Laserliner 082 070 SoundTest-Master Noise Meter Instruction Manual
- June 5, 2024
- Laserliner
Table of Contents
Laserliner 082 070 SoundTest-Master Noise Meter
Completely read through the operating instructions, the “Warranty and
Additional Information” booklet as well as the latest information under the
internet link at the end of these instructions. Follow the instructions they
contain. This document must be kept in a safe place and passed on together
with the device. 
Function/Application
The sound level meter is used to measure sound level with the frequency
weighting filters based on the standard curves dB A and dB C as well as two
time weighting factors (fast/slow). An internal memory stores the data
measured during long-term measurements and the internal interface enables real
time logging on a PC. 
- Microphone/Wind guard
- ON/OFF
- Max. function
- dB A, dB C/Record
- Time weighting/ Memory readout
- Display lighting/ Real time recording
- Adjust measuring range
- 9 V DC power supply connection
- DC/AC output
- Calibration screw
- PC interface
- Data transfer
- Analogue scale
- Time weighting
- Max. measuring range
- dB A/dB C
- Unit
- Record measured values
- Current measured value
- Time
- Min. measuring range
Safety instructions
- The device must only be used in accordance with its intended purpose and within the scope of the specifications.
- The measuring tools and accessories are not toys. Keep out of reach of children.
- Do not expose the device to mechanical stress, extreme temperatures, moisture or significant vibration.
Calibration
The meter needs to be calibrated and tested on a regular basis to ensure it
produces accurate measurement results. We recommend carrying out calibration
once a year.
Setting date/time (setup)
The current data and time should be set before using the device for the first
time to ensure stored measured values are assigned for subsequent evaluation.
Press and hold the “MAX” button while switching on. You can change the value
with the “LEVEL” buttons and move to the next value with the “MAX” button.
Date format: Year/month/day. Switch off the device to store the setting.
Sound pressure level (dB)
This device registers sound in a similar way to the human ear. The integrated
microphone receives the incoming sound waves and converts them into electrical
signals. Human hearing involves specific auditory curves. The greater the
sound pressure, the louder the sound is perceived to be. The higher the
frequency, the higher the pitch of the sound is perceived to be. To ensure
that measurements are aurally compensated, this measuring device is fitted
with filters. The A-weighting (dB A) replicates the frequency response
associated with human hearing and is used for the majority of industrial noise
and environmental noise measurements.
The C-weighting is used in industrial measurements.
After switching on the device, correspondingly switch over
the dB A/dB C weighting filter by pressing the “A/C” button.
Powerful wind noises (> 10m/s) can affect the measured value. In such cases, you should use the wind deflector supplied with the product.
Sound source Sound pressure level in dB (A)
Auditory threshold| 0
Quiet residential area| 30 to 40
Low-level conversation, quiet office| 40 to 50
Normal conversation| 50 to 60
Heavy road traffic| 70 to 80
Shouting, screaming| 80 to 85
Pneumatic hammer (10 m away)| 90 to 100
Start-up of a jet aircraft (100 m away)| 120 to 130
Pain threshold| 140
Measuring range
Select the corresponding measuring range in the device to achieve the required
degree of accuracy of measurement results. In addition to the option of
selecting the measuring range manually, the device also features an automatic
range detection function. You can set the required measuring range by pressing
the “LEVEL” buttons. To set the automatic measuring range, press and hold the
“LEVEL 5” button until the measuring range 30…130 dB appears in the display.
The following alert is shown on the display when the measured values are outside the preset measuring range:
UNDER
| The measured value is below the measuring range. Correct the measuring
range downward.
---|---
OVER
| The measured value is above the measuring range. Correct the measuring range upward.
Use the automatic measuring range to gauge the corresponding range. Then switch over to the determined manual measuring range as greater accuracy is achieved in this range. Ideally, the measured value should be in the middle of the defined measuring range.
Time weighting (FAST/SLOW)
The device features two different measuring intervals. “FAST” time weighting should be set for signals that change quickly. “SLOW” time weighting should be set for continual signals that change slowly. The “FAST” measuring interval is 125 milliseconds while the “SLOW” measuring interval is 1 second. The time weighting can be changed at any time during the measurement by pressing the “FAST/SLOW” button.
Always make sure the time weighting is set correctly to match the signal to be
measured. If
“SLOW” weighting is used for signals that change fast the measurement result
may be falsified as peak levels may not be recorded.
MAX function
The MAX function is activated by pressing the “MAX” button. The measured value
currently displayed corresponds to the largest measured value. Lower measured
values are not displayed. Press the “MAX” button again to deactivate the
function.
