Trim these probes to the exact length you need with a pipe cutter. They’re a good choice if you need a perfect fit in a thermowell. Plus, if a probe breaks, you can cut one of these to the same length and replace it right away. Made of stainless steel, they resist corroding from liquids and gases. The stainless steel also shields the sensor from impact, so you can use them with solids, such as in molds and dies.

To view and store measurements, add a connector to the wire leads and connect these probes to a controller, thermometer, or other temperature-reading device. You can also attach thermocouple wire to the wire leads if you need to extend the probe’s reach. Pick the thermocouple type that best covers the temperature range you expect your liquid, gas, or solid to be. You should also make sure the thermocouple type you choose is compatible with the device you connect it to.

These thermocouples are manufactured to conform to ASTM E230 for accuracy. Accuracy is how far off the reported value is from the actual temperature.

Note: When installing probes with wire leads, the red wire is negative.