testing load cell

Thread Starter

dashhossein

Joined Jul 30, 2020
48
hello ,
i have a 40 KG load cell which i doubt that it is work correctly ,
for test i connected the black wire to negative and red wire that to +5 V electricity then connect white and green wires to multy meter .
multymeter switched to millivolt DC , it show -1 V and if i pressure to load cell nothing will change .
also resistance between red and black is 286 Ohm , and the resistance of green and white is 286 Ohm too .
is something went wrong ?
should i replace the load cell ?
 

ericgibbs

Joined Jan 29, 2010
14,190
hi,
If your are confident that the resistance measurements are correct and the fact it will not register a weight as an output mVoltage, indicates the LC is defective,
E
ESP_ 507 Jun. 23 17.30.png
 
Last edited:

Thread Starter

dashhossein

Joined Jul 30, 2020
48
hi,
If your are confident that the resistance measurements are correct and the fact it will not register a weight as an output mVoltage, indicates the LC is defective,
E
View attachment 242006
is it important to connect LC to 10 V ? i use 5 V
last question is it possible to check health of LC only from resistance between elements ? if yes how should we calculate ?
 
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