Computer programme for calculation of fluid flow through throttling devices (primary elements).
The programme has been verified by ČMI Brno in compliance with ISO 5167-1-4 standards and it acquired ZR 141/01-0001 certificate.
Enables to solve 3 types of tasks:- calculation of diameter of primary element
- calculation of pressure differential
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calculation of gas, fluid, steam flow (in compliance with international definition - IFC 67, IAPS 1984, IAPWS-IF97)
DELTA programme calculates uncertainty of mass flow-rate, not only for calculation routine but for numerous values as well. Gas and fluid flow can be specified in volume or mass units. Pressures can be specified as over-pressure or absolute pressures. For orientation calculation also wet steam can be used. Coefficient of thermal expansiveness is specified by the choice of the material or can be specified directly. Particular entries can be specified in various physical units.
Within the calculation of calibrated values adjustment for calibrated values can be calculated for DANIEL type 2271 orifice plate.





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