1
.
Long
press
power
to
turn
it
on
.
After
full
screen
display
,
the current
electric
field
and
magnetic
field
value
will
be
displayed
,
press
power
to
turn
the
backlight
on
.
The
screen
will
display
“ ”.
Press
it
again
to
disable
the
backlight
.
If
there
is
no
key operation
,
the
backlight
will
turn
off
automatically
after
30 seconds
.
Long
press
power
to
shut
it
down
.
If
there
is
no
key operation
,
the
instrument
will
shut
down
automatically
after
5
minutes
.
※
Note
:
As
there
may
be
disturbance
of
electromagnetic
field
in the
environment
,
when
starting
up
,
the
instrument
may
give
a small
reading
.
It
is
a
normal
phenomenon
.
2
.
Hold
the
instrument
with
hand
to
make
the
inductive
zone
at front
end
get
closer
to
the
electromagnetic
radiation
source
to
be tested
slowly
.
If
the
actual
radiation
value
is
within
the
technical index
of
the
instrument
,
there
will
be
a
value
displayed;if
the instrument
has
no
reading
,
it
indicates
that
the
electromagnetic radiation
value
of
the
radiation
source
is
smaller
than
the
minimum
reading
of
the
instrument
,
namely 1V
/
m
or
0
.
01
μ
T
.
※
Note
:
Distance
measuring
shall
be
made
for
high-voltage facilities
.
Remember
:
stay
safe
.
3
.
During
measurement
,
press
“
HOLD
”
to
lock
the
instrument reading
.
The
“ ”
will
be
displayed
on
the
screen
.
In
case
of unlocking
,
press
“ ”
again
.
This
instrument
will
produce
a beep
by
default
after
turning
on
and
“ ”
will
be
displayed
on the
screen
.
Long
press
the
“
BEEP
”
to
turn
on
or
off
the
beep
.
4
.
By
pressing
“
AVG/VPP
”
during
measurement
under unlocking
state
,
you
can
switch
between
the
average
and
the
peak value
.
5
.
If
the
figure
displayed
is
unclear
or
the
figure
flickers
or
the figure
cannot
be
cleared
,
it
indicates
that
the
battery
runs
out
of power
.
Please
change
the
battery
in
time
.
This
radiation
survey
meter
has
the
following
features
：
One instrument with two uses,It can test the
electric field and
the
magnetic
field
radiation
at
the
same
time
;
Sound-light alarm,when the test result
exceeds the safe value,the
instrument
will
alarm
automatically
;
Data locking,one-key lock of the radiation value;
LCD graphic display of the radiation value trend;
Radiation assessment,remind you whether the
radiation value is
safe
or
not
;
Fashionable design,easy on-hand operation,it
is easy to move or
make
field
measurement
.
Electromagnetic radiation monitoring
:
House and apartment,office,outdoor and
industrial site;
Electromagnetic radiation test
:
Mobile phone, computer, TV set, refrigerator and
high voltage cable radiation test;
Radiation protection product test
:
Test effects of radiation-proof clothes, radiation-
proof film and other prevention articles.
X-ray radiation index
:
★★★★★
Electric
hair
drier
radiation
index
:
★★★★★
Electric
blanket
radiation
index
:
★★★★
Microwave
oven
radiation
index
:
★★★★
Computer
monitor
and
host
radiation
index
:
★★★
Mobile
phone
radiation
index
:
★★
TV
set
radiation
index
:
★★
Keyboard
and
mouse
radiation
index
:
★
Copying
machine
and
printer
radiation
index
:
★
Security
check
radiation
index
:
★
Electromagnetic
Radiation
Tester
AVG
VPP
HOLD
BEEP
Version
：
GM3120-EN-00
Model:
GM3120
Electromagnetic
Radiation
Tester
Instruction manual
Radiation survey meter can test electric field
radiation and magnetic field emission to reach
the optimal test result. It is used to test and learn
electromagnetic radiation situation indoor and
outdoor. It is equipped with a built-in
electromagnetic radiation sensor, which can
display the radiation value on LCD digital display
after processing by the control micro-chip. You
can make reasonable processing or taking
effective prevention measures toward the
electromagnetic radiation according to the test
result.
Influence and harms of electromagnetic
radiation on human body:
1.Being one of the causes of leukemia for
children;
2.Can cause cancer and accelerate proliferation
of cancer cells;
3.Can cause direct harm to human genital
system, nervous system and immune system;
4.Can cause mental disabilities of children and
diminution of vision, affect tissue development
and skeletal development of children;
5.Can cause diminution of hematopoietic
function of livers and even cause amotio retinae;
6.Being one of the main causes of cardiovascular
disease and diabetes;
7.Having bad influence on human visual system.
Moreover, strong electromagnetic radiation
may influence and destroy original bioelectric
current and biomagnetic field in human body and
cause abnormity of the original electromagnetic
field in human body. The elderly, children and the
pregnant are susceptible to electromagnetic
radiation.
Artificial electromagnetic radiation sources
include all kinds of electric appliances and
devices. By fair use of household appliances and
taking reasonable precautious measures,
electromagnetic radiation can be effectively
prevented and reduced.
II
.
Functions
and
features
VII
.
Technical
parameters
I
.
Introduction
III
.
Range
of
application
VI
.
Radiation
indexes
2
1
3
5
6
V
.
Operating
instructions
4
VI
.
LCD
display
and
key
function
1
.
LCD full-screen display: see the following figure.
2. Names of components: see the following figure.
A. Inductive zone at front end
B.LCD display
C. Average/peak value
Unit
Precision
Range
Alarm threshold value
Reading display
Testing bandwidth
Sampling time
Test mode
Over range indication
Operating temperature
Operation humidity
Operating voltage
Power supply
Size
Weight
Electric field
V
/
m
1V
/
m
1V
/
m
-
1999V/m
40V
/
m
Magnetic field
μ
T
0
.
01
μ
T
0
.
01
μ
T
-
19
.
99
μ
T
0
.
4
μ
T
3-1/2-digit LCD
About 0.4 seconds
Bimodule synchronous test
LCD displays “1”
relative
humidity
＜
80
%
battery
5Hz—3500MHz
0
℃
~50
℃
9V
6F22 9V
63
.
6
*
31
*
125
.
8mm
146g
B
A
C
D
E
F
Special declaration:
Our company reserves the right to modify the
product design and the instruction. We will not
give further notice for any changes!
D. Data locking/beep
E. Power
F. Battery door
Reference standards:
GB8702-1988 Regulations for Electromagnetic
Radiation Protection
HJ/T10.3-1996 Environmental Impact Assessment
Methods and standards on Electromagnetic Radiation
GB9175-88 Hygienic Standard for Environmental
Electromagnetic Waves