simpson 890-2 Calibrator,
Sound pressure level calibrators are used beforeor after taking measurements with sound level meters and noisedosimeters. The 890-2 can adjust Simpson models 886-2 and 884-2 orother sound level meters with a 1" diameter Microphone. The 890-2provides a constant 94 dB or 114 dB sound pressure level at 1 KHz(0 dB = 0.0002 Mbar). Calibrator is immune to a wide range oftemperature and humidity conditions while maintaining tight outputlevel tolerances.
MODEL 890-2 CALIBRATOR ACOUSTIC OUTPUT Frequency: 1000Hz 61% Sound Pressure Level: 94dB, 114dB ACCURACY Frequency: 61% Sound Level: 60.5dB at reference condition Distortion: <2% Reference: 0dB = 0.0002m bar POWER REQUIREMENTS Battery Type: (1) 9V NEDA 1604 Battery Life: 35 hrs approx. ENVIRONMENTAL Operating Temperature: 0° to 50°C Output Temperature Coefficient: <-0.05dB/°C Relative Humidity: 0-90% Relative Conditions: 23°C, 760mmHg, 30-50% relative humidity PHYSICAL Construction: aluminum housing Dimensions: 5.25" long x 2" diameter, (13 x 5cm) Weight: 14oz (400g) |
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 884-2&886-2 Datasheets |
