Brief introduction: Purpose: the equipment can be widely used in environmental protection, labor hygiene, industrial enterprises, scientific research and teaching, and other fields, to complete the measurement of environmental noise, the sound power level measurement, machine and equipment as well as the architectural acoustics measurement noise. Optional octave analysis software package can be real-time spectrum analysis of noise. Technical parameters: 1 microphone: 12.7 mm (1/2 ") pre-polarization Φ test capacitor microphone 2 frequency range: 10 Hz to 20 kHz plus or minus 1 dB (excluding microphone) 3 measurement limit: 130 db, can be extended to 140 db Dynamic range: greater than 110 db (A) 5 time right: parallel (simultaneously) F, S, I, as well as the Peak 6 right of frequency meter: parallel (also) A, C, Z 7 filter (optional) : parallel digital filter, octave 8 A/D: 24. 9 sampling frequency: 48 KHZ Instrument types: level 1 or level 2. Display: 128 * 128 dot matrix LCD, contrast adjustable level 16, with LED backlight. 12 basic measurement functions: list or graphic measuring LPA, LPC, at the same time LPZ sound pressure level of three kinds of frequency meter right, equivalent continuous sound level Leq. 13 statistical integration time: manual, 1 s to the 99 - hour arbitrary set or step Settings. 14 data storage: 128 sets with distribution of spectrum analysis of the statistical analysis results or results. 15 output interface: 1) the ac output: the output power: 150 mw, can pick up 8 Ω monitor headphones. 2) dc output: the output scale: 20 mv/dB. 3) the RS232 interface: connect to AH40 miniature printer measurement results and related chart. 4) USB interface: USB line will turn USB SD card. 16 calendar clock: error is less than 1 minute/month, GPS timing, when the school. LR6 17 power: section 4 (5) battery or an external 5 v power supply, the working current of about 100 ma. Working temperature: 18-10 ℃ to 50 ℃ 19 the dimensions (mm) : 260 * 80 * 30 Quality (20 kg) : 0.3
Brief introduction: Purpose: the equipment can be widely used in environmental protection, labor hygiene, industrial enterprises, scientific research and teaching, and other fields, to complete the measurement of environmental noise, the sound power level measurement, machine and equipment as well as the architectural acoustics measurement noise. Optional octave analysis software package can be real-time spectrum analysis of noise.
