Laurel Electronics LT: 4-20 mA & Serial Data Output Transmitter for Load Cell & Microvolt Signals - Manual (Page 4)

LAUREL ELECTRONICS INC. , 3183-G Airway Ave., Costa Mesa, CA 92626, USA • Tel 714-434-6131 • www.laurels.com 4
Load Cell Transmitter Connections
In 4-wire connection, the excitation and sense lines
are tied together. The transmitter can make ratiometric
corrections for supply voltage variations, but does not
compensate for variations in lead resistance. This
connection is often used with short cable runs.
In 6-wire connection, the sense lines are separate from
the excitation lines, thereby eliminating effects due to
variations in lead resistance. This allows long cable runs
in outdoor environments with temperature extremes.
For large scales, up to four 350 ohm load cells in paral-
lel can be powered by a single Laureate transmitter at
10V, 120 mA excitation. The excitation and sense points
of the four bridges are connected in parallel through a
summing box.
Ordering Guide
Create a model a model number in this format: LT20WM, CBL04
Transmitter Type LT Laureate Transmitter
2 Standard Main Board
4 Extended Main Board
Main Board
Note: Extended allows custom curve linearization and rate from successive readings.
Power 0 85-264 Vac
1 12-32 Vac or 10-48 Vdc
Signal Input WM1 Load Cell (4- or 6-wire ratio) with custom Scaling. Specify min input, min
output; max input, max output
Accessories CBL04 RS-232 cable, LT to computer or USB adapter
CBL02 USB to RS-232 cable adapter