LaserLiner SoundTest-Master Manual Del Usuario página 9

– 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.
3
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.
4
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
Auditory threshold
Quiet residential area
Low-level conversation, quiet office
Normal conversation
Heavy road traffic
Shouting, screaming
Pneumatic hammer (10 m away)
Start-up of a jet aircraft (100 m away)
Pain threshold
SoundTest-Master
Sound pressure level in dB (A)
0
30 to 40
40 to 50
50 to 60
70 to 80
80 to 85
90 to 100
120 to 130
140
09
EN