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在各种需要监控压力变化的场合,可以利用压力开关发出控制信号。它的特点在于能为报警器或控制系统提供简单、可靠的开/关信号,如果不要求控制信号与实际压力成正比时,则压力开关又可用来作转换器。压力开关是一种感受压力直接作用的控制机构,用来接通或断开报警器或被监控的电路。它不象电子发信器或转换器那样复杂,又不需要使用单独的能源。因此,其造价仅为电子发讯器的10～20％。图1所示为压力控制开关结构的图例。当压力作用下,压力弹簧管旋
In a variety of situations need to monitor changes in pressure, you can use the pressure switch to send control signals. It features a simple, reliable on / off signal for the alarm or control system. The pressure switch can be used as a converter if the control signal is not required to be proportional to the actual pressure. A pressure switch is a control mechanism that senses the direct effect of pressure and is used to switch an alarm or monitored circuit on or off. It is not as complex as an electronic sender or converter and does not require the use of a separate energy source. Therefore, its cost is only 10 ~ 20% of the electronic transmitter. Figure 1 shows the pressure control switch structure. When pressure is applied, the pressure spring tube rotates