Laird's latest product is a series of easy-to-use temperature controllers specifically designed for closed loop feedback control of thermoelectric assemblies (TEA).
The PR-59 series proportional controllers are configurable and can be integrated into the system with minimal programming, enabling design engineers to reduce product development time and bring products to market faster. The highly accurate PR-59 series provides ± 0.05 ° C temperature control stability, providing the precise temperature stability required for advanced applications, including analytical instruments, medical diagnostics, medical imaging, photon laser systems, and telecommunications cabinets.
The PR-59 series can be configured for direct power, constant temperature or PID control to protect equipment and optimize system performance. The closed-loop temperature controller has expandable outputs for fans, thermoelectric modules (TEM), thermistors, speed sensors, thermostat switches, alarms and LEDs. The controller can also be used as an independent unit interface via the RS-232 interface to monitor and control parameters and settings in real time.
Proportional controllers are commonly used in heating and cooling systems, and the temperature must remain constant regardless of the ambient temperature. Electrical engineers designing thermal control drive circuits for applications requiring high performance and high reliability compact thermal management solutions will benefit most from the PR-59 series and its easy-to-use graphical user interface. "Said Anders Kottenauer, senior vice president. President of Laird Engineering Thermal Systems.
The PR-59 series uses the feedback from the temperature sensor to change the output of the power supply to control the temperature of the cabinet. The controller uses a proportional adjustment to maintain a constant temperature without the control temperature fluctuating. This is achieved by using the PID algorithm to determine the output value and processing the physically controlled pulse width modulation (PWM) output.
The PR-59 can be installed at the system level and comes with software for connecting to a PC. The company said that settings can be adjusted while running TEA, which is very beneficial for product development.
