H2S Sensor

Discussion in 'The Projects Forum' started by vincent19-mas, Jan 15, 2014.

  1. vincent19-mas

    Thread Starter Member

    Dec 27, 2012
    Dear all,

    Recently I am investigating using this sensor.

    I not sure how to read all the data. How should I know what will be the output voltage when in room temperature ?

    Thanks !
  2. MikeML

    AAC Fanatic!

    Oct 2, 2009
    What an uninformative (stupid) data sheet!

    It looks like you are supposed to use a 10Ω to 47Ω load resistor. It would be nice if they tell you were to connect it?

    It has three pins called Reference, Worker, and Counter. Do you think this thing came from China and this is some sort of wierd Chinglish?

    Not a clue about supply voltage or how to power it.

    The sensitivity is listed as 950 to 1450 nA per ppm . However, not a clue as to how that current comes out of the thing?

    If you read the footnote, it sort of suggests that they dont want you to know how to hook it up.
  3. JohnInTX


    Jun 26, 2012
    The original mfr. (Alphasense) is in the UK. Their site has lots more info on the applications notes page including reference circuits.

    'Worker' looks like a typo - its 'Working' in the apnotes. When you google the P/N though, you DO get lots of Chinese outfits selling it (or a copy). Some use the original datasheet with their name crudely covering the original.