TESTO 550i - Target Superheat Calculation

8 Using the product
21
• When max. permissible pressure of 60 bar (870 psi is exceeded).
8.4.3 Target superheat
This feature allows the testo 550i manifold to calculate the target superheat in
conjunction with the App and additional testo 605i Smart Probes. This
application can only be used for split air conditioning systems/heat pumps with a
fixed expansion valve. The two connected testo 605i Smart Probes determine
the ODDB and RAWB values. As a result, the target superheat appears in the
App.
If 605i Smart Probes are note connected, This can be manually set. It is
recommended to use 605i Smart Probes for accurate measurements.
The following are used for the measurement:
• testo 115i (clamp thermometer)
• testo 605i
Before each measurement, check that the refrigerant hoses are in
flawless condition.
Before each measurement, zero the pressure sensors.
WARNING
The measuring instrument being dropped or any other comparable mechanical
stress may cause breakage of the pipe pieces in the refrigerant hoses. The
valve positioners may also suffer damage, causing further damage inside the
measuring instrument that is not necessarily visible externally!
> For your own safety, return the measuring instrument to the Testo Customer
Service for technical inspection.
> Therefore, always replace the refrigerant hoses with new ones after the
measuring instrument is dropped or after any comparable mechanical stress.
1
Click on Measure.
2
Click on Target superheat.

The Target superheat measurement menu opens.
3
Click on .

Configuration menu opens.