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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

Designed specifically for performance in demanding environments, our sensors ensure reliable measurement in applications where exposure to heat, vibration, moisture, and other challenging conditions is a concern. Whether your focus is on monitoring process equipment, automation systems, or heavy machinery, our sensors guarantee the accuracy and durability essential for the success of your operations.

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

Hand connecting wires to an outdoor electrical junction box on a stone wall

How Thermistors Help Prevent Thermal Runaway

By Teri Wilfong • October 28, 2026
Learn how thermistors help prevent thermal runaway through early temperature detection, reliable monitoring, and overheat protection in batteries and electronic systems.
Hand holding a digital pressure gauge reading 31.4 BAR in an industrial control panel area

Managing Thermal Lag in Fast-Response Applications

October 21, 2026
Learn how to reduce thermal lag in fast-response temperature sensing with insights on sensor design, probe materials, placement, and custom thermistor and RTD solutions.
Hands holding an orange handheld instrument with a keypad and screen in a lab setting

What is a Thermocouple?

September 21, 2026
Learn what a thermocouple is, how it works, common thermocouple types, applications, and how thermocouples compare to thermistors and RTDs.

partner with ei sensor

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.