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ข้อมูลทางเทคนิคของ Sound Level Meter VICTOR 824
1) ความแม่นยำ: ±1.5 dB (under reference conditions).
2)ย่านความถี่: 31.5 Hz~ 8.5K Hz.
3) Linearity range: 50 dB.
4) Measuring level: 30~130 dBA, 30~130 dBC.
5) Frequency weighting: A, C.
6 ) Digital display: 5 digits.
Resolution:0.1dB.
Sampling rate:2times/s.
7) Bar graph: 50 dB scale at 1 dB step for monitoring current sound pressure level display.
8) ช่วงการวัดเสียง: 30-130 dB.
9) Over range indicate: Shows “OVER” or “UNDER” symbol.
10) AC output: 0.707 Vrms at FS output impedance approx 600Ω.
11) DC output: 10 mV / dB output impedance approx 100Ω.
12) Dynamic characteristics: Fast / Slow.
13) Microphone: 1/2 inch condenser microphone.
14) Max: Maximum hold.
15) Power supply: 1*9V battery.
16) Self-inspection time: 10 sec.
17) Operating Temperature: 0℃ to 40℃.
Operating Humidity: 10% to 80% RH.
18)Storage Temperature: 0℃ to 60℃.
Storage Humidity:10% to 70%RH.
19) Dimensions: 200×63×30mm.
12) DC out put terminal: output 10 mV/ dB.
13) Tripod mounting screw.
14) battery door.
15) when the device is under a situation of none operation or none noise for 10 minutes, it will auto power off.
คุณสมบัติ
แบรนด์สินค้า VICTOR รุ่น 824
1) This unit was designed according to the IEC651 TYPE2& ANS S1.4 TYPE2 for sound level meters.
2) Measurement range: 30-130 decibel.
3) With two equivalent weighted sound pressure levels, A and C.
4) Fast & Slow dynamic characteristic modes.
5) AC and DC signed output for frequency analyzer level recorder, graphic recorder.
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