Automatic calibration of the sensors used in a miniature STD instrument
Original version
This report is not to be cited without prior reference to the authorAbstract
The paper describes a system for simplified calibration of a new STD instrument.
When measuring, the raw data from the instrument conductivity, temperature and
pressure sensors are fed into a microprocessor inside the instrument. The
microprocessor computes the calibrated primary data by inserting the raw data into
an equation of the form Y= A+B.X+C.Xexp2 where A,B and C are calibration
coefficients.
The new instrument automatically computes and inserts these calibration
coefficients itself when exposed to a temperature bath, a conductivity bath and a
pressure reference with a few known values.