Scale For weighing a 20 Kg Gas Bottle using a load Cell Need help please with circuit Diagram

Reloadron

Joined Jan 15, 2015
6,527
Luckily the nitrogen supplier went to a new gauge on the tanks that actually work reliably this time..
We had these little like float level indicators on the large Liquid LN tanks which worked pretty well and yeah, those things are heavy! I liked that the large ones had wheels. :)

Ron
 

Thread Starter

RodneyB

Joined Apr 28, 2012
697
hi R,
This circuit will give 0v thru 5V for 50kG.
The AD623 is all the components within the dashed rectangle.

R16 and R17 are the two resistors required to complete the full bridge.
1K at 0.01%

E

Hi Eric
My supplier does not have an AD623, is there anything else I could substitute it with
 

ericgibbs

Joined Jan 29, 2010
15,348
Hi

Hope you have had a great day. I can get an INA126P, from RS in South Africa.
hi R,
The 1NA126 is designed for dual supply operation.
If you do not have dual supplies, it is possible to use a single 5V supply, but requires a 1.2v ref voltage.
Let me know which option you intend using.
E
 

Thread Starter

RodneyB

Joined Apr 28, 2012
697
hi R,
The 1NA126 is designed for dual supply operation.
If you do not have dual supplies, it is possible to use a single 5V supply, but requires a 1.2v ref voltage.
Let me know which option you intend using.
E
Right I went back to RS components and explained I needed a single supply. They sent me this list

INA122P

INA125PA

INA131AP

Will any of these work?
 
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