NG # 05680003-HW-FLEXIM-003
High-Temperature Steam Flow Meter – FLUXUS G831 ST-HT provides non-intrusive ultrasonic measurement of saturated and superheated steam in hazardous areas. It delivers bidirectional flow measurement with a turndown ratio up to 10:1, without pressure loss, pipe modification, process interruption, or moving parts.
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Custom Pricing
Get A QuoteThe Flexim FLUXUS G831 ST-HT is designed for high-temperature steam measurement directly from outside the pipe, supporting temperatures up to 630°C (1166°F). Its ultrasonic transducers can be installed using stainless-steel straps or the patented WaveInjector® high-temperature mounting system. Intrinsically safe pressure and temperature inputs enable volume and mass flow measurement, while FM Class I Division 1, ATEX, and IECEx Zone 1 certifications support hazardous-area applications. The clamp-on design enables cost-effective retrofit without modifying the pipe or interrupting the process.
Fluid Type: Saturated and Superheated Steam
Accuracy: Measuring System: ±0.3% of reading ±0.005 m/s (±0.02 ft/s); Measuring Point: ±3–4% of reading
Repeatability: ±1–3% of reading
Flow Channels: Up to 2
Flow Velocity Range: 0.01–35 m/s (0.03–115 ft/s), depending on pipe diameter
Certifications/Approvals: FM Class I/Div. 1, FM Class I/Div. 2, ATEX/IECEx Zone 1, INMETRO, NEPSI, PESO, KOSHA
Power Supply: 100–230 VAC; 20–32 VDC
Pipe Size: 10–900 mm (0.39–35.4 in.)
Pressure Range: 1–220 barg (15–3190 psig)
Media Temperature Range: -40 to +240°C (-40 to +464°F); with WI: -200 to +630°C (-328 to +1166°F)
Output: 4–20 mA Active/Passive (optional Ex-ia); 4–20 mA HART Active/Passive (optional Ex-ia); Pulse/Frequency/Binary
Input: Temperature (optional Ex-ia); 4–20 mA (optional Ex-ia Active)
Communication Protocol: Modbus RTU, BACnet MSTP, PROFIBUS PA (optional Ex-ia), FOUNDATION Fieldbus (optional Ex-ia)
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