Microprocessor based Single profile Ramp/Soak programmable Temperature Controller is subject to the full range of the specified input. Model PRC-300

Design	Micrprocessor based 8 bit with 12 bit ADC and 8 bit DAC
Input	Thermocouple type J, K, R, S, B, C, D or RTD(Pt-100)/2 or 3-wire, (4-20)mA, (1000 to 1200)mV, (0-5)V etc. (any one to be specified).
Range	Subject to the full range of the specified input.
Resolution	0.1 / 1°C Subject to the specified input and range.
Accuracy	Better than ± 0.1% of the specified range.
Display	4 digit 0.5” Red 7-segment LED display for process value 4 digit 0.3” Red 7-segment LED display for set value
Tuning	Manual tuning of PID values.
Control Action	PID or On/Off (for both direct and reverse action).
No. of Profile	One (Format1 : SP0 – t1 – SP1 – t2 – SP3 – t3 – SP4 till SP16)
Ramp/Soak Steps	1 to 16 Steps. (no restriction in programming – that ramp should be followed by soak or vice versa)
Set Temperature	Programmable for each steps in the full range of the specified input
Time per Step	1 to 540 mins. (9 Hr. per step). Two or more steps can be combined for longer time duration.
Program Hold Facility	Manual Hold or Auto Hold (Hold back feature for guaranteed Ramp/Soak facility).
Memory Backup	Retention of PID and set values in the non-volatile memory in the event of power failure.
Alarm Output	High or Low or Event Alarm Relay (5A @ 230VAC).
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 facility for analog output.
Supply	90 to 240 VAC ± 10% (5VA), 50/60Hz
Size	96 x 96 x 160 mm.
Panel cut out	92 x 92 mm. +/- 0.5 mm.
Enclosure	Metal Powder coated.

With Manual tuning of PID values our product Microprocessor based Ten profile Ramp/Soak programmable PID Temperature Controller is available at industry leading prices. Model PRC-309 and PRC-310

Design	Micrprocessor based 8 bit with 12 bit ADC and 8 bit DAC
Input	Thermocouple type J, K, R, S, B, C, D or RTD(Pt-100)/2 or 3-wire, (4-20)mA, (1000 to 1200)mV, (0-5)V etc. (any one to be specified).
Range	Subject to the full range of the specified input.
Resolution	0.1 / 1°C Subject to the specified input and range.
Accuracy	Better than ± 0.1% of the specified range.
Display	4 digit 0.5” Red 7-segment LED display for process value 4 digit 0.3” Red 7-segment LED display for set value
Tuning	Manual tuning of PID values.
Control Action	PID or On/Off (for both direct and reverse action).
No. of Profiles / Patterns	1 to 10.(Format1 : SP0 – t1 – SP1 – t2 – SP3 – t3 … till SP16) (Format2 : PL0 – Pr1 – Pd1, PL1 – Pr2 – Pd2, … till PL16). One or More profile
No. of Ramp/Soak Steps per profile	1 to 16 Steps. (no restriction in programming – that ramp should be followed by soak or vice versa)
Set Temperature	Programmable for each steps in the full range of the specified input
Time per Step	1 to 540 mins. (9 Hrs. per step). Or 1 minute to 100 hours (Two or more steps can be combined for longer time duration).
Program Hold Facility	Manual Hold or Auto Hold (Hold back feature for guaranteed Ramp/Soak facility).
Memory Backup	Retention of PID and set values in the non-volatile memory in the event of power failure.
Alarm Output	High or Low or Event Alarm Relay (5A @ 230VAC).
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.
Supply	90 to 240 VAC ± 10% (5VA), 50/60Hz
Size	96 x 96 x 160 mm.
Enclosure	Metal Powder coated.

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 is programed for Temperature Controller. Model PRC-8000

Design	Microprocessor based 8 bit with 12 bit ADC and 8 bit DAC
No. of Inputs	2, 4, 6, 8
Input	Thermocouple type J, K, R, S, B, C, D or(Pt-100)/2 or 3-wire, (4-20)mA, (0-5)V etc. (each zone can be of same or different input type).
Range	Subject to the full range of the specified input.
Resolution	0.1°C for RTD and 1oC for thermocouple.
Accuracy	Better than ± 0.1% of the specified range.
Display	2 digit Zone no. 4 digit for Process Value and Set Value 6 digit for real time clock and calendar,
Settings	PID parameters and program parameters are settable for each zone.
Control Action	PID or On/Off.
No. Of Profile	Single Program for each zone.
Ramp Soak Steps	1 to 16 Steps per program. (Common OR Independent for all the zones)
Time per Step	1 to 540 mins. (9 Hr. per step). Two or more steps can be combined for longer cycle.
Program Hold Facility	Manual Hold or Auto Hold (Hold back feature for guaranteed Ramp/Soak facility).
SSP Control	When Ramp/Soak control is not required, facility for each zone to operate the controller in single set point mode is available.
Copying Facility	This facility allows Copying of Ramp/Soak profiles parameters of the 1st zone to the all other available zones.
Memory Backup	Retention of PID and set values in the non-volatile memory in the event of power failure. On power resumption the program will resume automatically from the last set point.
Alarm Outputs	2 Extra Relay outputs can be used as High/Low or Deviation Alarms.
Control Output	DC pulses, Triac, (4-20)mA or (0-5)VDC.
Interface	Serial (RS232/RS485) on Modbus ASCII Protocol
Supply	230VAC / 110 VAC ± 10% (10VA), 50/60Hz
Size	192 x 96 x 200 mm. (Metal enclosure with ABS front)

In the era of computerization, the user friendliness and the usability of the computer is very common aspect in the industry. EPRC - 8000 SOFTWARE DESCRIPTION: Computers are widely used for the majority of the industrial applications. In order to use the benefit and power of the PC, Libratherm offers standard, customized and dedicated computer programs or the software which runs on the window based operating platform in connection with the various Libratherm make temperature and process controllers, programmers and Data loggers to monitor the online process behaviour. Though, various industrial well known SCADA software package also do the job of PC interfacing, we still prefer to offer our own dedicated DAS software for the reason of our ability of customization, low cost and modification of the required hardware to meet the end users applications - when compared to the SCADA package. The various microprocessor and microcontroller based instruments are interfaced with the PC on RS232 serial port or RS485 bus having MODBUS RTU or ASCII protocol. Brief description of some of the software is described below: EPRC software - designed to interface with our controller PRC-8000 to control the temperature of eight heating zones. The software allows user to monitor the on line temp. of all eight zones on the screen, user can program the ramp and soak profile for each zone, feed the PID, Set Point and Program values or start and stop the profile through the computer keyboard, one can also view the real time values in graphical format which can be zoomed or scaled as per the requirement. Database can be searched with date and time or other user defined fields. Software can be customized to monitor more than one PRC-8000 on a single screen, selection options are provided to the user.