SL-4001 噪音計
SL-4001 SOUND LEVEL METER
Technical Specifications:
– Display:
– Type: LCD (Liquid Crystal Display)
– Size: 18 mm (0.7 inch), 3 1/2 digits
– Measurement Functions:
– Sound Pressure Level (SPL):
– Range: 30 to 130 dB (input signal only)
– Resolution: 0.1 dB
– Accuracy: Frequency weighting meets IEC 61672-1-2013 Class 2 standards
– 31.5 Hz: ±3.0 dB
– 63 Hz: ±2.0 dB
– 125 Hz: ±1.5 dB
– 250 Hz: ±1.5 dB
– 500 Hz: ±1.5 dB
– 1 kHz: ±1.0 dB
– 2 kHz: ±2.0 dB
– 4 kHz: ±3.0 dB
– 8 kHz: ±5.0 dB
– Frequency Weighting Network:
– A weighting: Simulates the human ear response, typically used for environmental sound level measurements.
– C weighting: Provides a near-flat response, suitable for measuring machinery noise and sound pressure levels.
– Frequency Range: 31.5 Hz to 8,000 Hz








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