The differential pressure type steam flow measurement instrument has large calculation error under variable working conditions. To solve this problem

relevant analysis and research is carried out

and it points out that

under variable working conditions

the revised calculating coefficients of the differential pressure type steam flow measurement instrument change greatly

and the fixed correction coefficients of the existing measurement correction scheme cannot meet the engineering requirements

so it is necessary to re-calculate iteratively. Combined with theoretical calculation and engineering application experience

in view of the optimization calculation and logic configuration of various correction coefficients under variable working conditions

a simplified modified calculation method which is suitable for engineering application is proposed

which effectively improves the measuring accuracy of the differential pressure type steam flow measuring instrument under variable operating conditions and meets the practical requirements of engineering.