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Details of Selection of Temperature Switches

Release time:2019-09-23    Clicks: Click

 
What problems should we pay attention to when choosing the temperature switch? What are the specific problems? Let's give you a detailed introduction.
Engineers should also pay attention to the distance between the differential stroke of the switch, the tripping position and the reset position. At present, there are many kinds of water-proof switches on the market. General mechanical switch words. It is to add a waterproof cover outside the switch. This also greatly enhances security. Threshold varies with application. For example, in the application of temperature switches. Differential travel should be as low as 0.0001 inches. However, in the application of level pump, the on/off operation point should be as close as possible. If the differential stroke is too close, it may lead to frequent start and stop of the pump, thus shortening the service life of the pump. Precision temperature switches usually have three sizes: basic type, operating handle and housing. The micro switch is designed with a lifelike spring. Engineers are looking for thermostats for residential heating or industrial boiler control. Five key characteristics need to be considered: external dimensions, electrical requirements (voltage/current), reliability (mechanical/electrical life), environmental factors (hazardous environment, temperature switching range) and mechanical certification. Here are five key steps to help you choose a microswitch for a particular application. Or a level switch used in a large tank. Step 1 is important to understand how the external size of the switch affects the selection of other characteristics of the temperature control switch. The size of the switch is directly related to its characteristics. The smallest temperature control switch on the market is 0.5 "x 0.236" x 0.197 "LxWxH", although this miniature switch is suitable for detecting circuit conditions in compact circuit breakers, including current range, stroke and operating force. For example, it usually cuts only 0.1 to 3 amperes of A current and has a short trip. More current is needed
Applications usually require larger switches. For example, in fuel tank applications. The switch should drive the pump directly and transmit large current. This requires a large miniature switch with rated current of 20A or 25A and voltage of 125VA or 250VA. The micro-switch used to detect liquid level needs to be able to provide large stroke and accept large current. It is usually used in liquid level switch applications. The smaller the cut-off stroke and current. Tip: The smaller the switch size is.
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