About pressure switches
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This post was last edited by guaiguaididi on 2010-10-26 at 18:57. Which type of pressure switch is more commonly used in applications nowadays – mechanical or electronic? And which one performs better in terms of efficiency? What are the considerations in terms of selection? The HL type with upper and lower limit contacts is a combination of upper limit and lower limit functions; it comes in two types: independent operation of the two contacts (double setting, double circuit) and simultaneous operation of the two contacts (single setting, double circuit). What does \"single setting, dual circuit\" mean here? What are the problems with using a pressure switch, a circuit board for local power isolation, and an I24V power supply?
They are generally passive dry contacts; most of them are electronic, and it seems that three-wire types are quite common.
Reply to 2# I love No. 7: I just looked at two documents; one is indeed a third-generation model, and the other contains the statement: \"2-wire circuit type for use in PLC & DCS input switches.\" Based on that, I assume there is also a 2-wire version； It has two digital output terminals ； There is also a digital output and an analog output; it seems to be able to be used as a voltage transformer, I guess
In practical applications, lifespan, adjustable range, and sensitivity are the three key factors in selecting a pressure switch. Among these, the operating time or number of cycles of the switch, as well as its service life, are very important. Factors such as vibration, shock, overtemperature, overpressure, vacuum start-up, and excessive voltage can reduce its service life.