Precise temperature control in food processing and packaging systems can have great influence over product quality. In addition, tightly controlling temperature can impact energy consumption and process efficiency – which ultimately results in lower cost of operation.
foods, temperature control
is important for food quality.
Today’s flexible packaging
rely on heat for sealing. In a package sealing machine, heat platens apply the
right temperature and pressure for a specified time,
depending on the type of material involved
A shrink tunnel is another type of packaging machine that
needs precise temperature control.
For example, heaters have different rise times depending
on their wattage. A thermostat doesn’t know the difference between heaters.
However, a temperature controller with auto-tuning can calculate and “learn”
the rise speed of a particular heater.
These systems reach their
optimum productive state more quickly and maintain that effectiveness, thus
operating most efficiently.
By ramping up temperature faster, processing and packaging machines
become more energy efficient due to their ability to eliminate waste heat
caused by overshooting.
The Zelio® REG temperature controller
(www.schneider-electric.com) is unique in that it has a proprietary, advanced
control algorithm and built-in PID and auto-tuning, giving it highly precise
control. Zelio controllers can reach the set point value 33 percent faster than
other controllers that do not have combined PID and auto-tuning features.
For use in a variety of intelligent architectures, Zelio
controller models are available with integrated Modbus® to interface
with PLCs and HMI displays. For more active control over temperature in older equipment, Zelio
controllers can be retrofitted to replace static thermostats. Such an upgrade
can allow companies to take full advantage of existing equipment by adding
capabilities rather than investing in all new equipment.
Precise temperature control helps food companies
consistently process and package safe, high-quality products that stimulate
brand preference among consumers. In addition, temperature controllers improve
operational costs by reducing energy consumption and optimizing processes.
Precise temperature control for packaging operations can save energy
April 9, 2012