3 1/2 Digit LCD Digital Panel Meters with Loop Powered Adder Board
Green Negative
The DPL-3 provides a loop powered 3 1/2 digit LCD (standard black numerals) with optional 24Vdc powered red, blue, amber, or green negative backlight. It is compatible with virtually any 4 to 20mA dc process loop. Large 1/2" numerals. User selectable "°F", "°C", "PSI", and "%" engineering units can be displayed. Fully loop compatible. Separate zero and span adjustments. Decimal point user selectable. Factory calibration available.
Green Positive
Specifications
Specifications:
Display:
Digits:
3 ½ digits (±1999 counts)
Type:
0.45" (11.4 mm) 7 segment LCD
Backlighting*:
Optional Red Negative (red numbers/black background)
Optional Blue Negative (blue numbers/black background)
Optional Green Negative (green numbers/black background)
Optional Green Positive (black numbers/green background)
Polarity:
Automatic, “-” displayed
Annunciators:
°F, °C, PSI, % , user selectable
Decimal Points:
3 position, user selectable
Overload:
Three lower order digits blank for inputs >1999 & <-1999
Inputs:
Ranges:
4-20mA DC
Configuration:
Bipolar Differential
Impedance*:
300 ohms nominal
Performance:
Accuracy:
±(0.1% fs + 2 count)
Conversion Rate:
3 per second
Normal Mode Rejection:
>30 db @ 60 Hz
Common Mode Range:
±1V DC max
Common Mode Rej.:
>86 dB
Adjustments:
20-turn potentiometers
Span (gain) and Zero (offset)
Warmup:
10 minutes typical
Temperature Coeff.:
± 100 ppm per °C typical
Environment:
Operating Range:
0 to 50 °C
Storage Range:
-20 to 70 °C
Power Supply:
Powered by the Milliamp Control Loop
Optional Backlight:
24V DC at 35 mA typical
Mounting:
Snap-in Bezel mount
Connection:
2 screw terminals (4 with backlight)
*Impedance is rated at 24 Vdc and 20mA. Exercise caution to avoid too much impedance in the current loop. Most transmitters are rated 500 to 750 Ohm.
**Negative backlighting is lit numerals.
Positive backlighting is lit background.
Amber Negative
Red Negative
Blue Negative
Features
• Low-cost, high-performance replacement for many OEM DPMs
• Optional Red, Blue, Green or Amber backlighting
• Snap-in bezel mount eliminates mounting hardware
• Resistant to RF and EMI
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