Instruction/ maintenance manual of the product 943-27 Fluke
Go to page of 45
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.
Fluke Biomedical 6045 Cochran Road Cleveland, Ohio 44139 440.498.2564 www.flukebiomedical.com.
Table of Contents Section 1: General Information ........................................................................................................... .. 1-1 1.1 General Description ...............................................................
(Blank page).
General Information General Description 1 1- 1 Section 1 General Information 1.1 General Description The Victoreen ® Model 94 3-227-15 Digital Preamplif ier, is designed to operate with the Model 943.
943-227-15 Digital Preamplifier Operator Manual 1- 2 Table 1-1. 943-227-15 Variations a nd Compatible Equipment Preamplifier Variations Application Detector Readout 943-227-15 Digital Preamplifier Tra.
General Information Application 1 1-3 Table 1-2. General Specifications for the 943-227-15 Digital Preamplifier Feature: Specification: Preamplifier Power + 15 v @ 20 mA Preamplifier Input DC current,.
943-227-15 Digital Preamplifier Operator Manual 1-4 Table 1-3. Preamplifier Serial Interface Board 977 -210 -10M Switch Settings Switch Normal Op. Switch Function SW1 Open Microprocessor Reset switch,.
General Information Specifications 1 1- 5 Table 1-6. Field Electrical Con nections, 943 -227-15 and 943-227-15VL 943-227-15 943-27-15VL TB1- Description Connects To 977-210-10M Description Connects To.
943-227-15 Digital Preamplifier Operator Manual 1-6 1.4 Auxiliary Equipment Model Description None 1.5 Recommended Spare Parts Table 1-9. Recommended Spare Parts List for the Model 943-227-15 Digital .
General Information Spare Parts/Receivi ng Inspection 1 1- 7 1.7 Storage Storage of Fluke Biomedi cal instruments must comply with Level B storage requirement s as outlined in ANSI N45.2.2 (1972) Section 6.1.2 (.2 ). The storage area shall comply with ANSI N45.
( Blank Page).
Theory of Operation Functional Description 2 2-1 Section 2 Theory of Operation 2.1 Functional Description The Model 943-227-15 Digital Preamplifi er is an eight- decade, linear reading radiation. The preamplifier is sensitive to moisture and is mounted in a NEMA 4 sealed enclo s ure.
943-227-15 Digital Preamplifier Operator Manual 2-2 INTEGRATING ELECTROMETER PGA ALARM OUTPUT DAC EPROM ANALOG SWITCH ADC ACIA HIGH VOLTAGE POWER SUPPLY RS232 VICO LOOP MICROPROCESSOR CONTROL SIGNAL HIGH VOLTAGE 0 - 10 Vdc 0/-12 Vdc MICROPROCESSOR CONTROL Resistor Resistor DETECTOR ASSEMBLY +VL +TX -TX +RX -RX -VL SIGNAL Figure 2-1.
Theory of Operation Main Circuit Boards 2 2-3 Table 2-2. Electrometer Control Bit Assignments Bit Position 7 6 5 4 3 2 1 0 Description X X X X X 0 0 0 Gain = 1 X X X X X 0 0 1 Gain = 2 X X X X X 0 1 0.
943-227-15 Digital Preamplifier Operator Manual 2-4 The following Test are prov ided on the 977-200-15M board: Table 2-4. 977-200-15M Test Points Test Point Function TP1 Electrometer Output TP2 Analog.
Theory of Operation Communications 2 2-5 Victoreen Communications Loop – 943-227-15VL Communication between t he detector preamplifier and the UDR or 960 controll er may be performed via Victoreen loop, a serial asynchronous communications interface.
943-227-15 Digital Preamplifier Operator Manual 2-6 Table 2-8. Jumper Positions for Pream plifier Serial Interface Board 977-210-10M Jumper Normal Setting Function Alternate Setting Function JMP1 A to B Enables Victoreen Loop (normal) B to C Enables RS232C JMP2 N/A Deleted, Not Used N/A Deleted, Not Used Table 2-9.
Operation Installation 3 3-1 Section 3 Operation 3.1 Installation Installation consists of mounting the equi pment, making the required electrical co nnections, and entering the desired set points. CAUTION Remove all power prior to installing the Preamplifier.
