I need a humidity sensor.

[hboyer90 3]

Hey guys, I was asked to monitor the temp and humidity in the IT's server room.  I have a remote I/O module that I can run to, so that is easy.  I have thermocouples I can use as well as a module.  What I don't have is a way to monitor humidity.  I want an analog humidity sensor that will output either a 0-20ma, 4-20ma or 0-10vdc signal that I will then run back to my analog input card and analyze the data from there.

I've never used a humidity sensor.  Can someone recommend me one?  We've used Keyence for laser distance sensors, and pressure sensors, but I've never used a humidity sensor before.

This will be used indoors, around 65-80 degrees Fahrenheit.

It will be running to an Allen Bradley Micrologix 1100 I believe.

Thanks!

[hboyer90 3]

Any reason this wouldn't work?

[kaiser_will 65]

Dwyer makes great quality instruments.

http://www.dwyer-inst.com/Product/AirQuality/Accessories/WirelessTemperature-Humidity

Omega is the go-to source for most instruments.  These 2 vendors should provide options for your application.

http://www.omega.com/pptst/HX93B.html

[panic mode 246]

it can work but the sensor output type (4-20mA)  does not seem to match analog input type of your PLC (0-10VDC).

so you can use 500 Ohm resistor to convert current to voltage but working range will be 2-10V

 

[hboyer90 3]

Awesome, thanks guys.