iv
Calibration Factor (Cf) Selection ..................................................................................... 40
Calibration ....................................................................................................................... 40
Printing Data Using the Portable Printer ............................................................................... 41
LogDat-CH
™ Downloading Software .................................................................................... 41
Chapter 5. Changing Capture Hoods ...................................................................................... 43
Capture Hood Parts Identification ......................................................................................... 43
Capture Hood Assembly ....................................................................................................... 43
Alternate Hood Installation .............................................................................................. 44
Direct Inflow Measurement Hood for Biological Safety Cabinets .................................... 49
Chapter 6. Flow Measurements Using the Capture Hood ..................................................... 55
Single Reading Measurements ............................................................................................. 55
Running Average Measurements .......................................................................................... 56
Capture Hood Measurements (non-backpressure compensated) ........................................ 56
Backpressure Compensated Measurements ........................................................................ 56
―ERROR‖ Display .................................................................................................................. 57
Chapter 7. Maintenance and Troubleshooting ....................................................................... 59
Fabric Hood........................................................................................................................... 59
Micromanometer ................................................................................................................... 59
Manifold................................................................................................................................. 59
Cases .............................................................................................................................. 59
Calibration ............................................................................................................................. 59
Appendix A. Back Pressure ..................................................................................................... 61
Verifying Flow Measurements ............................................................................................... 61
Appendix B. Traversing a Duct to Determine Average Air Velocity or Volume .................. 63
Where to Take the Measurement .......................................................................................... 63
Traversing a Round Duct ...................................................................................................... 63
Traversing a Square Duct ..................................................................................................... 64
Appendix C. Swirl X Flow Conditioner for TSI Model 8380 A
CCU
B
ALANCE
®
Air Capture
Hood ........................................................................................................................................... 67
Description ............................................................................................................................ 67
Performance Data ................................................................................................................. 68
Installation and Usage .......................................................................................................... 69
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