Using Hygroclip humidity sensor and LabView

[9850729173]

Hi

I've setup like this

NI cDAQ 9174 with IO module NI 9201. I've connected Hygroclip 2 to NI 9201. Hygroclip 2 gives output in 0-1V. I want to measure temperature and humidity using this sensor.

I'm unable to get the readings correctly from  NI Measurement and Automation s/w.

If  I choose voltage as analog input it is showing me graph which is going -ve. Also it is varying somewhat like sine wave, whereas, if my understanding is correct, it should be straight line.

Can someone tell me what is that I'm doing incorrectly?

Does anyone have LabVIEW programs to communicate with Hygroclip 2.

Help on this is greatly appreciated.

Best Regards,

Swati

[BlueTwo]

HI,

I am not familiar with the 0-1 v op on the HC2, and i do not have one in front of me.... but have you validated your experimental set up using an external reference/powersource variable between 0 - 1 v to check it is all ok?

Using a Rotronic USB adapter for the HC2, and the FTDI example code (on their website) and the RoASCII protocol is a good place to start if you are after a USB interface.

Alternatively RS232 using the serial comms, and the RoASCII protocol is straight forward. I think there is a LabVIEW example on the Rotronic website.

They also have a .dll, but the manual was only available in German last time i looked.

[9850729173]

Thanks BlueTwo for yourreply.

I've tested HC 2 with IOmodule manufactured by some other company. It gives me counts corresponding to current temperature. That particular module supports Modbus RTU, so I can read using Modbus Master.

With NI instruments, now I want to use LabVIEW programs to read the value. Before going to LabVIEW, I wanted to check with Measurement and Automation s/w. I'll check the LabVIEW example on Rotronic web-site

Best Regards,

Swati