B Pressure Transducer...
- Page 4 All rights reserved. No part of this work may be reproduced or transmitted in any form or by any means, 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.
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Page 5: Table Of Contents
Table of Contents Table of Contents Safety Procedures and Precautions..................1 Chapter One: General Information..................3 Introduction ....................... 3 How This Manual is Organized.................. 4 Customer Support ...................... 4 Chapter Two: Installation ...................... 5 How To Unpack the Type 223 Unit ................5 Unpacking Checklist .................. - Page 6 Table of Contents...
- Page 7 List of Figures List of Tables 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...
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Page 9: Safety Procedures And Precautions
DO NOT SUBSTITUTE PARTS OR MODIFY INSTRUMENT Do not install substitute parts or perform any unauthorized modification to the instrument. Return the instrument to an MKS Calibration and Service Center for service and repair to ensure that all safety features are maintained. - Page 10 Safety Procedures and Precautions OPERATE AT SAFE INLET PRESSURES This unit should never be operated at pressures higher than the rated maximum pressure (refer to the product specifications for the maximum allowable pressure). INSTALL A SUITABLE BURST DISC When operating from a pressurized gas source, a suitable burst disc should be installed in the vacuum system to prevent system explosion should the system pressure rise.
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Page 11: Chapter One: General Information
Chapter One: General Information Introduction Chapter One: General Information Introduction The Type 223B Pressure Transducer measures differential pressure according to its full scale range and provides a 0 to ±1 Volt signal which is linear with pressure. Optionally the output can be 0 to ±5 Volt. -
Page 12: How This Manual Is Organized
Calibration and Service Center before shipping. The ERA Number expedites handling and ensures proper servicing of your instrument. Please refer to the inside of the back cover of this manual for a list of MKS Calibration and Service Centers. Warning All returns to MKS Instruments must be free of harmful, corrosive, radioactive, or toxic materials. -
Page 13: Chapter Two: Installation
Chapter Two: Installation How To Unpack the Type 223 Unit MKS has carefully packed the Type 223 unit so that it will reach you in perfect operating order. Upon receiving the unit, however, you should check for defects, cracks, broken connectors, etc., to be certain that damage has not occurred during shipment. -
Page 14: Product Location And Requirements
Product Location and Requirements Chapter Two: Installation Product Location and Requirements The Type 223 unit meets the following criteria: • POLLUTION DEGREE 2 in accordance with IEC 664 • Transient overvoltages according to INSTALLATION CATEGORY II Operating Environmental Requirements • Ambient Operating Temperature: 0 °C to 50 °C (32°F to 122 °F) •... -
Page 15: Setup
Chapter Two: Installation Setup Setup Dimensions Note All dimensions are listed in inches with millimeters referenced in parentheses. Figure 1: Dimensions of a Type 223 Transducer... -
Page 16: Mounting Instructions
Use cable CB112-2 to connect the 223 transducer to 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. -
Page 17: Figure 2: Electrical Connections
Chapter Two: Installation Setup Note 1. The grounds of any external power supply AND readout should be the same as 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. - Page 18 Setup Chapter Two: Installation This page intentionally left blank.
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Page 19: Chapter Three: Overview
Chapter Three: Overview Circuit Description Chapter Three: Overview Circuit Description Refer to Figure 3, page 12. The capacitance of the single electrode sensor, which increases with pressure at the P port, is part of a multivibrator circuit consisting of U1, Cx, R1, R2, R3, R4, and R5. R1 to R5 are temperature stable devices leaving Cx as the major frequency determining component. -
Page 20: Figure 3: Schematic Of A Type 223 Transducer
Circuit Description Chapter Three: Overview Figure 3: Schematic of a Type 223 Transducer... -
Page 21: Chapter Four: Operation
Chapter Four: Operation How To Adjust the Zero Pot Chapter Four: Operation How To Adjust the Zero Pot For correct operation, the only adjustment necessary will be trimming of the zero pot, whose location is clearly marked on the transducer cover. Zeroing must be done only when one is assured of zero differential pressure across the sensor. - Page 22 How To Adjust the Zero Pot Chapter Four: Operation This page intentionally left blank.
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Page 23: Chapter Five: Repair
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. - Page 24 General Information Chapter Five: Repair This page intentionally left blank.
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Page 25: Appendix A: Product Specifications
Appendix A: Product Specifications Specifications Appendix A: Product Specifications Specifications Accuracy 0.5% of F.S., bidirectional or unidirectional 0.3% of F.S., bidirectional or unidirectional 0.3% of Rdg., unidirectional only Ambient Operating Temperature 0° to 50° C (32° to 122° F) EMC Directive 89/336/EEC CE Mark Compliance Electrical Connector Screw terminal barrier strip... - Page 26 Specifications Appendix A: Product Specifications Resolution 0.01% of F.S. Temperature Coefficients Zero - For 0.5% of F.S. accuracy 0.1% of F.S./°C For 0.3% of F.S. accuracy 0.05% of F.S./°C For 0.3% of Rdg. accuracy 0.05% of F.S./°C Span 0.04% of Rdg./°C Volume side 1.3 cc...
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Page 27: Appendix B: Model Code Explanation
Appendix B: Model Code Explanation Model Code Appendix B: Model Code Explanation Model Code The options of your transducer are identified in the model code when you order the unit. The model code is identified as follows: 223B D - XXXXX Y Z C where: XXXXX 223B... - Page 28 Model Code Appendix B: Model Code Explanation Full Scale Range (XXXXX) The full scale range is indicated by a five digit code. Specify the required engineering unit when you place your order. Ordering Code mmHg in H 000.2 00001 00010 00100 1000 1000...
- Page 29 Appendix B: Model Code Explanation Model Code How To Order a Type 223 Unit To order the Type 223 differential pressure transducer with a 10 mmHg full scale range, 3/16” 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 H...
- Page 30 Model Code Appendix B: Model Code Explanation This page intentionally left blank.
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Page 31: Index
Index Index Pollution Degree, 6 Cables, 8 Connections cable, 8 Returning the product, 4, 5 electrical, 8, 10 Customer support, 4 Safety conditions, 6 Safety procedures and precautions, 2 Dimensions, 7 Specifications, 15 Installation Temperature, 6 checklist, 5 installation category, 6 mounting instructions, 8 pollution degree, 6 safety conditions, 6...
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