Hydrogen H2

Aeroqual designs and delivers handheld and indoor air quality monitors that measure hydrogen (H2).

Here we cover hydrogen measurement principles and specifications.

Overview of hydrogen

Hydrogen gas is used in several industrial processes including in the petroleum and chemical industries. Hydrogen gas can be hazardous to human safety as it is highly flammable when mixed with air. Hydrogen is odorless, tasteless, and colorless, making leaks particularly hard to detect.


Handheld air monitors and fixed indoor monitors

The hydrogen sensor head features in our handheld air quality monitors: Ranger and S Series, and indoor fixed monitor range Series 900.

Hydrogen sensor head measurement principle

Aeroqual’s hydrogen sensor head incorporates a semiconducting gas sensor, which is manufactured by Aeroqual. The sensing layer is a p-type semiconductor whose resistance increases when H2 gas is present. The change in sensor resistance is used to calculate H2 concentrations.

Hydrogen sensor head specifications

The table below contains the hydrogen sensor head specifications. It can be used on our Ranger, S Series and Series 900 products and is designed for industrial health and safety.

Sensor code


Sensor type


Range (ppm)


Detection limit (ppm)


Accuracy of factory calibration

<±10 ppm +10%

Display resolution (ppm)


Response time (seconds)


Products that measure hydrogen

The following products measure hydrogen, as well as particulate matter and gaseous pollutants in real-time.

Inquire about our hydrogen products

Our hydrogen advanced monitoring systems deliver hyper-local data and real-time alerts, giving you actionable data to make the decisions that matter.