HPS-100 Datasheet, PDF (13/24 Pages) ams AG – Automotive Hydrogen Sensor

HPS-100 − Electrical Interface
The figure below shows the output for 0% hydrogen (pulse
width of 20 μs).
Figure 17:
Sensor Output for 0% Hydrogen (Pulse Width of 20 μs)
ams Datasheet
[v1-00] 2015-Apr-06
The relation between detected H₂ concentration (in ppm) and
pulse width (in μs) is:
(EQ3) H₂ = (pulse width – 20)*5000
The figure below shows the relation between H₂ prediction and
pulse width.
Figure 18:
Relation Between H₂ Prediction and Pulse Width
Pulse Width
10 μs
20 μs
21 μs
…
219 μs
220 μs
Message Type
Error
0% H₂
0.5% H₂
…
99.5% H₂
100% H₂
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