Field,Mount,Loop,Powered,Display,Model LP400,Wilkerson Instrument

Field Mount Loop Powered Display Model LP400

TERMINAL CONNECTIONS

Current +
Current -
Tie Points


PIN +
PIN -
PIN Center Pins

Field,Mount,Loop,Powered,Display,Model LP400,Wilkerson Instrument

Field,Mount,Loop,Powered,Display,Model LP400,Wilkerson Instrument Catalogue
Field,Mount,Loop,Powered,Display,Model LP400,Wilkerson Instrument Manual


Field,Mount,Loop,Powered,Display,Model LP400,Wilkerson Instrument


Features

Field,Mount,Loop,Powered,Display,Model LP400,Wilkerson Instrument Provides 3 1/2 Digit Liquid Crystal Display (LCD) Proportional to a Process Loop Current
Field,Mount,Loop,Powered,Display,Model LP400,Wilkerson Instrument Loop Powered (4/20mA or 10/50mA)
Field,Mount,Loop,Powered,Display,Model LP400,Wilkerson Instrument Easy-to-Read 0.8 inch Digits
Field,Mount,Loop,Powered,Display,Model LP400,Wilkerson Instrument Trailing Dummy Zero (19990)
Field,Mount,Loop,Powered,Display,Model LP400,Wilkerson Instrument Switch-Selectable Engineering Units/Loop Current Display
Field,Mount,Loop,Powered,Display,Model LP400,Wilkerson Instrument Splashproof and Corrosion Resistant Housing
Field,Mount,Loop,Powered,Display,Model LP400,Wilkerson Instrument 5 + 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 185F (-40 to 85C). 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
-40F to 185F
-40C to  85C

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