The Alnor Electronic Balometer system with the
APM 150 meter is designed to measure supply or
exhaust air flow from diffusers or grills in HVAC
systems. The assembly consists of a meter, nylon
hood, handles, and a base. The meter has a digital
readout of volume flow and temperature when
used with a Balometer base. The range of
measurement spans from 50 to 2000 CFM (85 to
3
3400 m
/h or 24 to 945 l/s) and 32ºF to 122ºF (0ºC
to 50ºC). The meter sums and averages air flow up
to 100 points.
Functions are selected through a 7-key pad on the
APM 150. In addition, you can choose from
among many menu-driven items for added
measuring flexibility. Options such as units of
measurement and time-constant settings can also
be selected.
The APM 150 displays measurement results on a
liquid-crystal display (LCD), with additional
display segments for memory locations and units
of measure.
!
When using the instrument to check air flow
in an elevated workplace, make certain that
you can safely raise and hold the instrument
while making measurements. This is
especially important when you are working on
a ladder.
!
Avoid catching attachments in moving
machinery.
2
2
GENERAL DESCRIPTION
SAFETY NOTICE
The instrument's memory can hold 100 readings
of velocity, volume, or temperature. For
convenience, memory can be organized into
sections called "pages." All data is saved in
battery-backed memory.
Readings can be printed during operation by an
optional printer, or can be saved for subsequent
downloading. The RS232-C serial connection
attaches the APM 150 to a printer or personal
computer.
The adjustable tilt mechanism allows you to
comfortably read the meter from a wide range of
angles.
The APM 150 meter can be disconnected and
removed from the base and used with a variety of
TSI probes.
Three replaceable AA size batteries power the
instrument. You can enable an automatic shut-off
to increase battery life.
!
Use the instrument only for measurements
using air.
!
Avoid any corrosive or other dangerous or
explosive gas mixtures.
Please dispose of used
batteries in a
responsible manner.