Greenlee ANM-50 User manual

999 3803.0 © 2000 Greenlee Textron IM 1478 REV 1 12/01
ANM-50
ANEMOMETER
AND
THERMOMETER
ANEMÓMETRO
Y
TERMÓMETRO
ANEMOMETRE
ET
THERMOMETRE
INSTRUCTION MANUAL
MANUAL DE INSTRUCCIONES
MANUEL D’INSTRUCTIONS
Read and understand all of the instructions and safety infor-
mation in this manual before operating or servicing this tool.
Lea y entienda todas las instrucciones y la información sobre
seguridad que aparecen en este manual, antes de manejar esta
herramienta o darle mantenimiento.
Lire attentivement et bien comprendre toutes les instructions
et les informations sur la sécurité de ce manuel avant d‘utiliser
ou de procéder à l‘entretien de cet outil.

2
KEEP THIS MANUAL
Description
The Greenlee ANM-50 Anemometer and Thermometer is a hand-held testing
device for measuring three different characteristics: velocity (speed), flow
(volume of air per unit of time), and temperature. Useful for checking the output
of HVAC/R systems, the ANM-50 can take single-location measurements or
multiple-location measurements.
The ANM-50 can display either metric or U.S. units of measure.
Safety
Safety is essential in the use and maintenance of Greenlee tools and equipment.
This instruction manual and any markings on the tool provide information for
avoiding hazards and unsafe practices related to the use of this tool. Observe all
of the safety information provided.
Purpose
This instruction manual is intended to familiarize all personnel with the safe
operation and maintenance procedures for the Greenlee ANM-50 Anemometer
and Thermometer.
Keep this manual available to all personnel.
Replacement manuals are available upon request at no charge.

ANM-50
3
Important Safety Information
Read and understand this material before operating or
servicing this equipment. Failure to understand how to
safely operate this tool can result in an accident
causing serious injury or death.
This symbol is used to call your attention to hazards or unsafe practices
which could result in an injury or property damage. The signal word,
defined below, indicates the severity of the hazard. The message after the
signal word provides information for preventing or avoiding the hazard.
SAFETY ALERT SYMBOL
Immediate hazards which, if not avoided, WILL result in severe injury or
death.
Hazards which, if not avoided, COULD result in severe injury or death.
Hazards or unsafe practices which, if not avoided, MAY result in injury or
property damage.

4
Important Safety Information
Electric shock and fire hazard:
•Do not expose this unit to rain or moisture.
•Do not use the unit if it is wet or damaged.
• Use this unit for the manufacturer’s intended purpose only, as described in
this manual. Any other use can impair the protection provided by the unit.
Failure to observe these warnings can result in severe injury or death.
•Do not operate with the case open.
•Before opening the case, shut off the unit.
Failure to observe these warnings can result in severe injury or death.
Electric shock hazard:
Contact with live circuits can result in severe injury
or death.
•Do not attempt to repair this unit. It contains no user-serviceable parts.
•Do not expose the unit to extremes in temperature or high humidity.
See Specifications.
Failure to observe these precautions can result in injury and can damage
the unit.

ANM-50
5
Identification
1. Sensor Vane with thermocouple
2. Display LCD
3. ON-OFF RESET Press to turn the unit on or off
4. MODE VELOCITY Use for calculating airflow (see Advanced Functions)
FREE AREA FLOW
5. HOLD Press to hold the present measurement on the display;
press again to return to the normal display mode
6. AVERAGE Press to take measurements at several locations
MULTI-POINT (see Advanced Functions)
7. SEL: -MPH Press to select one of the various measurement units
-KNOTS (see Basic Functions)
8. MIN/MAX REC Press to take measurements at a single location
SINGLE-POINT (see Basic Functions)
1
2
3
4
5
67
8

6
Display Icons
9. 0000 Velocity or Flow
Measurement
10. vel Velocity
11. FLOW Airflow
12. AREA Free Flow Area
–used for
computing airflow
13. Hold Hold Function
is enabled
14. knots Knots
15. ft/m Feet per Minute
16. ft2Area in Square Feet
17. m/s Meters per Second
18. m2Area in Square Meters
19. mil/h Miles per Hour
20. cfm Cubic Feet per Minute
21. km/h Kilometers per Hour
22. cms Cubic Meters per Second
23. MIN Minimum Measurement
24. MAX Maximum Measurement
25. REC Record Mode is enabled
26. AVG Average Measurement
27. -100.0 Temperature Measurement
28. °C Celsius Scale is selected
29. °F Fahrenheit Scale is selected
vel FLOW AREA HOLD
˚C
˚F
PH knots
MIN
MAX
REC
AVG
ft/m
m/s
mil/h
km/h
ft2
m2
cfm
cms
27
26
24
23
25
9
10
22
21
28
29
19
20
18
17
16
11 12 13 15 14

ANM-50
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20°
20°
Operation
1. Turn the unit on. After performing a self-test, the unit will display the
temperature and air velocity.
2. If the unit does not function as expected, replace the battery.
3. If the unit still does not function as expected, send the unit to Greenlee for
repair. See the address shown under Warranty.
4. See Basic Functions and Advanced Functions for detailed operating
instructions.
Typical Measurement
•Place the unit in the airstream. For highest accuracy, ensure that the airstream
and the sensor are aligned (±20 degrees maximum) as shown.
•Allow at least three seconds for the reading to stabilize.
Electric shock hazard:
Contact with live circuits can result in severe injury
or death.

