The Testo 557 4-valve with 3/8 vacuum port digital manifold comes with a remote vacuum probe for faster and more reliable evacuations, Bluetooth App, two clamp temperature probes for instantaneous superheat / sub-cooling readings, and convenient service case.
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The Testo 557 4-valve with 3/8 vacuum port digital manifold comes with a remote vacuum probe for faster and more reliable evacuations, Bluetooth App, two clamp temperature probes for instantaneous superheat / sub-cooling readings, and convenient service case. NO SIGHT GLASS
The testo 557 digital 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. An external vacuum probe provides fast and more reliable evacuation of the system. The wireless Bluetooth / App allows you to view measurement data on your Smartphone or Tablet, enabling you to quickly and conveniently complete and document your job. Then, be able to finalize the documentation and send the reports and invoice via email, right from the job site. In addition to the 60 refrigerant profiles stored in the instrument, the App can also be used to download new refrigerants from the Internet directly into the digital manifold.
Testo 557 kit, digital manifold with Bluetooth / App; including 2 x NTC temperature clamp probes, external vacuum probe, batteries, case, certificate of conformity, and user's manual.
-58° to 302 °F / -50 to +150 °C
±0.9 °F / ±0.5 °C
0.1 °F / 0.1 °C
2 x Plug-in (NTC)
-14 to 870 psi / -1 to 60 bar
±0.5 % Fs
0.10 psi / 0.01 bar
3 x 7/16" – UNF + 1 x 5/8'' – UNF
Overload rel. (high pressure)
943 psi / 65 bar
0 to 20000 micron (measurement)
± (10 micron + 10 % of mv) (100 to 1000 micron)
1 micron (0 to 1000 micron)
250 h (without illumination, without Bluetooth®, without vacuum probe)
Refrigerants in instrument
R1234ze; update via App; R420A; R508B; R424A; R507; R11; R422A; R404A; Ra11A; R417A; R407B; R22; R422C; R290; R402B; R14; R123; R718 (H₂O); R401B; R134a; R407D; R409A; R412A; R422B; R152A; R401C; R407A; R12; R437A; R407C; R410A; R421B; R1234yf; R407F; R414B; R503; R416A; R422D; R13B1; R508A; R125; R744 (CO₂); R161; R401A; R502; R434A; R402A; R427A; R600a; R23; 60 profiles:; R413A; R32; R600; R438A; R406A; R408A; R142B; R227; R426A; R421A
requires iOS 7.1 or newer; requires Android 4.3 or newer; requires mobile end device with Bluetooth 4.0
-4° to 140 °F / -20 to +60 °C
42 oz. / 1200 g
9 x 5 x 3 in. / 220 x 125 x 70 mm
-4° to 122 °F / -20 to +50 °C
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