The Model MT3809G Metal Tube Variable Area Flow Meter (Model Code: 3809GBD08DBAF1G2B0A0) designed and manufactured by premier flow instrumentation specialist Brooks Instrument LLC (United States) is the global benchmark for rugged armored rotameters. It is purpose-built for critical process and utility liquid applications where glass tube flowmeters present unacceptable plant safety or pressure risks.

PRODUCT SPECIFICATIONS & FEATURES (3809GBD08DBAF1G2B0A0):
- Model Code: 3809GBD08DBAF1G2B0A0
- Series: Model 3809G Stainless Steel Meter (MT3809G Series)
- Calibrated Medium: Water
- Flow Capacity Range: 0.1 to 1.0 m³/h (equivalent to 100 to 1000 L/h)
- Full Stainless Steel Construction: The pressure-containing tapered metering tube and all wetted parts are manufactured entirely from 316/316L Stainless Steel, delivering robust resistance to mechanical pipe strain, water hammer shocks, and chemical corrosion.
- Magnetic Coupling Principle: The internal float movement inside the pressure tube is magnetically transferred across the solid stainless steel pressure boundary to an external dial indicator needle. This packingless design completely eliminates dynamic process seals, preventing hazardous fluid leakage.

KEY ADVANTAGES:
- Maximum Industrial Safety: The armored metallic body provides complete process containment, eliminating catastrophic glass tube breakage under high pressure, temperature spikes, or piping vibration.
- Clear Mechanical Pointer Dial: Easy-to-read dial face featuring magnetic dampening to ensure stable, oscillation-free pointer positioning during slight flow pulsations.
- Self-Powered Reliability: Functions purely on fluid mechanical principles without requiring auxiliary electrical power, guaranteeing uninterrupted 24/7 on-site visual monitoring even during plant blackouts.

• Manufacturer: Brooks Instrument LLC
• Origin: United States (USA)
• Model Code: 3809GBD08DBAF1G2B0A0
• Product Series: MT3809G Series Armored Metal Tube Variable Area Flow Meter
• Measurement Principle: Metal Tube Variable Area / Rotameter
• Process Fluid: Water, industrial cooling water, and equivalent liquids
• Measuring Flow Range: 0.1 – 1.0 m³/h (Water)
• Turndown Ratio: 10:1
• Flow Accuracy: ±2% of Full Scale (or Class 2.5 per VDI/VDE 2178)
• Repeatability: ≤ 0.5% Full Scale (F.S.)
• Indicator Mechanism: Mechanical pointer indicator via non-contact magnetic coupling
• Metering Tube Material: 316/316L Stainless Steel
• Float Material: 316/316L Stainless Steel
• Indicator Housing: Heavy-duty die-cast aluminium with polyurethane powder coating
• Maximum Operating Pressure: Up to 100 bar (dependent on process flange rating)
• Fluid Operating Temperature: -40°C to +150°C (up to 200°C for elevated temp configurations)
• Flow Direction: Vertical installation, bottom-to-top flow orientation
• Process Connections: Industrial standard flanged connections (ASME / EN Flange)
• Housing Protection Class: IP66 / NEMA 4X
• Typical Applications: Compressor water cooling jacket monitoring, boiler feed water treatment, industrial cooling towers, chemical blending lines, and pump seal flush systems.