Ludlum Measurements 3100, Manual

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TABLE OF CONTENTS Continued
Chapter Page
7.1.5 Operational Check .................................................................................................................. 7-1
7.1.6 Problem Still Exists ................................................................................................................. 7-1
7.2 LOSS OF BIAS (CHAMBER) VOLTAGE ............................................................................................ 7-1
7.3 LOSS OF AIRFLOW ............................................................................................................................ 7-1
7.4 TEMPERATURE FAILURE ................................................................................................................. 7-2
7.5 LOW POWER ...................................................................................................................................... 7-2
7.6 LEAKS ................................................................................................................................................ 7-2
7.6.1 Can Assembly Leak Test ........................................................................................................ 7-2
7.6.2 Identifying Can Assembly Leaks ............................................................................................ 7-3
7.6.3 Air Circuit Leak Test ............................................................................................................... 7-3
8
PARTS LIST ........................................................................................................................................ 8-1
APPENDIX A CALIBRATION..................................................................................................................A-1
A.1 CALIBRATION PROCEDURES ....................................................................................................A-2
A.1.1 Equipment Required ..................................................................................................................A-2
A.1.2 Initial Checks ..............................................................................................................................A-2
A.1.3 Computer Connection ................................................................................................................A-3
A.1.4 Setting the Board Offset and Pressure Calibration ....................................................................A-3
A.1.5 Airflow Calibration ......................................................................................................................A-4
A.1.6 Zeroing: Electrometer Offset ......................................................................................................A-4
A.1.7 Tritium Calibration ......................................................................................................................A-4
A.2 USE OF THE CL-1 TRITIUM CALIBRATOR ................................................................................A-5
A.2.1 Equipment Required ..................................................................................................................A-5
A.2.2 Unpacking ..................................................................................................................................A-5
A.2.3 Assemble Calibrator ...................................................................................................................A-5
A.2.4 Leak Check ................................................................................................................................A-6
A.2.5 Initial Procedure .........................................................................................................................A-6
A.2.6 Flushing ......................................................................................................................................A-6
A.2.7 Closed Loop Calibration .............................................................................................................A-7
A.2.8 Calculation of Response ............................................................................................................A-7
A.3 USE OF
137
CS GAMMA CALIBRATION RANGE..........................................................................A-8
A.3.1 Equipment Required ..................................................................................................................A-9
A.3.2 Disabling the Gamma Compensation Chamber ........................................................................A-9
A.3.3 Placement of Model 3100 on the Gamma Range ......................................................................A-9
A.4 FINAL CALIBRATION STEPS ....................................................................................................A-10
LIST OF ILLUSTRATIONS
Figure Title Page
1-1 Model 3100 ............................................................................................................................. 1-1
1-2 Front View Model 3100 ........................................................................................................... 1-2
1-3 Model 3100 Case with Mounting Brackets ............................................................................. 1-3
1-4 Model 3100 Inside Open Case ............................................................................................... 1-3
2-1 Identification of Controls ......................................................................................................... 2-1
2-2 Plugging in Power Cord .......................................................................................................... 2-4
2-3 Unplugging Power Cord ......................................................................................................... 2-4
2-4 First Check Display Screen .................................................................................................... 2-5