HTI HT-80A User manual

Sound Level Meter
1. Safety information
Read the following safety information carefully before
attempting to operate or service the meter.
Use the meter only as specified in this manual; otherwise,
the protection provided by the meter may be impaired.
●Environment conditions
1 Altitude up to 2000 meters
2 Relatively humidity 90% max.
3 Operation Ambient 0~40°C
● Maintenance & Clearing
1 Repairs or servicing not covered in this manual should
only be performed by qualified personnel.
2 Periodically wipe the case with a dry cloth. Do not use
abrasives or solvents on this instruments.
II. General Description
Thank you for using our Sound Level Meter. To ensure that
you can get the most from it, we recommend that you read
and follow the manual carefully before use.
This Sound Level Meter has been designed to meet the
measurement requirements of safety Engineers, Health,
Industrial safety offices and sound quality control in
various environments.
●Ranges from 30dB to 130dB at frequencies between
31.5Hz and 8 KHz.
●Display with 0.1dB steps on a 3 digits LCD.
●With the equivalent weighted sound pressure levels,.A
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HT-80A

III. Speciications
Frequency range :31.5Hz~8KHz
Measuring level range :30~130dB
Frequency weighting :A
Microphone :1/2 inch electret condenser microphone
Display :LCD
Digital display :3 digits
Resolution :0.1dB
Display Up data :0.5sec.
Time weighting :FAST(125mS)
Accuracy :±1.5dB (under reference conditions)
Alarm function :"OL" is show when input is out of range
Auto power off :Meter automatically shuts down after
approx. 15 minutes of inactivity.
Power supply :One 9V battery, 006P or IEC 6F22 or
NEDA 1604.
Power life :About 50hrs(alkaline Battery)
Operation temperature:0 to 40°C(32 to 104°F)
Operation humidity :10to 90%RH
Storage temperature :-10 to 60°C(14 to 140°F)
Storage humidity :10 to 75%RH
Dimensions :170*58*35mm 107g(N/W)
Package :9V battery, carrying case, Instruction
manual.
IV. Name and Functions
2 3
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3
4

The MAX/MIN button is used to measure the maximum and
minimum level of sounds.Press the MAX/MIN button two
seconds,the meter will be go on measuring.
5)On/Off button
6)Tripod hole：fixed the meter on the tripod
7)Battery cover
V.Measurement Preparaion
(1) Battery loading
Remove the battery cover on the back and put in one
9V Battery.
(2) Battery Replacement
When the battery voltage drops below the operating
voltage, mark"BAT"appears. If it appears, battery
should be replaced with new one.
VI. Operating Precautions
(1) Wind blowing across the microphone would bring
additional extraneous noise.
Once using the instrument in the presence of wind, it is
a must to mount the windscreen to not pick up
undesirable signals.
(2) To achieve more accurate measurement, use an
extension cable to separate the Microphone from the
main body so that the effect of unexpected sound
reflection can be eliminated.
(3) Calibrate the instrument before operation if the
instrument was not in use for a long time or operated at
bad environment.
1) Windscreen
If you operate at wind speed over 10m/sec, please put
protective accessories in front of the microphone.
2)Display
SYMBOL FUNCTION
LCD 3digits
MAX/MIN Maximum and Minimun Value
OVER Over range
dBA unit
HOLD Keep the reading
BAT Low-Battery
3)"HOLD" button
Data Hold button: Press and hold the Button to trun on or off
data hold function
The hold function freezes the reading in the display.
4) "MAX/MIN"button
4 5

(4) Do not store or operate the instrument at high
temperature and high humidity environment.
(5) Keep microphone dry and avoid severe vibration.
(6) Please take th e battery and keep the instrument in low
humidity environment. When not in use.
VII.Measurement
1 Open battery cover and install a 9-volt battery in the
battery compartment.
2 Hold the instrument comfortably in hand or fix on tripod
and poin the microphone at the suspected noise, the
sound pressure level will be displayed.
3 When MAX(maximum)mode is chosen. The instrument
wil show the maximum and minimum reading on the
display.
4 When HOLD (data hold) mode is chsen. The hold
function freezes the reading in the display. Press the
HOLD button momentarily to activate or to exit the
HOLD function
5 Turn OFF the instrument and remove and remove
battery when not in use.
6
Dongguan Xintai Instrument Co.,Ltd.
Add: Building F, No. 22 Yuhua Street, Hongye Industrial Zone,
Tangxia Town, Dongguan City, Guangdong Province
Postcode:523710
Tel:[phone]
Fax:[phone]
Website:www.hytechcn.com.cn
www.xintest.com.cn www.xintest.en.alibaba.com