A set of experimental equipment is being built now; which type of temperature control device can achieve an accuracy of ±0.2℃?
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Is it possible to use one PLC and 2 control valves? How much does it cost approximately
How big is the container? Should we control the air temperature or the liquid temperature? Heat source temperature? Cooling source temperature? ... nothing was explained at all,,, The PID can be punished severely;; even dogs know how much money is needed. It requires 10000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 yuan. Do you have that amount? :lol
With just one PLC and two control valves, I don’t think 0.2 is easy to control.
Speaking of the process, it is essential that the process requirements are met; in addition, programming skills are important, as well as taking preventive measures at the pre-overshoot turning point
It is usually a PID regulator; you might want to take a look at the Shimaden SR90 series of PID regulators from Japan. Our company’s laboratory actually has one set of these, which were designed by someone else.
Well, it depends on the process control method. For precise temperature control, it is necessary to regulate the flow rate; temperature is controlled through this flow rate, and high-precision valves need to be used. The temperature sensing points should be selected at locations that are sensitive to temperature changes
If a PLC and two control valves can maintain the desired temperature levels, then many companies that produce calibration instruments could go out of business: lol
PID control, but you haven’t mentioned anything about your operating environment – how can I give you advice then?~