有賣測分貝數或空氣污染指數的儀器嗎? - 空氣污染
By Odelette
at 2005-04-05T00:00
at 2005-04-05T00:00
Table of Contents
請有買過或知道的人能講一下~及在哪買~謝謝喔~
Tags:
空氣污染
All Comments
By Regina
at 2005-04-07T23:01
at 2005-04-07T23:01
圖片參考:http://www.tecpel.com.tw/Other/Dsl-330.jpg
☆ 測量範圍 30 dB 至130 dB☆ 準確度:1.5 dB(在參考音壓位準, 94dB@1KHz)☆ 解析度 :4位數, 解析度 0.1dB, 數值更新: 2次/秒☆ 快(FAST)和慢(SLOW)響應時間選擇☆ 最大、最小讀值鎖定 ☆ 過範圍或低範圍檔位指示 ☆ AC和DC類比信號輸出, 可連接至頻率分析儀或 X-Y 軸記錄器 做數據統計分析 DC =10mV/dB, 輸出阻抗100Ω AC =1Vrms(每範圍檔), 輸出阻抗50Ω型 號 : DSL 330點入放大圖像Specifications : Level Range: Lo = 35-80 dB, Med = 50-100 dB, Hi = 80-130 dB Frequency Weighting: A ,C Time Weighting: Fast, Slow Accuracy: ±1.5dB (under reference condition) AC output: Voltage 1Vrms (at full scale) DC output: Voltage 10mVdB Output impedance: approx. 600Ω AC;500Ω DC Dynamic Range: 50 dB Frequency Range: 31.5Hz to 8kHz General Power Requirement: One piece 9V battery NEDA 1604 Dimensions: 10.8"x2.5"x1.2" (275x64x30mm) Weight: 9.82 oz(280g) Accessories: 9V battery, Carrying case, calibration screwdriver windscreen and owners manual. 泰菱有限公司台北市110崇德街31巷5弄13號1樓Tel : (02)2737-5866 FAX : (02)2737-3343E-MAIL: [email protected] Web-site: http://www.tecpel.com/
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