PID Temperature and Process Controller

Our range of Micro-controller based PID temperature and process controller are dual heat/cool output in the form of DC pulse with direction control for motorized valves. Other features of this product are as follows -

Design	High speed 8 bit microcontroller based with 12bit ADC/DAC
Temperature Sensor Input / Process Input	Thermocouple type J, K, R, S, B, C, D or RTD(Pt-100) 2 or 3-wire input. DC voltage, (4 – 20)mA. (Fixed / Universal in nature and it is user selectable using key board in combination with DIP switch.
No. of Inputs	Single or Dual inputs
Temperature Range / Process Range	Full range of the specified input type. For process input the range is programmable from 0 to 3500 count or -2000 to +2000 counts with the facility to select decimal point at 0.000, 00.00, 000.0 locations.
Accuracy	Better than ± 0.1% of the specified range.
Resolution	0.1/1°C/unit
Sampling rate / Display rate	40mS / 1 second
Indicating Accuracy	+/- 1°C for Thermocouple +/- 0.1°C for Pt-100 and for other inputs – absolute to the input signal.
Display	4 digits 0.5" /0.3” Red 7-segment display for process variable and Set Value.
Control Algorithm (User selectable)	i) PID or ON/OFF selectable (when specified for switching output). Direct action or Reverse action (User selectable) ii) Dual heat/cool output in the form of DC pulse with direction control for motorized valves.
Tuning	Auto/Manual
Control Outputs (Switching)	DC pulse 0 to 10VDC – 2 nos. External AC/DC SSR can be used to control final control device or forward /reverse valves)
Control Outputs (Analogue)	4-20mA or 0-5VDC or 0-10VDC. (User configurable outputs) – 2 nos. (for single loop or dual loop)
Retransmission Output	4-20mA non-isolated linearized and proportional to the selected input.
Alarm Outputs	2 extra Relay Outputs - can be used as High or Low Alarms.
Remote Set point (Optional)	Remote 4-20mA input to vary the set point.
Loop Supply	24VDC @ 50 mA
Supply	90 to 250VAC, 50/60Hz.
Sizes	96 x 96, 72 x72, 96 x 48, 48 x 96 mm. (Depth = 120 mm)
Enclosure	ABS plastic with polycarbonate front.

The microprocessor based PID temperature / process controller that we manufacture are 4 digits 0.5" Red 7-segment display for process variable and 4 digit 0.3” for Set Value. Its unique features includes -

Design	High speed 8 bit microcontroller based with 14 bit ADC
Temperature Sensor Input / Process Input	Thermocouple type J, K, R, S, B, C, D or RTD(Pt-100) 2 or 3-wire input. (Fixed and to be specified by user)
No. of Inputs	Single only
Temperature Range / Process Range	Full range of the specified input type with 0.1°C resolution. 0.0 to 2000.0°C
Resolution	0.1°C
Sampling rate / Display rate	100mS / 1 second
Indicating Accuracy	+/- 0.1 % for Thermocouple / Pt-100
Display	4 digits 0.5" Red 7-segment display for process variable and 4 digit 0.3” for Set Value.
Control Algorithm (User selectable)	PID or ON/OFF selectable (when specified for switching output)
Tuning	Auto/Manual
Control Outputs (Switching)	DC pulse 0 to 10VDC.
Control Outputs (Analogue)	4-20mA or 0-5VDC or 0-10VDC.
Alarm Outputs	2 extra Relay Outputs - can be used as High or Low Alarms.
Supply	230VAC / 110VAC +/- 20%, 50/60Hz.
Sizes	96 x 96 x 160 mm.
Enclosure	Metal with ABS bazzel and polycarbonate front graphics.

The product Microprocessor based 8 loop PID Temperature and Process Controller is Auto/Manual tuning of PID values. Its technical specifications are as follows -

Design	8 bit microprocessor with 12 bit ADC and 8 bit DAC
No. Of Input Channels	2, 4, 6 or 8
Input	J, K, R, S, B, C, D, RTD(PT-100), RTD(PT-1000)/2 or 3 wire, (4-20)mA, (0-5)V etc.
Range	Full range of the specified input. ( 0 to 4000 counts)
Accuracy	Better than ± 0.1% of the specified range.
Resolution	0.1/1.0 Subject to the specified range
Display	4 digit 0.5” Red 7-segment LED for actual temperature 4 digit 0.5” Red 7-segment LED for set temperature 2 digit 0.5” Red 7-segments LED for channel number.
Open Sensor Indication	Display shows Flt-1 or Flt-2 and outputs will be turned OFF
Tuning	Auto/Manual tuning of PID values
PID and Set Values	Settable independently for each channel.
Settings	Using front panel membrane key board to set the various values
Sampling Rate	125 mS per channel.
Display Scan Rate	1 to 99 sec
Skip/Hold	Available through key board in configuration mode
Memory Backup	Retention of PID and set values in the non volatile memory in the event of power failure
Alarm Outputs	2 Relay outputs can be used as High/Low Alarms.
Control Action	PID or ON/OFF selectable (for both direct and reverse action)
Control Output	DC Pulse, (4-20)mA, (0-5)VDC output per zone with soft start and power limit facility for analog output
Interface	Parallel Centronics printer output port for Printer interface and Serial (RS232/RS485) for PC interface with Window based software on Modbus ASCII Protocol
Supply	230VAC / 110 VAC ± 10% (10VA), 50/60Hz or 24VDC @ 500mA
Size	192 x 96 x 200 mm , Metal Enclosure with ABS bazzel.
Panel Cutout	188 x 92 mm ± 0.5 mm

APPLICATION: • Plastic extruders for pipes, sheets etc… • Plastic injection, for runner less moulding • Heat treatment using tunnel furnace. • Large furnace and oven for homogeneous control • Multi zone furnace average control suing multiple sensors