Sierra 780S Flattrack Thermal Flow Meter from Sierra Instruments  

Flat Trak 780S flow meter gas steam by Sierra Instruments

Inline Thermal Mass Flow Meters with Flow Conditioning

Sierra Instrument's FlatTrak™ 780S delivers precise measurements with heavy-duty industrial gas mass and air flow meter measurement applications.  Choose from a wide variety of inline and insertion thermal mass air flow meters for precision CFM (cubic feet per minute) measurement of gas mass flow rate in industrial environments. 

The 780S offers accurate monitoring of peak, low flow and total gas mass flow rates is a critical part of many industrial process control systems. The FlatTrak™ 780S offers improved measurement capabilities in installations where long straight pipe runs are not available.

The meter:

  • Incorporates Sierra’s unique dual-plate flow conditioning element to eliminate velocity profile distortions, as well as swirl and temperature stratification in the gas stream
  • Reduces piping straight run requirements to as little as three upstream diameters
  • Saves you money on installation costs when compared to an orifice-plate where at least 20 upstream piping diameters are required for optimal performance
The FlatTrak 780S is ideal for:
  • Measuring gas to boilers & burners
  • Air volumne flow metering
  • Compressed air flow
  • Combustion air flow
  • Natural gas fuel flow
  • Custody transfer
  • Stack gas emissions flow monitoring
  • Landfill gas at low pressure
  • Natural Gas Flow Measurement Instruments
  • Precision Measurement & Control
  • Gas Mixing & Blending
  • Waste Water Treatment
  • Flare Gas Measurement
  • Carbon Dioxide Flow Meters

Operating Principal: Thermal dispersion technology for direct mass flow measurement featuring no pressure or temperature compensation needed, no moving parts, low pressure drop, high turndown. 

Benefits at a glance

  • Measuring Range 0 to 20,000 sfpm (100 smps)
  • Built-in flow conditioning elements drastically reduce upstream straight run requirements
  • No drift DrySense velocity sensor
  • Lifetime warranty on sensor
  • Custom options available
  • Dual range capability
  • Insertion version for pipe/duct sizes up to 72 inches available
  • Low pressure drop
  • No moving parts
  • Digital communicaitons
  • Field rangeability
  • Flow totaliser and alarms
  • Large LCD display
  • Hazardous Are locationb enclosure (IP66) and NEMA4X (IP65)
  For more information download the DATA sheet
  How Thermal Mass Flow Meter Technology works