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 Extech Sound Level Calibrator For Q3400 & Q337 and microphone widths 0.5 inch or 1.0 inch
94dB or combination 94dB/114dB, 1kHz Professional Calibrator for 0.5” or 1.0” Microphones.
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 Accoustical Calibrator for Sper Scientific Sound Meter, 2 Point
The Sper Scientific Accoustical Calibrator is used to calibrate all Sper Scientific digital sound meters and any sound meter with 1" or 1/2" microphone. It features a built in battery check and includes a carry case.
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 Extech 407744 Sound Level Calibrator - 94dB
This is a 1kHz Professional Sound Level Calibrator for 0.5" or 1.0" Microphones. The unit comes complete with two 9V batteries, a carrying case, and a screwdriver.
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Extech 407744 Sound Level Calibrator - 94dB
Item #: 105900
Manufacturer: Extech Instruments
Manufacturer Item #: 407744
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Use this 94 dB Sound Level Calibrator by EXTECH on 0.5" or 1.0" microphones.
Features & Applications:
This is a 1kHz Professional Sound Level Calibrator for 0.5" or 1.0" Microphones. The unit comes complete with two 9V batteries, a carrying case, and a screwdriver.
Features:
- Calibrates and verifies Sound Level Meter operation
- Battery test position with battery status LED indicates if battery is good
- For use on Sound Level Meters with 0.5" or 1.0" microphones
- Total harmonic distortion (THD) <2% at 94dB
- Durable die-cast, aluminum housing
- 1kHz sine wave at 94dB is generated to an accuracy of 5% (frequency) and ±0.8dB
- Complete with two 9V batteries, carrying case, and screwdriver
Spec Summary:
| Specifications |
Range |
Accuracy |
| Frequency |
1000 Hz |
±5% |
| Sound Pressure Level |
94 dB (407744) |
±0.5dB (94dB), ±1dB (114dB) |
| Distortion |
<2% Total Harmonic Distortion |
| Operating Temperature |
32 to 122°F (0 to 50°C) |
| Power Supply |
Two Heavy duty, alkaline 9V battery |
| Power Consumption |
Approx. 10mA DC |
| Dimensions |
2.2" diameter x 5.6" long (50 x 127mm) |
| Weight |
0.75 lbs. (340g) |
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