Data Logger Sound Level Meter (SM-841)


Data Logger Sound Level Meter (SM-841)


Technical Specification;
Applied standard IEC61672-1 CLASS2
Accuracy ±1.4dB
Frequency range 31.5Hz~8kHz
Dynamic range 50dB
Measuring level range Lo:30dB~80dB
Hi: 80dB~130dB
Frequency weighting A & C
Time weighting FAST 125ms;SLOW ( 1s )
Microphone 1/2 inch electrets condenser microphone
Max Hold MAX
Min Hold MIN
HOLD: Hold the readings
Alarm function “OVER” is when input is more than upper limit of range.
“UNDER” is when input is less than lower limit of range.
Analog output AC/DC outputs from earphone outlet 

AC=1Vrms ,DC=10mV/dB

Data recording PC real-time monitoring and recording
Auto power off Meter automatically shuts down after approx. 15 minutes inactivity.
Power supply One 9V battery, 006P or IEC 6F22 or NEDA 1604.
Battery life at least 30 hours
Operating conditions -20℃~60℃; 10%RH~90%RH
Storage conditions -20℃~60℃; 10%RH~75%RH


252*66 *33 mm
Weight: 262g


























◆Comply with IEC61672-1 CLASS2 standard

◆Analog AC/DC outputs for connection to frequency analyzer or X-Y shaft recorder
◆PC real-time monitoring and recording
◆4digits LCD display with a resolution of 0.1dB
◆2 times/second


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