The HX711 appears to be a combination of the analog bridge amplifier and A/D converter. Using such a combination device limits you to the options given. Advantage is one chip to do two jobs. With that said, get a separate bridge amp and connect it to a faster A/D (such as the one you have selected). The next question to be asked: can the SPI interface on the Arduino initiate and rate the 10k 24-bit samples in a second?
aswsystems. my first thought to use the AD7175 is to get rid of the amplifier so I get more range of reading. then I realize, the problem that will arise is the range between zero point voltage and max load voltage from the load cell. if the range is small, getting rid of the amplifier will not work. I would go as your opinion, combining amplifier with faster 16bit adc. I need to find the load cell voltage range first to find a suitable amplifier.
How fast is the load cell (slew rate)?
What's the slew rate of the ADC?
What's the total data size in 1s at 10kSPS and 16 or 24 bit resolution?
You'll need one of the bigger Arduinos with at least 20KB free RAM.
DrDiettrich, I'm not sure about the slew rate. it is a used load cell I got from the part store. besides the load cell, I need to get a reading from the rotary encoder to read the speed of load falling. I'm planning to get a faster controller but right now I only have Arduino for testing.
Have you worked out whether the load cell will withstand the energy of impact?
johnerrington, sorry I write 10kn. my mistake. actually, it is a 100kn load cell and it can withstand the force. the force will be around 10kn. correct me if I'm wrong.