imanjl
Junior Member level 1
ad7715 user
Hi
I use a load cell to measure weight in range 0-50Kg ,It is connected to a 16bit ADC and PIC mcu to display the result on LCD in grams . the load cell is from Bongshin Company :
DBBP-50 Kg(S type)
**broken link removed**
The problem is when I touch and move the end side of the load cell cable (which is connected to loadcell case) it comes out of calibration and while there is no weight on it, it displays random numbers in range 20-600 gr! This is fixed when I locate the cable in a particular position or I manually push the load cell in opposite direction of weight force in order to compensate the unwanted weight. Sometimes even without moving the cable the problem happens and there is random numbers on display .
I believe this is not about noise or any other electrical interface because it completely fixes with a physical action on load cell.
Does the load cell itself have a problem? Or it is a common behavior of a load cell in this range (50KG) .
Anyone has any idea about this ?
Thanks
Hi
I use a load cell to measure weight in range 0-50Kg ,It is connected to a 16bit ADC and PIC mcu to display the result on LCD in grams . the load cell is from Bongshin Company :
DBBP-50 Kg(S type)
**broken link removed**
The problem is when I touch and move the end side of the load cell cable (which is connected to loadcell case) it comes out of calibration and while there is no weight on it, it displays random numbers in range 20-600 gr! This is fixed when I locate the cable in a particular position or I manually push the load cell in opposite direction of weight force in order to compensate the unwanted weight. Sometimes even without moving the cable the problem happens and there is random numbers on display .
I believe this is not about noise or any other electrical interface because it completely fixes with a physical action on load cell.
Does the load cell itself have a problem? Or it is a common behavior of a load cell in this range (50KG) .
Anyone has any idea about this ?
Thanks