Core Models and Measurement Ranges
The SMV800 series is available in four primary models tailored to different differential pressure (DP) and static pressure (SP) requirements:
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SMA810: Differential Pressure range of 0 to 62.5 mbar; Static Pressure range of 0 to 7 bar Absolute.
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SMA845: Differential Pressure range of 0 to 1000 mbar; Static Pressure range of 0 to 104 bar Absolute.
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SMG870: Differential Pressure range of 0 to 1000 mbar; Static Pressure range of 0 to 310 bar Gauge.
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SMG890: Differential Pressure range of 0 to 5000 mbar; Static Pressure range of 0 to 310 bar Gauge.
Key Benefits and Advantages
Integrated Three-in-One Measurement The SMV800 measures differential pressure and static pressure from a single integrated sensor, while a standard Resistance Temperature Detector (RTD) or thermocouple provides the process temperature. An internal microprocessor processes these inputs to calculate a fourth variable: the compensated mass or volume flow rate.
Dynamic Flow Compensation Standard flow measurement often ignores changes in fluid density. The SMV800 dynamically accounts for fluctuations in pressure and temperature, automatically correcting for changes in fluid density, viscosity, and discharge coefficients. This is critical in steam and gas applications where environmental swings can otherwise lead to significant measurement errors.
Industry Standard Calculation Methods The transmitter’s internal flow engine supports globally recognized standards, including ASME, ISO, AGA, and GOST. This ensures that flow calculations are compliant with regulatory requirements and suitable for internal cost accounting or custody transfer applications.
Modular Platform and Easy Maintenance As part of the SmartLine family, the SMV800 features a unique modular design. The display, communication module, and terminal block are interchangeable. The advanced graphics display allows operators to monitor all four variables (DP, SP, Temp, and Flow) simultaneously, complete with trend charts and diagnostic health alerts.
Reduced Installation Complexity Using one SMV800 transmitter does the work of three separate instruments. This results in fewer process penetrations, less impulse piping, and reduced electrical wiring. Beyond capital savings, fewer penetrations mean fewer potential leak points, enhancing overall plant safety.
Technical Properties
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Measurement Variables: Differential Pressure, Static Pressure (Absolute or Gauge), and Process Temperature.
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Calculated Variable: Compensated Mass or Volume Flow.
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Reference Accuracy: Up to 0.0375% for pressure; mass flow accuracy typically better than ±0.6% (application dependent).
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Communication: Supports HART 7 and FOUNDATION Fieldbus.
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Safety: SIL 2/3 certified as a standard feature.
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Compliance Standards: ASME MFC-3M, ISO 5167, AGA 3, AGA 8, and others.
Primary Fields of Application
The SMV800 is the ideal solution for energy-intensive industries requiring high-stakes flow monitoring.
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Steam Measurement: Calculating mass flow at boiler outlets and distribution headers for precise energy accounting.
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Natural Gas Flow: Compensated volume flow measurement for internal billing and process control in refineries and chemical plants.
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Chemical Dosing: Precise mass flow control of liquid and gas reactants to ensure correct batch ratios.
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Oil & Gas Production: High-accuracy monitoring in separators and gas gathering manifolds.
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Utility Monitoring: Tracking compressed air and water flow across large industrial sites to optimize resource distribution.
