Frequency : 1000/0.01% Hz Allows Calibration with A,B,C or D weighting networks or linear
Altitude Effects : Approximately 0.1dB decrease for each 2000 feet increase in altitude from sea level to 12,000 feet elevation,or comparable atmospheric pressure change
This 1kHz 94/114dB professional sound calibrator is for 0.5 in. or 1 in. microphones. Calibrates and verifies sound level meter operation. Level position switch to select 94dB or 114dB with power on LED indicator light. Durable die-cast aluminum housing generates a 1kHz sine...