2 POINT ACOUSTICAL CALIBRATOR 850016 INSTRUCTION MANUAL SPER SCIENTIFIC
INTRODUCTION Calibration is suggested by OSHA to ensure good sampling practices. The 850016 Sper Scientific 2-Point Acoustical Calibrator is designed to calibrate Sper Scientific digital sound meters, or any other sound meter that is usercalibrated and has a ½" or 1" microphone. Features 2-point calibration at 94 dB and 114 dB, and a low battery indicator. Comes with instructions, 9V battery and a carrying case.
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.
BATTERY INSTALLATION AND REPLACEMENT • Replace the battery if the Power Indicator (3) does NOT light when 94dB/114dB/Off Slide Switch (4) is in the 94 dB or 114 dB position and/or when there is no audible tone. • Unscrew the Battery Compartment Ring (5). • There are wires connected to the Battery Compartment (6), so SLOWLY lift the center to access the battery. • Insert a fresh 9V Alkaline battery. • Replace the Battery Compartment (6) and tighten the Battery Compartment Ring (5).
SPECIFICATIONS • Standard: ANSI S1.40-1984 and IEC942 1988 Class 2 • Output Sound Level: 94 dB and 114 dB re 20 uPA under reference • Output Frequency: 1kHz ±4% • Accuracy: ± 0.
WARRANTY Sper Scientific warrants this product against defects in materials and workmanship for a period of 5 years from the date of purchase, and agrees to repair or replace any defective unit without charge. If your model has since been discontinued, an equivalent Sper Scientific product will be substituted if available. This warranty does not cover damage resulting from accident, misuse, or abuse of the product.
