sound level meter

详情

***1 & ***2 AT A GLANCE DIGITAL DISPLAY WITH ANALOG GRAPH! BACKGROUND NOISE ABSORBER ! MAX / MIN RECORD, MAX HOLD ! RS**2 INTERFACE ! MEETS IEC **1, TYPE 2 CLASS ! FEATURE Meets IEC **1;ANSI S1.4, type2 standard. Quasi-Analog bar indicator:1dB display steps, *0dB display range, updated every *0ms. Measurement level range features 6 ranges. Background noise absorber mode filters ambient sounds. Fast( **5 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 ***2). Low battery indicator. Optional RS**2 software (Disk & PC cable). Serial formt: ***0Baud 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 : *****0dB. Big LCD : *2x*4mm. Measurement level range : 6 ranges in **-dB steps:****0dB, ****0dB, *****0dB, *****0dB, *****0dB, *****0dB. Accuracy : ±1.5dB ( under reference condition ) Digital display : **1/2 dight LCD, 0.1dB resolution updated 0.5seconds. Analog output : AC:0.**7vrms( at full scale ) DC:*0mV/ dB Measurement frequency range : *1.5Hz*8KHz. Measurement level A weighting : *0dB~**0dB. Measurement level C weighting : *5dB~**0dB. Operation temperature : 0~*0&#***1;,*0~*0%RH Storage temperature : **0~*0&#***1; Meter includes hard ABS case, battery, manual. Battery life : *0 hours typical (9V) Dimensions (meter WxHxT) :