Instruction/ maintenance manual of the product 875 Fluke
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Victoreen ® 875 High Range Containment Monitor Operators Manual February 2005 Manual No. 877-1-1 Rev. 9 © 2004, 2005 Fluke Corporat i on, All rights reserved .
Fluke Biomedical Radiation Management Services 6045 Cochran Road Cleveland, Ohio 44139 440.498.2564 120 Andrews Road Hicksville, New York 1180 1 516.870.
i Table of Contents Section 1: Introductio n ................................................................................................ 1-1 1.1 General De scription ................................................................................
ii Appendix A: Calibration and Test Procedures .............................................................. A-1 A.1 Calibration Procedures ................................................................................ A-1 A.2 Test Proc edures ....
Introduction General Description 1 1-1 Section 1 Introduction 1.1 General Description Containment Monitor 875 The 875 Containment Monitor has been qualified for use in Nuclear Safety related applications. Qualification Test Reports, 950.301, 950.308A, and 950.
Victoreen 875 Operators Manual 1-2 Hermetic Integrity 1E10-5 cm 3 of helium per second @ one standard atmosphere Chamber Fill Gas Nitrogen/helium (2%) at at mospheric pressure Dimensions (W x H x D) with Mounting Bracket 9.25 x 12.5 x 10.06 in (234.95 x 317.
Introduction Specifications 1 1-3 Relative Humidity (Storage) : 0 to 95% (non- condensatio n) Relative Humidity (Operating) : 0 to 90% (non- condensatio n) Irradiation: 3.
Victoreen 875 Operators Manual 1-4 Pull Box Assembly (878-12-5) The 878-12-5 Pull Box Assembly is desi gned to allow for thermal expansion of the detector cables and to provide a service loop. Various optional pull-bo x configurations are avail able per Table 1-1.
Introduction Equipment Overview 1 1-5 Figure 1-1. High-Range Containment Monitor 87 5.
Victoreen 875 Operators Manual 1-6 Figure 1-2. Typical Energy Respon se Curve – Detector 877-1.
Introduction Equipment Overview 1 1-7 Figure 1-3. Typical Linearity Detector 877 -1 Figure 1-4. Radiation Input vs. Meter Reading (Cal culated Curve).
Victoreen 875 Operators Manual 1-8 Figure 1-5. High-Range Detector, Recommended Installation 1.4 Receiving Inspection Upon receipt of the unit: 1. Inspect the carton(s) and contents for damage. If damage i s evident, file a claim with the carrier and notify Fluke Biomedical, Radiation Manageme nt Services at 440.
Introduction Storage 1 1-9 1.5 Storage Storage of Victoreen instruments must compl y with level B storage requirements as outlined in ANSI N45.2.2 (1972) Section 6.1.2(.2). Th e storage area s hall comply with ANSI N45.2.2 (1972) Section 6.2 Storage Area, paragraphs 6.
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Installation Installation 2 2-1 Section 2 Installation 2.1 Installation Installation of the monitoring system consist s of se lecting suitable mounting site s for each component of the system, mounting each of the component s, and connecting the components into the syste m configuration.
Victoreen 875 Operators Manual 2-2 Under potential L.O.C.A. conditions of pressure and temperature, the cable may expand as much as 11 inches per 100 feet. The distance from the pull box to the det ector will be determined by the amount of flex hose used to seal the detector cables.
Installation Installation 2 2-3 done until cable is pulled and tested. (Refer to t he procedu re Cable-877, in Appendix B, for more information.) Minimum bend radius of the 878-1-9 cable is four inches. When bending conduit or flex hose, take this into consideration.
Victoreen 875 Operators Manual 2-4 Thickness 0.015 inch (0.38 mm) nominal Outer Diameter 0.217 inch (5.51 mm) nominal Impedance 75 ohms nominal Capacitance 22 pf/ft nominal Ancillary Wiring Ancillary .
Operation Operation 3 3-1 Section 3 Operation 3.1 Operation Once installation is completed, operation is fully automatic. The 87 6A-1 Readout Module co ntinuously indicates the level of radioactivity measured at t he detector site. When the radiation level excee ds an alarm set point, an alarm is actuated.
