NL291 Real-time Signal Analyzer
Features
A pocket real-time noise signal analyzer
Real-time octave and/or 1/3 octave band analyses
FFT analysis on noise or vibration
Lower background noise, 90dB linearity range.
Complies with IEC 61672 class 1 and IEC 61260 class 1
May be select different software based on your specific needs
Uses
Comprehensive sound measurements
Environment noise certification and 24h monitoring
Noise profile measurement of industrial noise
Gathering field-data for further analyses
Quality-testing products
Research and development
Frequency Response:10 Hz~20 kHz±0.2 dB, 1 Hz~23 kHz(±1.0 dB)
Frequency Weighting: A, C, F(Flat)
Time Weighting: F, S, and linear average
Measuring Upper Limit: 130 dB(A),(re. 20 μPa) Self-generated Noise: <18 dB(A), 23 dB(C), 28 dB(Z)
Measurement of Peak C sound level: 50~143 dB Linearity Range: 90dB
Sampling Frequency：48 kHz A/D bits: 24 bits
Integrating Time: Manual, 10s, 1min, 10min, 15min,20min, 1h, 4h, 8h, 24h
Anti-aliasing Filter: Cutoff frequency is 23.5 kHz and stopband attenuation is 100 dB
List of optional software
Input
Microphone: 1/2" Prepolarized Condense Mic. Frequency response: Free field
Sensitivity: 50 mV/Pa Frequency range: 10 Hz~ 20 kHz, ±2 dB
Reference Direction: Axial direction of microphone
Polarized voltage: 0 V
Output
AC output: Max.output voltage: 3.2V, DC output: Output voltage
Output impedence：1 kΩ Output impedence：1 kΩ
Indicator: 240×160 matrix LCD, with EL background lighting Data Storage. 256 kB Flash, or transferred to the Flash disk
RS232C interface: To mini-printer or PC USB Interface: Mini B,Complying with USB 1.1, and USB 2.0, to PC
Power Supply
Battery: 4×LR6 batteries Operating Current: 80 mA
Battery Life: Approx. 8 hours Ext. AC/DC adaptor: 5V, 200mA
Environmental
Temperature: -10 ℃~+ 50 ℃
Humidity: 25 %~90 % (R.H)
Atmospheric Pressure: 650 hPa~1080 hPa
Electromagnetic compatibility: Comply with the requirements of IEC 61672 standard on X type
Physical
Dimension(L×W×H): 290mm×90mm×38 mm
Weight: < 0.5 kg (including batteries)
Accessories:
Included: 1/2" Prepolarized Condense Mic. × 1 Windscreen S 80 mm × 1
Battery LR6 × 4 Instruction Manual x 1
Carrying case × 1 Software disk × 1
Available: Sound Level Calibrator Mini-printer: UP40TS × 1
Tripod × 1 Paper for mini-printer 5 m
Mic. Preamp. Extension Cable × 1 2 m Mic. suppor rod × 1
