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EXTECH SOUND METER CALIBRATOR 407744 - $100 (Ingleside)
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This offering is for one ExTech sound level calibrator, model 407744. The theory of use; the sound level calibrator produces a 94dB sine wave at 1 Khz. When a microphone from a sound level meter is inserted into the calibrator unit, the sound level meter should display the signal in dB. If necessary, the meter should be adjusted to match the calibrators output signal. This calibrator has very limited use, works, and is in excellent condition. Thank you for looking good luck.
DETAILS
-Classification: Sound level calibrator
-Manufacturer: Extech Instruments Corporation
-Model: 407744 version 5.0
-Origin: Taiwan
-Year: approximately date 2005
-Specifications: output signal; 94dB, output signal accuracy +/- 0.5dB, output signal frequency 1 KHz sine wave,
accuracy of output signal frequency +/- 5%, compatible microphone sizes 0.5” & 1” microphones, total harmonic
distortion (THD) <2%@94dB, operating temperature 32°F -122°F, power supply two (2) 9V batteries (not included),
power consumption approximately 10mA DC, battery check status LED, dimensions 2.2” diameter x 5.7” length,
weight 0.75 lbs.
Material: die cast aluminum housing
Includes: sound level calibrator, calibration adjustment screwdriver, User manual, protective case, all in original box. Batteries NOT INCLUDED.
Note: Dimensions, types, color, description, photos and details are approximate, taken from user manual and some based on internet search.
CONDITION
This item is used, not new, in original box. Excellent condition and confirmed operation was tested. Very limited use. I am selling as is. See photos and narrative for all condition details. Contact me if you have questions.
OTHER
The provided information is approximate to the best of my ability, and I do not represent a manufacturer or collector of this type of item. Feel free to contact me if you have any questions or concerns. PLEASE serious bidders only.
LOCAL PICKUP CASH ONLY