Testo 915i Thermometer Smart Probe
The Testo 915i Thermometer Smart Probe is a rapid-response wireless instrument compatible with a range of professional Testo type K thermocouple probes. Due to this large selection of probes the 915i is ideally suited for a wide array of applications such as measuring ambient temperature or temperature in ducts or at air outlets. Choose between immersion, surface, air, and flexible probe heads all with a high measuring accuracy of ±1.0 °C thanks to system calibration ex-works.
One of the most important features of the 915i Thermometer Smart Probe is the innovative locking mechanism within the handle, which ensures probes are securely attached before use. The handle itself is both robust and ergonomically designed, specifically built for enhanced portability and versatility.
The free Testo Smart App, compatible with the 915i Smart Probe, facilitates intuitive operation, evaluation and documentation. Utilise this intelligent app to display readings, construct clear graphical presentations of temperature curves or create and send documentation (PDF or CSV) all whilst still on-site. An automatic Bluetooth connection functions within 100m of smartphones, tablets or Testo measuring instruments such as the Testo 400 and 550s series.
Choice of Probe Heads
Available with various Class 1 plug-in probes, the Testo 915i comes supplied with either an immersion/penetration probe, surface probe, air probe, flexible probe or as a kit with three temperatures probes in a Smart Case. Reliable in any condition, this Thermometer Smart Probe has proven quality and excellent durability.
| Probe Type |
Measuring Range |
System Accuracy* |
Probe Accuracy |
Response Time |
| Flexible probe, TC Type K |
-50 to +400 °C |
±1.0 °C (-30 to +80 °C) ±(0.7°C + 1% of measured value) (-50 to -30 °C) ±(0.2 °C + 1 % of measured value) (+80 to +400°C) |
Class 1** |
3 sec |
| Air probe, TC Type K |
-50 to +400 °C |
±1.0 °C (-50 to +100 °C) ±1 % of measured value (remaining meas. range) |
Class 1** |
60 sec |
| Immersion/penetration probe, TC Type K |
-50 to +400 °C |
±1.0 °C (-50 to +100 °C) ±1 % of measured value (remaining meas. range) |
Class 1** |
3 sec |
| Surface probe, TC Type K |
-50 to +350 °C |
±(1.0 °C +1 % of m.v.) |
Class 1** |
3 sec |
* System accuracy Testo 915i handle and standard probes Testo 915i
** According to standard EN 60584-2, the accuracy of Class 1 refers to -40 to +1000 °C (Type K)
Testo Smart App
The Testo 915i is compatible with the Testo Smart App which is a free to download App on iOS and Android, suitable for use in all refrigeration, air conditioning, heating and ventilation applications. Users are able to operate, measure and document test results when using the Smart App alongside all compatible Testo Bluetooth enabled measuring instruments. Pro measurement programs air balancing and multi site measurements allow numerous sites to be managed simultaneously.
The App is easy to use thanks to the intuitive measurement menus with quick configuration and uncomplicated documentation design. All measurements are quickly viewable in just a few clicks with graphic and tabular curve displayed. Test measurements and customer data can be stored on the app, with reports easily generated and dispatched to customers and colleagues direct from the App.
The Testo Smart app is free to download and free to use, and is always up to date thanks to continuous updates and extensions from Testo. Data exchange is also available with the Testo PC software DataControl.