2
Wiring Options
Wiring Options
For 4-wire RTD probes, connect the four lead wires to your RTD logger as show in the figures below.
For 3-wire RTD probes, short inputs 3 and 4 together, then connect the lead wires to input 1, 2 and 3.
For 2-wire RTD probes, short inputs 3 and 4 together and inputs 1 and 2 together, then connect the RTD lead
wires to inputs 2 and 3.
Warning: Note the polarity instructions. Do not attach wires to the wrong terminals. 100
Ω
, 2 or 4 wire RTD probes
are recommended for the most accurate performance. Most 100
Ω
, 3 wire RTD probes will work, but Omega cannot
guarantee the accuracy. To determine whether or not the 3-wire RTD probe will work, the resistance between the
two same colored wires should be less than 1
Ω
. (Note: Please contact the manufacturer of the RTD probe for
questions on the resistance)
Installation Guide
Installing the Interface cable
- OM-CP-IFC200
Insert the device into a USB port. The drivers will install automatically.
-OM-CP-IFC110
Plug the serial cable into the port and verify it is secure.
Installing the software
Insert the Omega Software Flash Drive in an open USB port. If the autorun does not appear, locate the drive
on the computer and double click on
Autorun.exe
. Follow the instructions provided in the Installation Wizard.
OM-CP-OCTRTD
KEY
4- Excitation Current Out (+)
3- Measurement (+) Input
2- Measurement(-) Input
1- Ground (-)
