• Quick, accurate measurement of high and low pressure with two temperature-compensated pressure sensors; automatic detection of evaporating and condensing temperature
• Two temperature inputs for attachable temperature probes for the simultaneous calculation of superheating and subcooling: you can therefore do away with manual calculations, which are prone to error, and get a reliable result straight away
• Two clamp temperature probes included in the delivery: when clamped directly onto the cables, these enable reliable measurement of the surface temperature
• No need to switch over refrigerant hoses: thanks to automatic heat pump mode
• 60 refrigerants stored in the instrument: just one instrument covers all the most important refrigerants and, depending on the refrigerant, you don't need different manifolds (refrigerant update possible via app)

Right app for the instrument: connect the manifold to your smartphone/tablet!

• Remote monitoring of the measurement: you can track the measurement from your smartphone/tablet, so there's no need for you to stay right next to the manifold; coverage of up to 20 m where there are no obstructions (at the very least)
• Measurement data display on your smartphone/tablet: you can follow the measurement in numerical form and as a graphical progress display on your smartphone/tablet – really practical if you are configuring the system at the same time
• Useful documentation functions: use the app to store measurement results (in pdf or csv format) and also send them directly via e-mail. If you have taken a photo of the measuring location using your smartphone/tablet, you can also insert this into the documentation
• Refrigerant update: use the app to carry out refrigerant updates in order to ensure that your digital manifold is kept up to date at all times regarding its refrigerants, or to adapt the list of refrigerants to suit your requirements

Digital manifold: sturdy, simple and practical

testo 550 digital 2-way manifold including two clamp temperature probes, transport case, calibration protocol, batteries and app (can be downloaded).

State-of-the-art technology, really easy work: the digital manifold kit in detail

• Quick, precise measurement of high and low pressure: two temperature-compensated pressure sensors make this possible and automatically calculate the theoretical evaporation and condensation temperature
• Simultaneous calculation of superheating and subcooling possible: do away with manual calculations, which are time-consuming and where errors often creep in
• Including 4 filling tubes, each 1.5 m long: 3 tubes (blue, red, yellow) with 7/16‘‘ UNF (straight and 45° angle), 55/275 bar, 1 tube (yellow) with 5/8‘‘ UNF, 40/205 bar (straight and 45° angle), suitable for all refrigerants
• Precise external Pirani gauge for vacuum measurement: you get a high-precision Pirani gauge with the digital manifold, enabling you to carry out accurate vacuum measurement and making it easier to evacuate refrigeration systems and heat pumps
• Two clamp temperature probes included in the scope of delivery: clamp them to the pipes to reliably measure the surface temperature
• No need to switch over refrigerant hoses: switching is superfluous thanks to automatic heat pump mode
• Can be used for 60 current refrigerants: 60 refrigerants are stored in the manifold, which you can update if necessary via the smartphone/tablet App and adapt to suit your requirements

Manifold with practical App: connect the measuring instrument to your smartphone/tablet!

• Remote monitoring of the measurement: you don't need to stay right next to the manifold during the measurement, instead you can monitor the measurement from a distance via your smartphone/tablet; coverage of up to 20 m with no obstructions (at least)
• Measurement data display on your smartphone/tablet: your smartphone/tablet displays the readings for you while the measurement is ongoing – really helpful when you are making system settings at the same time
• Practical documentation functions: save your measurement results (in pdf or csv format) and send them directly by e-mail if required. Where applicable, the photos that you took at the measuring location can be appropriately inserted into the documentation using the App
• Refrigerant update: to ensure that the refrigerants in your digital manifold always remain up to date, you can use the App to carry out a refrigerant update

Innovative technology robustly packaged

• testo 557 digital 4-way manifold, including set of 4 filling tubes, batteries (4 x AA) and calibration protocol
• 2 x clamp temperature probes (0613 5506)
• Precise external Pirani gauge for vacuum measurement
• Transport case (0516 0012)
• App (free download)