# HX711 mV/V information needed

1. ## Re: HX711 mV/V information needed

Hi,

Now it's 100kg ... confusing.

My answer: Don't do it. If a load cell is specified for 30kg then use it for 30kg max.
If overload is specified to be 200% ... this means 60kg, then the sensor will withstand this mechanically, but this is out of the specified operating area and you have to expect additional measurement errors.

Question: If a bungee rope is specified for 60kg, but your weight is 90kg ... would you use it?

Klaus

1 members found this post helpful.

2. ## Re: HX711 mV/V information needed

Originally Posted by KlausST
Hi,

Now it's 100kg ... confusing.

My answer: Don't do it. If a load cell is specified for 30kg then use it for 30kg max.
If overload is specified to be 200% ... this means 60kg, then the sensor will withstand this mechanically, but this is out of the specified operating area and you have to expect additional measurement errors.

Klaus
Its not me but the client who wants to overload the Load Cell.

Question: If a bungee rope is specified for 60kg, but your weight is 90kg ... would you use it?
Klaus
Of course not.

3. ## Re: HX711 mV/V information needed

Hi,

Its not me but the client who wants to overload the Load Cell.
Then don't make it to your problem.

Give him the datasheet and tell him that he is responsible if there are increased measurement error or if damage happens.

Klaus

1 members found this post helpful.

•

4. ## Re: HX711 mV/V information needed

Okay, will do that.

5. ## Re: HX711 mV/V information needed

hello,

on this post, you forget to tell us
it is a key punckt for all weight scale .

The first step is the mechanical design of the scale , before locking for how to do it with electronics parts.

With only one sensor 30Kg , it is possible to measure up to 100Kpg . ( even loosing a litle bit accuracy and resolution).

•

6. ## Re: HX711 mV/V information needed

If a sensor is declared to 200% overload, 300+% will produce plastic deformation to the sensor and it will be rendered useless. Mechanical construction does not figure anymore.

As per Klaus writing, if your weight is 80kg and you wish to use bungee cord declared to max overload at 60kg, I would encourage you to jump and in the aftermath to hear from you about the adrenalin rush (if you survive).

1 members found this post helpful.

•

--[[ ]]--