1
TABLE OF CONTENTS
Using the Velometer Safely
2
General Description
3
Meter
3
Range Selector
4
Pitot Probe
5
Lo-Flow Probe
5
Diffuser Probe
6
Static Pressure Probe
6
Preparation for Use
7
Diffuser Probe
7
Static Pressure Probe
8
Pitot Probe
9
Lo-Flow Probe
9
Operation
10
Procedure for Measuring Velocity with Lo-Flow Probe 10
Velocities at Suction Openings—Except Diffusers
or Grilles
10
At Grinding or Buffing Wheels
10
At Spray Booths
10
Velocities at Plating Tanks
10
Procedure for Measuring Diffuser, Register and Grille
Velocities with Diffuser Probe
11
Typical Diffuser Air Flow Measuring Procedure
11
Procedure for Measuring Static Pressure
13
Procedure for Air Flow Measurement in Ducts
13
Determining Cross-Section Areas
14
Measuring Duct Velocity
14
Troubleshooting and Maintenance
16
Troubleshooting Guide
16
Maintenance
17
General
17
Cleaning of the Velometer
17
Replacement Parts and Accessories
17
Replacement of the Range Selector Filter
17
Replacement of O-Rings in Probes
18
Replacement of O-Rings on the Meter
18
Calibration
18
Service Information
19
Instructions for Return
20
Ownership/Calibration Log
21