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HDC3020-Q1: Test humidity in hydrogen gas

Danilo A.
Mastermind 24705 points
Part Number: HDC3020-Q1

Hi Team,

Our customer would like to know if they can use the HDC302x-Q1 sensors to test the humidity in hydrogen gas. I have asked some questions from our customer and here are his response.

1. What is the operating pressure? 
Ans.3 Bars

2. Can you please confirm the concentration range of hydrogen?
Ans. Could be up to 100% hydrogen

3. Is the environment completely free of oxygen and only hydrogen is present?
Ans. the sensor has to be used one time in normal air (with oxygen) and one time in a full hydrogen concentration

4. Could you provide the end application to help us determine the sensors behavior during hydrogen exposure?
Ans. It is used in a Hydrogen supply line of a fuel cell, as well as supply line of the air.

Regards,

Danilo

  • 0
    TI__Expert 3270 points

    Hi Danilo,

    1. Several parts in our lab were tested to ~0.7MPa (~100psi), (for reference, 1Mpa = 145psi) using CDA (compressed dry air) in a small vessel and it did not break the devices. They reported almost 0%RH when they were placed in that condition. 

      We do not have a max spec that this device can tolerate. 

    2. Hydrogen is a highly non-polar and fairly non-reactive molecule. There is no chemical interaction expected due to interaction of Hydrogen with polyimide under recommended operating conditions of our device. So, it should not impact the device performance.
      1. However this was never tested in the lab and we cannot guarantee any device performance under these conditions. 

    Regards,
    Pavani Tenneti