Victoreen 875 Operators Manual 3-2 alarm level. Return the module to its proper posi tion in the rack. Ti ghten the rear holding screws. Tighten the knurled holding kno b on the front.
Function Description Functional Description 4 4-1 Section 4 Function Description 4.1 Functional Description High-Range Containment Monitor Detector 877-1 The high-range containme nt monitor detector is an io n chambe r detector that has the appeara nce of a six-inch diameter dom ed cylinder about seven inch es long, mounted on an L shaped b racket.
Victoreen 875 Operators Manual 4-2 Preamplifier I Meter Printed Circuit Board (P/N 876A-1-86, Schematic 876A-1-3E) The detector current, measuring from 7 x 10 - 11 to 7 x 10 -4 amperes respectively, at the bottom and top of the reading range, enters the reado ut on rear panel connector J1.
Function Description Readout Module876A-1 4 4-3 High Voltage Power Supply Normal Operation (non-ECS Test) The multivibrator circuit of Q7 and Q8 also suppli e s the input to the high voltage generator. Two of the transistors of U1 act as buf fers between the multiv ibrator and the high volta ge circuit.
Victoreen 875 Operators Manual 4-4 Preamplifier I Meter Board Power Supply (P/N 876-1-86, Schematic 876-1-3E) A +6.2 V power supply contained on the pre amplifier me ter board has as its input the +15 V from the power supply board.
Function Description Readout Module876A-1 4 4-5 There is a yellow ALERT ALARM jumper connecte d to the collector (pin 1) of the alert alarm relay driver stage of U503.
Victoreen 875 Operators Manual 4-6 The pen clamp circuit is a clamping circui t consisting of U501, pins 8, 9 and 10 an d diode CR502. It prevents pin 9 from going negative. The purp ose of this is to prevent the recorder pen from being jammed against the baseline.
Function Description Readout Module876A-1 4 4-7 During the ECS test, all alarms are muted; that is, their operation is disabled until the completion of the test. During this six-second period there is no warning of a high radiation condition. If this situation is not tolerable, two containment monitors must be installed.
Victoreen 875 Operators Manual 4-8 high voltage ramp. The overall circuit that monitors the ECS test also includes U2 , described with the power supplies; and the S AFE/FAIL circuit on the relay driver printed circuit boa rd. Ultimately, by the action of R218, the charge in tegration adjustment potent iomet er (CHARGE I NTEG.
Function Description Readout Module876A-1 4 4-9 Safe/Reset Sub-circuits The three sub-circuits described be low are all involved in the opera tion of the green SAFE/RESET lamp and its associated alarm: 1. A latch for the SAFE/RESET lamp built around four NOR ci rcuits of integrated circuit U202, with several auxili ary elements.
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Maintenance, Calibration, and Troubleshooting Maintenance 5 5-1 Section 5 Maintenance, Calibration, and Troubleshooting 5.1 Maintenance The monitor is designed to operate for long periods in the containment witho ut attention. The following replacement schedule should ke ep the monitor in trouble-free operation.
Victoreen 875 Operators Manual 5-2 Table 5-1. Recommended Test Equipment Current Generator - Test Electrometer Range 1 x 10 -12 Amps to 1 x 10 -3 Amps Accuracy, Current Gene rator 10 -12 Amps ± 10% 10 -11 Amps ± 3% 10 -10 to 10 -7 Amps ± 2% 10 -7 to 10 -3 Amps ± 0.
Maintenance, Calibration, and Troubleshooting Troubleshooting 5 5-3 5.3 Troubleshooting The 875 High-Range Containme nt Monitor is safety-related equipment. The monitor h as been assembled by techniques and with parts selected for the reli ability required in a nuclear application.
Victoreen 875 Operators Manual 5-4 5.4 Power Supply Measurements (P/N 876-1-89 Schematic 876-1-3C) Turn the 876A-1 on by turning the function switch to the ALL positi on. Allow all equipment, including the readout module, to warm up for at least 60 minutes before attempting any calibration.
