• Large Digital Panel Meter - DDL Series from APG
  • A DDL shows the gallons of water in a tank as the tank level goes down, measured by an MNU.

Large Digital Panel Meter


Easily Read Your Display From Any Distance

Two lines of 2.80" characters and four LED alarm indicators, on a Sunlight Bright display


Easy to Program
With four push buttons below the display for programming in place, and a USB port for connection to a PC running MeterView Pro software, setting up the DDL is simple.

Every DDL has a polycarbonate-glass blended front face that is rated NEMA 4X, IP65, for long-lasting life in tough environments.

The DDL can read a variety of current and voltage inputs, plus one digital input, and control up to four SPDT output relays and an isolated 4-20 mA output.

Common Model Configurations

All common model configurations can be purchased online, click the model number link below. Refer to Model Number Configurator on the datasheet for a full list of configuration options.

Large Digital Panel Meter
Model Number Model Description
DDL-A00 85-265 VAC input power, No outputs (visual display only)


2 lines, 6 characters each, 1.80" tall
Display Update Speed
200 ms (5 updates per second)
± 0.03% of calibrated span
Sunlight Readable Bright Display Standard


Supply Voltage
VAC: 85 - 265
VDC: 12 - 24
Input Impedence
Voltage Inputs: > 500 kΩ
Current Inputs: 50 - 100 Ω
SPDT Relays
3 A @ 30 VDC / 125/250 VAC resistive loads
1/14 HP (≈ 50 W) @ 125/250 VAC resistive loads
Input Contact/Digital Input
Contact Voltage: 3.3 VDC
Digital Input Logic High: 3 - 5 VDC
Digital Input Logic Low: 0 - 1.25 VDC
Default Logic: Normally Open/Low


Input Options
0-20 mA, 4-20 mA
0-5 VDC, 1-5 VDC, 0-10 VDC, ± 10 VDC
Output Options
4 SPDT Relays
Isolated 4-20 mA
Output Transmitter Power Supply
Isolated 24 VDC @ 40 mA
Sensor Power Supply
24/10/5 VDC selectable
200 mA for VAC models
100 mA for VDC models


Programmable Features
Min/Max, Tare, Hold
Multi-scale Input Display (e.g. Level & Volume)
Noise Filter
High/Low Alarms
Alternating Pump Control
Time Delay for Output Relays
4 Front-panel Push Buttons
MeterView Pro Software (with PC)


10.63" x 12.59" x 4.77" (270 mm x 319.7 mm x 121.2 mm)
6.10 lb (2.76 kg)


Front panel rating
Storage Temperature
-40° - 185°F (-40° - 85°C)
Operating Temperature
-40° - 150° F (-40° - 65°C)


UL/C-UL Listed