94dB Sound Calibrator Extech 407744

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SKU:
407744
UPC:
793950407448
  • 407744, Extech
£281.21 (Inc. Tax)
£234.34 (Ex. Tax)

Out of stock

Description

  

Extech 407744 Sound Level Calibrators helps calibrates and verify Sound Level Meter operation for use on Sound Level Meters with 0.5" or 1.0" microphones. Its design meets IEC standard 60942 1997-11. It has a total harmonic distortion (THD) of greater than 2% at 94dB. It also features 1kHz sine wave at 94dB is generated to an accuracy of 5% (frequency) and ±0.8dB. Completed and shipped with two 9V batteries, carrying case, and screwdriver.


Features

■  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
■  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

 

Specifications

Specifications

Range

Accuracy

Frequency

1000 Hz

±5%

Sound Pressure Level

94 dB (407744); 94dB/114dB (407766) ±0.5dB (94dB)

±1dB (114dB)

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)

 

 

Accessories

Order Code

Description

407744-NIST

Sound Level Calibrator, 94dB with NIST Cert.

407766

Sound Level Calibrator, 94dB/114dB

407766-NIST

Sound Level Calibrator, 94dB/114dB with NIST Cert.

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