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  • Transit-time flow measurement in 2 to 16in pipes
  • For acoustically conductive gases
  • 0.5 to 250 ft/s (0.15 to 76 m/s) flow measurement range
    • Max flow depends on pipe size
  • ±1.5% accuracy
  • ±0.5% of reading repeatability
  • NEMA Type 4X IP66 enclosure
    • Explosion-proof & weatherproof
  • Built-in magnetic, six-button keypad operation


The Panametrics PanaFlow Z1G ultrasonic flowmeter is designed to measure the flow rate of virtually any gas, offering a unique combination of accuracy, range-ability, and reliability in a robust meter design. Employing ultrasonic time differential technology, the PanaFlow Z1G flowmeter has no moving parts and generates no flow obstruction or energy-robbing pressure drops. Virtually maintenance free, the Z1G will provide years of trouble-free operation with no adjustments, tuning or corrections.

The PanaFlow Z1G is a complete ultrasonic flow metering system specifically designed for the measurement of gases with high levels of impurities. Designed as a well-head meter for coal-seam methane extraction and bio-gas measurement, the Z1G is engineered to the highest levels of reliability and dependability. Designed with an all-cast body and high accuracy machined surfaces, the Z1G has no welds that can adversely impact flow dynamics, making possible high accuracy flow measurements, even at low flow conditions.

The Z1G employs similar transducer technology used in thousands of Flare Applications around the world. Ultra-high power transducers with enhanced sound isolation were designed for conditions of extreme condensate and impurities, assuring continuous operation even under the harshest of process conditions. The PanaFlow Z1G meter body eliminates exposed wires that can catch, or fail due to extreme environmental conditions. This unique design assures the highest field reliability for continuous flow measurements over a wide range of conditions

Applications for the Panametrics PanaView Z1G ultrasonic flow meter

  • Coal-seam methane wellhead
  • Natural gas production
  • Vent gases, biogases and waste gases
  • Vapor recovery


This product can be used in the following applications: