山武壓力開(kāi)關(guān)

阿自倍爾SPS300A/B高精度，高機(jī)能型數(shù)字壓力檢測(cè)器，以一個(gè)具有封入液的雙重隔膜（SUS316L）和一個(gè)半導(dǎo)體壓力傳感元件作為壓力的傳感部分，用于測(cè)量容器內(nèi)的壓力。SPS300A輸出一個(gè)電流信號(hào)和一個(gè)繼電器接點(diǎn)信號(hào)，SPS300B輸出二個(gè)獨(dú)立的繼電器接點(diǎn)信號(hào)。

阿自倍爾SPS300A/B高精度，高機(jī)能型數(shù)字壓力檢測(cè)器，以一個(gè)具有封入液的雙重隔膜（SUS316L）和一個(gè)半導(dǎo)體壓力傳感元件作為壓力的傳感部分，用于測(cè)量容器內(nèi)的壓力。SPS300A輸出一個(gè)電流信號(hào)和一個(gè)繼電器接點(diǎn)信號(hào)，SPS300B輸出二個(gè)獨(dú)立的繼電器接點(diǎn)信號(hào)。SPS300A911B110
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YAMATAKE壓力開(kāi)關(guān)的工作原理：是當(dāng)系統(tǒng)內(nèi)壓力高于或低于額定的安全壓力時(shí)，感應(yīng)器內(nèi)碟片瞬時(shí)發(fā)生移動(dòng)，通過(guò)連接導(dǎo)桿推動(dòng)開(kāi)關(guān)接頭接通或斷開(kāi)，當(dāng)壓力降至或升額定的恢復(fù)值時(shí)，碟片瞬復(fù)位，開(kāi)關(guān)自動(dòng)復(fù)位，或者簡(jiǎn)單的說(shuō)是當(dāng)被測(cè)壓力超過(guò)額定值時(shí)，彈性元件的自由端產(chǎn)生位移，直接或經(jīng)過(guò)比較后推動(dòng)開(kāi)關(guān)元件，改變開(kāi)關(guān)元件的通斷狀態(tài)，達(dá)到控制被測(cè)壓力的目的。壓力開(kāi)關(guān)采用的彈性元件有單圈彈簧管、膜片、膜盒及波紋管等。
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AZBIL壓力開(kāi)關(guān)廣泛應(yīng)用于家用、商用、汽車制冷系統(tǒng)的高、低壓力保護(hù)控制，蒸汽工況和發(fā)電站;蓄能器,接收器,閃蒸罐,分離器,洗滌器,煉油裝置。也可適用于各種設(shè)備工具的高、低壓力保護(hù)控制。但在壓力開(kāi)關(guān)的選擇中，須注意以下幾點(diǎn)：
1.防爆的必要性：防爆形式分為隔爆型和本安型，長(zhǎng)野產(chǎn)品多數(shù)為隔爆型。
2.是否需要帶指示：根據(jù)客戶指示。
3. 接點(diǎn)數(shù)量：一接點(diǎn)（一個(gè)輸出）或兩接點(diǎn)（兩個(gè)輸出）。
4.設(shè)定值和壓力范圍的確定：推薦設(shè)定范圍在壓力范圍的30%—65%之間，可設(shè)定范圍為壓力范圍的15%—90%之間。
5.接斷差的形式：可調(diào)式或固定式。
6.是否有脈動(dòng)：如果壓力有脈動(dòng)或振動(dòng)，需要帶節(jié)流閥用以抑制脈動(dòng)壓力對(duì)儀表的損傷。
7.帶隔膜的場(chǎng)合：測(cè)定腐蝕性、高黏度或溫度過(guò)高時(shí)，需要選用帶隔膜。
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山武壓力開(kāi)關(guān)主要類別包括常開(kāi)式和常閉式。主要特點(diǎn)是：
1、采用英制管螺紋快速接頭或銅管焊接式安裝結(jié)構(gòu)，安裝靈活，使用方便，無(wú)需特殊的安裝固定。
2、插片式導(dǎo)線式連接方可供用戶任意選定。
3、密封式不銹鋼感應(yīng)器安全可靠。
4、壓力范圍內(nèi)可根據(jù)用戶任意選定的壓力值進(jìn)行制造。
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阿自倍爾壓力開(kāi)關(guān)可以廣泛用于石油、化工、冶金、電力、供水等領(lǐng)域中對(duì)各種氣體、液體的表壓、絕壓的測(cè)量控制，是工業(yè)現(xiàn)場(chǎng)理想的智能化測(cè)控儀表。壓力開(kāi)關(guān)廣泛用于航空航天和軍工領(lǐng)域，如M1A1坦克、阿波羅飛船、波音747、空客A320、F22、F117等產(chǎn)品制造。