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Fluke Victoreen 943-227-15 Operator's Manual

Digital preamplifier for use with model 943-27 current mode beta detector
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Victoreen
Digital Preamplifier, Model 943-227-15,for use with
Model 943-27 Current Mode Beta Detector
Operator Manual
February 2008
Manual No. 943-227-15-1, Rev. 3
©2007, 2008 Fluke Corporation, All rights reserved. Printed in U.S.A.
All product names are trademarks of their respective companies

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Summary of Contents for Fluke Victoreen 943-227-15

  • Page 1 Digital Preamplifier, Model 943-227-15,for use with Model 943-27 Current Mode Beta Detector Operator Manual February 2008 Manual No. 943-227-15-1, Rev. 3 ©2007, 2008 Fluke Corporation, All rights reserved. Printed in U.S.A. All product names are trademarks of their respective companies...
  • Page 2 Fluke Biomedical 6045 Cochran Road Cleveland, Ohio 44139 440.498.2564 www.flukebiomedical.com...

  • Page 3: Table Of Contents

    Table of Contents Section 1: General Information ......................1-1 General Description ....................... 1-1 Application..........................1-1 Specifications ......................... 1-2 Auxiliary Equipment ....................... 1-6 Recommend Spare Parts....................... 1-6 Receiving Inspection ......................1-6 Storage........................... 1-7 Section 2: Theory of Operation......................2-1 Functional Description......................2-1 Main Circuit Boards........................
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  • Page 5: General Information

    1 mile, the Model 943-227-15VL, configured for Victoreen Loop communications is used. Table 1-1 is a list of available configurations and compatible 9XX series equipment. Please contact Fluke Biomedical Radiation Management Services for additional information.

  • Page 6: Specifications

    943-227-15 Digital Preamplifier Operator Manual Table 1-1. 943-227-15 Variations and Compatible Equipment Preamplifier Variations Application Detector Readout 943-227-15 Digital Transmission 943-27-31 Beta 942A-200C Digital Ratemeter Preamplifier Distances Detector, or Model 960 Digital Process Less than 50 feet Current Mode Control System Operation 943-227-15VL Digital Transmission...
  • Page 7 General Information Application Table 1-2. General Specifications for the 943-227-15 Digital Preamplifier Feature: Specification: Preamplifier Power + 15 v @ 20 mA DC current, 1E-12 to 1E-3 amperes from 943-27 Current Mode Beta Preamplifier Input Scintillation detector 943-227-15, RS232C; Preamplifier Output 943-227-15VL, Modified RS232C serial data for transmission distances up to 5,280 feet.
  • Page 8 943-227-15 Digital Preamplifier Operator Manual Table 1-3. Preamplifier Serial Interface Board 977-210-10M Switch Settings Switch Normal Switch Function Open Microprocessor Reset switch, momentary contact Not supplied SW3-1 OFF Selects 300 baud • 1/ON Selects 4800 baud (normal setting) SW3-2 OFF • (No function is implemented in the 977-210-10M) SW3-3 OFF Selects Rate Mode (normal) •...
  • Page 9 General Information Specifications Table 1-6. Field Electrical Connections, 943-227-15 and 943-227-15VL 943-227-15 943-27-15VL Connects To Connects To TB1- Description Description 977-210-10M 977-210-10M + VL, 15 J4-1 J3-1 XMIT J3-2 + TX J4-2 J3-3 - TX J4-3 J3-4 - VL J4-4 Not Used Not Used J3-5...

  • Page 10: Auxiliary Equipment

    1.6 Receiving Inspection Upon receipt of the unit: 1. Inspect the carton(s) and contents for damage. If damage is evident, file a claim with the carrier and notify the Fluke Biomedical Radiation Management Services Customer Service Department. Fluke Biomedical Radiation Management Service...

  • Page 11: Storage

    Spare Parts/Receiving Inspection 1.7 Storage Storage of Fluke Biomedical instruments must comply with Level B storage requirements as outlined in ANSI N45.2.2 (1972) Section 6.1.2(.2). The storage area shall comply with ANSI N45.2.2 (1972) Section 6.2 Storage Area, Paragraphs 6.2.1 through 6.2.5. Housekeeping shall conform to ANSI N45.2.3 (1972).
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  • Page 13: Theory Of Operation

