Secop Toolkit

Secop provides digital solutions to facilitate product selections and product support. The new Secop Toolkit currently offers several functions in one app:

The Secop Toolkit App is now available for devices running on Apple’s iOS or Google’s Android operating systems. Our Android Package (APK) file can be installed manually (depending on your Android OS settings), for example, if you do not have access to Google Play. The Toolkit is also accessible via this URL:

Application Selector

The Application Selector helps users find the best compressors for specific applications and conditions in only 5 easy steps. Once the market segment, the application type, and size are chosen, the range is narrowed down to only a few compressors that meet the searched requirements. The compressors that result from the research are the best choice based on the data entered. Secop always recommends contacting our Application Engineering team to select the best compressor.


The Toolkit also provides the Secop capillary tube selection software called CapSel. The CapSel app allows the user to calculate a capillary tube throttling device for a refrigeration system using empirical formulas. The result is a start value for optimization. The start value will result in an acceptable operating system. In certain cases, the best possible choice of capillary diameter and length might deviate remarkably from this calculated result. The capillary sizing is based on the assumption, that the capillary and suction line is connected to in min. 1 meter to make internal heat exchange between liquid and suction gas.
Well-designed capillary tubes in a hermetically sealed compressor system can lead to an energy-efficient system, which can be improved by the technology of variable-speed compressors.

Secop was formerly known as Danfoss Compressors. Our first selection program DanCap was developed in 2006 and is no longer supported. It was renamed to CapSel in 2012. As we update our software to reflect our current knowledge and experience, the CapSel app will showing improved calculation results compared to the old DanCap program.

The App includes the hydrocarbon refrigerants R290, R600a, and R170. Capillary tubes for refrigerating compressor systems with other refrigerants can also be calculated as well as the transitional refrigerants R452A and R513A. The refrigerant used is chosen from a drop-down list. Input values should be representative values for the refrigeration system. The input values are:

  • Compressor capacity
  • Evaporating temperature
  • Condensing temperature
  • Return gas temperature
  • No sub-cooling

The input data are limited per refrigerant according to experience and compressor application areas. Data such as these could reflect data sheet performance data at ARI 540, EN 12900, or CECOMAF conditions, or others. The list of capillary tube inner diameters typically includes available sizes from different countries. They will not all be available on one place. A length value for an available diameter size is to be chosen by the user, or estimated, if not listed. The list of refrigerants and capillary tube diameters and the calculation formulas and limits could be adapted through updates, based on new experience.

Database update 3.0 (2023):

  • R290, not modified since September 2017
  • R600a, updated in April 2018
  • R134a, not modified since September 2017
  • R1234yf, new since November 2019
  • R404A, not modified since May 2006
  • R407C, not modified since September 2017
  • R452A, new since November 2019
  • R507, not modified since September 2017
  • R513A, new since November 2019
  • R22, not modified since September 2017
  • R170, new since May 2023


The latest updates and news about Secop can be found under Updates. Stay informed about developments and milestones at Secop.