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Table of Contents
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Summary of Contents for Sper scientific 840029
- Page 1 DIGITAL SOUND LEVEL METER 840029 Instruction Manual...
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Page 2: Table Of Contents
CONTENTS Introduction ................3 Panel Description ..............3 III. Operating Instructions A. Measuring Procedure ............4 B. Settings for General Applications ........4 C. Signal Output ..............4 D. Calibration ................. 4-5 E. Precautions ............... 5 F. Battery Replacement ............5 IV. -
Page 3: Introduction
It covers the 30 ~ 130 dB in the "A" scale, and 35 ~ 130 dB in the "C" scale, with an accuracy of ±1.5 dB. This meter can be acoustically calibrated in compliance with OSHA, using Sper Scientific's Acoustical Calibrator 840031 (or equivalent). -
Page 4: Operating Instructions
III. OPERATING INSTRUCTIONS A. MEASURING PROCEDURE Slide the POWER selector to the ON (AC) or ON (DC) position. Slide the WEIGHTING selector to the "A" or "C" position. The "A" frequency weighting simulates human ear response. During an environmental sound level measurement, select the "A"... -
Page 5: Precautions
Use the calibration screw driver to gently turn the CALIBRATION ADJUSTMENT until the display reads 94.0 dB. External Calibration: Use Sper Scientific's Acoustical Calibrator 840031 (or equivalent) to calibrate the unit, including the microphone, in compliance with OSHA. Slide POWER selector to an ON position. -
Page 6: Specifications
IV. SPECIFICATIONS Display digits, 3/4" LCD Functions dB ( A and C Frequency Weighting), Response (Fast, Slow), Max. Hold AC/DC Output Measurement Range 30-70 dB, 60-100 dB, and 90-130 dB 40 dB on each step, with overload indicator Resolution 0.1 dB Accuracy ±... -
Page 7: Frequency Weighting (A And C) Characteristics
FREQUENCY WEIGHTING (A and C) CHARACTERISTICS Frequency dB A dB C Tolerance dB 31.5 -39.4 -3.0 ± 5.0 -34.6 -2.0 ± 4.5 -30.2 -1.3 ± 4.0 -26.2 -0.8 ± 3.5 -22.5 -0.5 ± 3.0 -19.1 -0.3 ± 2.5 -16.1 -0.2 ±... -
Page 8: Warranty
FIVE YEAR WARRANTY Sper Scientific warrants this product against defects in materials and workmanship for a period of five 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.
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