Tenmars TM-740 User manual

TeNMARS <{3>
Professional Electrical and
Environment Test &Measurement
Instruments:
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meter Light meter, EMF meter, UV Light meter,
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C0 2meter,
Solar power meter, Radiation meter,
Clamp meter, Multimeter, Phase Rotation test,
Digital Insulation tester
Our Qroducts of high quality are selling
well all over the world
TENMARS ELECTRONICS CO., LTD
6F, 586, RUI GUANG ROAD, NEIHU,
TAIPEI 114, TAIWAN.
E-mail: [e-mail]
http://www.tenmars.com
Te MARS
Air Velocity Meter
TM-740
User's manual
(E
HB2TM7400002
TEN ARS ELECTRONICS CO., LTD

TENMARS
TM-740
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. CALI"C/
oF Button: 8
6.3. °CI"F Button: 8
6.4. MAXIMIN/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
8. Battery Replacement 11
9. End of life 11
1. Des cri ption
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
• 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 "
tIE " 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.
3

TENMARS
TM·740 TE
MARS
TM·740
• Operating Environment : Indoors use. This
instrument has been designed for being used
in an environment of pollution degree 2.
• Operation Altitude : Up to 2000M.
• EMC : EN61326-1(2006), IEC 61000-4-2(2008,
IEC 61000-4-3(2006) + (2007).
4
3. Features
• 30mm 6 plastics vane.
• Light air response OAm/s.
• MaxlMin/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
n n8 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 x48 x23 mm (L xWxH).
• Weight : 80g (excluding the battery).
• Accessories : User manual, battery, and
carrying case.
5

TENMARS TM-740
TENMARS
TM-740
• Operating Temperature and Humidity: 5. AIR VELOCITY MEASURES
5°C - +50°C, <95% RH. Fallow the arrows to measure velocity. As
• Storage Temperature and Humidity : shown in figures.
-10 to 60°C, <70% RH.
Electrical Specification:
Velocity '
Unit Ranae Resolution
Accuracy
mls 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
ftImin(fpm) 79-4921 1 ±2%+40
WARNING
Please don't touch the vanes by fingers
or foreign body to avoid damage to the
vanes.
7
Temperature:
Unit
Range Resolution
Accuracy
'c -20-50 0.1 ±1'C
'F -4- 122 0.1 ±1.8'F
Accessories :
• User manual.
• 1.5V battery (
AM MN2400 LR03 AM4)*2.
• Carrying case.
6

TeNMARS TM-740
TeN MARS
T -740
6. Oper ation
6.1. Velocity Unit Button:
Select the mls -+ Knots(kts) -+fUmin(fpm)
-+Km/hr(kph) -+ mph.
6.2. CAL I ·CI of 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. 0 c! of Button :
Select °CI r .
6.4. MAXIMIN/AVG Button :
Press "MAXIMIN" button simultaneously
Lockup data maximum and average and
minimum value of measure data. Press
the "MAXIMIN" button for more than 1
second to disable this feature.
8
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 th e" " 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
II
Power Off by pressing the " " button
more than 2 second the LCD "
0,, symbol
will disappear or enable.
9

WARNING
If the symbol " CZI "appears on the
LCD, please replace the battery
immediatel .
•
TEN MARS
TM-740
TE·· ....... ,- - TM·720
7. Instrument Description 8 Battery Replacement
1. Vane.
2. Display (LCD).
3. Velocity unit select button.
4. Calibration and ·CI''F button. 1. Remove the battery cover.
5. Data hold button. 2. Replace the battery.
6. Maximun/Average/minimum button. 3. Install the battery cover.
7. Power Button : ON/OFF.
..
"'
.
~
..
1
[1
..
i
" • j
~ ~ .. ; _ ' :; .. I Caution : this symbol indicates that
5
3
___ "';1 - - equipment and its accessories
6
4 shall be subject to a separate
collection and correct disposal.
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10 11
9 END OF LIFE