Model 394A40 Product Type: Calibrator, Calibrator, Acoustic Pistonphone, 114 dB at 250 Hz, battery operated (for calibration of 1/4"" or 1/2"" microphones) View Spec Sheet (PDF) View photo and drawing .
PERFORMANCE ENGLISH SI Operating Frequency(± 0.5 %) 250 Hz 250 Hz Output(± 0.08 dB)(Sound Pressure Level) 114 dB re 20 µPa 114 dB re 20 µPa [3] Distortion <1.5 % <1.5 % ENVIRONMENTAL Temperature Range(Operating) 14 to +131 °F -10 to +55 °C Barometric Pressure Coefficient 0.09 dB/kPa 0.09 dB/kPa ELECTRICAL Settling Time 15 sec 15 sec [1] Internal Battery(Type) AA AA [2] Internal Battery(Quantity) 4 4 Battery Life 20 hours 20 hours [1][2] PHYSICAL Size (Height x Width x Length) 1.38 in x 1.38 in x 6.89 in 35 mm x 35 mm x 175 mm Weight 11.3 oz 320 gm SUPPLIED ACCESSORIES: Model 079A22 Adaptor for 1/4 inch microphones. (1) Model RA0069 Adaptor for 1/8 inch microphone. (1) Model ZC0002K Barometer (1) OPTIONAL ACCESSORIES: Model RA0023 1 inch microphone coupler. (1) Model RA0025 Octopus coupler (1/4 inch mics) (1) All specifications are at room temperature unless otherwise specified. NOTES: [1] Typical. [2] Alkaline type recommended for longest service life. [3] At ambient pressure
Download Drawing 21338-NR.pdf
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