What Is A Glass Level Electrode?
A glass level electrode (GLE), also known as a platinum glass level sensor, is a specialised sensor used to measure the level of molten glass in hostile and high-temperature areas of the forehearth during glass manufacturing processes. It functions by making contact with the glass surface, completing an electrical circuit, and generating a signal.

The Role of Glass Level Sensors in Precision Manufacturing
In the glass-making industry, particularly in container glass tanks, maintaining an accurate glass level is critical for efficient production. A glass level electrode ensures precise control of the molten glass by detecting and monitoring its level within the furnace. This measurement is vital for optimising processes, reducing waste, and maintaining product quality.
How Does a Glass Level Electrode Work?
The glass level electrode working principle revolves around the interaction between its platinum tip and the molten glass. As the platinum pin touches the glass, it creates a complete electrical circuit. The resulting signal enables manufacturers to monitor the delicate glass level in real-time, providing unmatched accuracy.
Advantages of Peak Sensors’ Glass Level Electrodes
At Peak Sensors, we take pride in our innovative approach to manufacturing glass level sensors. Our assemblies are:
- Reliable: Built to perform in harsh, high-temperature environments.
- Cost-Effective: Designed to reduce maintenance downtime.
- Accurate: Ensuring precision in glass level measurement.
- Customisable: We construct glass level electrodes tailored to your specifications or drawings.
Construction of Glass Melting Electrodes
Most glass melting electrodes consist of an alumina tube with an extruded platinum element at the tip. At Peak Sensors, we construct all our rare metal assemblies in cleanroom environments to ensure the highest levels of precision and durability. This meticulous process guarantees that our sensors deliver superior performance in demanding applications.
Uses of Glass Electrodes in Glass Manufacturing
Monitoring glass levels in forehearths.
Regulating molten glass levels in container glass tanks.
Ensuring temperature consistency during glass blowing processes.
Why Choose Platinum for Glass Level Measurement?
The choice of platinum for electrode level sensors stems from its exceptional resistance to high temperatures and corrosive environments. This makes it an ideal material for glass blowing temperature sensors and other glass manufacturing applications.
Contact Peak Sensors for Your Glass Level Electrode Needs
Whether you’re looking for a standard solution or a customised design, Peak Sensors has the expertise to deliver the right product for your needs. With decades of experience, we specialise in creating durable and accurate glass level electrodes that meet the challenges of modern glass manufacturing.
If you want to order a temperature sensor or you are unsure exactly what you need, get in touch and we can help you.