APG Current Loop Display LPD

APG Current Loop Display LPD

The LPD Loop Powered Displays are designed to be inserted into a 4-20 mA sensor current loop to provide a local display without additional wiring. Setup is easy using the 3 buttons on the display. Simple scalable display for analog signals. Local display designed to be inserted into a 4-20 mA sensor current loop.

Loop Powered

The LPD is all about loop-powered circuits, perfect for installing just outside hazardous locations and displaying the readings from your intrinsic safety devices. The LPD has a 4-20 mA input and output.

Simplified User Interface

With just three buttons, and a large, two-line LCD display, using the LPD is straightforward and uncomplicated.

Optional Modbus RTU Programming

Alternatively, you can connect to the LPD from a PC running APG Modbus software via an RST programming module for quick and easy setup.


  • Large, full 5-digit display with 0.4 in. characters and 6-digit description line
  • Environmentally sealed housing; IP67 or IP68 certification
  • 4-20 mA input
  • Easy 3-button programming
  • User selectable units of measure (barrels, cubic inches, liters, cubic meters, gallons, million cubic feet, cubic feet, custom)
  • Optional RS-485/Modbus RTU output



RS-485 (Modbus RTU)2400, 9600, 19200, 38400 baud rates
Display ReadingsVolume, Level, Distance, Pressure
Display Update Rate500 mSec


Max Voltage Drop4.7 VDC @ 20 mA, 4.4 VDC @ 20 mA
Backlightpowered from the 4-20 mA loop


Plastic Housing (3.25 in.)IP67
Aluminum Housing (3 or 4 in.)IP68


Display5 Digit LCD, 0.4 in. Digits, 6 Character Description Field
 Plastic Housing
 Injection Molded Case
 IP67 Protection Rating
Aluminum HousingAluminum Pressure Die Casting, 0.5% Mg
 Chemically Resistant Paint
 IP68 Protection Rating


Storage Temperature-40° F - 160° F (-40° - 71° C)
Operating Temperature0° F - 160° F (-18° - 71° C)


Output Options4-20 mA Loop Powered Operation
Input4-20 mA


Programmable FeaturesUnits of Measure, Auto-Off, Averaging, Endpoints
 3-button Keypad

Download Data Sheet: Current Loop Display LPD

Ref: apgsensors.com