The hydrogen microsensor offers you extraordinary sensitivity for reliable hydrogen measurement, even in natural systems and in gas. You will get a fast responding sensor, and you can choose a tip size down to 10 µm to achieve high spatial resolution. Read more...
Two types of hydrogen sensors
You can use the two types of hydrogen sensors, H2 and H2-X, in the same way. The only differences between the two sensor types are that the H2-X tolerates H2S and has a slightly slower response.
The H2 and H2-X microsensors are Clark-type sensors measuring hydrogen partial pressure.
The working principle of the hydrogen microsensor is based on diffusion of hydrogen through a silicone rubber membrane in the tip to a platinum anode where the hydrogen gets oxidized. This anode is polarized against an internal reference electrode which receives the electrons from the oxidation of hydrogen at the platinum anode.
The resulting current changes linearly with the hydrogen concentration at the sensor tip and is in the pA range. It is measured by a high quality picoammeter, such as the UniAmp amplifiers.
UniAmp Multi Channel for all Unisense sensors and electrodes including optical sensors
Microprofiles with extreme accuracy, high spatial and temporal resolution
Economic amplifier portfolio for single analytes - O2, pH/mV, H2, N2O or H2S
Sealed system to measure O2, H2, H2S, N2O, NO, pH, Redox, and temperature metabolism
Hydrogen and oxygen microsensors for direct and real-time detection of dissolved gas in photocatalytic/electrochemical studies
Hydrogen microsensors used to document the possible positive effect of H2-enriched drinking water as a biomedical treatment.
Analyzing gas cavity formation at implant sites