TABLE OF CONTENTS
General Description.................................1
Operation.................................................2
Calibration ...............................................4
Maintenance............................................7
List of Models/Parts.................................9
Specifications ........................................10
Theory of Operation ..............................12
Performance Check...............................13
Service and Repair................................14
Service Information ...............................15
PERFORMANCE CHECK
When checking performance, always start by
verifying that the meter reads zero with the
probe retracted into the case. Also check the
battery voltage by reading the meter when the
instrument is switched to the BATT position.
Do
not
attempt to adjust any of the calibration
potentiometers unless access to a properly
calibrated wind tunnel test facility is
available.
Environmental conditions (temperature,
pressure, humidity, air turbulence) can
produce different effects on the measured
results for different instrument types. These
differences must be considered when
comparisons are made.
Shape and size of the duct will tend to
produce different measurement results in
different instruments, Insertion of a probe in
a relatively small channel may change the air
velocity as well.
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