Fieldpiece SCM4 – Carbon Monoxide Detector

• Field-replaceable CO sensor
• Calibrate to ambient quickly with the ZERO button
• Audio/visual alarms with mute
• Fast electro-chemical sensor

The SCM4 standalone carbon monoxide detector measures carbon monoxide in parts per million (ppm), and is intended to measure levels of CO in still, ambient air. The most practical application of the SCM4 is to determine if indoor CO levels are higher than outdoor levels and to determine the gas’s source.

The SCM4 uses a fast reacting, electrochemical sensor that does not consume chemicals and can easily be replaced in the field if needed. CO sensor life is primarily determined by the type of exposure, and on average, last approximately two years. The Fieldpiece SCM4 Carbon Monoxide Detector has a very fast reaction time and is fast enough for walk-around tests.

Features and benefits of the SCM4 include:

• Field replaceable CO sensor
• Advanced three-pin sensor measuring 0 to 1000 ppm CO
• Calibrate / Zero SCM4 to ambient quickly with the ZERO button
• Audio and visual alarms w/mute
• Bright blue, backlit dual-display with MAX and real-time measurements displayed
• Magnetic hanger for hands-free operation
• Auto Power-Off (APO)

The “Walk Around” Test

The Fieldpiece SCM4 is typically used with the “Walk Around” Test. The SCM4 responds almost instantly to changes in CO levels in the air. If you see a difference in CO levels from outside to inside, you need to find the source of the CO. Walk around and watch the display.

By constantly going towards the area of higher concentration, you can determine the source of the CO. Persistent sources of CO, such as malfunctioning combustion equipment in occupied spaces, must be serviced immediately. These can be life threatening. When searching for sources of CO, make sure that you never put yourself or anyone else in danger of excessive exposure to CO. Overexposure to CO can have long-term health effects and can be fatal.