2
Display: 0.5secretary
7) Bar graph:50dB scale at 1dB step for monitoring current sound pressure level display
period:50mS
8) level ranges: 30-80dB; 50-100dB;
60-110dB; 80-130dB
9) Over indicate over range:
Under indicate less than lower limit of the range.
10) Ac output: 0.707Vrms at FS output impedance
approx 600
Ω
11) DC output: 10mV/dB output impedance approx 100
Ω
12) weighting time : fast/slow
13) Microphone :1/2 inch electret condenser microphone
14) Max: Maximum hold
15) Power supply: 1*9V alkaline cells or DC 9V adapter
Power life: about 30hrs(alkaline cells)
16) self calibration time: 10 sec(every turn on)
17) Operating Temperature: 0
℃
~40
℃
Operating Humidity: 10%~80%RH
18) Storage Temperature:-10
℃
~60
℃
Storage Humidity :10%~70%RH
19) Dimensions: 265(L)*72(W)*35(H)mm
20) Weight: 300g(including batteries)
D. Calibration Procedures:
Please use a Standard Acoustic Calibrator.
1) Make the following settings:
Display: SPL(dBA) time
weighting: FAST
Level range: 60~110dB
Measurement mode: MAX function disable
2) Insert the microphone carefully into the 1/2 inch hole of the Calibrator.
3) Turn on the Calibrator and adjust the Protentiometer in side the Battery compartment of the
unit (shown in the diagram 1). The level display will indicate the desired Level (94.0).
Our products are all well calibrated before Shipment. Recommended recalibration cycle: 1 year
