Sper Scientific 850016 Acoustical Calibrator - 2 Point - Manual (Page 3)

OPERATING PROCEDURE
Note: For accurate calibration, background noise should
be less than 10 dB.
• Determine the sound meter's microphone size.
• Use the 1/2" Microphone Adapter (2) when
calibrating a 1/2" diameter microphone.
• When calibrating a sound meter with a 1"
microphone, pull off the 1/2" Microphone
Adapter (2) to use the 1" Microphone Insertion
Socket (1).
•
Fully insert the sound meter's microphone into the
insertion socket.
•
Use the 94dB/114dB/Off Slide Switch (4) to turn
the calibrator on and select either 94 dB or 114 dB.
•
Be sure the sound meter is set to an appropriate
scale to measure a matching sound of 94 dB or
114 db.
•
Adjust the sound meter according to it's calibration
instructions.
Unfold for Battery Replacement,
Specifications and Warranty information.