5.000Hz
50.00Hz
500.0Hz
5.000kHz
±
(1.2% ± 3 digits)
Frequency
(Auto-ranging)
Range
Accuracy
Function
Resolution
0.001Hz
0.01Hz
0.1Hz
1Hz
Sensitivity: >0.5V RMS while ≤1MHz,
Sensitivity: >3V RMS while >1MHz
Input Protection: 250V DC or 250V AC RMS
±
(1.5% ± 4 digits)
50.00kHz
500.0kHz
10Hz
100Hz
10.00MHz
1kHz
Range
Test current 1.4mA DC and open circuit voltage 2.8V DC
Built in Buzzer will be sound if the circuit resistance is less
than 50
Ω
Function
Diode Test
Overload Protection: max 600V DC or 600V AC RMS
Continuity
6. Operating Instructions
6.1. Measuring Sound Level
•
Set the function switch to the “dB” position.
•
Move the meter to face the microphone to a sound source in a
horizontal position.
•
The C-weighting curve is nearly uniform over the frequency range
from 30 to 10,000Hz, thus giving an indication of overall Sound
level.
•
The Fast response is suitable to measure shout bursts and peak
values from sound source.
•
The sound level will be displayed.
Note:
Strong wind (over 10m/sec.) striking the microphone can cause
misreading for measurement in windy locations, a windscreen
should be used in front of microphone.
6.2. Measuring Humidity
•
Humidity Measurement for indoor.
•
Set the function switch to the ON position.
•
Move the meter and place in the room.
•
Read the %RH on the display after about two hours.
9