ONICON System-40 BTU Meter

Measure the thermal output of heat pumps, geoexchange, boilers, and domestic hot water with the ONICON System-40 BTU meter.

See real-time conditions plus historical reports with the ONICON System-40 BTU meter and PowerWise. Chart the thermal heating or cooling, along with flow rates, volume, and supply/return temperatures. Read more about our geo exchange / geothermal monitoring.

Thermal Heating and Cooling Charts

BTU Meter Technical Information

This meter includes a pair of temperature sensors, an inline ultrasonic flow sensor, and local/remote display. The device supports pipe sizes from ½" through 2½" with flow rates ranging from 0.03 to 250 gallons per minute (GPM). Versions are available with a BACnet® MS/TP or Modbus RTU communications interface.