A771 TPI Carbon Monoxide Accessory For DMM's - The A771 is an advanced state-of-the-art Carbon Monoxide monitor that may be used to measure levels of carbon monoxide (CO) in the parts per million (ppm) range when used with a digital multimeter (DMM).
National Ambient Air Quality Primary Standards in the US call for less then 9 ppm carbon monoxide for an 8 hour average during any 12 month period.
Concentrations of 1 to 2 ppm may be found in homes with a normally operating gas furnace to well over 1,000 ppm in homes with a faulty furnace.
Just 200 ppm CO over 2 to 3 hours can cause slight headache, fatigue, dizziness, and nausea.
Carbon Monoxide testing is a crucial service provided by HVAC/R technicians.
Warning: This product may expose you to chemicals including lead which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov