Product Description
Extech 407744 94dB Sound Calibrator
This 1kHz, 94dB professional sound calibrator for 0.5″ or 1.0″ microphones calibrates and verifies sound level meter operation. Battery test position with battery status LED indicates if battery is good. Durable die-cast aluminum housing generates a 1kHz sine wave at 94dB to an accuracy of 5% (frequency) and ±0.5dB (94dB). Meets IEC standard 60942 1997-11. Complete with two 9V batteries, carrying case, and screwdriver.
Features Extech 407744 94dB Sound Calibrator
- Calibrates and verifies Sound Level Meter operation
- For use on Sound Level Meters with 0.5″ or 1.0″ microphones
- Total Harmonic Distortion (THD) <2% at 94dB
- Meets IEC standard 60942 1997-11
- Complete with two 9V batteries, carrying case, and screwdriver
Model 407744
- Battery test position with battery status LED indicates if battery is good
- 1kHz sine wave at 94dB is generated to an accuracy of 5% (frequency) and ±0.8dB
Model 407766
- LED indicator lights up when power is on
- Level position to select 94dB or 114dB
- 1kHz sine wave at 94dB/114dB is generated to an accuracy of 5% (frequency) and ±0.8dB • 3 position switch (OFF/94dB/114dB)
Specifications Extech 407744 94dB Sound Calibrator
| Specifications | Range | Accuracy |
|---|---|---|
| Frequency | 1000 Hz | ±5% |
| Sound Pressure Level | 94dB | ±0.5dB |
| Distortion | <2% Total Harmonic Distortion (THD) | |
| 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) |
Extech 407744 – Datasheet
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