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testo 557 Digital Manifold Set

Part Number : 0563 1557

Product Description:
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.

Key Benefits:

  • 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)

Delivery Scope:

testo 557 digital 4-way manifold including two clamp temperature probes, precise external Pirani gauge for vacuum measurement, transport case, calibration protocol, batteries and app (can be downloaded). 
*** Send your inquiry to get the final prices.  

testo 557 Digital Manifold Set

Technical Data:
  • Measuring range: -50 to +150 °C
  • Accuracy: ±0.5 °C
  • Resolution: 0.1 °C
  • Probe connection: 2 x Plug-in (NTC)
Pressure Measurement
  • Measuring range: -1 to 60 bar
  • Accuracy: ±0.5 % fs
  • Resolution: 0.01 bar
  • Probe connection: 3 x 7/16" – UNF + 1 x 5/8'' – UNF
  • Overload rel. (high pressure): 65 bar
Vacuum Measurement
  • Measuring range: 0 to 20000 micron
  • Accuracy: ± (10 micron + 10 % of mv) (100 to 1000 micron)
  • Resolution:
1 micron (0 to 1000 micron)
10 micron (1000 to 2000 micron)
100 micron (2000 to 5000 micron)
500 micron (5000 to 10000 micron)
5000 micron (10000 to 20000 micron)
General Technical Data
  • Dimensions: 220 x 125 x 70 mm
  • Operating temperature: -20 to +50 °C
  • Protection class: IP42
  • Warranty: 2 years
  • Battery life: 250 h (without illumination, without Bluetooth®, without vacuum probe)
  • Pressure media: CFC
  • Refrigerants in instrument: 60 profiles:; R11; R12; R123; R1234yf; R1234ze; R125; R13B1; R134a; R14; R142B; R152A; R161; R22; R227; R23; R290; R32; R401A; R401B; R401C; R402A; R402B; R404A; R406A; R407A; R407B; R407C; R407D; R407F; R408A; R409A; R410A; Ra11A; R412A; R413A; R414B; R416A; R417A; R420A; R421A; R421B; R422A; R422B; R422C; R422D; R424A; R426A; R427A; R434A; R437A; R438A; R502; R503; R507; R508A; R508B; R600; R600a; R744 (CO₂); R718 (H₂O); update via App
  • System requirements: requires iOS 7.1 or newer; requires Android 4.3 or newer; requires mobile end device with Bluetooth 4.0
  • Storage temperature: -20 to +60 °C
  • Weight: 1200 g

testo 557 Digital Manifold Set

Area of Application:
Are you primarily entrusted with the commissioning or maintenance of refrigeration systems or heat pumps? If so, the testo 557 is the ideal digital manifold for you: like the testo 550, this digital manifold replaces multiple tools in the refrigeration industry and can be connected to a practical app. As well as the features of the testo 550 manifold, the testo 557 offers a high-precision external Pirani gauge for vacuum measurement: this enables the quick, safe evacuation of refrigeration systems and heat pumps. 

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Product Brochures

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Instruction Manuals


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