Libratherm Instruments Private Limited
Libratherm Instruments Private Limited
Dahisar East, Mumbai, Maharashtra
GST No. 27AABCL1732A1Z5
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Ramp Soak Programmable PID Temperature Controller

Our range of Single Zone and 2 to 8 Zone Ramp/Soak Programmable PID Temperature Controller includes different products of specifications as per clients requirement.

Programmable Ramp Soak PID Temperature Controller

Programmable Ramp Soak PID Temperature Controller
  • Programmable Ramp Soak PID Temperature Controller
  • Programmable Ramp Soak PID Temperature Controller
  • Programmable Ramp Soak PID Temperature Controller
  • Programmable Ramp Soak PID Temperature Controller
  • Programmable Ramp Soak PID Temperature Controller
  • Programmable Ramp Soak PID Temperature Controller
  • Programmable Ramp Soak PID Temperature Controller
  • Programmable Ramp Soak PID Temperature Controller
  • Programmable Ramp Soak PID Temperature Controller
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Approx. Price: Rs 7,500 / PieceGet Latest Price
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Product Details:

Minimum Order Quantity1 Piece
Model No.PRC-480
Size48 x 48 mm
Control TypePID/On-Off
Input TypeThermocouple, RTD, Current (mA), Voltage (mV)
Control output TypeSSR, Analog (mA/mV)
BrandLibratherm
Power24 V DC, 240 V AC
Voltage110-230 VAC
Frequency50/60 Hz
Country of OriginMade in India
Panel Cutout or Terminals45 x 45 mm. +/- 0.5 mm. - 16 back panel terminals
Input FixedAny one factory set input as per users requirement as per the input selection table given below.
EnclosureABS plastic with polycarbonate front graphic.
NoteDue to continuous improvement - the specifications are subject to change without notice.
RangeFull +ve range of the selected input (please refer to the range selection table)
Resolution1 oC for thermocouples and 0.1oC for Pt-100 For mA input
Indicating Accuracy+/- 1 oC for Thermocouple throughout the range and +/- 0.1oC for Pt-100 for (4-20)mA
Display4 digit 0.25Inch Red 7-segment display for PV. 4 digit 0.25Inch Green 7-segment display for SV
Output IndicationFront Panel LED indications for SSR output. % Control Output and for Alarm status.
Input UniversalJ,K, R,S,B type thermocouple, RTD(Pt-100)/3 wire, 4-20mA
SettingsUsing front panel feather touch (tactile) key board to set various parameters.
Ramp or Soak Steps1 to 20 Steps. (no restrictions in programming - a ramp can be followed by a ramp and a soak
Set TemperatureProgrammable for each steps in the full range of the specified input
Time per Step1 to 540 mins. (9 Hr. per step) or 1 to 99:59 hour min. (To be specified in ordering info.)
Program Hold FacilityManual Hold or Auto Hold (Hold back feature for guaranteed Ramp/Soak facility)
Alarm OutputRelay Output with programmable hysteresis- can be used as High or Low Alarms.
Serial Communication OptionalOptically isolated 2 wire RS485 on Modbus RTU protocol. (in Slave mode with programmable slave ID)

Model Wise Description:
ModelDescriptionSize (mm.)
PRC-480Single input, Single profile of 20 steps Ramp / Soak Programmable PID Temperature Controller48 x 48 x 110
Description:

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.

Features:
  • 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.

Applications:
  • Heat Treatment
  • Wax Burn out furnace used in jewelry making
  • Environmental Chambers
  • Furnace / oven control
  • PWHT and SR heat treatment cycle
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Additional Information:

  • Item Code: PRC-480
  • Pay Mode Terms: T/T (Bank Transfer)
  • Port of Dispatch: Mumbai
Yes! I am interested

PWHT Or Stress Relieving Temperature Controller

PWHT Or Stress Relieving Temperature Controller
  • PWHT Or Stress Relieving Temperature Controller
  • PWHT Or Stress Relieving Temperature Controller
  • PWHT Or Stress Relieving Temperature Controller
  • PWHT Or Stress Relieving Temperature Controller
  • PWHT Or Stress Relieving Temperature Controller
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Approx. Price: Rs 8,500 / PieceGet Latest Price
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Product Details:

