Tenma 72-2680 User manual

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Model: 72-2680
Sound Level Meter Calibrator

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Please read these instructions carefully before use and retain for future reference.
• Please operate according to this manual, otherwise the calibration 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 the calibrator dry and avoid severe vibration.
• Replace the batteries as soon as indicated by the low battery warning.
• 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 calibrator.
• To prolong battery life turn off the calibrator after use.
IMPORTANT SAFETY INFORMATION
WHAT’S INCLUDED
FEATURES
• Sound level meter calibrator and batteries
• 0.5” microphone adaptor
• Screwdriver
• Instruction manual
• Storage case
• This Sound Level Meter Calibrator has been designed to meet the measurement
requirements of safety Engineers, Health, Industrial safety ofces and sound quality
control in various environments.
• 94dB or 114dB calibration settings.
• Can be used with 0.5” or 1.0” diameter sound level meter microphones.
• Low battery indicator.
Battery Cover/Compartment
Off / 94dB / 114dB Switch
0.5” Mic. Adapter Sleeve
Coupler Sleeve
Power/Low Battery Indicator

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• If the sound level meter to be calibrated has a 0.5” microphone, t the supplied
adaptor sleeve to the coupler on the Calibrator. 1.0” microphones t directly without
the adapter.
• Insert the microphone of the meter to be calibrated carefully all the way into the
coupler section of the Calibrator.
• On the sound meter to be calibrated, set the range suitable for either 94dB or
114dB.
• Set the Calibrator to either 94dB or 114dB as required.
• The Calibrator will output a pure 1000Hz tone at the specied level.
• Adjust the calibration potentiometer on the sound level meter (screwdriver supplied)
until the sound level meter displays precisely the correct level (see operation
manual for the sound level meter for detailed instruction).
• When calibration is complete, switch off both devices and remove the sound level
meter from the calibrator.
CALIBRATION FUNCTION
Sound Level Meter Calibrator
MAINTENANCE
Changing the battery
• Under normal operation, when the Calibrator is switched on the Power/Low Battery
Indicator will illuminate to indicate the battery voltage is normal.
If the Battery Indicator does not light up, then the batteries are under the minimum
required voltage for correct operation and should be replaced.
• To install or change the 9V batteries, open the battery compartment. Replace only
with the same type of batteries noting the correct polarity.
• Replace the battery cover before use.
Cleaning the casing
• Wipe using a damp cloth or sponge. Do not use solvents as these may damage the
casing. Do not immerse in water.

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INFORMATION ON WASTE DISPOSAL FOR CONSUMERS OF
ELECTRICAL & ELECTRONIC EQUIPMENT
These symbols indicate that separate collection of Waste Electrical and Electronic Equipment
(WEEE) or waste batteries is required. Do not dispose of these items with general household
waste. Separate for the treatment, recovery and recycling of the materials used. Waste batteries
can be returned to any waste battery recycling point which are provided by most battery retailers.
Contact your local authority for details of the battery and WEEE recycling schemes available in
your area. Made in China. PR2 9PP
Man Rev 1.0
SPECIFICATION
Frequency 1000Hz ±2%
Calibration Sound Pressure
Level
94dB ± 0.75dB
114dB ± 0.9dB
Suitable Microphone Type 1“ mic. & 0.5“ mic using adaptor.
Distortion 94 dB range harmonic distortion ± 2%
114 dB range harmonic distortion ± 5%
Operating Temperature 0 to 50oC (32 to 122oF)
Power Supply DC 9 V battery (006P, 6F22) x 2 off
* Recommend use of Alkaline or heavy duty type
Power Consumption Approx. DC 7mA
Battery Check Build in low battery indicator
Weight Approx. 350g / 0.77lb (include the batteries)