Code: 343010
Operating
Instructions
Ref:.. \operat98\instructions 18\343010.qxp 05-01-18
©York Survey Supply Centre 2018
Digital
Sound Level Meter
Prospect House, George Cayley Drive, Clifton Moor, York, England YO30 4XE
Tel: +44 (0) 1904 692723 Fax: +44 (0) 1904 690385
E-Mail: [email protected] www.yorksurvey.co.uk
VII. Operating Precautions
(1) Wind blowing across the microphone would bring 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 in a bad environment.
(4) Do not store or operate the instrument at high temperature and high humidity envi-
ronments.
(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.
VIII. Measurement
(1) Open battery cover and install a 9V battery in the battery compartment.
(2) Turn on power and select the desired response time and weighting. If the sound source is 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 ma-
terial.
(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
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 the battery when not in use.
