The ISO5167V application module is implemented against the ISO 5167-1:1991(E) Standard and provides the following functionality:
- Calculation and display of the mass and volume flowrates through Venturi tubes
- Calculation and display of the Reynolds number
- Four different tapping types
- Calculations for gas or liquid
- Standard supervisory workstation interface
- Standard software block
- Status and alarm display
- Engineer point display
- External conditions can be used to generate additional alarms
The ISO5167V application module forms part of a library of software function blocks designed to aid the implementation of flow calculation for Venturi tubes. The calculation is based on SI units (barG, °C and kg/hr)
Applications
The application module offers the functionality required to calculate mass and volume flowrates of fluids through Venturi tubes with either of the following tappings:
- As Cast
- Machined
- Rough Weld
- Nozzle
The module processes calibration and lab data and offers intermediate values such as corrected throat and pipe diameters.
Outline Specification
I/O
- Differential Pressure input
- Upstream Static Line Pressure input
- Upstream Line Temperature input
- Upstream Density input
- Operator/Calibration Parameters
- Venturi Tube Calibration Diameter and Temperature
- Venturi Tube Expansion Factor
- Pipe Calibration Diameter and Temperature
- Pipe Expansion Factor
- Isentropic Exponent
- Dynamic Viscosity
- Relative Density
- Specific Heat Ratio
Alarms
- Diameter Ratio out of Range (Beta)
- Reynolds Number out of Range
Calculations
- Mass Flowrate
- Standard Volumetric Flowrate
- Corrected Venturi tube and Pipe Diameters
- Pressure Ratio
- Diameter Ratio
- Expansibility Factor
- Discharge Coefficient
- Reynolds Number
- Downstream Static Line Pressure
- Upstream Line Temperature
