A Reliable, Cost-Effective Solution for Accurate Gas Monitoring
If you’re looking for dependable gas detection without the complexity or cost of high-end analytical systems, HMOS sensors are one of the smartest choices available today. Built on proven Heated Metal Oxide Semiconductor technology, these sensors deliver fast, accurate, and long-lasting performance—making them ideal for a wide range of monitoring and safety applications.
Why Customers Choose HMOS Sensors
Exceptional durability
HMOS sensors are designed to thrive in real-world conditions. With no fragile parts or consumables, they offer long service life and minimal maintenance.
Quick, responsive performance
When conditions change, HMOS sensors react in seconds, providing near-instant data you can trust. This makes them perfect for facilities where real-time awareness matters.
Outstanding sensitivity at low levels
Even trace gas concentrations can be detected reliably, helping you maintain compliance, protect equipment, and ensure a healthier environment.
Confidence in challenging environments
Their heated sensing element stays stable across humidity swings, temperature fluctuations, and industrial conditions where other sensors struggle.
Ideal for a Wide Range of Applications
HMOS sensors are a great fit for:
- Continuous indoor or ambient air monitoring
- Industrial and equipment rooms
- Safety and alarm systems
- Long-term monitoring programs
- Cost-conscious installations where reliability still matters
- Environments with variable temperature or humidity
Whether you’re monitoring a single room or a large facility, HMOS technology provides performance you can count on.
A Smart Alternative to Complex Analyzers
If you don’t need a laboratory-grade instrument—but still want accuracy, responsiveness, and dependable results—HMOS sensors hit the sweet spot. They offer excellent performance without the high costs, consumables, or upkeep of advanced systems.
How it Works
In heated metal oxide sensors a metal substrate is heated which allows it to become very sensitive to ozone gas. An electrical current passes through the metal substrate. The resistance of the current changes according to the mount of gas present. The sensor outputs the resistance in ppm or ppb.
There are several kinds of HMOS sensors on the market. Different metals and temperature management can have a significant impact on the overall performance of the sensor. Aeroqual’s proprietary technology is branded GSS (gas sensitive semiconductor) to distinguish it from other HMOS available.
HMOS sensors detect ozone based on changes in the electrical resistance of a heated semiconductor metal oxide surface when it interacts with ozone and other oxidizing gases.
Compare O3 Sensor Technologies
We offer additional gas detection products in partnership with our subsidiary, Gas Sensing. Visit their website HERE.
The Bottom Line: Dependable Performance, Great Value
HMOS sensors deliver a powerful combination of accuracy, durability, and affordability. If you’re searching for a gas monitoring solution that performs reliably day after day, HMOS technology is a proven choice trusted across industries.
General Calibration Information
All Gas Sensors will require periodic calibration to ensure your gas measurements are accurate and correct. Different gasses, and sensor manufacturers will have differing requirements and methods for calibration. This page will serve to provide general calibration information and links to specific calibration procedures from the sensor manufacturers we represent.
Should you have any questions about sensor calibration, or would like us to help you with your calibrations please contact us.