Technical Data
Temperature
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Measuring range -50 to +150 °C
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Accuracy ±0.5 °C (±1 Digit)
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Resolution 0.1 °C
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Probe connection 3 x Plug-in (NTC)
Pressure Measurement
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Measuring range 50 bar
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Accuracy ±0.5 % fs (±1 Digit)
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Resolution 0.01 bar / 0.1 psi
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Probe connection 3 x 7/16" – UNF + 1 x 5/8'' – UNF
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Overload rel. (low pressure) 52 bar
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Overload rel. (high pressure) 52 bar
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Low pressure rel. 50 bar
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High pressure rel. 50 bar
Vacuum Measurement
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Measuring range -1 to 0 bar
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Accuracy 1 % fs
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Resolution 1 hPa / 1 mbar / 500 micron
General Technical Data
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Protection class IP42
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Battery life approx. 40 h (w/o illumination)
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Dimensions 288 x 135 x 75 mm
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Display type LCD
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Operating temperature -20 to +50 °C
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Pressure media CFC; HFC; N; H₂O; CO₂
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Refrigerants in instrument R409A; R413A; R417A; R406A; R401B; R427A; R503; R408A; R290; R1234yf (display: T8 for Testo 557) refrigerant update possible by customer (via "EasyKool" software); R410A; R416A; R22; R402B; R407A; R744 (only in the permitted measurement range up to 50 bar); R401A; R502; R438A; R507; R434A; R123; R718 (H₂O); R422A; R422B; R437A; R422D; R402A; R134a; R407C; R227; R12; R424A; R420A; R414B; R421B; R421A; R600a; R600; R404A; Ra11A
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Storage temperature -20 to +60 °C
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Weight 1200 g