Digital Temperature Controllers 

A digitaltemperature controller is an electronic device used to maintain the temperature of an item at a constant level. This device performs calculations according to the deviation between the set point and the different values of temperature recorded. Next, it works to control the level of temperature at the same that is the set point with minimal overshooting or undershooting. It is possible that the response may differ and this is because the physical traits of the controlled object and the control method of the temperature controller. In case, you find that the logged values are different from the set point, the digital controller will send out signals via the sensor to start or stop a control loop process that regulates temperature.

The digital temperature controller is based on microprocessor-based technology that helps record electronic temperature levels. For this, the device works through the use of a sensor and checks them against the desired set point. On return, the environmental sensor gives feedback about the temperature through signals to the set point. In practice, the set point is the control amount that functions as the intended target temperature. With the progress in science and industry, temperature indicators have been utilized through different devices such as chemical heater, microwaves and other systems that address heating, ventilation, and air conditioning. The digital temperature controllers are designed specifically to deal with the regulation of temperature. Depending on the appliance, they could either be digital or analog.

Uses of Digital Temperature Controller

Digital temperature controllers are used in a wide variety of industries to manage manufacturing processes or operations. Some common these devices are: plastic extrusion and injection moulding machines, thermo-forming machines, packaging machines, food processing, food storage, and blood banks. In heat treat, digital temperature controllers are used in ovens applications within furnaces, ceramic kilns, boilers, and heat exchangers. In packaging, it is used in machinery equipped with glue applicators, hot melt functions, shrink wrap tunnels or label applicators. In plastics, temperature control is applied on portable chillers, hoppers and dryers and moulding and extruding equipment.

Types of Digital Temperature Controllers

Analog: This is simplest and the most basic temperature controller type, which is low cost and which is versatile for rugged, reliable process control in harsh industrial environments.

Limit: This type of digital temperature controller provides control over process temperature and is independent safety devices to be used alongside an existing control loop.

Valve Motor Drive:  This controller is specifically designed to control valve motors used in manufacturing applications such as gas burner control on a production line.

Profile: This temperature controller allows operators to program a number of set points and the time to sit at each set point.

Multi-Loop: This controller can control more than one loop, which means it can accept more than one input variable.

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