    Theory of Operation Functional Description Section 2 Theory of Operation Functional Description The Model 943-227-15 Digital Preamplifier is an eight-decade, linear reading radiation. The preamplifier is sensitive to moisture and is mounted in a NEMA 4 sealed enclosure. The preamplifier box contains a desiccant package to remove moisture from the interior of the preamplifier.
  • Page 14 943-227-15 Digital Preamplifier Operator Manual 0/-12 Vdc 0 - 10 Vdc ALARM INTEGRATING EPROM OUTPUT ELECTROMETER ANALOG SWITCH MICROPROCESSOR SIGNAL CONTROL HIGH VOLTAGE ACIA POWER SUPPLY HIGH VOLTAGE Resistor DETECTOR ASSEMBLY VICO RS232 LOOP Resistor MICROPROCESSOR CONTROL SIGNAL Figure 2-1. Typical Detector Electronics Block Diagram Table 2-1.
  • Page 15 Theory of Operation Main Circuit Boards Table 2-2. Electrometer Control Bit Assignments Bit Position Description Gain = 1 Gain = 2 Gain = 4 Gain = 8 Gain = 16 Gain = 32 Gain = 64 Gain = 128 Unshort capacitor Short capacitor Digitize electrometer Digitize high voltage...

  • Page 16: 977-210-10M Interface Board

    943-227-15 Digital Preamplifier Operator Manual The following Test are provided on the 977-200-15M board: Table 2-4. 977-200-15M Test Points Test Point Function Electrometer Output Analog +5 VDC supply - 5 VDC supply Digital +5 VDC supply (From 977-210-10M) High Voltage Sense (Not Used) + 12 VDC supply (From 977-210-10M) DC Ground Programmable Gain Amplifier Output...

  • Page 17: Preamplifier Switch & Jumper Settings

    Theory of Operation Communications Victoreen Communications Loop – 943-227-15VL Communication between the detector preamplifier and the UDR or 960 controller may be performed via Victoreen loop, a serial asynchronous communications interface. The communication utilizes Victoreen protocol and is intended for use in electrically hostile environments where high noise immunity is required. Noise immunity is achieved using differential line driving, and electrically isolating the end of each transmit/receive pair with opto-isolators.
  • Page 18 943-227-15 Digital Preamplifier Operator Manual Table 2-8. Jumper Positions for Preamplifier Serial Interface Board 977-210-10M Jumper Normal Function Alternate Function Setting Setting JMP1 A to B B to C Enables RS232C Enables Victoreen Loop (normal) JMP2 Deleted, Not Used Deleted, Not Used Table 2-9.

  • Page 19: Operation

    Operation Installation Section 3 Operation 3.1 Installation Installation consists of mounting the equipment, making the required electrical connections, and entering the desired set points. CAUTION Remove all power prior to installing the Preamplifier. Preamplifier Mounting The preamplifier is a self-contained unit that is designed for mounting on a wall, or structurally sound surface, within 6 feet of the detector.

  • Page 20: Set-Up

    943-227-15 Digital Preamplifier Operator Manual NOTE The electrometer circuitry in the preamplifier is highly sensitive to moisture and physical damage. Use extreme care when the preamplifier case is opened as the high impedance electrometer circuitry is easily damaged. Do not leave the preamplifier enclosure in the open position for any extended period of time.
  • Page 21 943-227-15 Digital Preamplifier Operator Manual...

  • Page 22: Operation

    Operation Configuration 3.3 Operation Operation of the 943-227-15 Digital Preamplifier is automatic and is controlled by the Model 942A-200C Digital Ratemeter or Model 960 Digital Process Radiation monitoring system. Once the power to the controlling device is turned on, the preamplifier begins operation. No operator interaction is required. Refer to the instruction manual for the applicable controller, detector and the Model 942-200-80 Communications Option Board for further information.

  • Page 23: Configuration Functions

    943-227-15 Digital Preamplifier Operator Manual For UDR systems, the address of the 942-200-80 Communications board in the UDR must be set 4040 and the baud rate must be set to 4800 baud. If the wiring of the Communications option board to the P2 connector is suspected, a loop test can be performed as described in "Loop Test Mode".

  • Page 24: Set Point Error Codes

    Operation Configuration 3.5 Set Point Error Codes Failure of the 943-227-17 preamplifier may result in the following error codes being displayed on the controlling device: Code E0009 is normally used to identify a Loop communication failure. The error code may be due to a baud rate mismatch between the preamplifier and the UDR or 960 system communication board, a failure on either the preamplifier or UDR communication board.
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  • Page 26: Maintenance, Calibration And Troubleshooting

    Maintenance, Calibration and Troubleshooting Maintenance Section 4 Maintenance, Calibration and Troubleshooting 4.1 Maintenance The 943-227-15 Digital Preamplifier is designed to operate for extended periods of time with no scheduled maintenance required. Operation may be verified by periodically actuating the check source (provided with the detector and sampling assembly) and observing the response of the unit.