Model No.PRC-489
Size48 x 96 mm
Control TypePID/On-Off
Input TypeThermocouple
Control output TypeRelay/SSR
BrandLibratherm
EnclosureABS plastic with polycarbonate front graphic.
Display Type4 Digit/7 Segment
Voltage90 to 250 VAC
Frequency50/60 Hz
Alarm OutputRelay Output with programmable hysteresis- can be used as High or Low Alarms or End of Profile relay
Range0 to 1200 Deg C OR Full +ve range of the selected input
Control OutputDC pulse to drive external SSR b) Triac(AC switch) 2A @ 250VAC to drive external relay or contactor
Output IndicationFront Panel LED indications for SSR output. % Control Output and for Alarm status and status of heat
Control AlgorithmPID or ON/OFF selectable (when specified for switching output).
TuningManual tuning of PID values.
Input FixedCr/Al- K type thermocouple (Or as per table given below)
Indicating Accuracy+/- 1 Deg C for Thermocouple throughout the range
Display4 digit 0.25 Inch Red 7-segment display for PV. 4 digit 0.25 Inch Green 7-segment display for SV
SettingsUsing front panel feather touch (tactile) key board to set various parameters.
Open sensor indicationOPEn flashes on the display and control action is turned off - or control can be transferred
Ramp or Soak Steps1 to 16 Steps
Ramp rate Pr1 Deg C/hour to 1200 Deg C/hour (for K type t/c)
Master or SlaveUser programmable as Master or Slave for multi-zone control
Soak Temperature PLProgrammable for each steps in the full range of the specified input
Soaking Time Pd1 minute to 99Hour.59Min.
Program Hold Facility dHLdManual Hold or Auto Hold (Hold back feature for guaranteed Ramp/Soak facility).
Serial Communication OptionalOptically isolated 2 wire RS485 -Modbus RTU protocol - for both master controller and slave control
Panel Cutout45 x 92 mm. +/- 0.5 mm.
NoteDue to continuous improvement - the specifications are subject to change without notice.
Resolution1 Deg C/1 Deg F for thermocouple input

Model Wise Description:
ModelDescriptionSize w x h x d (mm.)
PRC-489Single input, Single profile of 16 steps Ramp / Soak Programmable PID/On-Off Temperature Controller48 x 96 x 110

Description:

Libratherm offers Microcontroller based multiple Ramp / Soak programmable PID temperature controller Model PRC-489 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 pattern of total 16 (ramp/soak) steps can be programmed and stored in the memory. It can also be used as single set point control when the ramp/soak profile control is not desired. The controllers are caIibrated for K type thermocouple.

PRC-489 offers both switching outputs in the form of SSR driver/Triac (AC SSR) for external SSR or external load contactor and analog output in the form of (4-20) mA or (0-5) volt control signal, which can be used to control heater power through external Thyristor power regulator. The analog outputs can be directly connected to Libratherm make single phase / three phase SCR based phase angle or zero cross over fired power regulators.

Additional one/two relays are 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. In case of thermocouple break, the control can be transferred to manual mode to continue the heating cycle and user can alter the % of control output. The deviation hold feature assures guaranteed ramp. For quick heating from ambient temperature the hold feature is disabled in the very 1st ramp. Front Panel LED indicates start and end of the cycle, the status of heater output, status of heating ramp, soaking or cooling ramp. The unit of temperature measurement can also be selected as oC or oF as desired.

To monitor the on line 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 on line behavior of the heating cycle in both graphical and tabular format. The same RS485 interface is used for Master/Slave programming as shown below.

Features:
  • 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 16 programmable ramp/soak steps with rate programming facility.
  • Master / Slave concept with 1 master and max. 30 slaves.
  • Each controller can be configured as master or slave with 1 master and many slaves.
  • Can be used as single set point control with online set point change facility.

