SC-941 (SOUND CALIBRATOR, 94 DB)

Description  94 dB SOUND CALIBRATOR Model : SC-941 FEATURES Standard 94 dB 1000 Hz sound calibrator, useful to calibrate the " Sound Level meter " precisely. SPECIFICATIONS Frequency 1000 Hz ± 2 %. Sound Pressure Level 94 dB ± 0.75 dB. Suitable Microphone Type 0.5 inch or 1 inch microphone. Total harmonic distortion ± 2 %. Standard According IEC942, Class 2 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 Dia 50 mm ( round ) x 145 mm ( length ). 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)If the calibrated " SOUND LEVEL METER " used the 0.5" microphone, then on the " Couple Section " should install the " 0.5" Mic. Adapter " first. Consideration : If the calibrated " SOUND LEVEL METER " used the 1 inch microphone, then on the " Couple Section " should take away the " 0.5" Mic. Adapter ". 2)Insert the microphone of calibrated " SOUND LEVEL METER " carefully all the way into the coupler section of the Sound Calibrator. 3)Set the calibrated " SOUND LEVEL METER " to a range suitable for measuring " 94 dB ". 4)Set the " Off/BAT. TEST/On Switch " to " ON " position. A pure 1,000 Hz tone is produced. 5)Adjust the calibration VR (knob) of the " Sound Level Meter ". until that the display reach to 94.0 dB exactly.