Home / Author Archives: HEAT-TECH info

Author Archives: HEAT-TECH info

5-2.SSR

SSR is a solid state relay made of semiconductor. ■ Features of mechanical relay ① Voltage output and voltage output can be controlled simultaneously. ② Both current and voltage can be controlled simultaneously with current output. ③ AC output and ...

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4-12.Communication function

The communication function of the temperature controller and indicator controller has been gradually increased and enhanced. ① The simplest signal is the ON-OFF signal. The normal value or abnormal value can be output to the higher order by “ON-OFF” signal. ...

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4-11.Heating / cooling control function

■ What is heat/cool control? For example, when conducting a performance evaluation test for electronic equipment, it is necessary to control the heater and cooling mechanism simultaneously. Heating / cooling control refers to a method in which one controller operates ...

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4-10.Auto tuning function / Self tuning function

In order to perform good control with a PID controller, it is necessary to set an appropriate PID constant according to the control target. Adjusting the PID constants is called “tuning”. When analog controllers were at their peak, operators tuned ...

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4-7.Proportional derivative (PD) control

Differential (PD) control is used to improve control response. Unlike the integral control, the derivative control has no control ability by itself. Used in conjunction with proportional control as proportional differential control. Differential control uses the rate of change of ...

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4-6.Proportional integral (PI) control

It is thought that it can be controlled well by proportional control, but in reality, there is a problem when the current value approaches the set value. That is, the amount of operation becomes too small, and it becomes impossible ...

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4-4.Proportional (P) control

In the ON-OFF control, when the heating output (operating amount) is 0% or 100%, the control result overshoots due to the effect of detection and reaction delay, and cycling is repeated. Cycling is inevitable with ON-OFF control because it performs ...

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4-3.Hysteresis control

If it is turned ON and OFF at one point, the output will be chattered and will be more susceptible to noise. For this reason, as shown in the figure, heating control usually has a range of ON-OFF, such as ...

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4-2.ON-OFF control

If the current temperature is lower than the set value, turn on the heater to heat. When it becomes higher than the set value, turn off the heater and cool naturally. The control method that keeps the temperature constant by ...

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4-1.Glossary

Control Control is derived from the Latin contrarotulare, where contra means “to” and rotarye means “scroll”. When these are combined, the control comes from the fact that “if there is a difference, it will be corrected according to the authority ...

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3-8.Nitrogen cooling

Daniel Rutherford Nitrogen keeps gas up to -195.8℃. Liquid up to -210℃. If it exceeds -210℃, it becomes ice and solidifies. It is often used as an inexpensive coolant. Liquid nitrogen is often used as a coolant, but also as ...

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3-7.Chilled water cooling

Cooling things with water has been practiced since ancient times. With direct cooling of cooling watermelon with well water, There is indirect cooling that water is injected and cooled by heat of vaporization. We use both for fire fighting. Such ...

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3-6.Air cooling

It is performed from old days to use the air to cool a thing. Whizz to cool the hot water. Blow with a fan. It can be done with human power. Whizz means that air is accumulated in the mouth ...

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3-5.Steam heating

What is steam Industrially, steam is sometimes used as a heating source. Although it is rare to heat with steam at home, the water oven “Hercio” developed by Sharp has a catchphrase of “bake with water” cooking with overheated steam, ...

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3-4.Infrared heater

● What is a Air Blow Heater? Although it is not visible, because the light with the power which warms a thing existed “outside red”, it was named “infrared rays.” Infrared rays are the same “Electromagnetic waves” as “X-rays”, “Ultraviolet ...

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3-3.Air Blow heater

● What is a Air Blow Heater? Super Small Heating Device High heating for Gas and Air,  Easy management temperature Simple, safe, clean, super-small high temperature heating device, using air as ubiquitous material. “Air Blow Heater” considers the resources problem, ...

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3-2.Features of resistance heating heaters

Resistance heating has the following features and is most popular for both home and industrial use. 1.Efficient because electric energy becomes 100% heat. 2.Since the amount of heat is equal to the amount of electricity, measurement and management are easy. ...

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3-1.Various heating equipment

Heating equipment includes 1. Directly burning fuel such as gas or oil to produce heat, 2. Separately, solar heat 3. Further geothermal 4. Steam made with the heat source, 5. Electricity made with steam And there are several types. Among ...

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