Overview
DUBAN DB30-6228N precision ordinary sound level meter is a multi-functional sound level measuring instrument, which can not only be used as a general sound level meter measurement index time weight sound level, but also meets the performance requirements of GB/T 3785 and IEC 61672-2002 standards for level 1 sound level meters, and also complies with JJG 188-2017 standards. The equipment is suitable for noise measurement and environment noise census measurement in various industrial environments, especially for sound level measurement of various types of noise such as environment, machinery, traffic, ships, etc. It is also suitable for industrial environmental protection, construction, teaching and research and other fields.
Features
1. Provide the choice of fast (F), slow (S) and pulse (I) three time weighting gears.
2. Digital detection technology is used instead of traditional sound level meters, which significantly improves the Stability and Reliability of the instrument.
3. Equipped with a large screen display, the information is presented clearly and intuitively, and at the same time supports dynamic scale display.
4. Frequency range: 10Hz-20kHz.
5. Microphone: φ 12.7mm (1/2 ") test capacitor microphone.
6. Frequency weighting: A weighting, C weighting, Lin (linear).
7. Range control: automatic range/manual, divided into three gears, linear range > 60dB.
8. Measurement range: 30dB~ 90dB; 50dB~ 110dB; 70dB~ 130dB.
9 instrument accuracy: 1 level.
10. Monitor: large-screen dynamic LCD display, instantaneous sound level, with analog meter display.
11. Output interface: AC output, USB interface.
12. Power supply voltage: 5 AA batteries, external power supply: 5V.
13. Dimensions: 270 * 90 * 32mm.
14. Conditions of use: -10~ 50 ° C.
Principle
The precision sound level meter uses digital detection technology instead of traditional sound level meters, captures sound signals by testing capacitive microphones, and applies frequency weighting (A weighting, C weighting, linear) and time weighting (fast, slow, pulse) for sound level measurement, realizing automatic or manual range control to ensure measurement Stability and Reliability.
Applications
Industrial environment noise measurement, environment noise census measurement, environment noise measurement, mechanical noise measurement, traffic noise measurement, ship noise measurement, industrial environmental protection, construction, teaching and research
Standards
GB/T 3785、IEC 61672-2002、JJG 188-2017
Steps
1. Select the time weighting gear (fast F, slow S, or pulse I).
2. Set the frequency weighting (A-weighted, C-weighted, or linear).
3. Select the range control mode (automatic or manual).
4. Read the instantaneous sound level and analog meter display through the large-screen display.
5. Use an output interface (e.g. USB) for data transfer.
Notice
• Make sure the power supply is sufficient before use, you can use 5 AA batteries or an external 5V power supply.
• Operating environment temperature should be in the range of -10~ 50 ℃.
• Pay attention to the selection of measuring range and avoid exceeding the Measurement range (30dB~ 130dB).
• Regularly check the microphone and interface to ensure measurement accuracy.
