Home > categories > Hydraulic & Pneumatic > Other Valves > How to use current to control valve opening and closing?
Question:

How to use current to control valve opening and closing?

Measure the temperature with a thermocouple, and then how to make the valve open when the temperature reaches a certain value. When the temperature is lowered, will the valve be closed?Or tell my brother what is the knowledge, I can see it myself. Good. How much extra?!

Answer:

You don't know if the precision requirement of high precision can be used for high requirements of valve control valve (4-20mA) control but need converter needs the temperature signal into your current signal control valve (4-20mA) valve door factory will not have this thing you can ask to do control system manufacturers (in tell you part of the valve switch and adjust the price of at least 1000 points (OH) to not give me angry) is something you can ask me the valve factory
A relay or PID controller can achieve this operation, only need to set out, the valve can use electromagnetic valve, which belongs to a rapid opening and closing valves, only need to control the electric power to the valve can automatically open or closed, but the temperature change is large, if you want to keep the temperature constant. The best selection of regulating valve, constant temperature control valve will be before or after the valve, the main electrical control knowledge, do not know what I said is clear, remember the points, thank you!
Switching type (one on and off)Block digital display with the upper and lower limit control valve opening and closing is goodProbably more than 100Regulating type (to keep temperature at a constant value)With PID valve position regulator can be very good controlAbout 300 more

Share to: