TSI Instruments AIRFLOW Instruments ProHood PH721 User Manual

ii
View/Set Standard Pressure and Temperature .................................................................... 21
Set Units of Measure for Temperature, Pressure, Velocity/Flow and Humidity .................... 23
Select the RS232 Output Device (Computer or Printer) ....................................................... 23
Set the Baud Rate ................................................................................................................. 24
Set the Format for Date and Decimal .................................................................................... 24
Set Display Mode for Running Average or Single ................................................................. 25
Select Discrete or Continuous Logging ................................................................................. 25
Turn Back Pressure Compensation On and Off .................................................................... 26
Take Back Pressure Compensated Hood Readings ............................................................. 26
Set Deadband On and Off ..................................................................................................... 27
Calibrate the Micromanometer (User Calibration) ................................................................. 27
Select User Calibration or Factory Calibration ...................................................................... 28
Connect and Download Data to an Optional Printer ............................................................. 28
Connect and Download Data to a Computer .................................................................. 29
Data Acquisition (Polling) ...................................................................................................... 30
Chapter 5. Changing Flow Hoods ........................................................................................... 31
Flow Hood Parts Identification .............................................................................................. 31
Hood Assembly ..................................................................................................................... 31
Alternate Hood Installation .............................................................................................. 32
Direct Inflow Measurement Hood for Biological Safety Cabinets .................................... 37
Chapter 6. Flow Measurements Using the Capture Hood ..................................................... 43
Non-Backpressure Compensated Measurements ................................................................ 43
Single Measurements ........................................................................................................... 43
Running Average Measurements .......................................................................................... 44
Backpressure Compensated Measurements ........................................................................ 44
Error Display ......................................................................................................................... 45
Chapter 7. Maintenance and Troubleshooting ....................................................................... 47
Fabric Hood........................................................................................................................... 47
Micromanometer ................................................................................................................... 47
Manifold................................................................................................................................. 47
Cases .............................................................................................................................. 47
Calibration ............................................................................................................................. 48
Error Code ....................................................................................................................... 48
Appendix A. Back Pressure ..................................................................................................... 53
Verifying Flow Measurements ............................................................................................... 53
Appendix B. Actual vs. Standard Air Velocity and Flow Measurements ............................. 55

TSI Instruments AIRFLOW Instruments ProHood PH721 Specifications

General

Brand	TSI Instruments
Model	AIRFLOW Instruments ProHood PH721
Category	Power Tool
Language	English