Re: 32-bit measurment accuracy
Many industrial flow computers in the UK use 16bit registers to record the output of pressure readings, themselves transmitted by analogue 4-20mA on a Wheatstone bridge to the DAC. The underlying sensors are often duplicated with ranges of 0-100 or 0-1000mbar differentials. Without fail, noise is observed on the 16bit Conversion. For very low flow rates especially this is a problem for the sensor response is non linear, much steeper, and more uncertain at the bottom of the range.
Most sites never get anywhere near design flow rate (=1000mbar differential) because they are designed to deal with very high day-after-tomorrow winters. In other words an awful lot of flow data is subject to big errors across the board. I would’t care, but said common flow computers have got 32bit registers available, that simply aren’t used for no good reason. Swapping to them would effectively eliminate at least this noise/error.
The two gentleman that practically put the regime in have both retired, I’ve long since moved to another job. Knowledge will be lost and forgotten. Ho hum!