Libratherm Instruments Private Limited
Libratherm Instruments Private Limited
Dahisar East, Mumbai, Maharashtra
GST No. 27AABCL1732A1Z5
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Temperature Controllers

Temperature Controllers
  • Ramp/Soak Temperature Controllers
  • Multi Zone Ramp/Soak Controllers
  • PID Temperature Controllers
  • On-Off Temperature Controllers

Ramp Soak PID Temperature Controller PRC-967

Ramp Soak PID Temperature Controller PRC-967
  • Ramp Soak PID Temperature Controller PRC-967
  • Ramp Soak PID Temperature Controller PRC-967
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Approx. Price: Rs 11,025 / NumberGet Latest Price

Product Details:

BrandLibratherm
Model No.PRC-967 (Part No.: 1703-2)
Size96 x 96 mm
Control TypePID/On-Off
Input TypeThermocouple, RTD
Control output TypeRelay/SSR
Country of OriginMade in India

PRC-967 – Ramp/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 is 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). This PID Programme Controller PRC-967 offers a single profile of 16 steps that 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 user-selectable standard temperature sensors like K, R, S, and B type thermocouples.

The Profile Controller 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 an 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 online temperature profile of the heating system, a serial communication port on the RS485 interface can also be optionally provided, the same can be connected to the computer.
Libratherm offers Microsoft Window-based Software to view the online behavior of the heating system in both graphical and tabular format on the computer screen.

Key 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.

Application:
  • Heat Treatment Cycle (Tempering, Hardening, Annealing) control
  • Investment casting
  • Laboratory / Industrial High Temperature Furnace Control
  • Laboratory Low Temperature Oven Control

Ordering Information:

Sr. No.SpecificationsPart No.
1Input from R, S, B t/c with (SSR + 0-5V or (4-20)mA) control output + High or Low and End of Profile Relay outputs.
For High Temperature Furnace control (up to 1700 °C).
1703-1
2Input from K t/c with only SSR control output + High or Low and End of Profile Relay outputs.
For Medium Temperature furnace control (up to 1200 °C).
1703-2
3Input from K t/c with (SSR + 0-5V or (4-20)mA) control output + High or Low and End of Profile Relay outputs.
For Medium Temperature furnace control (up to 1200 °C).
1703-3
4Input from RTD(Pt-100) with (SSR + 0-5V or (4-20)mA) control output + High or Low and End of Profile Relay outputs.
For low temperature ovens (up to 400 °C)
1703-4
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Master Slave Ramp Soak PID Temperature Controller PRC-489

Master Slave Ramp Soak PID Temperature Controller PRC-489
  • Master Slave Ramp Soak PID Temperature Controller PRC-489
  • Master Slave Ramp Soak PID Temperature Controller PRC-489
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Approx. Price: Rs 8,925 / NumberGet Latest Price

Product Details:

BrandLibratherm
Model No.PRC-489 (Part No.: 1706-1)
Size48 x 96 mm
Control TypePID/On-Off
Input TypeThermocouple, RTD
Control output TypeRelay/SSR
Country of OriginMade in India

PRC-489 – Single input, Single profile of 16 steps Ramp / Soak Programmable PID/On-Off Temperature Controller.
Description:
Libratherm offers Microcontroller-based 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). The single pattern of a total of 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 calibrated for K type thermocouple.
Control Outputs: This PID Pressure Controller 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.
Thermocouple Break Protection: In the case of a thermocouple break, the control can be transferred to manual mode to continue the heating cycle and the user can alter the % of control output. The deviation hold feature assures guaranteed ramp. For quick heating from the ambient temperature, the hold feature is disabled in the very 1st ramp. Front Panel LED indicates the start and end of the cycle, the status of heater output, the status of the heating ramp, soaking, or cooling ramp. The unit of temperature measurement can also be selected as °C or °F as desired.
Auto Tracking Feature: In case of power failure during the normal heating cycle, the temperature is likely to drop. This PID Profile Controller has a special feature to auto-track the heating rate on the resumption of power supply. This is the unique feature of the controller and normally not available in other ordinary controllers.
Master-Slave Control Feature: For larger heating systems requiring more than one controller, the master/slave feature facilitates the user to program one controller as a master and others as a slave. The slave controller will follow the program fed in the master controller. This facility allows uniform heating of the bigger jobs. The master-slave configuration is achieved using the RS485 interface. Out of many controllers, anyone controller can be configured as a master controller and others as slaves. Single Master can control a maximum of 30 slave controllers.

Key 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.
Application:
  • Furnace / oven control
  • PWHT and SR heat treatment cycle
Ordering Information:

Sr. No.SpecificationsPart No.
1.1Ramp/Soak controller with K type thermocouple input and SSR + 4-20mA control output
and High/Low/End of Profile Relay outputs.
1706-1
1.2Ramp/Soak controller with K type thermocouple input and SSR + 4-20mA control output
and High/Low/End of Profile Relay outputs and RS485 interface for Master/Slave control.
1706-2
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Ramp Soak PID Temperature Controller PRC-300

Ramp Soak PID Temperature Controller PRC-300
  • Ramp Soak PID Temperature Controller PRC-300
  • Ramp Soak PID Temperature Controller PRC-300
Get Best Quote
Approx. Price: Rs 9,975 / NumberGet Latest Price

Product Details:

BrandLibratherm
Model No.PRC-300 (Part No.: 1702-2)
Size96 x 96 mm
Control TypePID/On-Off
Input TypeThermocouple, RTD, Current (mA), Voltage (mV)
Control output TypeRelay/SSR, Analog (mA/mV)
Country of OriginMade in India

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

Description:

Libratherm offers Microcontroller based multiple Ramp/Soak Programmable PID Temperature Controller Model PRC-300 which is 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). This PID SSR Temperature Controller PRC-300 offers a single profile of 16 steps that 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 user-selectable standard temperature sensors like K, R, S, and B type thermocouples.
The Profile Control System 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 an 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/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 online temperature profile of the heating system, a serial communication port on the RS485 interface can also be optionally provided, the same can be connected to the computer. Libratherm offers Microsoft Window-based Software to view the online behavior of the heating system in both graphical and tabular format on the computer screen.
Key Features:
  • Accepts thermocouple, RTD(Pt-100), Infrared pyrometer.
  • Both switching and linear PID control outputs.
  • Servo start from the process temperature.
  • User programmable single pattern of 16 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.
Application:
  • Heat Treatment Cycle (Tempering, Hardening, Annealing) control
  • Investment Casting
  • Laboratory High Temperature Furnace Control
  • Laboratory Low Temperature Oven Control
  • Industrial high temperature furnace control

Ordering Information:

Sr. No.SpecificationsPart No.
1Input from R, S, B t/c with (SSR + 0-5V or (4-20)mA) control output + High or Low and End of Profile Relay outputs.
For High Temperature Furnace control (up to 1700 °C).
1702-1
2Input from K t/c with only SSR control output + High or Low and End of Profile Relay outputs.
For Medium Temperature furnace control (up to 1200 °C).
1702-2
3Input from K t/c with (SSR + 0-5V or (4-20)mA) control output + High or Low and End of Profile Relay outputs.
For Medium Temperature furnace control (up to 1200 °C).
1702-3
4Input from RTD(Pt-100) with (SSR + 0-5V or (4-20)mA) control output + High or Low and End of Profile Relay outputs.
For Low Temperature ovens (up to 400 °C).
1702-4
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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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