Level transmitter calibration

• Calculation of the differential pressure and the output signal at the transmitter for any level.
• Option to simulate the startup of a boiler.
• Calculation of the uncertainty of the relative level in dependence of the densities in the legs. (For example to check the influence of the ambient temperature with tanks with two liquids) 

Analyzer probe and delay time

Calculation of frequencies, strength, and runtime for analyzers

Standards

• IEC/TR 61831 (2011)
  • Runtimes, flow rates, and kv/cv values
• ASME PTC 19.3 TW (2016)
  • Customized stress and frequency calculation as for thermowells

Features

The lag time of the medium from the sample point to the analyzer can be calculated. The pressures at the sampling point and at the return, the probe line (inner diameter, pipe roughness, resistances and length), the sampling line (inner diameter, pipe roughness, resistances and lengths before and after the analyzer) and the lag time from the filter to the analyzer can be taken into account. The lag time can be calculated as a function of the desired flow rate or as a function of the control valve parameters (Cv value or pressure difference).

Alternatively, the flow rate and parameters of the control valve can be calculated by specifying the lag time.

Thermowells

CONVAL® calculates critical values for stress and frequency of thermowells in pipelines and compares these values to the allowed limiting values. Temperature dependent values for the maximum allowable working stress, the elasticity modulus and the density are available for many materials.

Standards

• DIN 43772 (2000)
  • For standardized and variable forms with up to three sections
• ASME PTC 19.3 TW (2016)
  • Calculation of straight, tapered and step-shanked thermowells
  • Graphical stress analysis
• ASME PTC 19.3 1974
  • legacy, only for comparison

Features

• Design for up to three operating points in one calculation
• Support for dimensioning in standard-compliant dimensions
• Export to user-defined specification sheets

Graphical stress analysis

Pass / Fail Analysis

The CONVAL® stress pass/fail analysis provides a quick overview of whether the calculation complies with the standard. A color-coded traffic light system immediately points out problem areas.