SPECIFICATIONS
INPUT: 4-20 mA
DISPLAY: Sharp, 0.5
"
high LCD, 3
1
/
2
digits, 1999, User
selectable decimal point.
CALIBRATION: 2 Step; Non-interacting zero and span.
CALIBRATION RANGE: 4 mA input: -500 to +500; 20 mA
input: between 20 to 2000 above 4 mA display.
MAXIMUM INPUT CURRENT: 30 mA
MAXIMUM VOLTAGE DROP: 1.5 VDC @ 20 mA; 3.5 VDC
@ 20 mA with backlighting option.
ACCURACY: ±0.1% of span, ±1 count.
CONNECTIONS: Removable screw terminal block (provided).
OPERATING TEMPERATURE RANGE: -40 to 85°C
ENCLOSURE: High impact-resistant ABS plastic body, clear
ABS plastic cover; NEMA 4X,
1
/
2
"
conduit hole provided at
base. May be provided on back for panel mounting
applications, call factory for details.
LOOP-POWERED BACKLIGHTING OPTION: Factory
installed only. Powered directly off the 4-20 mA loop, no
batteries required. The display brightness will increase as the
input signal current increases.
WARRANTY: 1 year parts & labor.
SETUP
The only tools needed for calibration are a calibrated current
source and a screwdriver.
DISASSEMBLY
The removable screw terminal connector is located on the
lower circuit board. To access these input terminals it is
necessary to remove the display board from the input signal
board. This is done by first removing the enclosure cover.
Next, loosen the 2 screws that hold the display board to the
standoffs. Rotate the display board so the right side comes
off the standoff first, proceed to remove the display board
from both standoffs. Be careful to avoid contact of the display
with rough surfaces. The display board may be disconnected
from the ribbon cable simply by pulling up on the ribbon
cable connector located above the display. Connect a 4-20
mA input signal to terminal J5 located on the input signal
board as shown below. When re-assembling the circuit
boards be careful NOT to over-tighten the screws.
INSTALLATION
Installation of the LI2X involves removing the display board
and screw terminal connector. It may also be necessary to
remove the input signal board depending on type of conduit
hubs used.
CONNECTIONS
DECIMAL POINT SELECTION
The decimal point jumper array (JP1) is located to the upper
right corner of the display board. Place a jumper across the
bottom pins for a display of 199.9, across the middle pins for
a display of 19.99, and across the top pins for a display of
1.999
CALIBRATION
The LO calibration control (R11) is located below the display
and the HI calibration control (R9) is located to the right of
the display. Apply a 4 mA input signal and adjust the LO
control to display the desired reading. Next, apply a signal
between 16 and 20 mA and adjust the HI control to display
the desired reading. Complete the calibration procedure by
making any minor adjustments to the LO and HI controls.
DIMENSIONS
LI2X
APPLICATION INFORMATION
TOP VIEW
END VIEW
A
C
B
D
Wall Mounting
Holes Beneath
Cover Screws
E
F
Balance Control
(factory adjust only)
LO Calibration Control
HI Calibration Control
Decimal Point
Jumper Array
Ribbon Cable
Connector
JP1
HI
R9
R 11
LO
+
+
+
-
-
-
Loop Power
Supply
Signal Input
Connections
S
S
4-20 mA
Transmitter
Screw Terminal Connector
Ribbon Cable
Connector
Display Board
Input Signal Board
Screw Terminal
Connector J5
A. 3.15"
C. 2.36"
B. 4.33"
D. 3.54"
