Dual Level Sound Meter Calibrator

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£435.00  (Excluding VAT @ 15%) Quantity:

Similar to the GA601 in design, the GA607 meets the demanding standards of a class 1 calibrator. It features two calibration levels, 94dB and 104dB re 20µPa both at 1kHz. It is for use with 1/2” microphones. Using the GA607, a sound level meter can be checked at two meter scale points and usually on two ranges.

IEC 60942 states that for a calibrator to be used in the Class 1 category, it must be corrected for barometric pressure. The Castle GA690 barometer is supplied with the GA607 Class 1/C calibrator for just this purpose. With a simple readout on the clear display and a correction table printed on the reverse, this is a simple process.

Technical Data:

Applicable Standards
IEC60942:2003 Sound Calibrators, Class 1/C.

Output
94dB or 104dB relative to 20µPa

Nominal Sound Pressure level at 101.3kPa (760mm Hg) 23º & 50%RH
Tolerance: ± 0.3dB
Harmonic Distortion: < 3%

Temperature range:
-10°C to 50ºC

Batteries
2 x 3V CR2032 (Coin Cell)
Life: approx. 70 hours

Dimensions
Cavity diameter: ½" microphone standard
Length: 140mm,
Diameter: 51mm,
Weight: 230gms

GA690 Specifications

• Measuring Range: 0 to 1300mbar (0 to 975mmHg)
• Resolution: 1mbar, 1mmHg
• Accuracy: ±0.25% FS hysteresis and linearity
• Battery: 9V Alkaline type 6LR61 (PP3)
• Battery life: Greater than 2500 hours
• Dimensions: 106 x 67 x 30mm (LxWxH)
• Weight: 135g incl. battery

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