Applications:
  • Furnace / oven control
  • PWHT and SR heat treatment cycle
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Callback


Additional Information:

  • Item Code: PRC-489-TC
  • Port of Dispatch: Mumbai
Yes! I am interested

Ramp / Soak Programmable PID Temperature Controller

Ramp / Soak Programmable PID Temperature Controller
  • Ramp / Soak Programmable PID Temperature Controller
  • Ramp / Soak Programmable PID Temperature Controller
  • Ramp / Soak Programmable PID Temperature Controller
  • Ramp / Soak Programmable PID Temperature Controller
  • Ramp / Soak Programmable PID Temperature Controller
  • Ramp / Soak Programmable PID Temperature Controller
  • Ramp / Soak Programmable PID Temperature Controller
  • Ramp / Soak Programmable PID Temperature Controller
  • Ramp / Soak Programmable PID Temperature Controller
Get Best Quote
Approx. Price: Rs 9,500 / PieceGet Latest Price
Product Brochure

Product Details:

Minimum Order Quantity1 Piece
Model No.PRC-300
Size96 x 96 mm
Control TypePID/On-Off
Input TypeThermocouple, RTD, Current (mA), Voltage (mV)
Control output TypeSSR, Analog (mA/mV)
BrandLibratherm
TypeDigital
Display Type4 Digit/7 Segment
Voltage110-230 VAC
Frequency50/60 Hz
Country of OriginMade in India
DesignMicrocontroller based with 12 bit ADC and dual 12 bit DAC
Power Limit PLPower Limit to restrict the analog control output = 1 to 100 %.
Control OutputsDC pulses to drive external SSR,(4-20)mA,RL max = 300 Ohms. Or (0-5)VDC,RL min = 10K ohms.
Ramp or Soak Steps1 to 16 Steps. (No restrictions in programming - a ramp can be followed by a ramp and a soak can be
Set TemperatureProgrammable for each steps in the full range of the specified input. In single set point or profile
Time per each Ramp or Soak Step1 to 999 mins. (16 Hrs. per step) Or 1 minute to 100 hours
Run from desired step number rFSnThis rFSn facility allows user to skip the ramp/soak steps and run the profile from the desired step
Program Hold FacilityManual Hold or Auto Hold (Hold back feature for guaranteed Ramp/Soak facility) dHLd= 1 to 50 oC.
Front Panel LEDsTo display the status of control output,Alarms and Ramp/Soak status
Memory BackupRetention of PID and set values in the non-volatile memory in the event of power failure
Alarm OutputsHigh or Low or End of Profile Alarm Relays (OUT2 and OUT3) (contacts rated for 5A @ 230VAC).
InputThermocouple type J,K,R,S,B,or RTD(Pt-100)/2 or 3-wire,4-20mA/0-10V from Infrared pyrometer
Serial Communication Optional FeatureOptically isolated 2 wire RS485 interface on Modbus RTU protocol
Panel cut out92 x 92 mm +/- 0.5 mm
EnclosureABS plastic enclosure with ABS bazzel and polycarbonate front.
RangeSubject to the full range of the specified input.
Resolution0.1 / 1 Degree C Subject to the specified input type and range.
Indicating AccuracyBetter than +/- 0.1% of the range ( by software linearization of curves)
TuningAuto / Manual tuning of PID values.
Control AlgorithmPID mode for heating control,On/Off mode with programmable hysteresis.
Soft Start RTBuilt in power on soft start (rt) for analog output = 1 to 99 seconds

Model Wise Descriptions:
ModelProduct Description
PRC-300Ramp / Soak Programmable PID Temperature Controller – Single profile of 16 steps (Basic Model)
Description:
Libratherm offers Microcontroller based multiple Ramp / Soak programmable PID temperature controller Models PRC-300, PRC-967 and PRC-309, which are designed to improve reliability, accuracy and control for all processing applications. It features Ramp and Soak functions (the capability to control the temperature and its rate of change over a predetermined time span). PRC-300 and PRC-967 offers single profile of 16 steps and PRC-309 offers one to ten different patterns each of 16 (ramp/soak) steps, which can be programmed into the memory with the user-friendly membrane keyboard. Separate displays are provided to monitor simultaneously; the Process temperature, Set temperature and the Program number. They can also be used as single set point control when the profile control is not desired. They accepts user selectable standard temperature sensors like K, R, S and B type thermocouples, or RTD(Pt-100) or 4-20mA/0-10VDC from infrared pyrometers or 0 to 1200mV from oxygen probe.