943-227-15 Digital Preamplifier Operator Manual 3-2 NOTE The electrometer circuitry in the preamplifier is highl y sensitive to moisture and physical damage. Use extreme care when the preamplifier case is opened as the high impedance electrometer circuitry is easily damaged.
943-227-15 Digital Preamplifier Operator Manual 3-3.
Operation Configuration 3 3-4 3.3 Operation Operation of the 943-227-15 Di gital Preamplifier is automatic and is controlled by the Mod el 942A-200C Digital Ratemeter or Model 9 60 Digital Process Radi ation monitoring system . Once the power to the controlling device is turned on, the prea mplifier begins operation.
943-227-15 Digital Preamplifier Operator Manual 3-5 For UDR systems, the address of the 942-200-80 Co mmuni cations board in the UDR must be set 404 0 and the baud rate must be set to 4800 baud.
Operation Configuration 3 3-6 3.5 Set Point Error Codes Failure of the 943-227-17 pre amplifier may result in the following error code s being displayed on th e controlling device: Code E0009 is normall y used to identify a Loop co mmunication failure.
(Blank page).
Maintenance, Calibration and Troubleshooting Maintenance 4 4-1 Section 4 Maintenance, Calibration and Troubleshooting 4.1 Maintenance The 943-227-15 Digital P reamplifier is designed to operate for extend ed periods of time with no scheduled maintenance requi red.
943-227-15 Digital Preamplifier Operator Manual 4-2 4.3 Troubleshooting WARNING Extreme care must be used when troubleshooting a system that has power applied. All standard troubleshooting precautions apply. WARNING Once a problem has been located, remove all power before continuing with the repair.
Appendix Connector Designations A A-1 Appendix A Connector Designations A.1 CONNECTOR DESIGNATIONS, 943-227-15 and 943-227-15VL Table A-1. Field Electrical Con nections, 943-2 27-15 and 943-227-15VL 9.
943-227-15 Digital Preamplifier Operator Manual A-2 A.2 SWITCH AND JUMPER POSITIONS, 943-227-15 and 943-227-15VL Table A-2. Preamplifier Serial Interfa ce Boa rd 97 7 -210-10M Switch Settings Switch Normal Op.
Appendix Applicable Drawings B B-1 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 Prea.
(Blank page).
Appendix Bill of Materials C C-1 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 Preamplifi.
(Blank page).
Appendix Cable Termination Instructi ons D D-1 Appendix D Cable Termination Instructions D.1 Cable Termination Instructions The procedures and in structions provided in Ap pendix D are provided fo r reference in termin ating the field cables to the Digital Preamplifier.
943-227-15 Digital Preamplifier Operator Manual D-2 Detector Field Cable Preparati on, 943-227-15VL-M1, Conduit Hub: Prior to terminating the cable, the field con duit must be run to the junction box, and the field cable pull ed into the junction box.
Appendix Cable Termination Instructi ons D D-3 HV CONNECTOR NOTES (HV) The mating HV connector, P/N 30-92-1 (Kings 1 705-1 4), may now be terminated per the applicable Kings data sheet attached LOCATI.
943-227-15 Digital Preamplifier Operator Manual D-4.
Appendix Cable Termination Instructi ons D D-5.
943-227-15 Digital Preamplifier Operator Manual D-6.
Appendix Cable Termination Instructi ons D D-7.
943-227-15 Digital Preamplifier Operator Manual D-8.
Appendix Modifications E E-1 Appendix E Modification Sheets, Engineering Instructions E.1 Modification Sheets, Engineering Instructions P / N D e s c r i p t i o n 943-227-15VL-M1 Modification consist.
(Blank page).
(Blank page).
Fluke Biomedical 6045 Cochran Road Cleveland, Ohio 44139 440.498.2564 www.flukebiomedical.com.
An important point after buying a device Fluke 943-27 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Fluke 943-27 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Fluke 943-27 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Fluke 943-27 you will learn all the available features of the product, as well as information on its operation. The information that you get Fluke 943-27 will certainly help you make a decision on the purchase.
If you already are a holder of Fluke 943-27, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Fluke 943-27.
However, one of the most important roles played by the user manual is to help in solving problems with Fluke 943-27. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Fluke 943-27 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