Maintenance, Calibration, and Troubleshooting Signal Input Circuit 5 5-5 TP501 +5 V -2.8 V TP502 -1.5 V +6.3 V These voltages are approx imate and actual values may differ somewhat. Any marked departure s from these values is an indicatio n of a malfunction.
Victoreen 875 Operators Manual 5-6 *Normal here signifies a small radiation signal so that the voltage at TP502 is close to zero volts. Both of the solenoids of the alert and high alarm circuits must operate for the CHANNEL TEST lamp to light.
Maintenance, Calibration, and Troubleshooting Muting Stages of the Alarm Circuits 5 5-7 Conversely, during the ECS Test muting is definitel y wanted, and the +1 2 V on pin 9 can easily overcome the +2 V on pin 10.
Victoreen 875 Operators Manual 5-8 U PIN 204 1 205 6 205 3 205 1 206 7 203 10 207 6 207 9 CONN 5 206 10 CONN 1 0203 1 208 13 201 8 208 3 202 10 Figure 5-1.
Maintenance, Calibration, and Troubleshooting Overall Fail Circuitry Associated with the ECS Test 5 5-9 5.11 Overall Fail Circuitry Associated with the ECS Test Because the ECS Test involves circuits .
Victoreen 875 Operators Manual 5-10 2. An auxiliary pulse from pin 3 of U208 to the automat ic pulse generating circuits resets them so that an automatically generated pulse will be presen t 17.1 minutes later if the ECS Test is not conducted manually durin g that time.
Maintenance, Calibration, and Troubleshooting Operation of Latch Circuit 5 5-11 U202, pins 1, 5, L (Enable pulse active; i.e. low) From these conditions, the following mu st hold true. Pin Comment 4 Depends on 6 3 Depends on 2 Further analysis is contain ed in the truth table (Table 5-2).
Victoreen 875 Operators Manual 5-12 8 L Connected to 4 12 L 10 H Since U202, (8, 9, 10) is NOR 11 H Because 12 and 13 are L 12 H Result: Output switches from Low to High This is the original condition. No change takes place. Notes: 1) Enable pulse assum ed present, so 1 and 5 are L.
Appendix Calibration and Test Procedures A A-1 Appendix A Calibration and Test Procedures A.1 Calibration Procedures Document Number De scription CAL877-1 High Range Dete ctor 877-1 Calibration REPORT 877 Calibration of Model 877 to 3.0 MeV The calibration and data listed above is f or reference only and need not be performe d.
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Appendix Cable and Pull Box Proc edures B B-1 Appendix B Cable and Pull Box Procedures B.1 Cable and Pull Box Procedures Document Number De scription CABLE-877 HRCM Cable Termination and Installation .
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Appendix Applicable Drawings and Bill of Materials C C-1 Appendix C Applicable Drawings and Bill of Materials C.1 Applicable Drawings Document Number Descripti on GEL876-1-55 Rack Chassis & Recom mended Seismic Mtg.
Victoreen 875 Operators Manual C-2 876-1-3G Schematic, PC Board 876A-1-40 Front Panel Assembly 876A-1-41 Meter Assembly 876A-1-3H Schematic (Block Diagram.
Appendix Applicable Bill of Materials C C-3 C.2 Applicable Bill of Materials Document Number Descripti on 875-1 876A-1 Readout with 877-1 Detector 876A-1 High-Range Containment Monitor Read out 876-1-.
C-4 Fluke Biomedical Radiation Management Services 6045 Cochran Road Cleveland, Ohio 44139 440.498.2564 120 Andrews Road Hicksville, New York 1180 1 516.
An important point after buying a device Fluke 875 (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 875 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 875 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Fluke 875 you will learn all the available features of the product, as well as information on its operation. The information that you get Fluke 875 will certainly help you make a decision on the purchase.
If you already are a holder of Fluke 875, 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 875.
However, one of the most important roles played by the user manual is to help in solving problems with Fluke 875. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Fluke 875 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