The controllers offers both switching outputs in the form of SSR driver or Triac to drive external single or three phase Solid state relays or load contactors and linear analog control outputs in the form of (4-20)mA or (0-5)volt or (0-10)VDC, which can be used to control heater power through Thyristor power regulators (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 based phase angle fired power controllers, which are ideally suitable for both resistive and inductive heating load. Additional 4 relays are 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 flash 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 also be optionally provided, the same can be connected to the computer. Libratherm provides standard window based software to view the on line behavior of the heating system in both graphical and tabular format. The controllers can also be operated and programmed through PC.

Features:
  • Accepts thermocouple, RTD(Pt-100), Infrared pyrometer
  • Both switching and linear PID control outputs.
  • Servo start from the process temperature.
  • User programmable 1-10 different patterns of ramp/soak steps.
  • Retention and auto-execution of program in case of power failure.
  • Facility to use as PID and ON / OFF controller.
  • Interface to computer with window based software

Applications:
  • Heat Treatment
  • Investment casting
  • Environmental Chambers
  • Laboratory and Industrial Furnace / Oven control
  • Laboratory and Industrial high temperature furnace control
Request
Callback


Additional Information:

  • Item Code: PRC-300
  • Pay Mode Terms: T/T (Bank Transfer)
  • Port of Dispatch: Mumbai
Yes! I am interested

Ramp Soak Programmable PID Temperature Controller

Ramp Soak Programmable PID Temperature Controller
  • Ramp Soak Programmable PID Temperature Controller
  • Ramp Soak Programmable PID Temperature Controller
  • Ramp Soak Programmable PID Temperature Controller
  • Ramp Soak Programmable PID Temperature Controller
  • Ramp Soak Programmable PID Temperature Controller
  • Ramp Soak Programmable PID Temperature Controller
  • Ramp Soak Programmable PID Temperature Controller
  • Ramp Soak Programmable PID Temperature Controller
Get Best Quote
Approx. Price: Rs 10,500 / PieceGet Latest Price
Product Brochure

Product Details:

Minimum Order Quantity1 Piece
Model No.PRC-967
Size96 x 96 mm
Control TypePID/On-Off
Input TypeThermocouple, RTD, Current (mA), Voltage (mV)
Control output TypeSSR, Analog (mA/mV)
BrandLibratherm
Display Type4 Digit/7 Segment
Voltage110-230 VAC
Frequency50/60 Hz
Country of OriginMade in India
Alarm OutputsHigh or Low or End of Profile Alarm Relays (OUT2 and OUT3) (contacts rated for 5A @ 230VAC).
Serial Communication Optional FeatureOptically isolated 2 wire RS485 interface on Modbus RTU protocol
InputThermocouple type J,K,R,S,B,or RTD(Pt-100)/2 or 3-wire,4-20mA/0-10V from Infrared pyrometer
Panel cut out92 x 92 mm +/- 0.5 mm
EnclosureABS plastic enclosure with ABS bazzel and polycarbonate front.
RangeSubject to the full range of the specified input.
Resolution0.1 / 1oC Subject to the specified input type and range.
Indicating AccuracyBetter than +/- 0.1% of the range ( by software linearization of curves)
Control OutputsDC pulses to drive external SSR,(4-20)mA,RL max = 300 Ohms. Or (0-5)VDC,RL min = 10K ohms.
Soft Start RTBuilt in power on soft start (rt) for analog output = 1 to 99 seconds
Power Limit PLPower Limit to restrict the analog control output = 1 to 100 %.
Ramp or Soak Steps1 to 16 Steps. (No restrictions in programming - a ramp can be followed by a ramp and a soak can be
Set TemperatureProgrammable for each steps in the full range of the specified input
Time per each Ramp or Soak Step1 to 999 mins. (16 Hrs. per step) Or 1 minute to 100 hours
Run from desired step number rFSnThis rFSn facility allows user to skip the ramp/soak steps and run the profile from the desired step
Program Hold FacilityManual Hold or Auto Hold (Hold back feature for guaranteed Ramp/Soak facility) dHLd= 1 to 50 oC.
Front Panel LEDsTo display the status of control output,Alarms and Ramp/Soak status
Memory BackupRetention of PID and Set values in the built in non-volatile memory - in case of power failure
DesignMicrocontroller based with 12 bit ADC and dual 12 bit DAC

