Code: 34302
Operating
Instructions
Ref:.. \operat98\instructions 18\34302.qxp 05-01-18
©York Survey Supply Centre 2018
Digital Sound 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
2. Calibration using internal oscillator.
a) Make the following switch settings.
RANGE: Hi
RESPONSE: F
FUNCT: A
b) Adjust the unit to the readout.
6. Measurement Preparation
1. Battery Loading:
Remove the battery cover on the back and put in one PP3 9V battery (53090).
Note: Make sure battery polarity is
correct.
2. Battery Replacement:
When the battery voltage drops below the operating voltage, “BT” mark will appear in the display and battery
should be replaced with a new one.
7. Operating Precautions
1. Wind blowing across the microphone would bring additional extraneous noise. Once using the instrument in the
presence of wind, it it is a must to mount the windscreen in order not to pick up undesirable signals.
2. Calibrate the instrument before operation if instrument not in use for a long time or operated at bad
environment.
3. Do not store or operate the instrument at high temperature and humidity environment for a long.
4. Keep microphone dry and avoid severe vibration.
5. Please take out the battery and keep the instrument in low humidity environment when not in use.
8. Measurement
1. Open the battery cover and install a PP3 9 volt battery (53090) in the battery compartment.
2. Turn on power and select the desired response and weighting. If the sound source consists of short bursts or
only catching sound peak, set RESPONSE to FAST. To measure average sound level use the slow setting.
Select A-weighting for general noise sound level and C-weighting for measuring sound level of acoustic material.
3. 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.
4. When MAX HOLD mode is chosen. The instrument captures and holds the maximum level indication.
5. Turn OFF the instrument when not in use.
