testo 557

Data sheet

Measures high side / low side pressures and temperatures

Simultaneous, real-time super heat and sub-cooling

External vacuum probe for faster and more reliable

evacuation of the system

App integration via Bluetooth for fast and convenient

remote monitoring and reporting via email

Refrigerant updates to the instrument via App

60 on board refrigerant profiles

4-way valve block with 1/4 in. and 3/8 in. ports

3 year warranty with registration

testo 557 – with external vacuum

and Bluetooth

The testo 557 Digital Manifold opens up new possibilities

for efficient analysis and documentation thanks to the

integration of Bluetooth connectivity with the testo

Refrigeration App. You can clearly read measurement

data, such as automatic calculations of superheat, sub-

cool and vacuum readings, on a Smartphone or Tablet,

allowing you to work more quickly and conveniently than

ever before. In addition, measurement reports can be

created and sent directly from the job site.

The 557 features an external vacuum probe for faster

and more reliable evacuations and is suitable for all

refrigeration systems or heat pumps. This compact

manifold has a 4-way valve block, large backlit display

and sight glass. Two NTC thermistor clamp probes

provide superior accuracy of simultaneous, real-time

superheat and sub-cooling readings. With an optional 4

hose kit, the testo 557 is the complete solution for any

air conditioning job you can throw at it.

micron

Digital manifold

bar

Leak

Test

Super

heat

Sub-

cooling

psi/

°F/°C

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