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The Model 780S Flat-Trak inline mass flowmeter from Sierra is designed to offer improved measurement capabilities in installations where long straight pipe runs are not available.

The meter incorporates the Sierra dual-plate flow conditioning element to eliminate velocity profile distortions as well as swirl and temperature stratification in the gas stream.

This product reduces piping straight run requirements to as little as three upstream diameters.

As a result, you save money on installation costs when compared to an orifice-plate, where at least 20 upstream piping diameters are required for optimal performance.

The Model 780S is available in pipe sizes from 1/4in to 8in in a choice of NPT, Buttweld or ANSI 150lb flanged design (300lb flanges optional).

Larger sizes are available upon request.

This meter features the Sierra Smart Electronics package for field rangeability, field flow-range adjustment, and field validation and diagnostics.

The Model 780S has low-velocity sensitivity and exceptional accuracy, said Sierra.

The Model 780S is hazardous-area approved for FM, CSA, EEx, PED, CE, CENELEC and is also available with a NEMA 4X (IP65) enclosure.

Product accuracy is +/-1 per cent of reading, 0.5 per cent of full scale repeatability.

Sierra Instruments

With in excess of 150 locations in more than 50 countries, our Flow Measurement and Control Division is known for the design and manufacture of innovative high-performance fluid flow measurement and control instrumentation for nearly any gas, liquid and steam application spanning across global industries as diverse as scientific research, semiconductor, wastewater treatment, iron and steel, clean energy, aerospace and biotech, to name a few.

Experience our passion for flow

Our Flow Measurement and Control Division designs and manufactures high-precision capillary-sensor-based mass flowmeters and controllers for gas flow in applications. We also design and manufacture immersible thermal mass, transit-time ultrasonic, vortex shedding and multivariable flow instruments in both standard and customised versions for applications in industrial and hazardous environments.

Our technologies precisely measure and/or control very low flows of gas down to less than 1sccm full scale, as well as extremely high flows of gas, liquid and steam. With rugged product design, cutting-edge innovation and a worldwide team of flow experts, we know you will 'experience our passion for flow'.

Our flowmeters and controllers provide a high return on investment.

  • Direct mass flowmeters provide improved accuracy and cost efficiencies
  • Direct mass flowmeters do not need pressure or temperature compensation equipment or flow computers
  • Flowmeters provide immunity to process changes in P&T, leading to very repeatable measurements
  • In gases, density is highly variable. Unlike mass flowmeters, volumetric gas flowmeters are very sensitive to changes in pressure and temperature
  • Mass flowmeters are a necessity in more than 80 per cent of all industrial processes such as those involving chemical reactions, combustion, respiration and HVAC, which are based on mass flow, not volumetric flow

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