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Measuring CO in buildings with heating boilers can prevent sickness, hospitalization – and worse.

2020 November 18

The U.S Centers for Disease Control and Prevention estimates that approximately 450 people die in the United States each year from accidental carbon monoxide (CO) poisoning – with more than 50,000 people either injured or made ill as well.

Buildings with heating boilers can be prone to CO leaks – which means schools, hospitals, apartment buildings, government offices and many more may present dangerous environments to occupants due to persistent, undetected carbon monoxide.

The BAPI-Stat 4 Carbon Monoxide Sensor (BA/CO-B4) is a simple, critical tool for monitoring and detecting CO.

And in fact, we’ve already helped implement a solution to a school district project in Tulsa, Oklahoma, using BAPI’s CO sensor.

It’s interesting to note that only five of the United States – California, Connecticut, Illinois, Maine, and Maryland – require CO detectors in school buildings. According to the Environmental Law Institute, however, a growing number of states and localities are establishing requirements for CO alarms in schools, and the 2015 version of the International Fire Code (IFC) – a model code adopted by many states – added a provision requiring CO alarms in classrooms in new educational occupancies.

Taking a proactive step, the Tulsa school district searched for a dependable and robust sensor to measure CO in 80 different buildings that house 42,000 students. BAPI worked with our sales and support team at to find a sensor that would serve the needs of the district.

That’s how the school district chose the BAPI-Stat 4 Carbon Monoxide Sensor, featuring:

  • 0-40 ppm CO measurement range
  • 30 ppm relay/audible alarm trip level
  • Local alarm indicators – both visual and audible – with a green/red LED indicator showing a status of Normal, Alarm, Trouble/Service or Test
  • Two relay outputs and one analog output
  • A sensing element with a typical life span of 7 years

Having both a local alarm as well as the relay and analog outputs permits the school to connect the sensor to the building’s automation system, so that it can shut down the school’s heating and ventilating units if CO is detected – and preventing the system from restarting until service personnel address the source of the carbon monoxide. Randy Ramsey of Ramsey System Services, LLC in Tulsa, OK, said of the project,

“With the help of BAPI and the team at, we’re very happy to have installed over 1,000 CO sensors in the last two years, with a goal to put sensors in every classroom in the district as the project continues over the next five years.”

And while schools are, of course, extremely important to protect against carbon monoxide poisoning, the need doesn’t end there. Any building heated by a boiler system is vulnerable to CO leaks, and the BAPI-Stat 4 Carbon Monoxide sensor provides a dependable, simple to use unit offering outstanding accuracy to help ensure indoor air quality and occupant safety.

Find the BAPI-Stat 4 Carbon Monoxide sensor at right here.

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