8
Basic Functions
Metric and U.S. Measurement Scales
Use this procedure to select either metric scale (Celsius for temperature and
meters per second for airflow) or the U.S. scale (Fahrenheit for temperature and
feet per minute for airflow).
1. Turn the unit off.
2. Press the AVERAGE MULTI-POINT button and hold.
3. Press the ON-OFF RESET button and release.
4. Release the AVERAGE MULTI-POINT button after the LCD shows the
measurement scales.
5. Press the AVERAGE MULTI-POINT button to select the U.S. scale.
OR
Press HOLD to select the metric scale.
6. Press the MIN/MAX REC button and release. The letter “S”will appear on the
display.
7. Press HOLD and release. A four-digit number will appear on the display.
8. Press the MIN/MAX REC button and release. The letter “S”will appear on the
display.
9. Press HOLD and release. The display will return to normal.
Measurement Units
In addition to selecting a measurement scale (metric or U.S.), you may also
select one of several measurement units. After turning the unit on, press and
release the SEL: -MPH -KNOTS key to cycle through the choices:
The choices will appear in this order:
• Metric: Meters per Second • Kilometers per Hour • Knots
• U.S.: Feet per Minute • Miles per Hour • Knots

ANM-50
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Basic Functions (cont’d)
Air Velocity or Temperature Measurement (Single Location)
1. Turn the unit on. When “vel”appears in the upper left corner and the
temperature appears in the lower right corner, the unit is ready to take a
measurement.
2. Place the unit in the airstream.
Minimum, Maximum, and Average (Single Location)
1. If the unit is on, press and hold the MIN/MAX REC SINGLE-POINT button
until the unit beeps twice to erase any stored data.
OR
Turn the unit on. When “vel”appears in the upper left corner and the
temperature appears in the lower right corner, the unit is ready to take a
measurement.
2. Place the unit in the airstream.
3. Press the MIN/MAX REC SINGLE-POINT button.
REC and AVG will appear on the display.
4. Press the HOLD button before removing the unit from the airstream.
5. Press the MIN/MAX REC SINGLE-POINT button to review the stored data,
which will appear in this order:
* Instantaneous Measurement •Minimum •Maximum •Average
* The measurement taken when the HOLD button was pressed.
Automatic Power-Off
The ANM-50 shuts off after approximately 20 minutes of inactivity to conserve
battery power. To bypass this feature, turn the unit off and follow this sequence:
1. Press and hold the HOLD button.
2. Press the ON-OFF RESET button and release.
A lowercase letter “n”will appear on the display.

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Advanced Functions
Air Velocity Average (Multiple Locations)
1. If the unit is on, press and hold the AVERAGE MULTI-POINT button until the
unit beeps twice to erase any stored data.
OR
Turn the unit on. When “vel”appears in the upper left corner and the
temperature appears in the lower right corner, the unit is ready to take a
measurement.
2. Place the unit in the airstream.
3. After taking the measurement, press and release the HOLD button.
You will hear a tone and HOLD will appear on the display.
4. Press the MIN/MAX REC button.
You will hear a tone and a single digit (1 –8) will appear on the display.
This digit is the location number.
5. Repeat Steps 2 –5 until all of the locations have been tested, up to the
maximum of 8 points.
6. Press the AVERAGE MULTI-POINT button.
The display will show the average air velocity measurement and the number
of locations tested.
Air Flow Measurement (Single Location)
Air flow, or volume of air per unit of time, is calculated by multiplying the air
velocity by the free area of the grill or register. This specification is available from
the grill or register manufacturer.
1. Turn the unit on.
2. Press the MODE VELOCITY FREE AREA FLOW button.
AREA and 1.111 will appear on the display.
The leftmost digit will flash.
If this is correct for your application, proceed to Step 3.
Otherwise change the area value as shown below.
•Press the HOLD button to increment the flashing digit.
•Press the AVERAGE MULTI-POINT button to advance to the next digit.
3. Press the MODE VELOCITY FREE AREA FLOW button to save the information.
FLOW will appear on the display.
4. Place the unit in the airstream.