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

LAUREL ELECTRONICS INC. , 3183-G Airway Ave., Costa Mesa, CA 92626, USA • Tel 714-434-6131 • www.laurels.com 4
Potentiometer Follower Application
In potentiometric (or potentiometer follower) appli-
cations, the signal from a sliding contact voltage
divider can be converted to engineering units such
as position, level or percentage. By operating in a
ratiometric mode, the transmitter removes any
effects caused by variations in the excitation supply. For use with a 1 kΩ potentiometer, the recommend-
ed applied excitation voltage is 10V. A 2 kΩ resistor
should be placed in series with the excitation output
and excitation return leads. This will allow the trans-
mitter's 2V scale with a high input impedance of 1
GΩ to be used.
Ordering Guide
Create a model a model number in this format: LT20P, 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
Process Signals (e.g., 4-20 mA, 0-5V)
P Field scalable. Default scaling is 0-200V in = 4-20 mA out
P1 Custom Scaling. Specify min input, min output; max input, max output Signal Input
Note: The same DC signal conditioner can be user configured for process, strain or
potentiometer follower signals, as well as DC Volts or DC Amps. It is precalibrated in
EEPROM for all DC Volt and DC Amp ranges listed for DC transmitters.
Accessories CBL04 RS-232 cable, LTA to computer or USB adapter
CBL02 USB to RS-232 cable adapter