ALAT UJI TM-740 User manual
Air Velocity Meter
TM-740
HB2TM7400001
User’s manual
alatuji.com
Table of Contents
1. Description ........................................... 3
2. Safety Precaution ................................ 3
3. features ................................................. 5
4. Specifications....................................... 5
General Specifications .................................. 5
Electrical Specification: ................................. 6
Accessories: ................................................. 6
5. Air Velocity Measures.......................... 7
6. Operation .............................................. 8
6.1. Velocity Unit Button: ........................... 8
6.2. CAL/℃/℉Button: .............................. 8
6.3. ℃/℉Button:....................................... 8
6.4. MAX/MIN/AVG Button:........................ 8
6.5. Data Hold button:................................ 9
6.6. Power Button: ..................................... 9
6.7. Auto Power: ........................................ 9
6.8. Enable/disable auto power off ............ 9
7. Instrument Description ..................... 10
8Battery Replacement ..........................11
12.
End of life.............................................11
TM-740
EN-3
1. Description
TM-740 measures air speed and temperature. It
is ideal for spot measurements.
at air outlets on account of its 30mm vane. In
addition to air speed and temperature.
2. Safety Precaution
CAUTION
Be extremely careful for the following
conditions while measuring.
․ Do not operate the meter under the
environment with explosive gas (material),
combustible gas (material) steam or filled with
dust.
․ In order to avoid reading incorrect data, please
replace the battery immediately when the
symbol " " appears on the LCD.
․ In order to avoid the damage caused by
contamination or static electricity, do not touch
the circuit board before you take any adequate
action.
TM-740
EN-4
․ Operating Environment : Indoors use. This
instrument has been designed for being used
in an environment of pollution degree 2.
․ Operation Altitude : Up to 2000M.
․ Operating Temperature & Humidity :
5 ~℃40 , 0%~ 80%RH.℃
․ Storage Temperature & Humidity :
-10 ~℃60 , 0%~ 70%RH.℃
․ EMC : EN61326-1(2006), IEC 61000-4-2(2008,
IEC 61000-4-3(2006) + (2007).
TM-740
EN-5
3. Features
․ 30mm 6 plastics vane.
․ Light air response 0.4m/s.
․ Air flow calculate function.
․ Max/Min/Avg and data hold.
․ Auto power off with disable function.
4. Specifications
General Specifications
․ Display : Dual LCD display. The maximum
value on the primary display is 9999. The
maximum value on secondary display is 999.
․ Low Battery Indicator : When the LCD displays
" " symbol, please replace the battery.
․ Sampling Rate : 1 sample per second.
․ Power Supply : 2 batteries 1.5V AAA MN2400
LR03 AM4.
․ Battery Life : 50 hours during consecutive use.
․ Dimensions : 135 × 48 × 23 mm (L × W × H).
․ Weight : 80g (excluding the battery).
․ Accessories : User manual, battery, and
carrying case.
TM-740
EN-6
․ Operating Temperature and Humidity : 5°C ~
+40°C, <95% RH.
․ Storage Temperature and Humidity : -10 to
60°C, <70% RH.
Electrical Specification:
Velocity:
Unit Range Resolution Accuracy
m/s 0.4~25 0.1 ±2﹪+0.2
Km/hr(kph) 1.5~90 0.1 ±2﹪+0.8
mph 0.9~55 0.1 ±2﹪+0.4
Knots(kts) 0.8~48 0.1 ±2﹪+0.4
ft/min(fpm) 79~4921 1 ±2﹪+40
Temperature:
Unit Range Resolution Accuracy
℃-20~50 0.1 ±1℃
℉-4~122 0.1 ±1.8℉
Accessories:
zUser manual.
z1.5V battery (AAA MN2400 LR03 AM4)*2.
zCarrying case.
TM-740
EN-7
5. AIR VELOCITY MEASURES
Fallow the arrows to measure velocity. As
shown in figures.
WARNING
Please don’t touch the vanes by fingers
or foreign body to avoid damage to the
vanes.
TM-740
EN-8
6. Operation
6.1. Velocity Unit Button:
Select the m/s ÎKnots(kts) Îft/min(fpm)
ÎKm/hr(kph) Împh.
6.2. CAL/℃/℉ Button:
Calibration of 10 m/s
1. Prepare the 10m/s velocity.
2. Press CAL button and POWER button
more than 2 second the LCD will
display CAL.
3. Unlocks buttons.
4. Press CAL button again more than 2
second the meter will shut down.
5. Correct succeed.
6.3. /℃℉Button:
Select ℃/ ℉.
6.4. MAX/MIN/AVG Button:
Press “MAX/MIN” button simultaneously
Lockup data maximum and average and
minimum value of measure data. Press
the “MAX/MIN” button for more than 1
second to disable this feature.
TM-740
EN-9
6.5. Data Hold button:
Freezes the reading present on the LCD
screen at the moment the button is
pressed.
6.6. Power Button:
Press the ” ” button more than 2
second to power on the meter.
6.7. Auto Power:
To save battery life, the meter powers
down automatically after approximately
12 minutes of inactivity.
6.8. Enable/disable auto power off
Power Off by pressing the ” ” button
more than 2 second the LCD “ ” symbol
will disappear or enable.
TM-740
EN-10
7. Instrument Description
1. Vane.
2. Display (LCD).
3. Velocity unit select button.
4. Calibration and ℃/℉ button.
5. Data hold button.
6. Maximun/Average/minimum button.
7. Power Button : ON/OFF.
TM-720
EN-11
8 Battery Replacement
WARNING
If the symbol ” ” appears on the
LCD, please replace the battery
immediately.
1. Remove the battery cover.
2. Replace the battery.
3. Install the battery cover.
12. END OF LIFE
Caution : this symbol indicates that
equipment and its accessories
shall be subject to a separate
collection and correct disposal.
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