  • Page 27: Troubleshooting

    (Victoreen Loop Communications only). Specialized test equipment and firmware are required to adjust the auto-zero and PGA subsystems in the electrometer. If the test equipment and firmware is not available, the unit should be returned to Fluke Biomedical RMS for re-alignment.

  • Page 28: Appendix A: Connector Designations

    Appendix Connector Designations Appendix A Connector Designations A.1 CONNECTOR DESIGNATIONS, 943-227-15 and 943-227-15VL Table A-1. Field Electrical Connections, 943-227-15 and 943-227-15VL 943-227-15 943-27-15VL Connects To Connects To TB1- Description Description 977-210-10M 977-210-10M + VL, 15 J4-1 J3-1 XMIT J3-2 + TX J4-2 - TX J3-3...
  • Page 29 943-227-15 Digital Preamplifier Operator Manual A.2 SWITCH AND JUMPER POSITIONS, 943-227-15 and 943-227-15VL Table A-2. Preamplifier Serial Interface Board 977-210-10M Switch Settings Switch Normal Switch Function Open Microprocessor Reset switch, momentary contact Not supplied SW3-1 OFF Selects 300 baud • 1/ON Selects 4800 baud (normal setting) SW3-2 OFF •...

  • Page 30: Appendix B: Applicable Drawings

    Appendix Applicable Drawings Appendix B Applicable Drawings B.1 Applicable Drawings 943-227-15 and 943-227-15VL Drawing No. Description 943-227-15 Preamplifier Assembly, RS232 943-227-15VL Preamplifier Assembly, Victoreen Loop 943-227-15VL-M1 Preamplifier Assembly, Victoreen Loop, w/Conduit Hubs 977-210-10M Preamplifier HV/Interface Printed Circuit Board Assembly 977-210-13M Preamplifier Printed Circuit Board Schematic 977-200-15M Preamplifier Electrometer Board Assembly...
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  • Page 32: Appendix C Bill Of Materials

    Appendix Bill of Materials Appendix C Bill of Materials C.1 Bill of Materials- 943-227-15 and 943-227-15VL Part Number Description 943-227-15 Preamplifier Assembly, RS232 943-227-15VL Preamplifier Assembly, Victoreen Loop 943-227-15VL-M1 Preamplifier Assembly, Victoreen Loop, w/Conduit Hubs 977-210-10M Preamplifier HV/Interface Printed Circuit Board Assembly 977-200-15M Preamplifier Electrometer Board Assembly...
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  • Page 34: Appendix D: Cable Termination Instructions

    Appendix Cable Termination Instructions Appendix D Cable Termination Instructions D.1 Cable Termination Instructions The procedures and instructions provided in Appendix D are provided for reference in terminating the field cables to the Digital Preamplifier. A mating SHV connector is provided with the preamplifier. Ring lug terminals are to be provided by the user.
  • Page 35 943-227-15 Digital Preamplifier Operator Manual Detector Field Cable Preparation, 943-227-15VL-M1, Conduit Hub: Prior to terminating the cable, the field conduit must be run to the junction box, and the field cable pulled into the junction box. To prepare the cable for termination, a minimum of 7 inches of the cable outer jacket must be stripped off the cable.
  • Page 36 Appendix Cable Termination Instructions HV CONNECTOR NOTES (HV) The mating HV connector, P/N 30-92-1 (Kings 1705-14), may now be terminated per the applicable Kings data sheet attached LOCATION DOCUMENT DESCRIPTION 92-9105-A CP-400, Kings High Voltage Connector, (1705-1) Cabling SHV, male crimp contact Procedure, Trim Code pin (Use Tool KTH-100 with 441, 442...
  • Page 37 943-227-15 Digital Preamplifier Operator Manual...
  • Page 38 Appendix Cable Termination Instructions...
  • Page 39 943-227-15 Digital Preamplifier Operator Manual...
  • Page 40 Appendix Cable Termination Instructions...
  • Page 41 943-227-15 Digital Preamplifier Operator Manual...

  • Page 42: Appendix E: Modification Sheets/Engineering Instructions

    Appendix Modifications Appendix E Modification Sheets, Engineering Instructions E.1 Modification Sheets, Engineering Instructions Description 943-227-15VL-M1 Modification consists of replacing the standard 8in H x 10in W x 4in D Enclosure with a 8in H x 10in W x 6in D Enclosure and replacing the field cable “Seal Grip”...
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  • Page 45 Fluke Biomedical 6045 Cochran Road Cleveland, Ohio 44139 440.498.2564 www.flukebiomedical.com...

This manual is also suitable for:

Victoreen 943-27

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