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Description
Fast-Action Surface Probe (TC Type K)
The fast-action surface probe (Type K thermocouple) is engineered to deliver rapid and highly precise temperature measurements, even on difficult, uneven surfaces. The secret lies in its unique sprung thermocouple strip, which ensures optimal thermal contact and a lightning-fast response time of just 3 seconds, making it a favorite among HVAC and industrial maintenance professionals.

Your Advantages
- Extremely Fast Response: Get stable, accurate readings in just 3 seconds (t₉₉) thanks to the exposed thermocouple strip.
- Uneven Surface Master: The sprung, flexible sensor head conforms to the shape of pipes, valves, and rough materials to guarantee a true reading.
- Wide Measuring Range: Dependably measures from -60 °C to +300 °C, with short-term burst capabilities up to +500 °C.
- Universal Connection: Standard Type K thermocouple plug fits a massive variety of Testo measuring instruments.
What It's For & Who It's For
Applications (What It's For)
This probe is a true multi-tasker. It is highly effective for detecting thermal bridges in walls, maintaining and checking industrial machinery, monitoring active production processes, and adjusting complex heating networks like radiators, pipes, and boiler systems.
Who It's For
Designed specifically for commercial HVAC technicians, facilities maintenance engineers, industrial process auditors, and building inspectors who need immediate results without waiting for rigid probes to slowly equalize to the target temperature.
Tradie Pro Tip: If you are auditing old, painted radiators or corroded boiler pipes, standard solid-tip probes will give you completely inaccurate readings because they can't sit flat against the surface. The flexible metal strip on this probe physically presses down and molds against those curved, ugly surfaces, giving you a perfect reading in 3 seconds flat.
Delivery Scope
1 x Fast-action surface temperature probe (TC Type K) with sprung thermocouple strip and 1.2 m fixed cable (Product no. 0602 0393).
Technical Data
| Parameter | Specifications |
|---|---|
| Temperature - TC Type K | |
| Measuring range | -60 to +300 °C (Short-term up to +500 °C) |
| Accuracy | Class 2 |
| Reaction time | t₉₉ = 3 s |
| General Technical Data | |
| Probe shaft length | 115 mm |
| Probe shaft tip length | 39 mm |
| Diameter probe shaft | 5 mm |
| Diameter probe shaft tip | 12 mm |
| Cable length | 1.2 m |
| Weight | 126 g |
| Connection | Plug-in thermocouple Type K |


















