The SLA5800 Series Digital Mass Flow Controller - Model SLA5853 (Model Code: SLA5853S2GAB2C2A1) engineered and manufactured by world-leading Brooks Instrument LLC (United States) is a high-performance thermal mass flow instrument designed for high-flow gas metering and precise closed-loop control in demanding industrial environments.

PRODUCT ARCHITECTURE & SPECIFICATIONS (SLA5853S2GAB2C2A1):
- Product Line: SLA5853 - High-flow model belonging to the advanced SLA5800 Series of digital thermal mass flow instruments.
- Operating Technology: Thermal mass flow sensor architecture paired with a fast-acting proportional control valve, providing direct mass flow measurement independent of gas pressure and temperature fluctuations.
- Elastomer Sealing: Features high-grade elastomeric seals (Viton / Fluoroelastomer), offering robust mechanical sealing integrity, superior leak tightness, and broad chemical compatibility for standard industrial gases and inert blends.
- High-Flow Aerodynamic Manifold: Specifically engineered fluidic path accommodates flow rates up to hundreds of standard liters per minute (ln/min or SLPM) with exceptionally low pressure drop across the device.
- Advanced Digital Architecture: Includes on-board memory supporting multi-gas and multi-range reconfiguration, enabling operators to switch gas types and flow capacities on-site via an independent diagnostic port without returning the unit for recalibration.

KEY ADVANTAGES:
- Industry-Leading Accuracy: Delivers standard calibration accuracy of ±0.9% of rate across the primary operating range, combined with outstanding zero stability over the product lifespan to virtually eliminate sensor drift.
- High-Speed Dynamic Response: Fast response and settling times under 1 second to within ±2% of setpoint, maximizing processing yields and reducing gas waste in rapid-cycle processes.
- Robust Industrial Construction: Rugged 316L stainless steel wetted construction and an EMI-shielded enclosure engineered for harsh industrial operating floors.

• Manufacturer: Brooks Instrument LLC
• Origin: United States (USA)
• Model Code: SLA5853S2GAB2C2A1
• Product Series: SLA5853 (SLA5800 Series Digital Elastomer Gas Mass Flow Controllers / Meters)
• Measurement Principle: Thermal Mass Flow Sensing
• Process Fluid Compatibility: Industrial gases, inert gases, fuel gases, calibration blends (N2, Air, Ar, He, H2, O2, CH4, CO2, etc.)
• Flow Range: High-flow range capacity (Up to 1000 ln/min N2 equivalent depending on orifice configuration)
• Rating Accuracy:
  - 20% to 100% Full Scale: ±0.9% of rate
  - 2% to 20% Full Scale: ±0.18% of full scale (F.S.)
• Repeatability: < ±0.2% of rate
• Settling Time: < 1.0 second (to within ±2% of new setpoint)
• Long-Term Zero Stability: < ±0.5% of F.S. over continuous operational cycles
• Control Turndown Range: 100:1 (or 50:1 depending on operating conditions)
• Maximum Operating Pressure: Up to 1500 psig (100 bar) or body-rating dependent
• Operating Temperature Range: 0°C to 65°C (32°F to 149°F)
• Wetted Materials: 316L Stainless Steel
• Seal Material: High-grade Elastomer (Fluoroelastomer / Viton)
• Electrical & Communication Interface (I/O):
  - Analog Signals: 0-5V DC, 0-10V DC, or 4-20 mA
  - Digital Interface: RS-485 / Modbus diagnostic port (supports industrial bus protocols)
• Power Supply Requirements: +15V to +24V DC (±10%)
• Process Connections: Compression tube fittings, NPT female threads, or industrial flanges
• Typical Applications: Metallurgical annealing furnaces, flat glass chemical vapour deposition, bioreactor head-space sparging, modified atmosphere packaging (MAP), and high-capacity gas burner ratio control.