Unipulse F156, Operation Manual, Page: 15 / 160

2.CONNECTION
6
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.
R
R
R
R
R
R
+EXC
-SIG
+SIG
-EXC
+EXC
-SIG
-EXC
+SIG
F.G
+S
-S
‘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.
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.
R
R