Model Wise Descriptions:
ModelProduct Description
PRC-967Ramp / Soak Programmable PID Temperature Controller (Bigger display) – Single profile of 16 steps


Description
:
Libratherm offers Microcontroller based multiple Ramp / Soak programmable PID temperature controller Model PRC-967 which are designed to improve reliability, accuracy and control for all processing applications. It features Ramp and Soak functions (the capability to control the temperature and its rate of change over a predetermined time span). PRC-300 and PRC-967 offers single profile of 16 steps and PRC-309 offers one to ten different patterns each of 16 (ramp/soak) steps, which can be programmed into the memory with the user-friendly membrane keyboard. Separate displays are provided to monitor simultaneously; the Process temperature, Set temperature and the Program number. They can also be used as single set point control when the profile control is not desired. They accepts user selectable standard temperature sensors like K, R, S and B type thermocouples, or RTD(Pt-100) or 4-20mA/0-10VDC from infrared pyrometers or 0 to 1200mV from oxygen probe.

The controllers offers both switching outputs in the form of SSR driver or Triac to drive external single or three phase Solid state relays or load contactors and linear analog control outputs in the form of (4-20)mA or (0-5)volt or (0-10)VDC, which can be used to control heater power through Thyristor power regulators (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 based phase angle fired power controllers, which are ideally suitable for both resistive and inductive heating load. Additional 4 relays are 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 flash 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 also be optionally provided, the same can be connected to the computer. Libratherm provides standard window based software to view the on line behavior of the heating system in both graphical and tabular format. The controllers can also be operated and programmed through PC.

Features:
  • Accepts thermocouple, RTD(Pt-100), Infrared pyrometer
  • Both switching and linear PID control outputs.
  • Servo start from the process temperature.
  • User programmable 1-10 different patterns of ramp/soak steps.
  • Retention and auto-execution of program in case of power failure.
  • Facility to use as PID and ON / OFF controller.
  • Interface to computer with window based software

Applications:
  • Heat Treatment
  • Investment casting
  • Environmental Chambers
  • Laboratory and Industrial Furnace / Oven control
  • Laboratory and Industrial high temperature furnace control
Request
Callback


Additional Information:

  • Item Code: PRC-967
  • Pay Mode Terms: T/T (Bank Transfer)
  • Port of Dispatch: Mumbai
Yes! I am interested

Programmable PID Temperature Controller

Programmable PID Temperature Controller
  • Programmable PID Temperature Controller
  • Programmable PID Temperature Controller
  • Programmable PID Temperature Controller
  • Programmable PID Temperature Controller
  • Programmable PID Temperature Controller
Get Best Quote
Approx. Price: Rs 25,000 / PieceGet Latest Price
Product Brochure

Product Details:

Minimum Order Quantity1 Piece
Model No.PRC-309
Size96 x 96 mm
Control TypePID/On-Off
Input TypeThermocouple, RTD, Current (mA), Voltage (mV)
Control output TypeSSR, Analog (mA/mV)
BrandLibratherm
Accuracy+/- 1%
Resolution0.1/1 Deg C Subject to the specified input and range
Display Type4 Digit/7 Segment
Voltage110-230 VAC
Frequency50/60 Hz
EnclosureMetal Powder coated
Digit Display SizeSingle Display
TypeAutomatic

Ramp / Soak programmable PID temperature controller with 10 patterns and 16 steps are most commonly used for medium and high temperature control applications.

