Features; Zero Adjustment; Range Change - Alnor VELOMETER JR. Manuel Du Propriétaire

FEATURES

® ®
The Alnor Velometer Jr. Anemometer is a direct reading air velocity
measuring instrument.
This precision instrument is ruggedly built and will serve for many
years if given reasonable care.
You can use this instrument to measure air velocities from grilles and
registers and to locate drafts. Balancing of a domestic heating
® ®
installation is made simple when using the Alnor Velometer Jr.
Anemometer.
Hold the instrument so the air blows directly into the calibrated orifice
and read the velocity as indicated by the pointer.

Zero Adjustment

Hold the palm of your hands over the two openings in the sides of the
®
Velometer Jr. Anemometer and note whether the pointer indicates
Zero. If not, turn the Zero Adjuster screw on the front of the case
slightly until the pointer does read zero. (See fig. 1.)
Orifice Fitting
Zero Adjuster
Figure 1

Range Change

Change range by turning orifice fitting on double range instruments.
(Small orifice for high range—large orifice for low range.) (See fig.1.)
2