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特色
- 測量範圍 : 30dB ~ 130dB(分貝)
- 測量頻率範圍 : 31.5 ~ 8000Hz
- 精確度 : ±1dB (94dB/1KHz)
- 符合國際規範IEC61672 Class2
- A/C頻率加權及時間加權選擇'快&慢選擇
- 可抓取最大噪音值功能
- AC電壓訊號輸出
- Size : 260 x 87 x 36mm.
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.
一般規格
顯示 (Display)
- 1 8 mm (0.7") LCD (Liquid Crystal Display), 3 1/2 digits.
功能 (Function)
- dB (A & C frequency weighting)
- Time weighting (Fast, Slow)
- Max. hold
- Max. hold reset
- AC output
測量範圍 (Measurement Range)
- 3 ranges ( 30 - 70 dB, 60 - 100 dB, 90 - 130 dB ),
解析度 (Resolution)
- 0.1 dB.
精確度 (Accuracy) (23± 5 ℃)
- Frequency weighting meet IEC 61672 Class 1, calibrating input signal on 94 dB the accuracy of frequency weighting is specified as following:
- 31.5 Hz : ± 2.0 dB
- 63 Hz : ± 1.5 dB
- 125 Hz : ± 1.5 dB
- 250 Hz : ± 1.4 dB
- 500 Hz : ± 1.4 dB
- 1 KHz : ± 1.1 dB
- 2 KHz : ± 1.6 dB
- 4 KHz : ± 1.6 dB
- 8 KHz : + 2.1 dB to -3.1 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 16 KHz
- * Accuracy is tested within 31.5 Hz to 8 KHz.
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 70 dB, 60 to 100 dB, 90 to 130 dB, 40 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.
- * The "Fast" & "Slow" response range are designed to meet IEC 61672 class 2 requirement.
輸出訊號 (Output Signal)
- Build in external calibration VR, easy to calibrate on 94 dB level by screw driver.
- Internal oscillation system, 1 KHz sine wave generator.
輸出端子 (Output terminal)
- 3.5 mm dia. phone output terminal is provided for connection with analyzer, level recorder, tape recorder.
校正 VR (Calibration VR)
- * Build in external calibration VR, easy to calibrate by external screw driver.
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)
- DC 9V battery x 2 PCs, 006P, MN1604 ( PP3 ) or equivalent, heavy duty or alkaline type.
電源損耗 (Power Consumption)
- Approx. DC 17 mA.
重量 (Weight)
- 450 g/0.99 LB
尺寸 (Size)
- 260 x 87 x 36 mm ( 10.2 x 3.4 x 1.4 inch ).
附件 (Standard Accessory)
- Instruction Manual...................... 1 PC.
- Calibration screw ...................... 1 PC.
- Carryin................................. 1 PC.
選購附件 (Optional & accessories Temp. Probe)
- 94 dB Sound Calibrator, model : SC-941.
- 94/114 dB Sound Calibrator, model : SC-942.
- Windhield ball, model : SB-01.
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