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Fuji Electric was established in 1923 as a capital and technology tie-up between Furukawa Electric, a spinoff from Furukawa zaibatsu company, and Siemens AG. [4] [5] The name "Fuji" is derived from Furukawa's "Fu" and Siemens' "Ji", since German pronunciation of Siemens is written jiimensu in Japanese romanization.
For example, a temperature-controlled circulating bath has two PID controllers in cascade, each with its own thermocouple temperature sensor. The outer controller controls the temperature of the water using a thermocouple located far from the heater, where it accurately reads the temperature of the bulk of the water.
The first Eurotherm company, Eurotherm Controls, [2] was formed in 1965 at Worthing, West Sussex to manufacture temperature controllers.In 1970, the directors of the company set up a number of loosely related but independent companies to develop and produce other product lines.
The advantage of the low voltage control system is the ability to operate multiple electromechanical switching devices such as relays, contactors, and sequencers using inherently safe voltage and current levels. [15] Built into the thermostat is a provision for enhanced temperature control using anticipation.
Thermoelectric cooling uses the Peltier effect to create a heat flux at the junction of two different types of materials. A Peltier cooler, heater, or thermoelectric heat pump is a solid-state active heat pump which transfers heat from one side of the device to the other, with consumption of electrical energy, depending on the direction of the current.
Series 30A was a three axis (milling) NC controller that used stepper motors. Resolution was 10μm. FANUC 30 Series B Series 30C had a 1μm resolution FANUC 2000 Series A Series 2000C was a 2 axis (usually lathe) CNC controller that used DC thyristor drives and had a 1 μm resolution. User memory was optional.
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