1.測量範圍: 30~130dB(分貝)
解析度：0.1dB
2.測量頻率範圍: 31.5~8000Hz
3.精確度：
±1dB(94dB/1KHz)
31.5Hz:±2.0dB
63Hz:±1.5dB
125Hz:±1.5dB
250Hz:±1.4dB
500Hz:±1.4dB
1KHz:±1.1dB
2KHz:±1.6dB
4KHz:±1.6dB
8KHz:+2.1dBto-3.1dB
4.使用0.5吋電容式; 標準尺寸麥克風
5.A&C頻率加權 ; 時間加權快/慢選擇
6.可抓取最大噪音值功能
7.AC電壓訊號輸出孔; 每個範圍，750mVrms
輸出孔：3.5mm直徑耳機插座
8.Size:260 × 87 × 36mm
SOUND LEVEL METER, type 1
Model : SL-4022
FEATURES
Frequency weighting networks are designed to meet the IEC 61672 CLASS 1.
Large LCD display, easy to read.
A & C weighting networks are conformity to standards.
FAST & SLOW dynamic characteristic modes.
AC output for system expansion.
Build in adj. VR, available for easy calibration.
Condenser microphone for high accuracy & long-term stability
Build max. hold reset switch.
Max. Hold function for stored the maximum value on display
Warning indicator for over and under load.
LCD display for low power consumption & clear read-out even in bright ambient light condition.
Used the durable, long-lasting components, including a strong, light weight ABS-plastic housing case.
Compact and light weight plastic housing.
Low battery indicator.
Function
dB (A & C frequency weighting)
Time weighting (Fast, Slow)
Max. hold
Max. hold reset
AC output
Measurement Range
3 ranges ( 30 - 70 dB, 60 - 100 dB, 90 - 130 dB ),
Resolution
0.1 dB.
