Connecting Load Cells In Parallel - Unipulse F156 Operation Manual

2.CONNECTION

2-1-2. Connecting load cells in parallel

Some industrial applications require several load cells connected in parallel (e.g., tank or flow
scales).
A summing junction box should be used to facilitate connection and corner correction.
+EXC
-SIG
-EXC
+SIG
CAUTION
When connecting several load cells in parallel, load cell capacity should be higher than
expected load to compensate for mechanical shock or eccentric loading.
6
R
R
R
R
R
R
R
R
'n' (number) load cells connected in
parallel are considered one unit whose
capacity is 'n' x rated capacity of load
cells (load cells must have the same
capacity, bridge resistance, and mV/V).
The averaging resistor (R) must be in
same relative ratios with a low
temperature coefficient.
Averaging resistors are not needed if
load cells were designed for parallel
connection.
+EXC
-SIG
-EXC
+SIG
F.G
+S
-S