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Datasheet | Brochure | Instruction Manual
Testo 922 Digital Differential Temperature Measuring Instrument with App Connection
The compact Testo 922 differential temperature measuring instrument is a versatile, high-precision dual-channel solution engineered for fast and accurate delta-T logging across commercial trades and industrial engineering operations. Designed around a robust dual-channel TC Type K thermocouple architecture, the package includes two Class 1 standard thermocouple probes to deliver direct calculation of differential temperature over an extended scale from -50 °C up to 1000 °C. Equipped with integrated Bluetooth connectivity, the device syncs seamlessly with the Testo Smart App on your mobile terminal. This allows for real-time digital configuration, graphical graph history trends, customer site management, and professional PDF/Excel reporting directly on site.
Industrial Applications
- HVAC and Climate Maintenance: Precise parallel testing of supply and return temperatures across heating circuit manifolds and industrial cooling networks.
- Industrial Process Monitoring: Rapid thermal delta checks of active fluids, input/output logistics assets, and chemical manufacturing pipelines.
- Facility and Operations Inspection: Continuous on-site quality diagnostics of multi-point machinery heat profiles and structural heat barriers.
Technical Characteristics
| Thermocouple Sensor Input | 2 Channels for TC Type K (NiCr-Ni) probes; highly compatible with standard commercial sensors |
| Measuring Thermal Range | Wide deployment span from -50 to +1000 °C |
| Instrument Accuracy Matrix | ±(0.5 °C + 0.3% of measured value) (Excludes standalone probe tolerance variations) |
| Scaling Resolution Matrix | 0.1 °C (-50.0 to +499.9 °C); 1 °C for the remaining operating scale |
| Data Connectivity Platform | Integrated Bluetooth wireless synchronization for mobile devices and tablets |
| Smart Application System | Full data tracking via free Testo Smart App (Supports second screen mode, graph logging, and email dispatch) |
| Physical Ingress Rating | IP20 (Upgradable to IP40 with connected sensor; matches IP65 protection class limits with TopSafe) |
| Power Structure & Batteries | Powered by 3x AA batteries providing up to 120 hours of independent field lifecycle |
| Housing Construction Shell | Durable ABS + PC / TPE blend protective shell; 135 x 60 x 28 mm size; weight 191 g |
Package Contents
- Testo 922 dual-channel digital differential thermometer
- 2 flexible TC Type K thermocouple probes (Class 1)
- 3 standard AA batteries for immediate outfield tool launch
- Official factory calibration protocol validation documentation