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Thermistors & Thermistor Probes

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Industrial temperature sensors

Built for performance in demanding environments, our industrial temperature sensors offer reliable measurement in applications exposed to heat, vibration, moisture, and more. Whether you're monitoring process equipment, automation systems, or heavy machinery, our sensors provide the accuracy and durability your operation depends on.

Our Industrial Sensing Solutions

Our industrial sensing solutions are engineered for reliability in rugged environments, delivering accurate temperature data to keep your operations running smoothly.

Thermistors

Our thermistors provide fast, precise temperature measurement with high sensitivity and stability. Ideal for tight-tolerance applications, they’re available in a variety of resistance values and configurations.

Thermistor Probes

Designed for easy integration, our thermistor probes combine accurate sensing with durable housings. They're well-suited for surface, air, or fluid temperature monitoring across many industries.

RTD Sensors

RTD sensors offer excellent linearity and long-term stability, making them ideal for critical applications that demand consistent, repeatable results. We offer a range of elements and resistance values to fit your exact needs.

RTD Probes

Built for rugged use, our RTD probes deliver precise measurements in industrial and commercial environments. Choose from standard or custom probe designs for seamless system integration.

Custom Sensors

When off-the-shelf solutions fall short, we collaborate to develop custom sensors tailored to your application's specifications. From unique form factors to specific electrical characteristics, our custom builds deliver performance without compromise.

Temperature Sensing Insights

A red bead is on a silver wire on a white background.

PTC Thermistors, What They Are and How They Work

By EI Sensor • July 24, 2025
Learn what PTC thermistors are, how they work, and their key applications in temperature sensing, overcurrent protection, and industrial control systems.
A bunch of different types of sensors on a table

What is a Thermistor?

By EI Sensor • July 24, 2025
Thermistors are THERMally sensitive resISTORS whose electrical resistance varies predictably with their body temperature, making them ideal tools for monitoring and controlling temperature in numerous applications including household and industrial products.
A group of three different colored electronic components on a white surface.

Types of Temperature Sensors

June 2, 2025
Temperature sensors measure and quantify temperature in materials and internal or external environments.
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Using the highest quality materials, state of the art equipment and proprietary production techniques, EI Sensor is dedicated to producing a temperature sensor that meets or exceeds our customers’ requirements. With a strong commitment to quality, continuous improvement is necessary. Our team continues to invest in research and development of new processes as well as enhancing existing processes that will result in a precise, efficient, cost effective thermistor, RTD or temperature probe assembly.