PIN:
110401107881 X
UT353
Mini Sound Meters
Operating Instruction
1.1ntroduction
UT353
is
a stable, safe, reliable mini sound meter, widely
used
in
noise detection, quality control, health control,
environmental noise measurement
in
factory, traffic, home
audio and other places.
This operating manual includes relevant safety information
and warnings.
Please read this manual carefully and
observe
all cautions.
.&.
Warning:
Before using the product, please read the operation
rules
carefully.
2.0ut
of
the Box
Open the packing box and take out the meter.
Please check carefylly if any items are missing or
damaged.
1 Wind-proof
ball---------------1
2.
Operating manual-----------1
3.0peration
Safety
This product strictly follows the requirements
of
"General
specification
for
sound
level
meters"
in
design
and
production.
1.Please check the
meter
and the accessories before
using
and
beware
of
any
damage
or
abnormal
phenomenon. If you find the case is damaged or the
LCD
shows nothing, or
you
consider that the meter could
not work properly anymore, please stop using
it.
2.0bserve the operating instructions while measuring.
3.00
not open the meter at will or change internal wiring
to
avoid damages to the mater.
4When
the
LCD
displays "COil", replace the battery timely.
Remove the battery if the meter is not used for a
long
time.
5.00
not store or use the meter
in
high temperature, high
humidity,
flammable.
combustible
or
strong
electromagnetic
environment.
6.Please use soft cloth and neutral detergent
to
clean the
case for maintenance. Do not use grinding agent and
solvent
to
avoid
case
corrosion
and
damage to the
meter.
4.Product Outlook
1
Wind-proof
ball
I 2 I
Microphone
3 Meter case
I 4 I
LCD display
5
Function keys
UNI-T.
Wind
(}1
~i)
Figure 1
5.
Display Interface
CD
®
HOLD
111111'1
®
J.O.O.O::
®
®
®
FAST
SLOW
(j)
Figure 2
1
Maximum measurement
5
A weighted
2
Minimum measurement
6
C weighted
3 Data hold 7
Slow response rate
4
Low battery
8
Fast response rate
9 Measurement value
6.
Key Function and Setup
1.
ON/OFF:
Short press once
to
start
up;
short press again
to
power
off.
Note:
Product's auto power off feature can
be
disabled:
Press and
hold
"HOLD" and
then
piess "ON/OFF" key
to
enable/disable auto power
off,
LCD
will
display "APO OFF'
to
indicate status.
2.
FAST/SLOW:
Sampling
time: When measuring, pressing this key
to
select between fast time of 125ms and slow time of 1
s.
3.
MAX/MIN:
Pressing
this key to select maximum, minimum and
normal
value measurement; when maximum or minimum
measurement
is
selected, the meter always shows the
maximum reading or the minimum reading.
4. HOLD/BL:
HOLD:
Short
press
this
key
once
to
hold
the
measurement: short press the key once again to exit
data
hold and continue normal measurement.
BL:
long press this key
to
turn on backlight, and long
press it again to turn off backlight.
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