PROVA AVM-01 User manual

THERMO ANEMOMETER
AVM-01/AVM-03
USERS MANUAL
PROVA INSTRUMENTS INC.

TABLE OF CONTENTS
I. FEATURES..........................................................................................................1
II. FRONT PANEL DESCRIPTION.........................................................................2
III. OPERATION INSTRUCTION............................................................................3
A. Measurement of Wind Velocity (refer to figure 2)................................3
B. Measurement of Wind/Air Temperature (AVM-03)................................4
C. Holding the Reading................................................................................4
D. Finding the Maximum Temperature (AVM-03) ......................................4
IV. SPECIFICATIONS (23±5°C)............................................................................5
V. BATTERY REPLACEMENT.............................................................................6

1
I. Features
zSensitive and Accurate (ultra low friction jewel bearing)
zErgonomic and easy-to-use design
zRead while measuring (detached vane)
zLarge 17mm 3 ½ digits LCD (Liquid Crystal Display)
z2 meters coiled cable and mounting nut for long extension
zLow power consumption
zData/Max hold function
zBuild-in low battery indicator
WARNING: This anemometer is designed for measurement, not for
monitoring. So please do not put it in the environment of high temperature for
a long time. And in the environment over 15m/s, do not operate it for more
than 1 minute.

2
II. Front Panel Description
Figure 1
2-1 On/Off Push Button 2-7 Units Symbols
2-2 Data Hold Button 2-8 Battery Low Symbol
2-3 Max. Hold Button (Temp.) 2-9 Max. Hold Symbol for Temp.
2-4 Function Selection Switch 2-10 Data Hold Symbol
2-5 Units Selection Switch 2-11 Error Symbol
2-6 Units Symbols of Velocity

3
III. Operation Instruction
Figure 2
A. Measurement of Wind Velocity (refer to figure 2)
1. Press the on/off button to turn on the anemometer.
2. Select anemometer function by moving the function switch
3. Select the desired units by moving the unit selection switch
4. Determine the approximate wind direction.
5. Hold the anemometer so that the air flow will pass through the vane
from the back to the front (the back: where the mounting nut is; the
front: where engraving of ANEMOMETER is).
6. Wait for 4 seconds for a stabilized reading
7. For more accurate results, try to keep the axis of the vane within 20°of
the wind direction.

4
B. Measurement of Wind/Air Temperature (AVM-03)
1. Press the on/off button to turn on the thermo anemometer
2. Select
°C or °F by moving the function switch
3. Let the wind pass through the vane ( A thermocouple is built into the
center of the vane).
4. Read the reading from LCD.
C. Holding the Reading
Press the hold button to hold the reading of wind velocity or temperature.
D. Finding the Maximum Temperature (AVM-03)
Press the max button, the maximum temperature measured during the
measurement shall be displayed and updated on LCD.

5
IV. Specifications (23±5°C)
Range of Wind Velocity:
Units Range Resolution Threshold Accuracy
m/s 0.0 - 45.0 0.1 0.5 ±3% ± 0.3
ft/min 0 - 8800 10 60 ±3% ± 40
knots 0.0 - 88.0 0.1 0.6 ±3% ± 0.4
Km/hr 0.0 - 140.0 0.1 1.0 ±3% ± 0.8
mph
(optional) 0.0 - 100.0 0.1 0.7 ±3% ± 0.4
m/s :meter per second ft/min : feet per minute
knots :nautical miles per hour Km/hr : kilometers per hour
mph : miles per hour
Unit Conversion table:
m/s ft/min knots Km/hr mph
1 m/s 1 196.87 1.944 3.60 2.24
1 ft/min 0.00508 1 0.00987 0.01829 0.01138
1 knot 0.5144 101.27 1 1.8519 1.1523
1 Km/hr 0.2778 54.69 0.54 1 0.6222
1 mph 0.4464 87.89 0.8679 1.6071 1
Range of Temperature:
Range Resolution Accuracy
°C 0 - 60.0 0.1 ±0.8
°F 32.0 - 140.0 0.1 ±1.5
Bearing : Sapphire jewel bearing
Temperature sensor : K-type thermocouple
Mounting Nut : 1/4" x 20
Operating Temperature : Meter 0 °C ~ 50°C (32 °F ~ 122°F)
Vane
0°C ~ 60°C (32 °F ~ 140°F)
Operating Humidity : Less than 80% RH
Operating Pressure : 500 mB ~ 2 Bar

6
Storage Temperature : -40°C ~ 60°C (-40°F ~ 140°F)
Power Consumption : Approx. 6 mA
Battery Type : 9V
Battery Life : 50 hours ( for 300mA-hrs battery)
Averaging Period for Wind Speed Measurement
m/s : 0.6 sec.(approx.)
ft/min : 1.2 sec.(approx.)
knots : 1.2 sec.(approx.)
km/hr : 2.2 sec.(approx.)
Dimension : Meter 3.46"x 6.61"x 1.03" (88x 168 x 26.2mm)
Vane 2.60"x 5.22"x 1.15" (66x 132 x 29.2mm)
Weight : 12.34oz / 350g. (battery included)
Accessories : Carrying case x 1
Users manual x 1
9V Battery x 1
V. Battery Replacement
When the low battery symbol is displayed on LCD, follow the following
procedures to replace the battery.
A. Turn off the anemometer by pushing the On/Off button.
B. Remove the screw of the battery compartment cover and remove the
battery compartment cover.
C. Replace the old 9V battery with a new 9V battery.
D. Replace the battery compartment cover and fasten the screw.