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LP400
LOOP POWERED DISPLAY
CALIBRATED IN ENGINEERING UNITS
ALSO DISPLAYS LOOP CURRENT

FEATURES
bulletProvides 3 1/2 Digit Liquid Crystal Display (LCD) Proportional to a Process Loop Current
bulletLoop Powered (4/20mA or 10/50mA)
bulletEasy-to-Read 0.8 inch Digits
bulletTrailing Dummy Zero (±19990)
bulletSwitch-Selectable Engineering Units/Loop Current Display
bulletSplashproof and Corrosion Resistant Housing
bullet5 + 5 Year Warranty


DESCRIPTION

The LP400 Loop Powered Display provides digital indication of a4/20 mA or 10/50 mA process loop signal. The display takes its operating power from the loop current and requires no other source of power.

Wide-ranging zero and span adjustments plus switch-selectable decimal point location and trailing zero allow the display to be calibrated in engineering units. A front panel Engineering Units/Loop Current switch permits an accurate check of the actual process loop current without recalibration.

Designed for field mounting, the LP400 is splashproof and corrosion resistant and operates from -40 to 185°F (-40 to 85°C). The circuit board is conformal coated for protection from humidity and contamination. Optional accessories include a pipe mounting kit(PMK400).


TYPICAL APPLICATIONS

Displaying process variables where line power is not available.

MOUNTING

The LP400 may be mounted on a wall or panel or on the end of a 3/4 inch NPT conduit or pipe stub (requires 3/4 inch conduit fitting). An optional pipe mounting kit, Model PMK400, enables the LP400 to be strapped to vertical or horizontal pipes up to 12 inches in diameter. 

SPECIFICATIONS

INPUT RANGE
4/20 mA or
10/50 mA

INPUT VOLTAGE DROP
3.5 V max
  (equivalent to 175 ohms at 20 mA
  or 70 ohms at 50 mA)

DISPLAY
Digit Size 0.8 inch LCD
  3 1/2 digits, 
  ±1999

Switchable Decimal Points and 
Trailing Zero 
  ±1.9.9.90

Control Range Zero
  ±1999

Span
  min span 10/max span 3998
    (full scale minus zero)

Update
  3/sec

DISPLAY SWITCH
allows quick check of loop current
  (400/1999 or 100/500)
  Decimal point remains in engineering
  units position

ACCURACY
±0.05% of reading plus 1 digit

OPERATING TEMPERATURE
-40°F to 185°F
-40°C to  85°C

TEMPERATURE STABILITY
±(0.01% of span plus 0.01%
of display zero offset)/°C

POWER
supplied by input current no separate power required

HOUSING
splashproof and corrosion resistant


TERMINAL CONNECTIONS
Current +
Current -
Tie Points
PIN +
PIN -
PIN Center Pins