This instrument has two measurement methods:
1. Measurement method 1: Automatic measurement of Lp, Leq, LAE, Lmax, Lmin, E, DL. Measurement time can be set
For 10s, 1min, 5min, 10min, 20min, 30min, 1h, 8h, 24h, Man (manual).
The measurement results can be displayed or printed, and 500 sets of measurement data can be stored.
2. Measurement method 2: Continuous automatic measurement of equivalent continuous sound level Leq, with a measurement time interval of 1 second to 10 seconds,
The start time, end time, and measurement interval can be set through panel buttons or through a computer.
The measurement results can be displayed, printed, or transmitted for computer processing, and the measurement data can store 50000 equivalent continuous sound levels.
3. The use of digital detection technology to replace some traditional sound level meters greatly improves stability and reliability.
4. Explosion proof mark:Ex ib ⅡB T4 Gb
Main technical performance
1. Microphone: Φ 6.35mm (1/4 ") Electret Test Capacitor Microphone, with a sensitivity of approximately 2mV/Pa,Frequency range 20Hz~12.5kHz
Measurement range of sound pressure level: 50dB~145dB (A) 55dB~145dB (C) 55dB~145dB (Z)
(Equipped with a 2mv/pa sensitivity microphone)
Peak C measurement range: 53dB~148dB
3 sound exposure measurement range: 0.01~999.99Pa2h
4 Noise dose measurement range: 0%~99999%
5 frequency range: 20kHz~10kHz
6 Frequency weighting: A weighting, C weighting, Z weighting
7 time weighting: Fast (F), Slow (S), Peak (C)
8 Detector Characteristics: Digital True RMS Detection, Peak Factor 3
9 Measurement time setting:Measurement method 1:10s、1min、 5min、 10min、 15min、 20min、30min 、1h、8h、24h。
Man (artificial). Clock: automatically running for year, month, day, hour, minute, and second.
Automatic measurement functions: Lp, Leq, LAE, Lmax, Lmim, E, DL.
Measurement method 2The measurement time interval is 1s~10s, and Leq is automatically measured.
10. Automatic storage of measurement data: Measurement method 1: single group: 500 sets of data, measurement method 2: 50000 Leq values.
Store and output the results to the computer for processing, display, and printing.
12 Display: 122X32 dot matrix LCD display, with functions such as measurement mode, measurement time and clock, backlight display, etc.
13 output interface: AC output: 0V~1.5V RS-232C interface output
14 Power supply: 3.7V/1000mA rechargeable lithium battery (already encapsulated in the lower casing of the instrument, with current limiting protection).
15 Dimensions: l × b × h (mm) 120 × 67 × 24
16 Quality: 300g (with battery) Operating temperature: -10 ℃~50 ℃, relative humidity 20%~90%