DT-8851 Sound Level Meter

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Product Description

Features:
1. This unit confirms to the IEC61672-1 CLASS2 for Sound Level Meters.
2. MAX & MIN measurements
3. Over range display
4. Under range display
5. A & C Weighting
6. FAST & SLOW response
7. Analog AC/DC outputs for connection to frequency analyzer or X-Y shaft recorder
OPERATING PROCEDURE
1. Power on the meter.
2. Press ‘LEVEL?button to select desired level, base on ‘UNDER?or ‘OVER?do not appear on LCD.
3. Select ‘dBA?for general noise sound level and ‘dBC?for measuring sound level of acoustic material.
4. Select ‘FAST?for instant sound and ‘SLOW?for average sound level.
5. Select ‘MAX/MIN?button for measuring maximum and minimum noise level.
6. Hold the instrument comfortable in hand or fix on tripod and measure sound level at a distance of 1~1.5 meter.
specifications:

Standard applied: IEC61672 -1 CLASS2
Accuracy: +1.4dB
Frequency range: 31.5HZ ~ 8KHZ
Dynamic range: 50dB
Level ranges:

LO：30dB~80dB
Med：50dB~100dB
Hi：80dB~130dB
Auto：30dB~130dB
Frequency weighting: A/C
Time weighting: FAST ( 125ms ), SLOW ( 1s )
Microphone: 1/2 inch electret condenser microphone
Display: 4 digits LCD display with a resolution of 0.1dB
Display Update: 2 times/sec.
MAX hold: Hold the Maximum reading
MIN hold: Hold the Minimum reading
HOLD: Hold the readings
Alarm function: “OVER”is when input is more than upper limit of range.
“UNDER”is when input is less than upper limit of range.
Analog output : AC/DC outputs from earphone outlet
AC=1Vrms ，DC=10mV/dB
Data output : USB data traffic
Auto power off: Meter automatically shuts down after approx. 15 minutes of inactivity.
Power supply: One 9V battery, 006P or NEDA1604 or IEC 6F22.
Power life : About 30hours
Operation temperature and humidity:
0℃~40℃,10％RH~90％RH
Storage temperature and temperature:
-10℃~60℃，10％RH~75％RH
Dimension: 278 (L) * 76 (W) * 50(H) mm
Weight: 350g