Description
Thermokon AKF10+ PT100 250.06: extra-long temperature Sensor for reliable measurement in demanding applications
The Thermokon AKF10+ PT100 250.06 temperature Sensor is a duct Sensor, immersion Sensor, and temperature probe in one compact unit. This Sensor is specially designed for precise temperature measurements in air ducts, liquid systems, and industrial environments where corrosive or aggressive media are present. All in all, the extended 250 mm stainless steel V4A Sensor sheath provides optimal insertion depth without compromising durability or installation flexibility. In addition, the passive PT100 measuring element enables easy integration into a wide range of BMS and control systems. On the other hand, the IP65 enclosure ensures reliable performance in humid, dusty, or demanding conditions.
Key features of the Thermokon AKF10+ PT100 250.06
- Wide measuring range from -50 to +160 °C for air and liquid measurements.
- Stainless steel V4A Sensor sheath (1.4571), Ø6 mm, 250 mm long for deep measurements.
- Passive PT100 Sensor according to DIN EN 60751, class B.
- Suitable for aggressive media thanks to high-quality materials.
- IP65 enclosure according to DIN EN 60529 for long-term protection against environmental influences.
Technical specifications
| Type | Duct Sensor / immersion Sensor / temperature probe |
| Sensor | PT100, class B, DIN EN 60751 |
| Sensor sheath | Stainless steel V4A (1.4571), Ø6 mm |
| Sensor tube length | 250 mm |
| Measuring range | -50…+160 °C |
| Degree of protection | IP65 according to DIN EN 60529 |
| Enclosure | PA (Polyamide), grey, with cable gland and screw cover |
| Installation | In duct or via immersion sleeve with flange |
| Connection technology | Screw terminals max. 1.5 mm² |
| Power supply | N/A – passive Sensor |
| Ambient temperature (enclosure) | -35…+70 °C |
Available variants
| AKF10+ PT100 250.06 3-wire | Duct Sensor, immersion Sensor -50..+160 °C | Passive | IP65 according to DIN EN 60529 | 652971 |
| AKF10+ PT100 250.06 4-wire | Duct Sensor, immersion Sensor -50..+160 °C | Passive | IP65 according to DIN EN 60529 Sensor sheath, Ø=6 mm, stainless steel V4A (1.4571), suitable for use in aggressive media, 250 mm | 656603 |
| AKF10+ PT100 250.06 T260 | Duct Sensor, immersion Sensor -80..+260 °C | Passive | IP65 according to DIN EN 60529 Sensor sheath, Ø=6 mm, stainless steel V4A (1.4571), suitable for use in aggressive media, 250 mm | 706681 |
| AKF10+ PT100 250.06 T260 3-wire | Duct Sensor, immersion Sensor -80..+260 °C | Passive | IP65 according to DIN EN 60529 Sensor sheath, Ø=6 mm, stainless steel V4A (1.4571), suitable for use in aggressive media, 250 mm | 756181 |
| AKF10+ PT100 250.06 T260 4-wire | Duct Sensor, immersion Sensor -80..+260 °C | Passive | IP65 according to DIN EN 60529 Sensor sheath, Ø=6 mm, stainless steel V4A (1.4571), suitable for use in aggressive media, 250 mm | 743754 |
Frequently asked questions about the Thermokon AKF10+ PT100 250.06
When is a Sensor length of 250 mm required?
Because of its extra length, this model is ideal for applications with wider air ducts or liquid pipes where deeper measurement is required.
Can this Sensor be used in chemical environments?
Yes, because the Sensor sheath is made of V4A (1.4571) stainless steel, it is resistant to aggressive gases, vapors, and liquids.
Is power supply required for the PT100 measuring element?
No, the PT100 is passive and operates via resistance measurement, so no external power supply or signal converter is required.
What installation options are available?
The Sensor can be installed directly in an air duct, as well as in piping systems via an immersion tube and flange set.
Is this Sensor suitable for outdoor use?
Yes, provided it is properly shielded. The IP65 enclosure offers protection against moisture and dust, making outdoor installation possible with additional precautions.
Do you have any questions or would you like more information? Please contact us! You can do so by phone, email, or, if you like, via the chat function.

