check the sensors that are sold with electric floor heating cable,
they are designed for this. Mounted in plastic conduit, replaceable.

On Wed, Jan 28, 2009 at 7:47 PM, Volker Soffel <volker.soffel@ucpros.com> wrote:
> I'm looking at a cheap way of embedding temperature sensors (thermistor)
> into a concrete slab. The sensors will be placed before the concrete is poured.
> I'm wondering how to best protect the sensor and the leads going to the sensor
> from chemical reactions with the concrete & moisture?
> I would welcome any suggestions & first hand experiences.
> What type of encasing would you suggest for the sensor. Sensor leads,
> what type of cable,
> cable mantel material? Should the cable be run in a conduit/ can it
> be buried directly in the concrete....
>
> best regards
> Volker
> MicroController Pros Corporation
> microcontrollershop.com
> The World's Largest Embedded Tool Selection
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