美國Ohmic UPM-DT-50SP超聲功率計，50 mW分辨率
測量超聲功率的最可靠和可重復(fù)的手段是通過輻射力法。要測試的傳感器位于45°空氣錐形目標(biāo)上方的脫氣水中。該聯(lián)軸器是用精度達到±0.15瓦的精密天平。當(dāng)聲能施加到錐體時，合力與總輻射功率成正比。測試箱內(nèi)襯聲波吸收橡膠以防止聲反射。天平被編程為將毫克量級的力直接轉(zhuǎn)換為具有良好分辨率的以瓦特為單位的讀數(shù)。功率計的測量精度可以通過在錐體的支撐臂上放置校準(zhǔn)的重量來驗證。
UPM-DT-50SP超聲功率計的特點：
? 分辨率：50mW（150 mW，以克模式）
? 測量范圍：0至30瓦
? 頻率范圍：.5至10mHZ
? 測量脈沖或連續(xù)功率
? 可選讀數(shù)，單位為瓦或克
? 電池或線路供電
? 數(shù)字液晶顯示
? 可選的RS-232或USB接口
? 自動調(diào)零和穩(wěn)定
? 五點認證（NIST可追蹤）
UPM-DT-50SP超聲功率計電源信息
BC20-21113
除UPM-DT-50SP Rev B和UPM-100SP Rev B以外的所有芬歐匯川電源（通用），用于歐洲，英國，澳大利亞，美國
BC20-21119
UPM-DT-50SP Rev B和UPM-100SP Rev B的電源（通用），帶歐洲，英國，澳大利亞，美國的插頭
UPM-DT-50SP超聲功率計標(biāo)配包括以下附件：
保利案例 - 灰色
通用電源
1克重
校準(zhǔn)NIST溯源校準(zhǔn)證書
用戶手冊
The most reliable and repeatable means of measuring ultrasound power is by the radiation force method. The transducer to be tested is centered above a 45° air-backed cone target in de-gassed water. The coupling is made to a precision balance capable of resolving ± 0.15 watts. When acoustic energy is applied to the cone, the resultant force is directly proportional to the total radiated power. The test tank is lined with sonic absorbent rubber to prevent acoustic reflection. The balance is programmed to convert milligram magnitude forces direct to a readout in watts with good resolution. Measurement accuracy of the power meter can be verified by placing a calibrated weight on the cone’s support arm.
Features for the USP50SP:
? Resolution: 50mW (150 mW in grams mode)
? Measurement range: 0 to 30 Watts
? Frequency range: .5 to 10mHZ
? Measures pulsed or continuous power
? Selectable readout in watts or grams
? Battery or line-powered
? Digital liquid crystal display
? Optional RS-232 or USB interface
? Automatic zeroing & stabilization
? Five point certification (NIST traceable)
Power Supply Information
BC20-21113
Power supply (Universal) for all UPM's except UPM-DT-50SP Rev B and UPM-100SP Rev B w/plugs for EUR, UK, AUS, USA
BC20-21119
Power supply (Universal) for UPM-DT-50SP Rev B and UPM-100SP Rev B w/plugs for EUR, UK, AUS, USA
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