Digital Process Indicator and Controller

Model	Product Description	Size (mm.)
DVI-483	3 and ½ digit AC /DC Voltage Indicator	48 x 96 x 120
DCI-483	3 and ½ digit AC / DC Current Indicator	48 x 96 x 120
DPI-480	3 and ½ digit Process Indicator with Loop Supply	48 x 96 x 120
DPI-12	3 and ½ digit Process Indicator with Loop Supply	96 x 96 x 120
DPI-484	4 and ½ Digit Process Indicator with Loop Supply	48 x 96 x 120
DPI-1000	1” Display size 3 and ½ digit Indicator with Loop Supply	192 x 96 x 160
DPI-2000	2” Display size 3 and ½ digit Indicator with Loop Supply	192 x 96 x 160
DPI-4000	4” Display size 3 and ½ digit Indicator with Loop Supply (Wall mounting enclosure)	500 x 250 x 150
DPI-720-FLP	3 and ½ digit process indicator in FLP enclosure	350 x 200 x 160
*Loop supply of 24VDC @ 100mA is provided for external loop powered process transmitter.

On-Off Process Controllers

Model	Product Description	Size (mm.)
DPC-300	Single set point on/off controller pot. setting with built in loop supply	96 x 96 x 120
DPC-305	Single set point on/off controller potentiometer setting with Dual display (One each for PV and SV) with built in loop supply	96 x 96 x 120
DPC-12	Two set point on/off controller pot. setting with built in loop supply	96 x 96 x 120
DPC-22	Two set point on/off controller (2” display size) with pot. setting with built in loop supply	192 x 96 x 160
DPC-720-FLP	Single set point on/off controller potentiometer setting in Flame Proof Enclosure with loop supply.	350 x 200 x 160
DPC-722-FLP	Two set point on/off controller potentiometer setting in Flame Proof Enclosure with loop supply.	350 x 200 x 160
*Loop supply of 24VDC @ 100mA is provided for external loop powered process transmitter.

Description :

Libratherm offers simple Digital Process Indicator Controller, which are low cost, accurate, rugged and reliable instruments available for indication and single and dual set point On/Off control for general-purpose process control applications. Indicators are available in display sizes of 0.5” to 4” for panel mounting and shop floor installations.

Models featured here can be used to monitor and control the various industrial process parameters such as AC/DC voltage and current, Pressure, Load, pH, ORP, Conductivity, RPM, Flow, Level, Humidity etc. Single and Two set points with relay outputs are provided for control or alarms.

All instruments accepting 4-20mA are also provided with built in 12 to 24VDC loop supply.

Some of the above models are also available in suitable size Weather proof and flameproof /Explosion proof enclosures for use in the hazardous environment.

Features :
• Elegant appearance and compact in size.
• Accurate and sturdy in operation.
• Accuracy better than ± 0.5 % of the full scale.
• Very easy to operate.

Application :
Monitoring of Process parameters with digital display
• Pressure, Weight, Flow, Level control
• pH, Conductivity, ORP Control
• AC/DC voltage and current control
• Measurement of RPM, LPM, BPM etc…

Technical specifications :

Input	AC/DC voltage and Current, process signal of 4-20mA, 0-1VDC, 0-5VDC, 0-10VDC ( please refer to Input and Range selection table in PDF catalogue).
Accuracy	Indicating accuracy better than ± 0.2 % of the specified range
Display	3.5 digits or 4.5 digits 0.5” Red 7-segment LED display. Other Display sizes are model dependent as given in the above tables.
Range Calibration	User accessible ZERO and SPAN presets to calibrate the desired range of display proportional to input.
Set point	Single or Dual - adjustable using front panel multi-turn potentiometers with push to read membrane switches. For Low Alarm and / or High Alarm outputs.
Type of Control Outputs	a) Relay changeover contacts (rated for 6A @ 230VAC) and b) Solid state relay driver (0 to 10) VDC logic pulse.
Hysterisis (Fixed)	2 counts for ON/OFF action (for 1 count resolution controller) 0.3 count for ON/OFF action (for 0.1 count resolution controller)
Supply	230 VAC or 110VAC 50/60Hz (5VA max)
Size	As given in the above table - 72 x72, 96 x 48, 96 x 96, 192 x 96 mm
Panel Cutout	68 x 68, 92 x 44, 92 x 92, 186 x 92 mm ± 0.5 mm.
Enclosure	ABS Plastic /Metal powder coated with polycarbonate front, Aluminum Die cast housing for flame proof enclosures, Metal enclosures for large display.