The testo 552 is a digital vacuum measuring instrument for the evacuation of refrigeration systems and heat pumps. It measures even the smallest absolute pressures and provides highly precise information on the status of the dehumidification of a system (removal of foreign substances, incl. oils or foreign gases). Its robust construction makes it suitable for daily use, and protects from dirt and water.
In addition to the above, the new version of the testo 552 connects via Bluetooth with the testo Smart Probes App on your smartphone or tablet. This allows you to monitor the absolute pressure reached during the evacuation and measurement results are documented in the App and sent by e-mail report.
Vacuum measuring range : 0 to +26.66 mbar / 0 to 20000 microns
Sensor overload absolute : 6 bar / 87 psi (relative: 5 bar / 72 psi)
Vacuum resolution : 0.01 hPa / 10 micron
Vacuum precision : 0 to 1.33 hPa / 0 to 1000 micron: up to ±10 micron
0 to 200 hPa / 0 to 150000 micron: ± 0.3% FS = ±0.6 hPA
200 to 1100 hPa / 150000 to 825080 micron: ±0.3% FS = ±3.3 hPa
Parameter : mmHg, Torr, mbar, hPa, micron, inH20, inHg, Pa
Sensors : 1 x absolute pressure sensor
Battery life : 50 hrs (without Bluetooth/backlighting)
Connections : 2 x ¼” SAE / 1x MiniDin (testo 570)