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Feature
Accuracy (nominal
temperature 22 °C/71.6 °F)
Intelligent logging function
Measurable media
Ambient conditions
Housing
IP class
Value
Pressure: ±0.25% of full scale value (±1 digit)
Temperature (-50 to 150 °C): ±0.5 °C (±1 digit),
±0.9 °F (±1 digit),
testo 115i temperature: ±2.3 °F (-4 to 185 °F) /
±1.3 °C (-20 to +85 °C),
Vacuum: ±(10 microns + 10% of m.v.) (100 to
1000 microns)
- Logging duration time: 1 ... 72 hours.
- Measurement cycle: 1 ... 60 s.
- Intelligent logging data: App read logging
data in fast way via BLE (25 s in typical use
case)
- Very accurate logging timestamp:
≤ 5 s/72 hours @ -20 ... 50 °C
Measurable media: all media that are stored in
the testo 557. Not measurable: ammonia
(R717) and other refrigerants which contain
ammonia.
Operating temperature: -20 to 50 °C / -4 to
122 °F
-10 to 50 °C / 14 to 122 °F (vacuum)
Storage temperature: -20 to 60 °C / -4 to
140 °F
Humidity application range: 10 to 90 %RH
Material: ABS/PA/TPE
Dimensions: approx. 235 x 121 x 80 mm
Weight: 930 g (without batteries)
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10 Technical data
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