The Model 3750C Metal Tube Variable Area Flow Meter (Part Number / Model Code: 3750CC0A11BLJAD4A0) engineered and manufactured by world-renowned Brooks Instrument LLC (United States) is an armored rotameter designed for low-flow gas and liquid applications where glass tube flowmeters cannot meet industrial plant safety requirements.

PRODUCT SPECIFICATIONS & FEATURES (3750CC0A11BLJAD4A0):
- Model Code: 3750CC0A11BLJAD4A0
- Series: Model 3750C All-Stainless Steel Metal Tube Meter
- Calibrated Fluid: Air
- Flow Capacity Range: 6 to 60 Nl/h (NLPH - Normal Liters Per Hour)
- Rugged Construction: Complete 316/316L Stainless Steel wetted construction and metering tube, providing high mechanical integrity, abrasion resistance, and chemical compatibility with process media.
- Magnetic Coupling Principle: The internal float's position inside the pressurized metal metering tube is magnetically transmitted through the pressure wall to the external pointer assembly. This seal-less magnetic design eliminates mechanical seals and dynamic packing glands, completely preventing process gas leakage to the atmosphere.

KEY ADVANTAGES:
- Maximum Safety in Severe Applications: The armored metal tube withstands high line pressures, thermal shocks, and mechanical pipe vibrations that would destroy conventional glass rotameters.
- Clear Mechanical Pointer Indication: High-visibility dial scale with smooth, flutter-free pointer movement ensured by magnetic damping.
- Zero-Power Independent Operation: Operates purely on fluid dynamic forces without external electrical power, guaranteeing continuous 24/7 visual flow monitoring during facility power outages.

• Manufacturer: Brooks Instrument LLC
• Origin: United States (USA)
• Model Code: 3750CC0A11BLJAD4A0
• Product Series: 3750C Series Armored Metal Tube Variable Area Flow Meter
• Operating Principle: Metal Tube Variable Area / Rotameter
• Calibrated Medium: Compressed Air / Technical Gases
• Flow Rate Measuring Range: 6 – 60 Nl/h (NLPH)
• Flow Accuracy: ±3% to ±5% Full Scale (F.S.)
• Repeatability: ≤ 0.5% F.S.
• Indication Mechanism: Non-contact magnetic coupling with pointer indicator
• Metering Tube Material: 316/316L Stainless Steel
• Float Material: 316 Stainless Steel
• Indicator Housing: Weatherproof polyester-coated cast aluminum / stainless steel
• Maximum Operating Pressure: Up to 100 bar (1500 psig) depending on fitting type
• Process Operating Temperature: -20°C to +150°C (up to 200°C depending on seal material)
• Process Connections: 1/4" NPT (or 1/8" NPT) female threaded ports
• Flow Direction: Vertical bottom-to-top flow orientation
• Ingress Protection Rating: IP65 / NEMA 4X
• Typical Applications: Purge gas metering on chemical reactors, carrier gas control in analytical systems, burner fuel/air monitoring in furnaces, and mechanical seal flush systems in petrochemical processing plants.