Features:
  • Design: Microcontroller based 8 bit with 12 bit ADC and 12 bit DAC.
  • Control Output: DC pulses to drive external SSR, Built-in Triac (5A @ 230VAC) or (4-20)mA or (0-5)VDC output with soft start and power limit.
  • Alarm Output: High or Low or Event Alarm Relay (5A @ 230VAC).
  • 10 indpendent profile of 16 ramp/soak steps each.
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Callback
Yes! I am interested

Ramp Soak PID Temperature Controller

Ramp Soak PID Temperature Controller
  • Ramp Soak PID Temperature Controller
  • Ramp Soak PID Temperature Controller
  • Ramp Soak PID Temperature Controller
  • Ramp Soak PID Temperature Controller
  • Ramp Soak PID Temperature Controller
  • Ramp Soak PID Temperature Controller
  • Ramp Soak PID Temperature Controller
  • Ramp Soak PID Temperature Controller
Get Best Quote
Approx. Price: Rs 15,000 / PieceGet Latest Price
Product Brochure

Product Details:

Model No.PRC-300
Size96 x 96 mm
Control TypePID/On-Off
Input TypeThermocouple, RTD
Control output TypeSSR, Analog (mA/mV)
BrandLibratherm
Display Type4 Digit/7 Segment
Auto-tuningAuto-tuning and manual tuning available
DesignMicrocontroller based with 12 bit ADC and dual 12 bit DAC

Model : PRC-300
Ramp / Soak Programmable PID Temperature Controller – Single profile of 16 steps (Basic Model)

Libratherm offers Microcontroller based multiple Ramp / Soak programmable PID temperature controller Models PRC-300, PRC-967 and PRC-309, which are designed to improve reliability, accuracy and control for all processing applications. It features Ramp and Soak functions (the capability to control the temperature and its rate of change over a predetermined time span). PRC-300 and PRC-967 offer single profile of 16 steps and PRC-309 offer one to ten different patterns each of 16 (ramp/soak) steps, which can be programmed into the memory with the user-friendly membrane keyboard. Separate displays are provided to monitor simultaneously; the Process temperature, Set temperature and the Program number. They can also be used as single set point control when the profile control is not desired. They accept users selectable standard temperatures sensors like K, R, S and B-type thermocouples, or RTD(Pt-100) or 4-20mA/0-10VDC from infrared pyrometers or 0 to 1200mV from oxygen probe.

The controllers offers both switching outputs in the form of SSR driver or Triac to drive external single or three phase Solid state relays or load contactors and linear analog control outputs in the form of (4-20)mA or (0-5)volt or (0-10)VDC, which can be used to control heater power through Thyristor power regulators (for electrical heating system) or to control the position of a modulating motor valve (for oil or gas fired heating systems). The analogue outputs can be directly connected to Libratherm make single phase / three phase SCR based phase angle fired power controllers, which are ideally suitable for both resistive and inductive heating load. Additional 4 relays are also provided for time or temperature dependent event outputs as per the system requirement. The programme profile and other parameters are retained in the nonvolatile flash memory in the event of power failure.
To monitor the online temperature profile of the heating system, serial communication port on either RS232 or RS 485 interface can also be optionally provided, the same can be connected to the computer. Libratherm provides standard window-based software to view the online behaviour of the heating system in both graphical and tabular format. The controllers can also be operated and programmed through PC.

Features:
  • Accepts Thermocouple, RTD(Pt-100), Infrared pyrometer
  • Both switching and linear PID control outputs.
  • Servo starts from the process temperature.
  • User programmable 1-10 different patterns of ramp/soak steps.
  • Retention and auto-execution of the program in case of power failure.
  • Facility to use as PID and ON / OFF controller.
  • Interface to computer with window based software
Request
Callback
Yes! I am interested

Profile Temperature Controller

Profile Temperature Controller
  • Profile Temperature Controller
  • Profile Temperature Controller
  • Profile Temperature Controller
  • Profile Temperature Controller
  • Profile Temperature Controller
  • Profile Temperature Controller
  • Profile Temperature Controller
Get Best Quote
Approx. Price: Rs 20,500 / PieceGet Latest Price
Product Brochure

