The testo 557 digital manifold fulfils numerous functions, which are required for working on refrigeration systems and heat pumps, in just one instrument: for example superheating/subcooling calculation, vacuum measurement, temperature-compensated leakage test. You can also use a practical app to monitor the manifold via your smartphone/tablet and store the measurement results or send them by e-mail.

  • Calculation of superheating and subcooling in real time: no manual calculation, which is prone to error

  • Connect to smartphone/tablet app: remote monitoring and smart measurement documentation

  • Precise external Pirani gauge for vacuum measurement, temperature-compensated leakage test, automatic ambient pressure measurement

  • The 60 most common refrigerants are stored in the instrument, subsequent updates possible (via app)

This item comes either without hoses or as a kit with a set of 4 hoses. 

Testo 557 Digital Manifold