Magnetic Field Meter
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HB2TM1910001
Table of Contents
1 Introduction...................................................................1
2 Application....................................................................1
3 Features.......................................................................1
4 Identifying Parts............................................................2
5 Measurement Procedures ............................................2
6 Specifications ...............................................................4
7 Battery replacement .....................................................4
8 Safety Precaution.........................................................5
9 End of life.....................................................................5
TM-191
1 Introduction
Safety precautions should be taken against electric appliances
in places including medical institutions, schools and residential
districts, where people usually stay for a long time, to prevent
patients, babies and senior citizens from exposure to high
electromagnetic waves.
An electromagnetic wave simply means the wave motion of the
electromagnetic field (EMF).
The change in electric fields produces magnetic fields, and the
change in magnetic fields can also generate electric fields. The
fluctuation of correlation between each other is known as
“electromagnetic waves", which is a form of energy similar to
light and heat that can be transmitted either by radiation in the
air or by an electric conductor.
It is suggested that rearrangements should be made in families
and work locations where electromagnetic fields are detected
the strongest in order to avoid prolonged exposure to excessive
lectromagnetic fields. e
2 Application
This meter is applied to measuring electromagnetic fields
of extremely low frequency (ELF) of 30 to 300Hz.
It is capable of measuring the electromagnetic field
radiation intensity that is produced from electric
transmission equipment, power line, microwave oven, air
conditioner, refrigerator, computer monitor, video/audio
device and so forth.
The magnetic field unit is Tesla (T), Gauss (G),
milli-Gauss (mG) or micro-Tesla (μT).
1 T＝10,000 G 1 G＝1,000 mG
1μT＝10 mG
3 Features
Switch between the display of micro-Tesla and milli-G auss
is available.
Data hold (HOLD)、maximum (MAX) Hold function.
Range display(20,200,2000).
Low battery detector “ ”.
Over load display “OL”.
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4 Identifying Parts
1. Sensor position.
2. LCD
3. Power on/off.
4. maximum hold button
5. Data hole button
6. mG unit select button
7. µT unit select button
8. Range select button
9. Battery cover .
5 Measurement Procedures
Press to power on.
Select for mG unit or for µT unit.
Position the front (refer to Figure 1) of the meter to
measure the electromagnetic waves. Try to change the
measurement angle or position for obtaining the highest
reading value (please refer to Figure 2 to 6).
Read the measured value. The display of “OL” on the left
highest position indicates there is an overload on the
reading. Please press to select a higher range for
measurement again.
Due to the environmental magnetic field factors, this
magnetic field meter could display a reading value that is
lower than 0.5mG prior to measuring. This is not a
malfunction of the device.
To permanently lock and keep the reading displayed on
the LCD, press or press again to unlock.
To retain the maximum value, press and the
reading value displayed on the LCD will keep updating to
the maximum value.
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Figure 1 indicate the correct measurement direction of the
electromagnetic wave.
Figure 2,3, 4, 5 and 6 indicate the incorrect measurement
direction of the electromagnetic wave.
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TM-191
6 Specifications
Display: 3-1/2 digits LCD, maximum reading 1999.
Range: 200/2000 mG,20/200µT.
Resolution: 0.1/1 mG or 0.01/0.1 µT.
Frequency response: 30Hz to 300Hz.
Sensor: Single Axis
Accuracy: ±(2.5%+6dgt) at 50Hz/60Hz.
Over load: LCD display “OL”.
Sample rate: 2.5 times per second.
Battery: 9V NEDA 1604, IEC 6F22 or JIS 006P.
Battery life: Approximate 100 hours.
Operating temperature & humidity: 5℃to 40℃,below
80% RH.
Storage temperature & humidity: -10℃ to 60℃, below
70%.
Weight: About 170g.
Dimensions: 130(L)*56(W)*38(H)mm.
Accessories: User’s manual, 9V battery, Carrying case.
7 Battery replacement
WARNING
If the symbol “
” appears on the LCD, please
replace the battery immediately
Turn off the instrument.
Remove the battery cover
Replace the battery.
Install the battery cover.
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TM-191
8 Safety Precaution
For cleaning the instrument use a soft dry cloth. Never use
a wet cloth, solvents or water, etc..
Operation Altitude: Up to 2000M.
Operating Environment: Indoors use. This instrument has
been designed for being used in an environment of
pollution degree 2.
9 End of life
Caution: this symbol indicates that equipment
and its accessories shall be subject to a
separate collection and corre ct disposal
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TENMARS ELECTRONICS CO., LTD
6F, 586, RUI GUANG ROAD, NEIHU,
TAIPEI 114, TAIWAN.
E-mail: service@tenmars.com
http://www.tenmars.com
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