Libratherm offers Microcontroller based multiple Ramp / Soak programmable PID temperature controller Model PRC-480 which is designed to improve reliability, accuracy and control for all temperature control applications. It features Ramp and Soak functions (the capability to control the temperature and its rate of change over a predetermined time span). Single patterns of total twenty (ramp/soak) steps can be programmed into the memory using the front panel keyboard. It can also be used as single set point control when the profile control is not desired. Inputs can be Thermocouple, IR Thermocouple, RTD Temperature Sensors, Voltage, Current Signals and etc.
PRC-480 offers both switching outputs in the form of SSR driver for external SSR or external load contactor and continuous control outputs in the form of (4-20)mA or (0-5)volt control signal, which can be used to control heater power through Thyristor power pack (for electrical heating system) or to control the position of a modulating motor valve (for oil or gas fired heating systems). The analog outputs can be directly connected to Libratherm make single phase / three phase SCR phase angle fired power controller which is ideally suitable for both resistive and inductive heating load. Additional one relay is also provided for time or temperature dependent event outputs as per the system requirement. The programmed profile and other parameters are retained in the nonvolatile memory in the event of power failure.
To monitor the on line temperature profile of the heating system, serial communication port on either RS232 or RS 485 interface can be optionally provided, the same can be connected to the computer. Libratherm provides the window based software to program the controller and to view the on line behavior of the heating system in both graphical and tabular format.
- Accepts standard type of thermocouple, RTD, Voltage or Current signal.
- Control output of Relay / TRAIC / DC pulse / (4-20)mA / (0-5)Volt.
- Servo start from the current process temperature.
- 1 to 20 programmable ramp/soak steps.
- Retention of program in case of power failure.
- Automatic program resumption.
- Software password security lock for unauthorized tampering of the set and tune values.
- Heat Treatment
- Wax Burn out furnace used in jewelry making
- Environmental Chambers
- Furnace / oven control
- PWHT and SR heat treatment cycle