Record measured values (RECORD)
An internal memory makes it possible to record measured data during a
measurement session. The stored data can be read out for subsequent
evaluation. The memory can hold up to 16,000 measurements. Press the “RECORD”
button for 2 seconds to start recording. “RECORD” appears at the bottom of the
display. Press the button again for 2 seconds to stop recording. “FULL” is
shown on the display as soon as the memory in the device is full.
Clear memory
Press and hold the “LEVEL 5” button for 3 seconds to completely delete the
data in the memory. “CLR” appears on the display. Press and hold the “LEVEL 6”
button for 3 seconds to confirm that you wish to delete the data. The “CLR”
display then flashes for a short time. The delete operation is concluded as
soon as the normal display view appears again.
Transfer stored data (SEND MEMORY)
The software on the supplied CD must be installed on your PC before the stored
data can be read out and evaluated. Place the CD in the drive of your PC,
start the installation program and follow the installation routine.
After successful installation, start the application. Then connect the
supplied transfer cable to the PC interface on the device. Connect the other
end of the cable to a free port on your PC. Press and hold the “SEND MRMORY”
button for 3 seconds to transfer the data. “SENDING MEMO” appears on the
display and goes out again as soon as data transfer has been completed.
Refer to the PDF file on the CD for information on installation and operation of the supplied software.
Real time recording (SEND DATA)
It is possible to transfer the data to the PC in real time when conducting
extensive measurements where there is not sufficient space in the internal
memory for the recorded data. Data storage takes place directly at the PC. The
measured data can also be displayed and observed directly on the PC monitor.
Connect the device to the PC as described under Point 10 and start the
program. Press and hold the “SEND DATA” button for 3 seconds to start data
transfer. “SENDING” appears on the display. All recorded data are now shown in
real time on the PC. Press the “SEND DATA” button again for 3 seconds to stop
data transfer.
DC/AC output
The device is equipped with analogue signal outputs. The dB A or dB C signal
is output via the CD output for connection to a chart recorder for instance.
The unfiltered signal that is recorded directly from the microphone is made
available at the AC output for a possible connection to an oscilloscope.
Calibration and adjustment
The calibration can be checked by means of a sound pressure level calibrator
in accordance with IEC/EN 60942:2003ff. The calibrator defines a target volume
of 94 dB. The device should be checked in the 80…130 dB setting and show 94 dB
plus the tolerance range on the display. If the displayed value deviates from
the target volume, you can adjust the sound level meter to the required 94 dB
by means of the calibration screw.
Power pack operation
It is recommended to operate the device with a controlled power pack (9 V, > =
500 mA DC, DC power plug 3.5 x 1.3 mm). High quality control and filtering of
the power pack is required in order to rule out possible interference on the
measurement signal (ripple <= 100 mV).
Mounting on tripod
For certain measuring tasks it may be of advantage to secure the device on a
tripod. To do so, screw the device on to a tripod with a 1/4″ connection. Undo
the device by turning in anticlockwise direction.
Technical data
Manual measuring range| 30 dB … 80 dB
40 dB … 90 dB
50 dB … 100 dB
60 dB … 110 dB
70 dB … 120 dB
80 dB … 130 dB
Automatic measuring range| 30 dB … 130 dB
Accuracy| ±1.5 dB
Dynamic range| 50 dB
Test condition| 94 dB, 1 kHz sinusoidal signal
Frequency range| 31.5 Hz … 8 kHz
Measuring interval| Fast: 125 ms, Slow: 1 s
Resolution of digital display| 0.1 dB, Measuring rate: 2 measurements/second
Resolution of analogue display| 1 dB, Measuring rate: 20 measurements/second
Microphone| Electret microphone
Data memory| 16,000 measurements
AC voltage output| 0.70 Vrms at full deflection, approx. 600 ohm output
impedance
DC voltage output| 10 mV/dB, approx. 100 ohm output impedance
Interface| Optoinsulated RS 232
Power supply| 6 x 1.5 V AAA
Power pack connection| 9 V DC, < 100 mV ripple, <= 150 mA current consumption
Operating temperature| 0 °C … 40 °C (10 % … 80 % relative humidity)
Storage temperature| -10 °C …60 °C (10 % … 70 % relative humidity)
Dimensions (W x H x D)| 80 x 245 x 35 mm
Weight (including batteries)| 350 g
EU directives and disposal
This device complies with all necessary standards for the free movement of
goods within the EU.
This product is an electric device and must be collected separately for
disposal according to the European Directive on waste electrical and
electronic equipment.
Further safety and supplementary notices at:
http://laserliner.com/info?an=soutemas
SERVICE
Umarex GmbH & Co. KG
– Laserliner –
Möhnestraße 149, 59755 Arnsberg, Germany Tel.: +49 2932 638-300, Fax: +49 2932
638-333
Umarex GmbH & Co. KG Donnerfeld 2
59757 Arnsberg, Germany
Tel.: +49 2932 638-300, Fax: -333
www.laserliner.com