Libratherm Instruments Private Limited

PRC-8000-8 – 8 input and 8 zone Ramp/Soak Programmable PID Temperature Controller.
Description:

Libratherm offers 8 Zone Ramp/Soak PID Temperature Indicator/Controller (Model PRC-8000) for accurate temperature control of multiple zone gradual heating and cooling. PRC-8000 is ideally suitable and is most economical as it eliminates the need for a number of individual PID or ON/OFF Temperature Controllers required per zone. Each zone can be independently programmed for 16 steps of Ramp/Soak profile. Each loop parameter like PID, Hysteresis, Deviation Hold, Facility to skip unused channel, etc can be programmed from the user-friendly front panel membrane keyboard. The programmed profile and other parameters are retained in the non-volatile memory in the event of power failure.
This Multizone PID Controller PRC-8000 can accept 8 Thermocouples or RTD(Pt-100)3 wire inputs and can provide switching PID or ON/OFF Control output in the form of DC Pulses or SSR or relay to drive external load contactor drivers for heating and cooling. It can simultaneously provide 8 analog PID control outputs in the form of (4-20)mA or (0-5)volt, which can be used to control heater power through Thyristor power pack (for the 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 a single-phase/three-phase SCR phase angle fired power controller which is ideally suitable for both resistive and inductive heating load.
Key Features:

• Microprocessor based design.
• Eight zone – independent, uniform or average control.
• Highly accurate and sturdy in operation.
• Accuracy better than ± 0.1 % of the full scale.
• Accepts standard type of thermocouple or RTD(Pt-100)/2 or 3-wire input.
• Control output of Relay or TRAIC or DC pulse or (4-20)mA or (0-5)Volt or any other.
• Servo start from the process temperature.
• Deviation hold back facility (common or individual).
• Copying facility.
• Facility to use as PID and / or ON / Off controller.
• Hardware security locks for unauthorized tempering of the set values.
• 3 separate displays to display channel no, process temp. & Set temp. (Extra 6 digit display for real time clock – for PC/Printer interface).
• Models with 2, 4, 6 & 8 inputs are available.
• 1 to 16 Ramp / Soak steps individually programmable per zone.

Application:

• Heat Treatment
• Large ovens and furnace with multiple sensors
• Environmental Chambers
• Multi-zone Stress relieving furnace
• Pre and Post welding heat treatment
• Tunnel furnace
• Normalizing furnace

Ordering Information:

PRC-6000 – Six input/output and six independent 4 steps profile programmer cum temperature controller for SR/PWHT Cycle.Size : 96 x 96 x 160
PRC-6000-PNL – Ready to use panel with input/output connections for SR/PWHT Cycle.Size : 350 x 250 x 325

Description:Libratherm manufactures Six Zone Microcontroller based Multiple Ramp/Soak programmable PID/On-Off Temperature Controller cum Profile Programmer Model PRC-6000 which is designed to improve reliability, accuracy, and control of six independent heating zones. It features Ramp and Soak functions (the capability to control the temperature and its rate of change over a predetermined time span). A single and common pattern of 4 ramp/soak steps – (Fixed pattern of 1st pre-heating ramp, 2nd heating ramp, 3rd soaking, and 4th cooling ramp) for all six zones or each of the six-zone can be independently programmed and stored in the memory. This Multi-Channel PID Profile Controller PRC-6000 can also be used as single set point control when the ramp/soak profile control is not desired. PID SSR Programmer PRC-6000 accepts six K type thermocouples and provides outputs in the form of 6 relay contacts in PID or ON/OFF control mode. An extra relay contact is provided to indicate the thermocouple fault condition.
This PWHT Stress Relieving Controller PRC-6000 offers blue color graphical LCD screen to display the temperature of all six zones simultaneously on a single screen. The programmed and running ramp/soak profile can be easily monitored. The front panel keyboard allows programing of ramp/soak profile, PID values, deviation hold values, and viewing of various status parameters for all six zones under control. Through the keyboard, the user can operate each heating zone either in Auto mode or Manual mode in profile mode or in single set point control mode.
To monitor the online temperature profile of the heating system, RS 485 serial communication 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 online behavior of the heating cycle in both graphical and tabular format. Optionally, an extra RS485 port can be provided for Master/Slave programming with a single master and a maximum of 10 slaves.
Key Features:

