TECHNOLOGY FOR SIGNAL TRANSIT TIME TO BE MEASURED ACCURATELY IN REAL STACK CONDITIONS
ENVEAβs uniqueΒ FlueSonicβ’Β technology and mathematical measurement algorithm allows the signal transit time to be measured accurately in real stack conditions enabling high quality assurance on emission release data, reporting mass emissions (kg/year) as well as concentration monitoring.
ENVEAΒ FlueSonicβ’Β instruments include Automated Reference Checks:
FlueSonicβ’Β ultrasonic technology measures the time of flight of ultrasonic signals between two transducers.
Each transducer emits an ultrasonic pulse where the time of flight of ultrasonic signals sent between the transducers in the direction of flow is measured and compared to that from the pulses in the opposite direction against the flow. The difference in transit time of the pulses is directly proportional to the velocity of the flue gas. The stack flow velocity in the measurement path is calculated from the upstream and downstream transit time in a way that is independent of the actual speed of sound in the gas, flue gas temperature or pressure of flue gas composition.