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SL-4011 噪音計
特色
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測量範圍 : 30dB ~ 130dB (分貝).
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測量頻率範圍 : 31.5 ~ 8000Hz
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精確度 : ±1.5dB (94dB/1KHz)
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符合國際規範IEC651Type2
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反應時間 : 快速 : 0.2秒 ' 慢速 : 1.5秒
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A/C加權網路測量選擇(Weighting)
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可抓取最大測量值功能
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交流/直流訊號輸出,可外接記錄器
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Size : 255 x 70 x 28mm.
FEATURES
► Large LCD display, easy to read.
► Frequency weighting networks are designed to meet the IEC 61672 CLASS 2.
► A & C weighting networks are conformity to standards.
► Time weighting(FAST & SLOW) dynamic characteristic modes.
► AC/DC output for system expansion.
► Build in adj. VR is available for easy calibration.
► Condenser microphone for high accuracy & long-term stability.
► 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.
► Small and light weight design allow one hand operation.
► Low battery indicator.
一般規格
顯示 (Display)
- 18mm (0.7") LCD (Liquid Crystal Display), 3 1/2 digits.
功能 (Function)
- dB (A & C weighting), Time weighting (Fast, Slow), Max. hold, AC output, DC output.
測量範圍 (Measurement Range)
- 3 ranges, 30 to 130 dB, input signal only..
解析度 (Resolution)
- 0.1 dB.
精確度 (Accuracy) (23± 5 ℃)
- Frequency weighting meet IEC 61672 class 2, calibrating input signal on 94 dB ( 31.5 Hz to 8 kHz), the accuracy of frequency weighting is specified as following:
- 31.5 Hz : ± 3.5 dB ; 63 Hz ± 2.5 dB ; 125 Hz ± 2.0 dB
- 250 Hz ± 1.9 dB ; 500 Hz ± 1.9 dB ; 1 K Hz ± 1.4 dB
- 2 K Hz ± 2.6 dB ; 4 K Hz ± 3.6 dB ; 8 K Hz ± 5.6 dB
加權網路 (Weighting Network)
- Characteristics of A & C.
- A weighting - The characteristic is simulated as "Human Ear Listing" response. Typical, if making the environmental sound level measurement, always select to A weighting.
- C weighting - The characteristic is near the "FLAT" response. Typical, it is suitable for checking the noise of machinery (Q.C. check) & knowing the sound pressure level of the tested equipment.
測量頻率 (Measurement Frequency)
- 31.5 Hz to 8,000 Hz.
校正器 (Calibrator)
- B & K (Bruel & kjaer), multi-fuction acoustic calibrator, model : 4226.
麥克風 (Microphone type)
- Electric condenser microphone.
麥克風尺寸 (Size of microphone)
- 1/2 inch standard size.
範圍選擇 (Range selector)
- 30 to 80 dB, 50 to 100 dB, 80 to 130 dB, 50 dB on each step, with over & under range indicating.
快慢時間加權 Time weighting (Fast, Slow)
- Fast - t= 200 ms, Slow - t = 500 ms,
- * "Fast" range is simulated the human ear response time.
- * "Slow" range is easy to get the avg. values of vibration sound level.
校正 (Calibration)
- * Build in external calibration VR, easy to calibrate by external screw driver.
輸出訊號 (Output Signal)
- AC output - AC 0.5 Vrms corresponding to each range step.
- DC output - DC 0.3 to 1.3 VDC, 10 mV / per dB.
- Output impedance - 600 ohm.
輸出端子 (Output terminal)
- 3.5 mm dia. phone output terminal is provided for connection with analyzer, level recorder, tape recorder.
操作溫度 (Operating Temp. )
- 0 to 50 ℃. ( 32 ℉ to 122 ℉ ).
操作溼度 (Operating Humidity)
- Less than 80% R.H.
電源供應 (Power Supply)
- 006P DC 9V battery (heavy duty type)
電源損耗 (Power Consumption)
- Approx. DC 6 mA.
重量 (Weight)
- 280 g/0.62 LB (including battery).
尺寸 (Size)
- 255 x 70 x 28 mm (10.0x2.8x1.1 inch).
附件 (Standard Accessory)
- Instruction manual.................... 1 PC
選購附件 (Optional & accessories Temp. Probe)
- 94 dB sound calibrator, SC-941
- 94 dB/114 dB sound calibrator, SC-942
- Hard carrying case, Model : CA-06.
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