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 +1-408-776-7992 Phone +1-215-243-6071 Fax -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist