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TEST LOAD CELL WITH MICRIO MPU

A project log for IOTON MICRIO

Raspberry PI based, fully modular PLC for home and industrial automation.

Andrey VAndrey V 08/22/2019 at 19:350 Comments

I used MICRIO MPU for my Load Cell - Modbus interface test.

I did ADC and Load Cell noise test.

Left to right: MICRIO MPU, DI8 input module, Load Cell - Modbus interface, 0.2 ton Load Cell.

Test results:

Around 120 ADC counts of noise.  Full ADC resolution is 24bit  =  2^24 = 16,777,216‬. 

It's around 17 noise-free bits.

0.2 ton load cell has range 400 kg (200kg for compression and 200kg for tension).

For 400 kg range, with 17bit resolution, I can achieve an accuracy around 3 grams.

Not so bad)

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