Sigma BM-286A service manual Operating Instructions

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3. OPERATING INSTRUCTIONS page 23

3.5.3. Detector Efficiency Check:

The Calculation Set-up box will appear and the operator will be prompted for a count time (in seconds) and the calibration source activity (in nanocuries).

Press BEGIN at which time a START button will appear.

Press the START button and the unit will then take an nn second background. The operator will be prompted to place the source in the center of the chamber. Press START to accumulate an nn second count with the source in the chamber.

Calculate efficiencies of the detectors and the overall efficiency of the unit. The efficiencies are displayed, but not stored. Overall efficiency which is the sum of the efficiencies for the six plastic detectors is calculated with a test source in the center of the counting chamber.

3.5.4. Operator Setup:

Operators can be deleted or added by name, badge number, password and level of accessibility (Admin. or User). Be careful in selection of administrative access.

3.5.5. Shut Down:

Pressing this button will close the program and release the computer back to the Windows NT environment.

3.5.6. Detectors, Scale, and Disc.:

This window provides us with a troubleshooting tool as well as a way to adjust the upper and lower level discriminators. Refer to Discriminator Adjustment (section 5.3.) for detailed instructions.

The detector counts and scale weight are displayed and updated every two seconds.

Model BM-286A

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Contents Waste Monitor Model BM-286A Maintenance Table of ContentsInspection and Installation Theory of OperationConfiguration Tracking Sheet Parts TroubleshootingAppendix Warranty Glossary Formulas Recommended Spare Parts Spare Parts Ordering InformationIntroduction Scope and Purpose of ManualSpecifications Introduction Introduction Inspection Installation Operating Instructions General OverviewPOWER-UP and SELF-TESTS Access Menu Level One AccessPCA-II Normal Operation Operating Instructions Programming the System SET-UP Menu AbcdefghOperating Instructions Operating Instructions Waste Stream Parameters Operating Instructions Operating Instructions Operating Instructions This value is used only when the Alarm Type is set to DPM Utilities Menu Operating Instructions Reports Initial Installation Checklist Operating Instructions BM-286A Waste Stream SET-UP Worksheet Unit Operation Theory of Operation Theory of Operation Theory of Operation Theory of Operation Operator Maintenance Maintenance Maintenance ULD Settings for Plastic DetectorsLLD Weight Calibration Maintenance Diagnostic Aids Fault Isolation Computers Longs Peak Court LONGMONT, Colorado Appendix B. Glossary Appendix B. Glossary Activity from Counts Reliable Detectable Activity RDA Formula Variance Configuration Tracking Sheet System ModificationsLongs Peak Court LONGMONT,COLORADO Drawings