Applied Thermal Control KTC Specifications download pdf (Page 5)

“Needs” × “Evolution”

Customers’ needs and OIL MATIC’s evolution

* The graph was illustrated in consideration of market trends.

Working accuracy

OFF control

Developed OIL MATIC, a temperature regulator with ON-OFF

control using thermostats, to control hydraulic fluid temperature at

constant temperature throughout the year.

Commercialized a temperature regulator with ON-OFF control using

thermistor sensors.

Gas bypass

OFF control

Provided refrigerant gas bypass and an electromagnetic

valve on a refrigerant circuit to enable the opening and

closing of the valve according to preset temperature.

PID control

(Eliminates steady-state deviation of

ON-OFF control)

Commercialized a temperature

regulator with PID control using

a refrigerant flow control valve

provided in a refrigerant circuit

for variable control of valve

opening.

Precision

improvement

of OIL MATIC (improve

ment in temperature control accuracy)

nverter PID control

Commercialized a temperature regulator

with inverter PID control using an

inverter-type chiller.

Realized high responsiveness by

incorporating conventional feedback control

and new feed-forward control in

combination.

Commercialized products with sophisticated

inverter controller and high-efficiency heat

exchanger to meet requirements for

high-precision, high-responsiveness, and

energy-saving products.

Application to microfabrication

machines

Commercialized a high-precision

temperature regulator to respond to

advances in microfabrication.

Application to

ultra-precision machining

machines

Commercialized a product

incorporating new ultra-precision

temperature control technology and

a high-precision pressure control

technology.

Year

Liquid temperature fluctuation

Precision

improvement

of machine tools (improvement in working accuracy = imp

rovement in shape accuracy)

1982 -

1965 -

Current trend

1991 -

1 2 3 4 5 6 7 8 9 10 ... 39 40

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Applied Thermal Control KTC Specifications Page 5

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