Sierra FlatTrak™ 780S-UHP Thermal Mass Flow Meter

SKU: 780S-uhp

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The 780S is North America’s #1 selling inline thermal mass flow meter (2009 Flow Research, Boston MA). Our ultra high purity 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.

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Manufacturer warranty

Local SG support

Description

The 780S-UHP thermal mass meter is constructed with 316L electropolished tubing with 7-10 Ra (UHP) interior. The 780S-UHP is available in pipe sizes from 0.5 up to 12 inches (1.27 to 30.4 cm) and offered with buttweld connections and a VCR probe-connection fitting.

The 780S-UHP also features Sierra’s unique FlowTrak 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.

Operating Principle: Thermal dispersion technology provides direct mass flow measurement featuring: no pressure or temperature compensation needed; no moving parts; low pressure drop; and high turndown.

Product Benefits

Industry-choice for bulk gas distribution custody transfer service in semiconductor fabs
Ultra high purity interior finishes
Built and shipped to ultra high purity claen room standards
Sierra’s state-of-the-art ISO 9000 closed loop calibration facility for best accuracy
Built-in flow conditioning elements drastically reduce upstream straight-run requirements
Buttweld connections and a VCR probe-connection fitting
Field Validation/Configuration to assure operating performance: Watch video

Field rangeability
Flow totalizer and alarms
Very low pressure drop
No moving parts
Flow-range adjustment and validation and diagnostics
Dual-range capability
Large LCD display and pushbutton interface, remote enclosure mounting available
Free computer interface software: Download now

Specifications

Accuracy: +/- 1% of reading plus +/- 0.5% of full scale
Repeatability: +/- 0.2% of full scale
Pipe sizes from 0.5 to 12 inches (1.27 to 30.4 cm)
Flow range to 20,000 sfpm (100 smps)
Measure all inert gases and all non-condensing clean gases
Flammable gases: methane, propane, hydrogen, digester gas, natural gas
Corrosive gases compatible with 316L stainless steel
Turndown: 100:1
Temperature:
- Operating: -40°F to 350°F (-40°C to 200°C)
- Ambient: -40°F to 120°F (-40°C to 50°C)
High temperature (HT) option to 750°F (400°C)
Response time is one second to achieve 63% of final value
Power supply:
- 18 to 30 VDC (regulated), 625 mA maximum
- 100 to 240 VAC, 50/60 Hz, 15 watts maximum
Electropolished 7-10 Ra 316 stainless steel construction
Output signals: RS-232, 0 to 5 VDC, 0 to 10 VDC, 4 to 20 mA
User definable pulse output for totalized flow
Digital communications: Foundation Fieldbus, HART, Modbus RTU, and Profibus DP
Hazardous-Area Location Enclosure (IP66) and NEMA 4X (IP65)
Approvals:
- FM (USA) Class I, Div I, Groups B,C,D
- CSA and CRN (Canada)
- ATEX
- CE
- PED (EU)
- GOST R (Russian Federation)
- Chinese Pattern Approval (China)

Data Sheets

Data Sheet

Sierra 780S UHP - Datasheet

ENGLISH

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Sierra FlatTrak™ 780S-UHP Thermal Mass Flow Meter

Description

Data Sheets

Sierra FlatTrak™ 780S-UHP Thermal Mass Flow Meter

Description

Data Sheets

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