Tenma 72-942 User Manual

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Model: 72-942

Sound Level Meter

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1. Windscreen.
If you operate at wind speed over 10m/sec, please
put protective accessories in front of the microphone.

2. LCD display.

3. Power ON/OFF button.

4. Backlight button ON/OFF.

5. Weighting A/C-Weighting Select Button.

A-Weighting. For general sound level measurements.
C-Weighting. For checking the low frequency content
of noise.

Note: If the C-Weighted level is much higher than the
A-Weighted level, then there is a large amount of low­frequency noise.

6. Time Weighting Select Button.

F (fast response): for normal measurements (fast
varying noise).

S (slow response): for checking average level of uctuating noise.

Please read these instructions carefully before use and retain for future reference.

• Please operate according to this manual, otherwise the protection provided by the
device will be impaired or fail.

• Check the condition before using. If you nd any cracking, breakage, damage or
abnormality, or you consider the device broken, stop using the device immediately

• Do not store or operate the instrument at high temperature and high humidity
environment.

• Keep microphone dry and avoid severe vibration.

• Replace the batteries as soon as the low battery indicator appears on the display.

• Remove dead batteries from the meter or if it is not going to be used for a long time.

• Never mix old and new batteries together, or different types of batteries.

• Never dispose of batteries in a re, or attempt to recharge ordinary batteries.

• Before replacing the battery, turn off the sound level meter.

• To prolong battery life turn off the sound level meter after use.

IMPORTANT SAFETY INFORMATION

WHAT’S INCLUDED

FEATURES

FUNCTIONS

• Sound level meter with foam windshield

• 9V battery, 006P or IEC 6F22 or NEDA 1604. (included)

• Instruction manual

• This Sound Level Meter has been designed to meet the measurement requirements

of safety Engineers, Health, Industrial safety ofces and sound quality control in

various environments.

• This unit conforms to the IEC61672-1 type 2, ANSI S1 .4 type 2 for Sound Level
Meters.

• Ranges from 30dB to 130dB at frequencies between 31.5Hz and 8kHz.

• Display with 0.1 dB steps on a 4-digits LCD.

• Two equivalent weighted sound pressure levels, A and C.

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