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電子壓力開關(guān)與機(jī)械壓力開關(guān)
Electronic pressure switches Vs mechanical pressure switches
所以你在市場上尋找壓力開關(guān)，但你應(yīng)該選擇電子還是機(jī)械？ 正如在此深入比較中所解釋的那樣 ，每種方法都有其優(yōu)點(diǎn)和缺點(diǎn)。
機(jī)械壓力開關(guān)如何工作？
機(jī)械壓力開關(guān) 將流體壓力轉(zhuǎn)換為機(jī)械運(yùn)動(dòng)，從而驅(qū)動(dòng)壓力開關(guān)裝置中的機(jī)械開關(guān)觸點(diǎn)。 該開關(guān)將對開關(guān)點(diǎn)進(jìn)行可配置或預(yù)設(shè)的機(jī)械調(diào)整，并在其啟動(dòng)時(shí)提供電氣開關(guān)輸出信號(hào)——無需電源。
這些通常簡單的設(shè)備通常是為可靠性或低成本應(yīng)用而構(gòu)建的。 這取決于開關(guān)信號(hào)需要傳輸?shù)念l率。 例如，它們可以針對高需求（涉及頻繁的開關(guān)周期，例如在過程控制中）或低需求（需要最少的開關(guān)周期，例如在安全應(yīng)用中）而設(shè)計(jì)。 機(jī)械壓力開關(guān)通常不允許調(diào)節(jié)滯后，并且開關(guān)的復(fù)位點(diǎn)由工廠設(shè)置預(yù)先設(shè)置，因此也無法配置。
何時(shí)使用機(jī)械壓力開關(guān)
當(dāng)價(jià)格和單個(gè)開關(guān)觸點(diǎn)是主要考慮因素時(shí)，機(jī)械壓力開關(guān)可能是理想的選擇。 它們還非常適合需要冗余且大部分處于休眠狀態(tài)的安全防護(hù)裝置的 安全關(guān)鍵應(yīng)用 ，當(dāng)壓力超過某個(gè)預(yù)設(shè)閾值時(shí)，該防護(hù)裝置可提供即時(shí)開關(guān)信號(hào)。 然而，由于機(jī)械磨損和導(dǎo)致過早失效，它們不是用于過程控制的電子系統(tǒng)的首選。
電子壓力開關(guān)如何工作？
電子壓力開關(guān) 提供電子開關(guān)輸出信號(hào)。 它們通常還產(chǎn)生與壓力成比例的附加模擬輸出信號(hào)。 電子壓力開關(guān)在出廠時(shí)設(shè)置為最佳開關(guān)點(diǎn)，或者由于集成顯示器和按鈕而可以在現(xiàn)場進(jìn)行編程。 它們的集成可編程邏輯允許根據(jù)應(yīng)用定制開關(guān)點(diǎn)和輸出信號(hào)。
現(xiàn)代電子壓力開關(guān)的眾多可編程功能包括遲滯、延遲時(shí)間、常閉或常開和窗口功能。 它們還提供恒定的壓力讀數(shù)并指示開關(guān)輸出是否處于活動(dòng)狀態(tài)。 IO-Link 技術(shù)還可用于通過信號(hào)電纜進(jìn)行遠(yuǎn)程編程。
何時(shí)使用電子壓力開關(guān)
電子壓力開關(guān)適用于需要穩(wěn)定性、多開關(guān)點(diǎn)和控制靈活性的應(yīng)用，例如控制和自動(dòng)化設(shè)備。 它們是需要靈活編程和調(diào)整、本地指示顯示和額外模擬輸出信號(hào)的安裝的理想選擇。
無論您的應(yīng)用是什么， Barksdale 都能為您提供機(jī)械和電子開關(guān)解決方案。 例如，他們?nèi)碌?BPS3000 電子雙壓力開關(guān) 具有 320 度可旋轉(zhuǎn) 4 位顯示屏、多種配置和 EMI 保護(hù)。 他們還擁有廣泛的機(jī)械壓力開關(guān)，包括：金屬隔膜真空和壓力開關(guān)； 緊湊型壓力開關(guān)； OEM 隔膜密封活塞壓力開關(guān)； 和波登管壓力開關(guān)等等。
有關(guān) Barksdale 全系列開關(guān)產(chǎn)品的更多信息，請聯(lián)系 010-84282935 或訪問 www.85755448.com.cn。
Electronic pressure switches Vs mechanical pressure switches
So you're in the market for a pressure switch, but should you go electronic or mechanical? Each has its benefits and drawbacks, as explains in this in-depth comparison.
How do mechanical pressure switches work?
Mechanical pressure switches convert fluid pressure into a mechanical movement, which actuates a mechanical switch contact in the pressure switch device. The switch will have a configurable or pre-set mechanical adjustment of the switch point and provides an electrical switch output signal whenever it is actuated – without needing a power supply.
These generally simple devices are normally built for reliability or with low-cost applications in mind. It depends on how frequent the switch signal needs to be transmitted. For instance, they can either be designed for high demand (involving frequent switching cycles, such as in process control) or low demand (requiring minimal switching cycles, like in safety applications). Mechanical pressure switches do not normally allow for adjustment of the hysteresis and the reset point for switching is pre-set by factory setup, so cannot be configured either.
When to use a mechanical pressure switch
When price and single switch contacts are the primary concern, mechanical pressure switches can be the ideal choice. They are also perfect for safety critical applications that require a redundant, and largely dormant, safety guard that provides an instant switch signal when pressure crosses a certain pre-set threshold. They are not first choice in electronic systems for process control however, due mechanical wear and resulting premature failures.
How do electronic pressure switches work?
Electronic pressure switches provide electronic switch output signals. They often also produce an additional analogue output signal proportional to the pressure. Electronic pressure switches are factory set to optimal switch points or are programmable on-site thanks to integrated displays and buttons. Their integrated programmable logic allows for the switch points and output signal to be tailored to the application.
Among the many programmable functions of modern electronic pressure switches are hysteresis, delay time, normally closed or normally open and window function. They also provide constant pressure readings and indicate whether the switch outputs are active or not. IO-Link technology can also be used for remote programming via the signal cable.
When to use an electronic pressure switch
Electronic pressure switches are suitable for applications that demand stability, multiple switch points and flexibility of control – such as for control and automated equipment. They are the desired choice for installations requiring flexible programming and adjustment, local indication display and extra analogue output signals.
Whatever your application, Barksdale has the mechanical and electronic switch solution for you. For instance, their brand new BPS300 Electronic Dual Pressure Switch features a 320-degree rotatable 4-digit display, multiple configurations and EMI protection. They also have an extensive range of mechanical pressure switches, including: Metal Diaphragm Vacuum and Pressure Switches; compact pressure switches; OEM Diaphragm Seal Piston Pressure Switches; and Bourdon Tube Pressure Switches to name but a few.
For more information about Barksdale's full range of switch products please contact 010-84282935 or visit www.85755448.com.cn.
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