• Accepts 6 K type (Cr/Al) thermocouple
• Blue colour graphical LCD screen for clear visibility
• Six independent control Relay and 1 fault Relay
• On line facility to change the Ramp rate and Soak temperature
• Servo start from the current process temperature
• 1 to 4 programmable ramp/soak steps
• Cascading of Controllers using Master/Slave facility
• °C/°F unit of measurement selectable through keyboard
• Programmable delayed start timer – 0.0 to 99.9 hours
• All six zones can be independently programmed for different ramp/soak patterns
• All six zones can be run independently at different times.
• All six zones can be run with a common ramp/soak profile with a built-in hold facility to control all the zones in synchronization.
• Deviation hold value can be programmed for each zone.
• PRC-6000 can be used as six independent controllers or a single six-channel controller.

Application:

• Furnace / Oven control
• PWHT and SR heat treatment cycle

Product Description:
PRC-8000-4 – 4 input and 4 zone Ramp / Soak Programmable PID Temperature Controller.


Description:
Libratherm offers 4 Zone Ramp/Soak PID Temperature Indicator/Controller (Model: PRC-8000) for accurate temperature control of multiple zone gradual heating and cooling. PRC-8000 is ideally suitable and is most economical as it eliminates the need for a number of individual PID or ON/OFF Temperature Controllers required per zone. Each zone can be independently programmed for 16 steps of Ramp/Soak profile. Each loop parameter like PID, Hysteresis, Deviation Hold, Facility to skip unused channel, etc can be programmed from the user-friendly front panel membrane keyboard. The programmed profile and other parameters are retained in the non-volatile memory in the event of power failure.
This Multizone Profile Controller PRC-8000 can accept 4 Thermocouples or RTD(Pt-100)3 wire inputs and can provide switching PID or ON/OFF Control output in the form of DC Pulses or SSR or relay to drive external load contactor drivers for heating and cooling. It can simultaneously provide 4 analog PID control outputs in the form of (4-20)mA or (0-5)volt, which can be used to control heater power through Thyristor power pack (for the 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 a single-phase/three-phase SCR phase angle fired power controller which is ideally suitable for both resistive and inductive heating load.

Key Features:

• Microprocessor based design.
• Eight zone – independent, uniform or average control.
• Highly accurate and sturdy in operation.
• Accuracy better than ± 0.1 % of the full scale.
• Accepts standard type of thermocouple or RTD(Pt-100)/2 or 3-wire input.
• Control output of Relay or TRAIC or DC pulse or (4-20)mA or (0-5)Volt or any other.
• Servo start from the process temperature.
• Deviation hold back facility (common or individual).
• Copying facility.
• Facility to use as PID and / or ON / Off controller.
• Hardware security locks for unauthorized tempering of the set values.
• 3 separate displays to display channel no, process temp. & Set temp. (Extra 6 digit display for real time clock – for PC/Printer interface).
• Models with 2, 4, 6 & 8 inputs are available.
• 1 to 16 Ramp / Soak steps individually programmable per zone.

Application:

• Heat Treatment
• Large ovens and furnace with multiple sensors
• Environmental Chambers
• Multi zone Stress relieving furnace
• Pre and Post welding heat treatment
• Tunnel furnace
• Normalizing furnace

Ordering Information:

PRC-8000-6 – 6 input and 6 zone Ramp / Soak Programmable PID Temperature Controller.


