resistive temperature sensors

A resistive temperature sensor converts thermal changes into a measurable resistance variation, and in geotechnical work, that’s usually done with a Pt100 platinum RTD or a negative temperature coefficient thermistor. These elements are embedded in robust metal housings and connected to data loggers through armored cables. Kingmach offers both single-point sensors and multi-level strings, letting you monitor thermal profiles in boreholes, concrete pours, and earthfill dams. We pay attention to how the sensor is actually installed: cable lengths and sheath materials are selected based on the expected pressure, water ingress, and chemical exposure. Output wiring can be 2-, 3-, or 4-wire to match your readout unit, and connector types are chosen for field conditions. Because we manufacture in-house, we can adjust lead times and customize even moderate quantities without the markups typical of third-party sourcing. Common configurations meet IEC 60751 class A or B tolerance, but we can match tighter requirements if needed. Applications include mass concrete temperature monitoring, permafrost ground temperature tracking, and seepage zone detection where temperature anomalies indicate flow paths. For distributed monitoring, sensor strings can combine temperature probes with other instruments like strain gauges or pressure transducers, reducing installation complexity. Technical support covers everything from proper grouting techniques to wiring diagrams, and our logistics network can deliver to project sites in Asia, Europe, and the Americas. When you inherit a site full of irregular boreholes or a tight schedule, having a supplier who builds sensors around your constraints rather than the other way around makes a noticeable difference.