B. Using The Apm150; Basic Functions; To Change Units; To Hold A Reading (For Storage Or Printing) - Alnor APM 151 Manual Del Usario

—
—
—
Factory use only.
This option allows you to enable or
disable the serial port. In the normal
RUN mode, the port must be
disabled (increases battery life).
To enable port
• At menu selection [
↵.
• Press ↑ or the ↓ until
• Press ↵.
To disable port
• At menu selection [
↵.
• Press ↑ or the ↓ until
appears.
• Press ↵.
tc allows you to select from five
different speeds of display response.
• A setting of 1 is a quick response.
• A setting of 5 is a slow response.

B. Using the APM150

Basic Functions

To Change Units:

! Push the UNIT key until [
↑ ↓
! Use the and keys to view new measurement
units.
! The display annunciator ▲ will move to the
selected unit (see Figure 3).
Push ↵ to select a new measurement unit.
!
For example: To change the units of measurement
from cubic feet per minute (cfm) to cubic meters
3
per hour (m /h) while using a thermo-anemometer
probe:
12
O V dc.
4.965 to 5.025 V dc.
battery voltage (3.5 V
fresh batteries)
], press
appears.
], press
] appears.
12
Figure 15—Display with annunciator and units of
measure
! Push the UNIT key until [
! Push ↑
until the display annunciator ▲ moves
3
to m /h, selecting cubic meters per hour.
! Push ↵ to select the measurement unit.
Note: Not all units are achievable with the
attached hood.

To Hold a Reading (For storage or printing):

! Push the HOLD key briefly until the measured
value flashes.
! Push HOLD again to STORE this reading to
memory, or push ON/OFF to reject it and return
to RUN mode.
! If the meter is attached to the base, you may also
push the red button on the right handle for your
hold functions.

Measurement Modes

You can set the APM 150 for temperature or
volume measurement by pressing the UNIT key.

Volume Selection

(when a 175 or 275 probe is attached):
Air volume measurement is achieved by
multiplying a velocity reading by an area.
• When you press the VOL key, the [
menu appears on the display and provides a way
to choose whether you are measuring by area (in
square units) or by a round or rectangular cross-
section.
• Make your selection by scrolling using the ↑ and
↓ keys, then pressing the ↵ key to accept your
choice.
] appears.
]