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Sound Level Meter with Datalogging SI340

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.

Key Features

  • Frequency A/C
  • SLOW/FAST of time weight
  • DC/AC signal output
  • PC software 
  • Data records 
  • USB data export 
Not Available

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)