SC-942 (SOUND CALIBRATOR, 94 DB/ 114 DB)

Description  94 dB & 114 dB SOUND CALIBRATOR Model : SC-942 FEATURES Standard 94 dB and 114 dB/1000 Hz sound calibrator, useful to calibrate the " Sound Level meter " precisely. SPECIFICATIONS Frequency 1000 Hz ± 2 %. Sound Pressure Level 94 dB range 94 dB ± 0.75 dB. 114 dB range 114 dB ± 0.9 dB. Suitable Microphone Type 0.5 inch or 1 inch microphone. Total harmonic distortion 94 dB range ± 2 %. 114 dB range ± 5 %. Operating Temp. 0 to 50 ℃ (32 to 122 ℉). Power Supply Heavy duty or Alkaline type, DC 9V battery. 006P, MN1604 ( PP3 ) or equivalent, 2 PCs. Power Consumption Approx. DC 7 mA. Battery Check Build in " Battery test indicator " Dimension Round 50 mm dia. x 82 mm. Weight ( including batteries ) Approx. 350 g/0.77 LB. Accessories Included Instruction manual…………………………………….. 1 PC. 0.5" mic. adapter………………………………………. 1 PC. Adjust Screw Driver……………………………………. 1 PC. Carrying case, CA-03………………………………….. 1 PC. CALIBRATION PROCEDURES 1. Insert the microphone of " SOUND LEVEL METER " carefully all the way into the coupler section of the SC-942. 2. Set the " Sound Level Meter " to a range suitable for measuring " 94 dB " or " 114 dB ". 3. Set the " OFF/94 dB/114 dB " to " 94 dB " or " 114 dB " position. A pure 1,000 Hz tone is produced. 4. Adjust the calibration VR (knob) of the " Sound Level Meter ". until that the display reach to 94.0 dB or 114.0 dB exactly.