SI340 is an instrument for measuring environmental noise, which can be used in the fields of machine manufacturing, equipment maintenance, architectural design, transportation, environmental protection and health care.
A weight attenuates the low frequency components of the original noise signal of the environment more, simulates the auditory characteristics of the human ear, evaluates the noise size from the hearing, so it is the most widely used, and the weight has less modification to the original noise signal of the environment. Can truly reflect the noise of the environment.
SI340 adds the recording function, which can record all the data in the measurement process.
Recording function |
Yes |
PC software |
Yes |
Storage capacity |
17280 sets of measurements |
Record interval |
1 second to 10 minutes |
Measuring range |
30~130dBA; 35~130dBC |
Resolution |
0.1dB |
Precision |
±1.5dB (reference tone standard, 94dB@1kHz) |
Measuring gear |
30~130dB; 30~80dB; 50~100dB; 80~130dB |
Response frequency |
31.5Hz~8.5kHz |
Sampling frequency |
2 per second |
Frequency weighted characteristics |
A and C rights |
Time weighting characteristics |
FAST (time constant 125 milliseconds) SLOW (time constant 1 second) |
Analogical depiction |
2dB/Characterization (30~130dB gear) 1dB/Characterization (other gear) |
AC signal output |
4Vrms/output impedance is about 100Ω per full scale |
DC signal output |
The output impedance of 10mV/dB, is approximately 85Ω |
Operating environment |
Temperature: 0~40℃ Humidity: 10~80%RH |
Storage environment |
Temperature: -10~60℃ Humidity: 10~70%RH |
Power supply |
2 pcs of 1.5V AA alkaline batteries 2 pcs of 1.2V AA rechargeable batteries 5V USB |
Protection level |
IP40 |
Dimension |
221*65*30 mm |
Material |
ABS |
Weight |
About 155g (without batteries) |