NT-Series, Industry standard design and performance for Industrial Gas Detectors, at a cost which will give you a competitive edge. The NT-CO Cell is a new electrochemical gas sensor with 3 electrodes for the detection of carbon monoxide (CO) in a variety of gas detection applications. Exhibiting high performance with long-term stability, the NT-CO includes a built-in chemical filter for the removal of alcohol and other interfering gases. This compact (20.4mm dia) sensor is designed to comply with European performance standards for use in garages, tunnels and car parks, and is also suitable for more arduous applications such as mining.