Tenma TEN01073 User manual

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Ⅰ. 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℃
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.
Safety symbols
Meter is protected throughout by double insulation or
reinforced insulation.
When servicing, use only specified replacement parts.
Comply with EMC
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 unit conforms to the IEC61672-1 type 2, ANSI S1.4 type
2 for Sound Level Meters.
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 4-digits LCD.
With two equivalent weighted sound pressure levels, A
and C.
Ⅲ. Specifications
Standard applied : IEC61672-1 type 2, ANSI S1.4
type 2
Frequency range : 31.5Hz~8KHz
Measuring level range : 30~130dB
Frequency weighting : A/C
Microphone : 1/2 inch electret condenser microphone
Calibration : Electrical calibration with the internal
oscillator (1kHz sine wave)
Display : LCD
Digital display : 4 digits
Resolution: 0.1dB
Display Up data: 0.5 sec.
Time weighting : FAST(125mS), SLOW(1 sec.)

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Level ranges : Lo: 30-100dB
Hi : 60-130dB
Accuracy : + 2dB (under reference conditions)
Alarm function : “OVER” is show when input is out of
range
Maximum hold : Hold readings the Maximum Value,
with decay < 1dB/3minutes.
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℃(32 to 104oF)
Operation humidity : 10 to 90%RH
Storage temperature : -10 to 60℃( 14 to 140oF)
Storage humidity : 10 to 75%RH
Dimensions : 210(L)X55(W)X32(H)mm
230g(including battery)
Weight :9V battery, carrying case, Instruction
manual..
V. Name and Functions

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BAT
F
dB
S
①Windscreen
If you operate at wind speed over 10m/sec, please put
protective accessories in front of the microphone.
②Display
SYMBOL
FUNCTION
LCD
4digits
MAX
Maximum Value hold
OVER
Over range
F
Fast response
S
Slow response
A
A-Weighting
C
C-Weighting
Lo
Low Range (30~100dB)
Hi
High Range (60~130dB)
BAT
Low-Battery
③Power ON/OFF button
Turn the meter power ON/OFF
④MAX button MAX
The max. Hold position is used to measure the maximum
level of sounds. The maximum measured level is up dated
continuously. Press once again the button, will release the
hold and allow a further measurement.
⑤A-weighting / C-weighting select button A/C
A: A –Weighting. For general sound level measurements.
C: C –Weighting. For checking the low- frequency content
of noise.
(If the C-Weighted level is much higher than the
A-Weighted level, then there is a large amount of
low-frequency noise)
⑥Time weighting select button F/ S
F (fast response): for normal measurements (fast varying
noise)
S (slow response): for checking average level of
fluctuating noise
⑦Level range select button Lo/Hi
Lo: 30~100dB; Hi: 60~130dB
When “OVER” is indicated, the ranges switch to another
range for measurement.

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⑧Hold button HOLD
The hold function freezes the reading in the display.
⑨Microphone
1/2 inch Electret Condenser microphone
⑩Battery Cover
V. Measurement Preparation
(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.
(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 the 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) Turn on power and select the desired response Time and
weighting. If the sound source consists of short bursts or
only catching sound peak, set response to FAST. To
measure average sound, use the slow setting.
Select A- weighting for general noise sound level and
C-weighting for measuring sound level of acoustic
material.
(3) Select desired Level
(4) Hold the instrument comfortably in hand or fix on tripod
and point the microphone at the suspected noise source,
the sound pressure level will be displayed.
(5) When MAX (maximum hold) mode is chosen. The
instrument captures and holds the maximum noise level
for a long period using any of the time weightings and

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ranges.
(6) When HOLD (data hold )mode is chosen.The hold
function freezes the reading in the display. Press the
HOLD button momentarily to activate or to exit the HOLD
function
(7) Turn OFF the instrument and remove and remove
battery when not in use.
VIII．Calibration Procedures
Using a standardAcoustic Calibrator (94dB, 1kHz Sine wave)

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(1)Make the following buttons and function switch settings.
Display: dB,A, Hi or Lo, F
Function: A-Weighting
Response Time: FAST
Level range: 30 to 100dB(Lo) or 60 to 130dB(Hi)
Measurement mode: MAX Hold and Data Hold Mode
function disable.
(2) Insert the microphone housing carefully into the insertion
hole of the calibrator.
(3) Open battery cover and remove the battery to adjust the
CAL94dB potentiometer of the unit. The level display will
indicate the desired level.
Our products are all well calibrated before shipment.
Recommended Recalibration cycle:1 year.
Sound Level Meter
TEN01073

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Contents
Title Page
I. Safety Information..............................................1
II. General Description............................................1
III. Specifications................….................................. 2
IV. Name And Functions.......................................... 4
V. Measurement Preparation .................…............ 7
VI. Operating Precautions....................................... 7
VII. Measurement ...................................................... 8
VIII．Calibration Procedures..................................... 10
INFORMATION ON WASTE DISPOSAL FOR
CONSUMERS OF ELECTRICAL & ELECTRONIC
EQUIPMENT.
When this product has reached the end of its life it must be
treated as Waste Electrical & Electronic Equipment (WEEE).
Any WEEE marked products must not be mixed with general
household waste, but kept separate for the treatment,
recovery and recycling of the materials used. Contact your
local authority for details of recycling schemes in your area.
Made in China PR2 9PP
PO Box 13362 Dublin 2