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.