Precision noise analyzer NL-27 Standard configuration Halloween decorations ,jack-o'-lantern ,Trendy resin ornaments,Warning tape, isolation tape, gauze Huayao Master (Puyang) Automation Equipment Co., Ltd. , https://www.huayaolive.com
Technical index of precision noise analyzer NL-27:
· Applicable standards: IEC 651: 1979 Type 1, IEC 804: 1985 Type 1, JIS C 1505-1988, JIS C1513-1983 Type 3
ANSI SI .11 Type 1D, IEC 1260-1995
· Two-way measurement and real-time frequency analysis: For the main channel and sub-channel, frequency weighting and time weighting can be set separately, and the real-time frequency analysis of 1/1, 1/3 octave can be on the main channel.
Measurement function: instantaneous sound level Lp, equivalent continuous sound level Leq, sound exposure level LE, maximum sound level Lmax, minimum sound level Lmin, sound level percentage (optional five L1, L5, L10, L50, L90, L95 , 99) Maximum sound level Ltm3, Ltm5, waveform peak hold Lpeak within 3 seconds to 5 seconds
· Measurement time: 1 ～ 99 (hours, minutes, seconds)
· Maximum measurement range: 140dB (rms)
· Background noise: typical 17dB (A) rms
· Frequency range: 20 ～ 12500Hz (including microphone), 10 ～ 20000Hz (electrical characteristics)
· Frequency weighting: A, C,
· Time response: main channel: fast, slow, 35ms, 10ms; sub-channel: fast, slow, 35ms, 10ms, pulse, peak hold · Display: backlit LCD (192 × 192)
· Sound level meter display: digital display resolution is 0.1dB, display period is 1 second, bar graph display resolution is 0.5dB, display range is 60dB, display period is 0.1 second. Analyzer display: digital display resolution is 0.1dB, display period The 1 second bar graph display resolution is 0.5dB, the display range is 70dB, and the display period is 0.1 seconds. Clock: year, month, day, hour, minute, and second. Range: sound level meter mode (display range: 60dB)
7 steps with 10dB steps: 20 ～ 80, 30 ～ 90, 40 ～ 100, 50 ～ 110, 60 ～ 120, 70 ～ 130,80
Analyzer mode (display range: 70dB)
7 steps with 10dB steps: 10 ～ 80, 20 ～ 90, 30 ～ 100, 40 ～ 110, 50 ～ 120, 60 ～ 130, 70 ～ 140dB
· Memory: Manual: 200
Automatic: 10000 (sound level meter mode), 4000 (1/1 octave analysis), 2000 (1/3 octave analysis)
· Trigger function: trigger source: input signal, external signal, delay trigger · Infrared communication: communication with computer · Signal output: AC, DC, trigger signal, serial port RS232C, infrared communication · Power supply: 4 batteries, continuous operation can reach 8 hours · Environmental conditions: -10 ～ 50 ℃, 30 ～ 90% RH
· Size: 30 (H) × 10 (W) × 5 (D) cm
· Weight: 800g 
1. One draft shield 2. One carrying case 3. One tripod 4. Four batteries 5. One remote control 6. One screwdriver for adjustment 7. One instruction