Description:Libratherm offers 6 Zone Ramp/Soak PID Temperature Indicator/Controller (Model PRC-8000) for accurate temperature control of multiple zone gradual heating and cooling. PRC-8000 is ideally suitable and is most economical as it eliminates the need for a number of individual PID or ON/OFF Temperature Controllers required per zone. Each zone can be independently programmed for 16 steps of Ramp/Soak profile. Each loop parameter like PID, Hysteresis, Deviation Hold, Facility to skip unused channel, etc can be programmed from the user-friendly front panel membrane keyboard. The programmed profile and other parameters are retained in the non-volatile memory in the event of power failure.
This Multizone Programmer PRC-8000 can accept 6 Thermocouples or RTD(Pt-100)3 wire inputs and can provide switching PID or ON/OFF Control output in the form of DC Pulses or SSR or relay to drive external load contactor drivers for heating and cooling. It can simultaneously provide 6 analog PID control outputs in the form of (4-20)mA or (0-5)volt, which can be used to control heater power through Thyristor power pack (for the 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 a single-phase/three-phase SCR phase angle fired power controller which is ideally suitable for both resistive and inductive heating load.

Key Features:

• Microprocessor based design.
• Eight zone – independent, uniform or average control.
• Highly accurate and sturdy in operation.
• Accuracy better than ± 0.1 % of the full scale.
• Accepts standard type of thermocouple or RTD(Pt-100)/2 or 3-wire input.
• Control output of Relay or TRAIC or DC pulse or (4-20)mA or (0-5)Volt or any other.
• Servo start from the process temperature.
• Deviation hold back facility (common or individual).
• Copying facility.
• Facility to use as PID and / or ON / Off controller.
• Hardware security locks for unauthorized tempering of the set values.
• 3 separate displays to display channel no, process temp. & Set temp. (Extra 6 digit display for real time clock – for PC/Printer interface).
• Models with 2, 4, 6 & 8 inputs are available.
• 1 to 16 Ramp / Soak steps individually programmable per zone.

Application:

• Heat Treatment
• Large ovens and furnace with multiple sensors
• Environmental Chambers
• Multi-zone Stress relieving furnace
• Pre and Post welding heat treatment
• Tunnel furnace
• Normalizing furnace

Ordering Information:

Model Wise Description:

Description:
Libratherm offers Microprocessor based Eight Zone PID Temperature indicator / Controller (Model PRC-8000) for accurate temperature control of multiple zone Gradual Heating and Cooling is required. PRC 8000 is ideally suitable and is most economical as it eliminates the need for number of individual PID or ON/OFF Temperature Controllers required per zone. Each zone can be independently programmed for 16 steps of Ramp/Soak profile. Each loop parameters like PID, Hysteresis, Deviation Hold, Facility to skip unused channel etc… can be programmed from the user-friendly front panel membrane keyboard. The programmed profile and other parameters are retained in the non-volatile memory in the event of power failure.

PRC 8000 can accept 8 Thermocouples or RTD(Pt-100)3 wire inputs and can provide switching PID or ON/OFF Control output in the form of DC Pulses or SSR or relay to drive external load contactor drivers for heating and cooling. It can simultaneously provide 8 analog PID control outputs in the form of (4-20)mA or (0-5)volt, 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

With the facility of copying Ramp/Soak profiles parameters of the single zone temperature controller to the all other available zones. Based on eight zone temperature controller is programed for Temperature Controller.

Features:

• Microprocessor based design.
• Eight zone - independent, uniform or average control
• Highly accurate and sturdy in operation.
• Accuracy better than ± 0.1 % of the full scale.
• Accepts standard type of thermocouple or RTD(Pt-100)/2 or 3-wire input.
• Control output of Relay or TRAIC or DC pulse or (4-20)mA or (0-5)Volt or any other.
• Servo start from the process temperature
• Deviation hold back facility (common or individual)
• Copying facility
• Facility to use as PID and / or ON / Off controller
• Hardware security locks for unauthorized tempering of the set values.
• 3 separate displays to display channel no, process temp. & Set temp.
• (Extra 6 digit display for real time clock – for PC/Printer interface)
• Models with 2, 4, 6 & 8 inputs are available.
• 1 to 16 Ramp / Soak steps individually programmable per zone.

Application:

• Heat Treatment
• Large ovens and furnace with multiple sensors
• Environmental Chambers
• Multi zone Stress relieving furnace
• Pre and Post welding heat treatment
• Tunnel furnace
• Normalizing furnace