| ˙ | Size : 260 × 87 × 36mm 電氣規(guī)格： | 顯 示 器 | 18mm LCD，3 1/2 digits | | 測量功能 | dB（A&C frequency weighting）, Time weighting（Fast, Slow）, Max hold, Max hold reset, AC output | | 測試範圍 | 3 ranges （ 30 - 70 dB、60 - 100 dB、90 - 130 dB ） | | 解 析 度 | 0.1 dB | | 精 確 度 | Time weighting & frequency weighting meet IEC 651 type 1, calibrating input signal on 94 dB
（31.5 Hz to 8 kHz）, the accuracy of A weighting is specified as following:
31.5 Hz - ± 1.5 dB, 63 Hz -± 1.5 dB, 125 Hz - ± 1 dB、250 Hz - ± 1 dB, 500 Hz - ± 1 dB,
1 kHz -± 1 dB、2 kHz - ± 1 dB, 4 kHz - ± 1 dB, 8 kHz - + 1.5 dB to -3 dB | | 頻率加權網路 | 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 | | 測試頻率範圍 | 31.5 Hz to 8,000 Hz | | 校 正 器 | B & K （Bruel & kjaer）, multi-fuction acoustic calibrator, model : 4226 | | 麥克風種類 | Electric condenser microphone. | | 麥克風尺寸 | 1/2 inch standard size. | | 範圍選擇 | 30 to 70 dB、60 to 100 dB、90 to 130 dB，40 dB on each step,with over & under range indicating | | 時間加權網路
（快 / 慢） | Fast - t= 200 ms, Slow - t = 500 ms,
* "Fast" range is simulated the human ear response time weighting.
"Slow" range is easy to get the average values of vibration sound level.
* The "Fast" & "Slow" time weighting range are designed to IEC 651 type 2 requirement | | 校正方式 | Build in external calibration VR, easy to calibrate on 94 dB level by screw driver.
Internal oscillation system, 1 KHz sine wave generator | | 輸出信號 | AC output - AC 0.4 Vrms corresponding to each range step. | | 輸出端子 | 3.5 phone output terminal is provided for connection with analyzer, level recorder, tape recorder. | 一般規(guī)格： | 使用電源 | DC 9V battery x 2 PCs or equivalent,heavy duty or alkaline type. | | 消耗電流 | Approx. DC 17mA. | | 操作環(huán)境溫度 | 0℃ to 50℃ | | 操作環(huán)境濕度 | Less than 80% RH | | 外觀尺寸 | 260×87×36 mm | | 重 量 | 450 g.（including battery） | | 標準配件 | Instruction Manual .................................................... 1 PC
Carrying case............................................................ 1 PC | | 選購配件 | 94 dB Sound Calibrator, model : SC-940, model : SC-941 | |
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