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Data Sheet PDF | Instruction Manual PDF
Description
The Testo 549i is an industry-grade wireless high-pressure gauge engineered for hose-free, high-precision diagnostics and routine service on air conditioning and refrigeration systems. This compact smart probe connects directly to the system pressure port, completely eliminating refrigerant loss and reducing potential leak pathways. It transfers absolute real-time measurements via a long-range Bluetooth connection to the Testo Smart App, which automatically calculates critical thermodynamic values such as evaporation and condensation temperatures. Protected by a ruggedized composite housing, this tool ensures precise data logging and documentation for field service teams.
B2B Applications
- Hose-Free AC Maintenance: Attaching directly to pressure connections during air conditioning service to calculate system lines without standard charging hoses.
- Refrigeration Troubleshooting: Long-distance diagnostic logging at service points up to 100 m apart to map system performance profiles.
- Comprehensive Thermodynamic Auditing: Working in combination with the Testo 115i clamp thermometer to track subcooling and superheating parameters simultaneously.
Technical Parameters
| Pressure Measuring Range | -1 to +60 bar |
| Measurement Accuracy | ±0.5 % of fsv |
| Resolution Scale | 0.01 bar |
| Connection Thread Port | 7/16" - UNF |
| Maximum Overload Limit | +65 bar |
| Wireless Range and Interface | Bluetooth (Signal transmission up to 100 m) |
Package Contents
- Testo 549i app-controlled wireless high-pressure gauge
- 3 x AAA micro batteries
- Factory calibration certificate