8921 & 8922 AT A GLANCE
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) : 80 x 256 x 38mm