Sound Level Meter - Measure & PC Interface
Ambient Sound Levels in dBA dBC 30-130dB
CENTER 321 is our newly designed sound level meter. With all the functions 320 can provide, we had changed something in new designed back light LCD. We had added fast analog bar with peak hold two second in this tester. An auto range function is added for the tester to choose one proper range for measuring by the tester itself. RS232 interface is also added to provide real time data to the computer.
- PC Interface
- Bar graph indication
- Max/min function
- Auto-ranging 30 to 130dB
- Resolution 0.1dB
- Level range display
- AC/DC signal output
- Auto power off
- IEC 651 TYPE II
Microphone:
Electorate condenser microphone
Accuracy:
±1.5 dB ( ref 94dB @1KHz )
Level Range:
Lo = 30 ~ 80 dB
Med = 50 ~ 100 dB
Hi = 80 ~ 130 dB
Frequency Weighting: A , C
Time Weighting: Fast , Slow
Auxiliary Outputs:
AC output
Output voltage: 1Vrms (at full scale)
Output impedance: Approx:600Ω
AC output
Output voltage: 10mV / dB
Output impedance: Approx:50Ω
Dynamic Range:
50 dB
Frequency Range:
31.5Hz to 8KHz
Battery Type:
9V Battery
Battery Life:
50 hours ( with alkaline battery )
Operation Temp.:
0°C~ 40°C(<80% R.H.)
Accessories:
Battery, Operation Manual, Carrying Case, Calibration Screwdriver, Windscreen, 3.5Φ plug