Product Details:

Minimum Order Quantity1 Piece
Model No.PRC-312
Control TypePID/On-Off
Input TypeThermocouple
Control output TypeSSR, Analog (mA/mV)
UsageIndustrial Use
BrandLibratherm
Display Type4 Digit/7 Segment
Voltage110-230 VAC
Frequency50/60 Hz
Usage/ApplicationWax Burnout Furnace Control
Temperature Range0 to 1200 Degree C
Set PointProgrammable throughout the range. In single set point control mode,the set point can be changed.
Country of OriginMade in India
Ramp or Soak Steps1 to 16 Steps. (No restrictions in programming - a ramp can be followed by a ramp and a soak can be
Auto or Manual ControlAuto to Manual bump less transfer of control output - to manually change the percentage of heating.
Relay OutputsHigh or Low Alarm relay. End of Profile Relay (contacts rated for 5A @ 230VAC).
Memory BackupRetention of PID and set values in the non-volatile memory in the event of power failure.
Resolution1oC Subject to the specified input and range.
Run from desired step facility rFSnThis facility allows user to skip the ramp/soak steps and run the profile from the desired step
Serial Communication OptionalRS485 on Modbus RTU protocol (in Slave mode). Standard window based PC software available at extra
Set TemperatureProgrammable for each steps in the full range of the specified input
Supply115VAC or 240 VAC +/- 10% ( approx. 5VA),50/60Hz.
Time per Step1 to 540 minutes per step (max. 9 hours per step)
Control AlgorithmPID with pulse width modulation / time proportional On/Off mode with programmable hysteresis. (OUT1)
Control Outputs12 V DC pulse to drive external single phase or 3 phase SSR
Control modeSingle set point or Ramp/Soak profile mode - user selectable
Delayed StartInternal timer to start the burn out cycle after the time delay 0.0 to 99.0 Hour (increment @ 0.5 H
Indicating AccuracyBetter than +/-0.1% of the range ( by software linearization of curves)
Input sensorK type (Cr/Al) thermocouple

Model Wise Descriptions:
ModelProduct Description
PRC-312Programmable Ramp/Soak PID and On-Off temperature controller with 10 profiles each of 16 ramp/soak steps with multiple display

Features:
  • Designed using high speed microcontroller
  • Software linearization for +/-1oC indicating accuracy
  • Time delay function to automatically start the heating cycle after desired time
  • Sixteen ramp/soak steps – to control burnout heating cycle
  • User programmable Single or 10 different ramp/soak patterns
  • Front panel LED/Display indications to monitor online behaviour of the heating cycle
  • PID control action ensures +/-1oC control accuracy
  • Time tested and field proven control algorithm
  • Retention of program in the flash memory
  • Auto restart of heating cycle on power resumption
  • High or Low temperature alarm relay
  • End of heating cycle relay

Description:
Libratherm offers Microcontroller based multiple Ramp / Soak programmable PID temperature controllers which are designed to improve reliability, accuracy and control for wax burnout cycles. They all features Ramp and Soak functions (the capability to control the temperature and its rate of change over a predetermined time span). One to ten different patterns each of total sixteen (ramp/soak) steps can be programmed into the memory with the user-friendly membrane keyboard. Separate displays are provided to monitor simultaneously the Process temperature, Set temperature, Program number, step number, safety temperature and remaining time. Servo start and auto tracking facilities are additional useful features available in these models. Multiple display allows user to view the program status in one glance, without having to press multiple keys. The front panel LED graph shows the status of current step in progress, whether heating ramp, cooling ramp or soaking step. Controllers can also be used as single set point control when the profile control is not desired.
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Additional Information:

  • Item Code: PRC-312
  • Port of Dispatch: Mumbai
  • Production Capacity: 100 per month
  • Delivery Time: 7 days
  • Packaging Details: corrugated paper box
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Programmable Temperature Controller

Programmable Temperature Controller
  • Programmable Temperature Controller
  • Programmable Temperature Controller
  • Programmable Temperature Controller
  • Programmable Temperature Controller
  • Programmable Temperature Controller
  • Programmable Temperature Controller
  • Programmable Temperature Controller
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Approx. Price: Rs 17,500 / PieceGet Latest Price
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Product Details:

Minimum Order Quantity1 Piece
Model No.PRC-312
Size96 x 96 mm
Control TypePID/On-Off
Input TypeThermocouple, RTD, Current (mA), Voltage (mV)
Control output TypeRelay, Analog (mA/mV)
BrandLibratherm
Voltage90-270 VAC/DC

Programmable Ramp Soak PID Temperature Controllers.

