Verify Indoor Air Quality – Sensors

† Verify the differential pressure sensors or switches across your filter banks are operational and calibrated. Confirm the alarm limits in the BAS system are set to the differential pressure values indicating a clogged or dirty filter condition.

† With recommended requirements for air flushes and increased outdoor air intake, it is essential to inspect and confirm the operation and setpoints of your AHU freeze stats. Replace if faulty and add additional low-temperature detection sensors/freeze stats for duct coverage as necessary.

† Verify the existing room and duct, temperature, humidity, and CO2 sensors are operational and calibrated. Replace failed sensors and add new sensors as required to meet suggested guidelines.

† Inspect and confirm the operation of the BAS humidity sensors. If using resistive type humidity and dew point sensors, consider changing to capacitive technology (CMOS) sensors, which are more accurate and not susceptible to drift. The updated ASHRAE 62.1 standard also requires systems to limit the indoor humidity to a maximum dew point of 60°F (15°C) during both occupied and unoccupied hours, whenever the outdoor air dew point is above 60°F (15°C). Belimo’s field selectable multi-sensors measure:
temperature, RH, dew point, enthalpy, and absolute humidity.

† Verify the operation and calibration of the CO2 sensors associated with the Demand Control Ventilation (DCV) systems. Replace failed sensors and add sensors as necessary to meet the guidelines.

† Confirm the DCV systems operate to maintain maximum CO2 concentrations of 800-1000 ppm in occupied spaces.

† Are you using the latest technology in CO2 measurement? Dualchannel NDIR self-calibrating room and duct sensors meet the guidelines and ensure accuracy and reliability.

† Adding additional intake air to meet the new guidelines may cause building static pressure to change. Confirm static pressure is maintained at a positive pressure setpoint unless a specific zone calls for negative pressures like an isolation room.

† Are you using the latest technology in pressure sensors? Belimo’s pressure sensors with true auto-zero technology automatically calibrates and meets the recommended guidelines ensuring accuracy throughout the product’s lifespan.

Belimo sensors offer superior reliability, easy installation, and seamless integration with major Building Automation Systems (BAS). We offer a complete range of sensors to measure temperature, humidity (relative humidity, absolute humidity, enthalpy, and dew point), pressure, CO2, and volatile organic compounds (VOCs).