In this situation, a sensor is used with only one resistor, R4. This resistor is
placed between A and C.
Three additional resistors must be provided: R1, R2 and R3 to complete the
bridge. You do this by using the half
-
bridge completion as described in the
previous section and then adding the additional R3 resistor between C and D.
There are two ways of doing this:
1
Use the standard 350 Ω resistor inside the acquisition card.
2
Provide a resistor.
Nothing needs to be done to the hardware for the first situation.
For the second situation, a resistor needs to be added to the plug
-
in module in
the location marked QB. Please refer to Figure 12.31 on page 250 for electrical/
schematic details and to Figure 12.32 on page 252 for mechanical/location
details.
Additional wiring needs to be added for the quarter
-
bridge completion resistor.
Depending on the selection made, connect either Pin 10 (350 Ohm) or Pin 9
(user) to the bridge connection marked C in the diagram, or directly to Pin 6
(
-
amp in) of the connector. Please refer to Figure 12.34 for connection details.
Inform the Perception software when a quarter bridge is used.
To select quarter
-
bridge completion in Perception
To select half
-
bridge completion in Perception, proceed as follows:
1
In Perception, go to the
Settings
sheet.
2
In the task pane, select the
Bridge
in the Input section.
3
Select one or more channels.
GEN3i
262
I3763-3.1 en HBM: public
