3.1
Reference Conditions
Frequency:
Sound Level:
Temperature:
Humidity:
Measurement Range:
Incidence Direction:
3.2
Electrical Specifications
Standard: IEC 651, Type 2
Range: Lo - 37 to 80dB
Med - 50 to 100dB
Hi - 80 to 130dB
Resolution: 0.1dB
Precision: ±2.0dB
Accuracy: ±1.5dB (ref 94dB @ 1KHz)
Dynamic Range: 50dB
Frequency Range: 31.5 to 8000Hz
Frequency Weighting: A and C per IEC651
Time Weighting: Slow (S) and Fast (F) per IEC651
Microphone: Electret condenser microphone
Sensor Calibration: Calibrated at factory using a source at 0.2%
Measurement Period: 2.5 times per second
NOTE: For frequencies lower than 100Hz, the difference between two
measuring ranges can be higher than 0.7dB.
8
CHAPTER 3
SPECIFICATIONS
1000Hz
94dB
68°F (20°C)
65%
80-130dB
Frontal
Sound Level Meter Model CA832