Digital Desibel måler

Digital desibel måler. Måler støy og musikk.

This Digital Sound Level Meter is an instrument to measure Sound Pressure Level in decibels (dB). This meter is featured with wide measuring range (40 ~ 130 dB), Bar-Graph Indication, A/C frequency weighting, Fast / Slow response and Maximum Hold function. The meter also provides a windscreen to filter-out unwanted signals. Moreover, the meter can connect to PC for Data Logging with optional USB cable.
This is a portable, easy to use and handy instrument for sound quality control in office, home, school and construction site. The meter has wide range of applications such as noise pollution studies, research and other industrial use.
Features:

" Weight:210g
" Size (Approx):23.5 x 7.0 x 3.0cm
" Wide measuring range 40~130dB (decibels)
" Two equivalent weighted sound pressure levels, A and C
" Fast and Slow dynamic characteristics modes
" Max locked function has the maximum value, after the stent-in-one unique, easy to use
" AC Analog Signed Output for frequency analyzer level recorder or X-Y axis, FFT analyzer, graphic recorder, etc. to do statistical analysis of data logger
" Auto power off function
" Low battery indicator
" Overload prompts
" Portable, easy to use and handy
" Instantaneous sound measure function
" Tripod Mounting option
" Passed the high standards of IEC651 TYPE 2 & ANSI S1.4 TYPE 2 for sound level meters
Specification:
" Sound Level: 40 ~ 130 dB With Level Selecting Button Switches
" level 1: 40 ~ 70dB
" level 2: 60 ~ 90dB
" level 3: 80 ~ 110dB
" level 4: 100 ~ 130dB
" level 5: 40 ~ 130dB
" Accuracy: –2dB (under reference condition)
" Measuring Level: 40~130dBA, 40~130dBC
" Frequency Range: 31.5 Hz ~ 8.5 kHz
" Linearity/Dynamic Range: 30dB
" Frequency weighting: A and C features
" Digital LCD: 45 x 35mm with 4 digits, Resolution: 0.1dB, Display: 0.5 secretary
" Sampling Rate: 2 times/second
" Dynamic Characteristic (Time weighting): FAST (high speed) / SLOW (low speed)
" 1 bar graph represents 1dB in the Analog Bar Graph
" Bar Graph: 50dB scale at 1dB step for monitoring current sound pressure level display period of 50mS
" Level Ranges: 40 ~ 70dB, 60 ~ 90dB, 80 ~ 110dB, 100 ~ 130dB, 40 ~ 130dB
" Load indication: Use the symbol OVER (indicating over range) and UNDER (indicating less than lower limit of the range)
" AC output: 0.707 Vrms at FS output impendance aprrox. 600?
" Microphone: 1/2 inch electret condenser microphone
" Maximum Hold
" Working Environment: Temperature: 0~40•C (32~104•F), Humidity: 10~70% RH
" Storage Environment :Temperature: -10~50•C (14~122•F) , Humidity: 10~80% RH
" Power Supply: 6F22 9V alkaline cells/battery or DC 9V 100mA (not included)