Features:

  • Accepts standard type of thermocouple, RTD, Voltage or Current signal.
  • Servo starts from the current process temperature.
  • User programmable 10 different ramp/soak patterns in PRC-969 series.
  • Retention of the program in case of power failure.
  • Automatic program resumption.
  • Software password security lock for unauthorised tampering of the set and tune values.

Applications:

  • Heat Treatment
  • Investment casting
  • Environmental Chambers
  • Laboratory and Industrial Furnace / Oven control
  • Laboratory and Industrial high temperature furnace control
DesignMicrocontroller based design with 12 bit ADC and 12 bit DAC.
InputThermocouple type K (R, S, B type thermocouple or Pt-100 can also be offered against requirement)
Range0 to 1200 °C for K type thermocouple
Resolution1 °C Subject to the specified input and range.
Indicating AccuracyBetter than ± 0.1% of the range ( by software linearization of curves).
Display4 digit 0.5” for Process value, 4 digit 0.5” for set value.
2 digit 0.3” for current Program number, 2 digit 0.3” for step number.
4 digit 0.3” for safety temperature and 4 digit 0.3” for the remaining time of the current step.
TuningManual tuning of PID and Hysterisis values.
Control AlgorithmTime proportional switching PID mode.
Linear PID mode.
On/Off mode with programmable hysteresis. (OUT1).
PID valuesProportional Band (P)= 0.0 to 100.0% of Span,
Integral value (I)= 0.00 to 5.00 resets/minute,
Derivative value (D) = 0.00 to 5.00 minutes,
Cycle Time (CYC)= 2 to 100 seconds,
On/Off Hysterisis (HYSt)= 0 to 10°C (When Prb = 0),
Control modeSingle Set Point or Ramp/Soak Profile control – user selectable.
Delayed StartInternal timer to autostart the heating cycle after the time delay elapses.
0.0 to 99.0 Hour (increment @ 0.5 Hr or 30 minutes).
Set PointProgrammable throughout the range. In single set point control mode, the set point can be changed on line.
Control Outputs10V DC pulse to drive external SSR OR 4-20mA/0-5V/0-10V – to control through Libratherm Thyristor.
Ramp/Soak Steps1 to 16 Steps. (No restrictions in programming – a ramp can be followed by a ramp and a soak can be followed by a soak).
Time per Step1 to 540 minutes per step (max. 9 hours per step).
Number of Profiles1 to 10 profiles each of 16 ramp/soak steps can be programmed.
Run from desired step facility (rFSn)This rFSn facility allows users to skip the ramp/soak steps and run the profile from the desired step number.
With servo start facility (to start the step from the current furnace temperature).
Memory BackupRetention of PID and set values in the non-volatile memory in the event of power failure.
Auto start from the last setpoint on the resumption of power.
No need to restart the program.
Alarm OutputsConfigurable Alarms for High or Low or Deviation.
End of Profile Alarm Relay (contacts rated for 5A @ 230VAC).
Serial Communication (Optional)RS485 on Modbus RTU protocol (in Slave mode). Standard Windows-based PC software is available at extra cost.
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Additional Information:

  • Item Code: PRC-309
  • Pay Mode Terms: T/T (Bank Transfer)
  • Port of Dispatch: Mumbai
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Kamlesh Panchal (Managing Director)
Libratherm Instruments Private Limited
No. 401-403, Diamond Industrial Estate, Ketki Pada Road
Dahisar East, Mumbai - 400068, Maharashtra, India


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