BTMETER BT-822A Sound level meter Decibel Noise level meter 30~130dB Environmental Quality Tester Tool Sensitively adjustable

BTMETER BT-822A Sound level meter Decibel Noise level meter 30~130dB Environmental Quality Tester Tool Sensitively adjustable

🌟【Precision Measurement & Wide Range】With a high accuracy(+/-1.5dB,0.1 dB resolution) and a wide measurement range(30dBA-130dBA),the noise level meter is a useful device for you to measure the noise of running machines,music ,neighbor or speech therapy and so on.

🌟【More Intelligent Functions】Automatic power off function plays an important part in eliminating waste of electricity.Furthermore,low power indication is designed to remind you to replace battery in time.

🌟【Auto Power Off & Overload Indication】Max hold function is able to freeze the max recording and over-range measurement warning sign is designed for guiding you to select the correct range (30-80dB;50-100dB;60-110dB;80-130dB)according to real reading.And self-check function will keep 10 seconds for each opening opportunity.

🌟【Convenient for Further Analysis】There are output interfaces (AC/DC output) on the side of noise measurement device,which can be better connected with other devices,such as X-Y axis recorder or frequency analyzer for statistical analysis.

🌟【Meet Different Test Conditions】Frequency weighting C is suitable for measuring mechanical noise and A for the noise felt by human ear.Furthermore,there are two time weightings ,including “Fast”for real-time measurement and “Slow” for average noise volume.

Specifications：

Resolution:0.1dB

Linearity Range:  50 dB

Frequency Weighting:   A/C

Time Weighting:  Fast / Slow

Frequency Range:  31.5 Hz~ 8.5K Hz

Measurement Range:  30~130 Decibel

Accuracy:  ±1.5 dB (Under Reference Conditions)

Operating Temperature:  0℃ to 40℃

Operating Humidity:  10% to 80% RH

Microphone:  1/2 Inch Electric Condenser Microphone

Level Ranges： 30-80dB;50-100dB;60-110dB;80-130dB