METHOD OF MEASURING PRESSURE AND CALIBRATION BASED ON TENSOBRIDGE INTEGRATED PRESSURE TRANSDUCER Russian patent published in 2016 - IPC G01L9/04 G01L27/00 G12B7/00 G01D3/28 

FIELD: measuring equipment.

SUBSTANCE: invention can be used for precision measurement of pressure based on tenso-bridge integrated pressure transducer in wide range of operating temperatures. Disclosed is method of measuring pressure and calibrating, in which calibration additive and multiplicative temperature error is carried out at continuous measurement of stresses with diagonals of tenso-bridge separately for minimum and maximum values of pressure at temperature change from minimum to maximum operating temperature and back, and non-linearity of converter from estimated pressure at pressure change in well and extreme points of working temperatures. Pressure is calculated by coefficient calculated during calibration, by sequential additive and multiplicative temperature error, as well as non-linearity of converter from pressure.

EFFECT: higher measurement accuracy due to compensation of additive, multiplicative errors and nonlinearity tenso-bridge integrated pressure transducer in whole range of working temperatures and pressure at reduced time and labour intensity of calibration.

1 cl, 4 dwg