电子压力开关与机械压力开关
Electronic pressure switches Vs mechanical pressure switches

所以你在市场上寻找压力开关，但你应该选择电子还是机械？ 正如在此深入比较中所解释的那样 ，每种方法都有其优点和缺点。

机械压力开关如何工作？

机械压力开关 将流体压力转换为机械运动，从而驱动压力开关装置中的机械开关触点。 该开关将对开关点进行可配置或预设的机械调整，并在其启动时提供电气开关输出信号——无需电源。

这些通常简单的设备通常是为可靠性或低成本应用而构建的。 这取决于开关信号需要传输的频率。 例如，它们可以针对高需求（涉及频繁的开关周期，例如在过程控制中）或低需求（需要最少的开关周期，例如在安全应用中）而设计。 机械压力开关通常不允许调节滞后，并且开关的复位点由工厂设置预先设置，因此也无法配置。

何时使用机械压力开关

当价格和单个开关触点是主要考虑因素时，机械压力开关可能是理想的选择。 它们还非常适合需要冗余且大部分处于休眠状态的安全防护装置的 安全关键应用 ，当压力超过某个预设阈值时，该防护装置可提供即时开关信号。 然而，由于机械磨损和导致过早失效，它们不是用于过程控制的电子系统的首选。

电子压力开关如何工作？

电子压力开关 提供电子开关输出信号。 它们通常还产生与压力成比例的附加模拟输出信号。 电子压力开关在出厂时设置为最佳开关点，或者由于集成显示器和按钮而可以在现场进行编程。 它们的集成可编程逻辑允许根据应用定制开关点和输出信号。

现代电子压力开关的众多可编程功能包括迟滞、延迟时间、常闭或常开和窗口功能。 它们还提供恒定的压力读数并指示开关输出是否处于活动状态。 IO-Link 技术还可用于通过信号电缆进行远程编程。

何时使用电子压力开关

电子压力开关适用于需要稳定性、多开关点和控制灵活性的应用，例如控制和自动化设备。 它们是需要灵活编程和调整、本地指示显示和额外模拟输出信号的安装的理想选择。

无论您的应用是什么， Barksdale 都能为您提供机械和电子开关解决方案。 例如，他们全新的 BPS3000 电子双压力开关 具有 320 度可旋转 4 位显示屏、多种配置和 EMI 保护。 他们还拥有广泛的机械压力开关，包括：金属隔膜真空和压力开关； 紧凑型压力开关； OEM 隔膜密封活塞压力开关； 和波登管压力开关等等。

有关 Barksdale 全系列开关产品的更多信息，请联系 010-84282935 或访问 www.barksdaleproducts.com。

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.

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.barksdaleproducts.com.