Measurement Considerations; Specifications - Extech Instruments 407730 User Manual

Measurement Considerations

Specifications

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1. Wind blowing across the microphone increases the noise measurement. Use the supplied
windscreen to cover the microphone when applicable.
2. Calibrate the instrument before each use if possible. Especially if the meter has not been used
for a long period of time.
3. Do not store or operate the instrument in areas of high temperature or humidity.
4. Keep meter and microphone dry.
5. Avoid severe vibration.
6. Remove the battery when the meter is to be stored for long periods of time.
Display LCD with bargraph
Microphone 10mm (0.5 ) Electret condensor
Measurement Bandwidth 300Hz to 8KHz
Measurement Range 40 to 130dB (A wtg), 45 to 130dB (C wtg)
Frequency weighting A and C (selectable)
Accuracy / Resolution ± 2dB @1kHz (under reference conditions) / 0.1dB
Response time Fast: 125 milliseconds / Slow: 1 second
Calibration source 1KHz sine wave @ 94 or 114dB
AC output 0.707Vrms full scale
Power 4 AAA Batteries
Battery life 30 hours (typical); low battery indicator alerts user
Automatic power off After approx. 20 minutes
Operating temperature 0 to 50
Operating humidity 10 to 90% RH
Storage temperature -20 to 60
Dimensions/weight 230 x 57 x 44mm (9 x 2.3 x 1.7 ) / 172g (6oz)
Copyright © 2014 FLIR Systems, Inc.
All rights reserved including the right of reproduction in whole or in part in any form
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