This is paragraph text. Click it or hit the Manage Text button to change the font, color, size, format, and more. To set up site-wide paragraph and title styles, go to Site Theme.

Thermistors & Thermistor Probes

This is paragraph text. Click it or hit the Manage Text button to change the font, color, size, format, and more. To set up site-wide paragraph and title styles, go to Site Theme.

This is paragraph text. Click it or hit the Manage Text button to change the font, color, size, format, and more. To set up site-wide paragraph and title styles, go to Site Theme.

Glass Body

EI Sensor Technologies offers a wide range of glass-encapsulated thermistors for precision temperature measurement and control in the most demanding environments. 

Glass Body Thermistors

EI Sensor’s PTC axial-leaded thermistors are hermetically sealed in a glass package resulting in excellent long-term stability. The ED35S series displays a nearly linear positive temperature coefficient (0.7%/°C) over its entire temperature range, ensuring highly accurate measurements. Industrial automation control, precision circuit and crystal oscillator temperature compensation and medical equipment temperature control are just some of the many applications suitable for this PTC thermistor.

Glass thermistors from EI Sensor Technologies are designed to perform reliably in environments where high accuracy and stability are crucial. These sensors are widely used in applications requiring precise temperature measurement and control, such as:


  • HVAC Systems: For monitoring and regulating air conditioning and heating systems.
  • Medical Devices: Ideal for patient monitoring equipment and diagnostic tools.
  • Industrial Equipment: Ensures precise temperature regulation in machinery and processes.
  • Appliances: Commonly used in ovens, refrigerators, and other household appliances for accurate temperature measurement and control.
  • Food Handling & Processing: Ensures safe and precise temperature management in food storage and processing environments.


Their moisture-resistant hermetically sealed glass encapsulation makes them suitable for use in harsh conditions, providing reliable performance where other sensors may fail.

Ready to Find the Perfect Glass Thermistor Solution?

Whether you need a standard glass thermistor or a custom design tailored to your unique application, EI Sensor Technologies is here to help. Contact us today to discuss your temperature sensing needs or request a quote. Let’s work together to create reliable, high-performance solutions that make your job easier.

Thermistor Probes

our collection

ED35S GLASS ENCAPSULATED
PTC THERMISTORS

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.