阿自倍爾SPS300A/B高精度，高機能型數字壓力檢測器，以一個具有封入液的雙重隔膜（SUS316L）和一個半導體壓力傳感元件作為壓力的傳感部分，用于測量容器內的壓力。SPS300A輸出一個電流信號和一個繼電器接點信號，SPS300B輸出二個獨立的繼電器接點信號。

阿自倍爾SPS300A/B高精度，高機能型數字壓力檢測器，以一個具有封入液的雙重隔膜（SUS316L）和一個半導體壓力傳感元件作為壓力的傳感部分，用于測量容器內的壓力。SPS300A輸出一個電流信號和一個繼電器接點信號，SPS300B輸出二個獨立的繼電器接點信號。SPS300A911B110
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YAMATAKE壓力開關的工作原理：是當系統內壓力高于或低于額定的安全壓力時，感應器內碟片瞬時發生移動，通過連接導桿推動開關接頭接通或斷開，當壓力降至或升額定的恢復值時，碟片瞬復位，開關自動復位，或者簡單的說是當被測壓力超過額定值時，彈性元件的自由端產生位移，直接或經過比較后推動開關元件，改變開關元件的通斷狀態，達到控制被測壓力的目的。壓力開關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壓力開關廣泛應用于家用、商用、汽車制冷系統的高、低壓力保護控制，蒸汽工況和發電站;蓄能器,接收器,閃蒸罐,分離器,洗滌器,煉油裝置。也可適用于各種設備工具的高、低壓力保護控制。但在壓力開關的選擇中，須注意以下幾點：
1.防爆的必要性：防爆形式分為隔爆型和本安型，長野產品多數為隔爆型。
2.是否需要帶指示：根據客戶指示。
3. 接點數量：一接點（一個輸出）或兩接點（兩個輸出）。
4.設定值和壓力范圍的確定：推薦設定范圍在壓力范圍的30%—65%之間，可設定范圍為壓力范圍的15%—90%之間。
5.接斷差的形式：可調式或固定式。
6.是否有脈動：如果壓力有脈動或振動，需要帶節流閥用以抑制脈動壓力對儀表的損傷。
7.帶隔膜的場合：測定腐蝕性、高黏度或溫度過高時，需要選用帶隔膜。
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山武壓力開關主要類別包括常開式和常閉式。主要特點是：
1、采用英制管螺紋快速接頭或銅管焊接式安裝結構，安裝靈活，使用方便，無需特殊的安裝固定。
2、插片式導線式連接方可供用戶任意選定。
3、密封式不銹鋼感應器安全可靠。
4、壓力范圍內可根據用戶任意選定的壓力值進行制造。
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阿自倍爾壓力開關可以廣泛用于石油、化工、冶金、電力、供水等領域中對各種氣體、液體的表壓、絕壓的測量控制，是工業現場理想的智能化測控儀表。壓力開關廣泛用于航空航天和軍工領域，如M1A1坦克、阿波羅飛船、波音747、空客A320、F22、F117等產品制造。