Gas Flow Meter (PanaFlow)

Reliable flow measurement that is easy on your budget

The PanaFlow gas portfolio represents a new generation of Panametrics ultrasonic flow meters. Offered in one-path or two-path wetted versions, PanaFlow gas meters bring together Panametrics ultrasonic expertise with the benefits of ultrasonic technology for affordable, high performance flow measurement.

Unlike other flow measurement technologies, the PanaFlow meters do not require maintenance since they do not have any obstruction in the flow path to clog the process line or moving parts to be damaged by flowing gas. They provide years of trouble-free operation with no adjustments, tuning or corrections. PanaFlow gas meters provide a lower overall total cost of ownership, superb reliability, and excellent performance.

Designed for high impurity gas measurements

Each PanaFlow gas meter is a complete ultrasonic flow metering system specifically designed for the measurement of gases with high levels of impurities. Engineered to the highest levels of reliability and dependability, it is designed with an all-cast meter body and high-accuracy machined surfaces. It has no welds to adversely impact flow dynamics, making possible high accuracy flow measurements, even at low flow conditions.

Local or remote electronics

PanaFlow gas meters are offered with local or remote electronics that are factory-installed on the meter body or electronics that can be installed remotely from the meter body. It is not recommended to locally mount the electronics in applications above 185°F (85°C). PanaFlow gas meters have robust electronics functionality to meet your application needs.

Electronics ordered with a PanaFlow gas meter system are programmed with setup information based on your application, so the system is ready to use as soon as the meter body is installed. When local electronics are integrated with the system, the transducer wiring is already complete, further simplifying the field installation. When remote electronics are used, transducer cabling must be run between the flow meter system and the flow meter electronics.

Transit-time flow measurement

In this method, two transducers serve as both ultrasonic signal generators and receivers. They are in acoustic communication with each other, meaning the second transducer can receive ultrasonic signals transmitted by the first transducer and vice versa. In operation, each transducer functions as a transmitter, generating a certain number of acoustic pulses, and then as a receiver for an identical number of pulses. The time interval between transmission and reception of the ultrasonic signals is measured in both directions. When the gas in the pipe is not flowing, the transit-time downstream equals the transit-time upstream. However, when the gas is flowing, the transit-time downstream is less than the transit-time upstream. The difference between the downstream and upstream transit times is proportional to the velocity of the flowing gas, and its sign indicates the direction of flow.