I am looking to purchase a suitable carbon monoxide sensor that will interface with analog inputs of a PLC controller.

Does anyone know of any vendors that carry these at reasonable prices? Preferably under $150.

Thank you.

 

There are a lot of people that make CO detectors and sensors, but the price point you selected seems pretty optimistic.

You might be able to take an off the shelf home CO detector that has the digital display and somehow interface to that if the price point you mentioned is that important.

 

Ambient CO? Or process gas / stack?

OEM (like on your own board that you make) or stand alone / off-the-shelf?

In an HVAC system? Out in a plant? Hazardous area certification (IS / Zone 2 / Division 2)?

If you need analog outputs, the ones I know of are more than your budget (MSA) I think. I buy them for mounting in hazardous areas (Class 1
Division 2).

http://www.msanorthamerica.com/catalog/catalog507.html

 

Check with the home alarm companies. I would expect them to have a CO detector that has relay contacts for a central alarm system.

Regards
cww