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Wiring diagram humidity sensor HIH 4030 and NI-9201

I measured relative humidity using HIH 4031-003 in collaboration with NI-9201. This sensor has 3 pins, namely (+) supply Voltage 5Volt, Voltage out (to channel 1 on NI-9201), and (-). I have problems with the output measurement results in the form of fluctuating voltage values such as noise. Is the wiring diagram that I made correct?

 

What is the solution to my problem?

 

Thank you.

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Message 1 of 5
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Wiring looks correct, what does the output signal look like?

I think this sensor is sensitive to light from what I saw on a spec sheet, try putting something over to block the light.

 

-Ak2DM

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"It’s the questions that drive us.”
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it, is the datasheet of the sensor, and the graph of the voltage output.

https://www.sparkfun.com/datasheets/Sensors/Weather/SEN-09569-HIH-4030-datasheet.pdf

 

 

 

 

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Try putting a 100Kohm resistor between the OUT and -Ve (Spec sheet shows a minimum load of 80kohm). I am wondering if the 1Mohm input impedance of the 9201 is causing issues.

 

-AK2DM

~~~~~~~~~~~~~~~~~~~~~~~~~~
"It’s the questions that drive us.”
~~~~~~~~~~~~~~~~~~~~~~~~~~
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I already using 80 kohm, next i will try with 100 kohm. Thank you

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