Analyser Manufacturers

Typical applications

Carrier Gas Flow Control for Gas Chromatography (GC)

Gas chromatography relies on a stable carrier gas flow to ensure accurate separation and detection. Even minor fluctuations can affect retention times and peak resolution. Modern GC systems require precise, repeatable flow control across a wide range of operating conditions.

Relevant products:

• Alicat Mass Flow Controllers (MC Series) – Provide ultra-fast response and ±0.6% accuracy for carrier gas control. Their multi-parameter measurement (flow, pressure, temperature) ensures consistent performance.

  Key benefits:

  • Wide turndown ratio for multiple methods
  • Digital protocols for easy integration
  • Compact design for analyser OEMs

Sample Dilution and Blending for Analytical Instruments

Analytical instruments often require precise blending of sample gases with diluents to achieve target concentrations. This is critical for calibration, emissions testing, and trace analysis.

Relevant products:

• Alicat Multi-Gas Controllers (MCS-Series) – Enable accurate blending of multiple gases with real-time ratio control.

• Key benefits:

  • Up to 130 preloaded gases and mixtures
  • Closed-loop control for stability
  • Reduces need for external mixing hardware

Calibration Gas Delivery for Analysers

Calibration ensures analyser accuracy and compliance with regulatory standards. Delivering calibration gases at stable flow and pressure is essential for repeatable results.

Relevant products:

• Alicat Pressure Controllers (PC Series) – Maintain constant pressure during calibration cycles, preventing drift.

• Key benefits:

  • Fast response for automated sequences
  • High accuracy for trace-level calibration
  • Compatible with corrosive gases

Humidity and Dew Point Control in Sampling Systems

Moisture can affect analyser accuracy and damage sensitive components. Controlling humidity and dew point in sampling lines ensures reliable measurements and prevents condensation.

Relevant products:

• Humidity & Dew Point Sensors – Provide real-time monitoring of moisture levels in gas streams

• Key benefits:

  • ISO 8573 compliance for compressed air
  • Integration with SCADA/BMS systems
  • Prevents sample degradation

Pressure Regulation for Detector and Column Protection

Analytical detectors and columns require stable pressure to maintain performance and prevent damage. Pressure fluctuations can lead to baseline drift and poor reproducibility.

Relevant products:

• Steriflow Low-Flow Regulators – Deliver precise pressure control for sensitive analytical components.

• Key benefits:

  • Compact design for analyser panels
  • High repeatability for critical applications
  • Clean, stable operation

Mass Flow Measurement in Gas Mixing Systems

Gas mixing systems for analysers require accurate flow measurement to maintain correct ratios and ensure calibration integrity.

Relevant products:

• CODA Coriolis Mass Flow Meters – Provide direct mass measurement unaffected by temperature or pressure changes.

• Key benefits:

  • High accuracy for low-flow applications
  • Ideal for specialty gas blending
  • Compact footprint for OEM integration

Leak Testing of Analytical Components and Assemblies

Leak integrity is critical for analytical systems to prevent contamination and ensure safety. Leak testing requires precise flow and pressure control under vacuum or positive pressure.

Relevant products:

• Alicat Pressure Controllers – Automate pressure decay or vacuum hold tests for leak detection

• Key benefits:

  • Fast, stable control for repeatable results
  • Digital logging for compliance
  • Reduces manual intervention

Analyser Flow Control & Monitoring

Analytical instruments such as gas chromatographs, TOC analysers, and bioreactor off-gas analysers require precise and visible flow control for carrier gases or sample streams. Operators need a simple, reliable way to verify flow at the point of use without relying solely on electronic sensors. King rotameters provide a cost-effective, robust solution for these applications, ensuring accurate sample delivery and protecting sensitive analyser components.

Relevant products:

• King Instrument Rotameters – These variable area flow meters offer direct visual indication of flow, making them ideal for analyser panels and skid-mounted systems. They are available in glass, acrylic, or metal tube designs to suit different media and pressure conditions.

• Key benefits:

  • Clear visual flow confirmation – Quick verification without electronics
  • Compact, panel-mount options – Perfect for analyser cabinets
  • Wide material selection – Compatible with corrosive gases and liquids
  • Low maintenance – Simple design with long service life

Vacuum and Backfill Control for Analytical Chambers

Analytical techniques such as mass spectrometry require precise vacuum control and controlled backfill for sample introduction.

Relevant products:

• Alicat Vacuum-Compatible Controllers – Provide stable flow and pressure control under vacuum conditions.

• Key benefits:

  • Handles ultra-low pressures
  • Fast response for dynamic processes
  • Protects sensitive instrumentation