Surface Temperature Probes

In the temperature range from -40 to 85 °C we recommend our special pipe surface probe ICSkin. Thanks to its dedicated shape, it fits snugly against the pipe and is easy to attach with a cable tie or clamp. Condensation and freezing cycles cannot harm the sensor (protection class IP67).

Between 85 and 105 °C, our overmoulded cable probe with surface adapter is a good solution.

For higher temperatures, we recommend our mineral-insulated sheath resistance thermometers. They are extremely robust (protection class IP67). Our adapters, optionally for flat surfaces or for pipe surfaces, guarantee good heat transfer and easy installation. You won’t find a more robust contact sensor anywhere!

If you value high accuracy in a comparatively wide temperature range, a Pt100 or a Pt1000 can be a good choice. Depending on the cable length, a three- or four-wire circuit may be necessary. NTCs are more suitable for smaller temperature windows, but are usually cheaper.

We will be happy to advise you on your choice. Contact us now!

With a contact sensor you measure a surface temperature – which comes with certain advantages, but a few disadvantages as well:

On the plus side, you don’t have to open any process connection and you can measure the temperature without affecting the pressure conditions and the flow in a pipe.

But on the other hand you don’t measure the temperature of the medium inside the pipe, but the temperature of the pipe itself. Also, response times are noticeably longer with such measurements than with a threaded probe or a duct probe, for example.

So if you have particularly high requirements for accuracy or response time – and your application allows it – a mineral insulated probe or a threaded sensor can be a good alternative.

Regarding the response time of a sensor, the following rule of thumb applies: If you double the diameter, you quadruple the response time. So choose the diameter wisely!

As with all temperature sensors, the immersion length should be at least 5x the diameter of the sensor to avoid thermal bridges.