The SLA5800 Series Digital Mass Flow Meter - Model SLA5863 (Model Code: SLA5863S2GAA0C2A1) designed and manufactured by world-leading Brooks Instrument LLC (United States) is an advanced thermal mass flow instrument engineered for high-flow gas metering applications where an integral control valve is not required. It delivers laboratory-grade measurement accuracy directly in harsh industrial operating environments while maintaining an ultra-low pressure drop across the device.

PRODUCT ARCHITECTURE & SPECIFICATIONS (SLA5863S2GAA0C2A1):
- Product Line: SLA5863 - High-flow meter variant belonging to the proven SLA5800 Series of digital thermal mass flow instruments.
- Operating Technology: Thermal mass flow sensing architecture provides direct mass flow measurement independent of gas operating pressure and temperature variations.
- Elastomer Sealing: Equipped with premium elastomeric seals (Viton / Fluoroelastomer), providing positive leak integrity and broad chemical compatibility with standard industrial gases, fuel gases, and inert blends.
- High-Flow Low-Drop Design: Purpose-built aerodynamic sensor and bypass manifold accommodates high volume flow rates up to hundreds of standard liters per minute (ln/min or SLPM) with negligible restriction to line pressure.
- Advanced Digital Architecture: Features integrated multi-gas and multi-range reconfiguration firmware, empowering maintenance engineers to re-assign gas types and full-scale flow ranges on-site via an independent diagnostic port without sending the unit for factory recalibration.

KEY ADVANTAGES:
- Outstanding Measurement Accuracy: High calibration accuracy of ±0.9% of rate across the primary operating band, combined with exceptional long-term zero stability to virtually eliminate sensor drift.
- Minimal Pressure Loss: Valveless meter design allows full process pressure transmission with negligible restriction, ideal for low-pressure gas utility headers.
- Robust Industrial Construction: Built with a 316L stainless steel wetted path and a rugged, EMI-shielded enclosure engineered for demanding manufacturing plants.

• Manufacturer: Brooks Instrument LLC
• Origin: United States (USA)
• Model Code: SLA5863S2GAA0C2A1
• Product Series: SLA5863 (SLA5800 Series Digital Elastomer Gas Mass Flow Meters)
• Device Function: Mass Flow Meter (Meter-only, valveless configuration)
• 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, LPG...)
• Flow Measurement Range: High-flow range capacity (Up to hundreds or thousands of ln/min N2 equivalent depending on laminar flow element)
• Calibrated 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
• Long-Term Zero Stability: < ±0.5% of F.S. over continuous operational cycles
• Sensor Response Time: < 1.0 second
• Dynamic Range (Turndown): 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 Output 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: Industrial furnace burner gas metering, bioreactor aeration flow measurement, metallurgical heat-treatment gas accounting, and high-flow test bench calibration.