Sound Level Meter

AZ-8921 & 8922
DIGITAL DISPLAY WITH ANALOG GRAPH! BACKGROUND NOISE ABSORBER ! MAX / MIN RECORD, MAX HOLD ! RS232 INTERFACE ! MEETS IEC 651, TYPE 2 CLASS !

FEATURE Meets IEC 651;ANSI S1.4, type2 standard. Quasi-Analog bar indicator:1dB display steps, 50dB display range, updated every 50ms. Measurement level range features 6 ranges. Background noise absorber mode filters ambient sounds. Fast( 125 msec.) or Slow( 1 sec.) respone 3 times. Record Max / Min. & Maximum Hold function. A / C Weighting selectionable. Microphone : 6mm(Dia.)electric condenser type. Backlight for use in dark areas (Model 8922). Low battery indicator. Optional RS232 software (Disk & PC cable). Serial formt: 2400Baud rate, 1 Stop bit, 8 Data bits. N: xxx, xdB Monitor the sound levels from traffic noise, alarm systems and workplace machinery, Multi-Freguency calibration to ensure quality stable.

SPECIFICATION
Auto range : 30-130dB. Big LCD : 42x64mm. Measurement level range :   6 ranges in 10-dB steps:30-80dB, 40-90dB, 50-100dB, 60-110dB, 70-120dB, 80-130dB. Accuracy : ±1.5dB ( under reference condition ) Digital display : 3-1/2 dight LCD, 0.1dB resolution updated 0.5seconds. Analog output : AC:0.707vrms( at full scale ) DC:10mV/ dB Measurement frequency range : 31.5Hz-8KHz.	Measurement level A weighting : 30dB~130dB. Measurement level C weighting : 35dB~130dB. Operation temperature : 0~50℃,10~90%RH Storage temperature : -20~60℃ Meter includes hard ABS case, battery, manual. Battery life : 20 hours typical (9V) Dimensions (meter WxHxT) :