Contact Us   





Model 780S Flat-Trak™ Inline Mass Flow Meter with Flow Conditioning

The Model 780S Flat-Trak® 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. 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 1/4-inch to 8-inches in a choice of NPT, Buttweld or ANSI 150 lb. flanged design (300 lb. flanges optional).  Larger sizes are available upon request.  This meter features Sierra's well-known Smart Electronics Package for field-rangability, field flow-range adjustment, and field validation and diagnostics.  The Model 780S has outstanding low-velocity sensitivity and exceptional accuracy.

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 ±2% of reading, 0.2% of full scale repeatability.


Smart Interface Program
Click to download a zipped Smart Interface Program (Note extended download time required)

Unique Product Features

• 316SS construction
• Range of process connections
• Field Validation/Configuration
• 2% reading accuracy
• Very large installed base
• Removable probe for recal/service
• In-line flow conditioning
• Meters all process gases


Helpful Links

Request for Quote
Get Sales Support
Get Technical Help
Customize It
Calibration & Repair
Read Application Stories
Look at Accessories


Technical Datasheet

Product Line Brochure


Copyright 2008 Sierra Instruments, Inc. All rights reserved. | Articles | Site Map

Heavy-Industrial Thermal Mass Flow Meter