Castle NK117 环境4天系统（1级，1/3八度，12.5 Hz-20 kHz）

-Applicable Standards: IEC 61672-1:2013,IEC 61672-1:2014 (Where Octave Brands Fitted), IEC 61672:1993 amendment 1:2000 (Where Exposure Fitted)
-Microphone: Type 1 Pre-Polarised 1/2" (13.2 mm), Electrate Condenser Microphone-27 dB + 2 dB re 1V/Pa
-Measurement Range: Linear Operating Range: 95dB
-Noise Floor:  
+ A Weighting <15 db="" a="" rms="" br=""> +C Weighting <18 db="" c="" rms="" br=""> +Z Weighting <18 db="" z="" rms="" br=""> -Frequency Weightings:
+Measurement 1:A, C or Z
+Measurement 2:A, C or Z
-Frequency Range: 1Hz-20 kHz (electrical characteristics). Class 1: 12.5 Hz-20 kHz (Including microphone)
-Time Weighting:
+Measurement 1: Slow, Fast, Impulse
+Measurement 2: Slow, Fast, Impulse
-Display: 2.4 inch Full Colour TFT 240x320 pixels  
-Dual Measurements: Simultaneous dual measurement with independent time and frequency weightings.
-Measurement Parameters:  dBAir Environmental Octave: LSPL, LE, LEQ, LMAX, LMAX, Peak, Ltm3, Ltm5, Lday, Lnight, Ldn, Lden, NA, 10 userdefinable Ln values (pre-set to: L1, L2, L5, L10, L50, L90, L95, L98, L99) plus LAF* for Noise act assessment. 1/1 or 1/3. Octaves: LSPL, LE, LEQ, LMAX, LMAX, Lns, Peak
-Time History:
+ Short Interval: 10ms to 60m
+ Long Interval: 1s to 24h
+ Smart Timer, Duration Timer or Interval Timer
- Memory: 16GB
- Input / Output Connection: Micro USB Type B
- Power: Batteries: 4 x AA (1.5V), Approximately 16 hours continuous operation (screen settings dependent), USB Socket
- Dimensions:
+Including Pre-Amplifier: 210mm (H) x 70mm (W) x 30mm (D)
+Excluding Pre-Amplifier: 145mm (H) x 70mm (W) x 30mm (D)
-Weight: 480g approximately (including batteries)
-Includes:
+ GA141EO dBAir Environmental Octave (1/3) Class 1
+ GA607 Calibrator, Dual Level, Class 1 (includes GA690 Barometer)
+ CCPROFREE FREE Pro Account for Castle Cloud - 5 Users (1 Year) (For Systems)
+ MW404 Weatherproof Microphone Housing for dBAir
+ KA023 Weatherproof Kit Case for dBAir (4 Day)
+ ZL2141-03 Weatherproof Microphone Cable for KA022 3m 1
+ KT102 Heavy Duty Tripod (Up to 1.6m high) 1
 

datasheet