Model 780S-UHP Series Ultra High Purity™ Inline Mass Flow Meter with Flow Conditioning

Our Model 780S UHP is the industry-choice for bulk gas distribution service in semiconductor fabs, in pharmaceutical production and other ultra-clean processes. Real-time monitoring of gas usage provides reliable information on consumption and usage patterns in the manufacturing area and may be used for both billing and diagnostic purposes. The Model 780S-UHP is constructed with 316L electropolished tubing in choice of 7-10 Ra (UHP) or 20-25 Ra (HP) interior.

The Model 780S-UHP is available in pipe sizes from 1/2-inch up to 12-inches and are offered with Buttweld connections and a VCR probe-connection fitting.  Larger line sizes are available upon request.  The Model 780S-UHP also features 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 least 20 upstream piping diameters are required for optimal performance.

In addition, the Model 780S-UHP 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-UHP 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.