Castle GA141S 安全声级计（1级，12.5Hz - 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: Class 1 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: 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 Safety: LSPL, LEQ, LMAX, LMAX, Peak, LEPd, Exposure Points, Dose, Hearing Protector Calculator
-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)
-Accessories standard for all model: 
+ Windshield KG205
+ dBAir Micro USB Cable

datasheet