Applied Analytics Chlorine Process Analyzer

Utilizing full-spectrum acquisition, the OMA measures chlorine concentration across a wide range—from high percentage levels to trace ppm—delivering seamless accuracy. The OMA detects the unique absorbance curve of pure Cl₂ and isolates this signature mathematically from the total sample absorbance, directly correlating the curve's intensity with real-time chlorine concentration.

Continuous monitoring of chlorine compounds is essential for maintaining the smooth operation of various industrial processes. A key requirement across all such applications is that the monitoring instrument must withstand the highly corrosive nature of chlorine compounds. Additionally, given the toxicity and/or explosiveness of some of these compounds, chlorine analysis systems must be designed with a strong emphasis on operator safety.

Key Advantages of the OMA Chlorine Analyzer:

• Continuously measures up to four chemical concentrations using dispersive UV-Vis absorbance spectroscopy.
• Solid-state construction with no moving parts—modern design ensures low maintenance.
• Ultra-safe fiber optic design with a dedicated sample flow cell—no exposure of toxic or corrosive sample fluid within the analyzer enclosure.
• Long-lasting xenon light source (average lifespan of 5 years).
• Customized sample conditioning design using Teflon wetted parts, ensuring resistance to long-term corrosion.
• Proven reliability with over a decade of field performance in the most demanding industrial environments.

Applications:

• NCl₃ in CCl₄
• FeCl₃ in ethylene dichloride (EDC)
• TiCl₄ in titanium dioxide pigment production
• VOCl₃ (vanadium oxytrichloride)

Chlorine Absorbance Spectrum:

To measure chlorine concentration, the OMA identifies the distinctive absorbance curve of pure Cl₂ and isolates this structure from the total sample absorbance. In accordance with the Beer-Lambert Law, the OMA correlates the curve’s height directly to the real-time chlorine concentration.

Sampling:

The OMA is designed for direct analysis of hot/wet samples, simplifying the sample system while maintaining high sample integrity. With extensive experience in sampling design, we recognize that while applications may be similar, they are rarely identical. Therefore, we design and build sample conditioning systems on a project-by-project basis, tailored specifically from the process requirements to the final design.

General Specifications:

• Measurement Principle: Dispersive UV-Vis absorbance spectrophotometry
• Detector: nova II™ UV-Vis diode array spectrophotometer
• Spectral Range: 200-800 nm
• Light Source: Pulsed xenon lamp (average lifespan of 5 years)
• Signal Transmission: 600 μm core 1.8-meter fiber optic cables (other lengths available)
• Path Length: Application-dependent
• Sample Conditioning: Custom-designed per application
• Analyzer Calibration: Factory-calibrated with certified fluids when possible; no recalibration required after initial setup; measurement normalized via Auto Zero.
• Reading Verification: Simple verification with samples and self-check diagnostics
• Human Machine Interface: Industrial controller with touch-screen LCD display running ECLIPSE™ Software
• Data Storage: Solid-state drive

Operating Conditions:

• Analyzer Environment: Suitable for indoor or outdoor installation (no shelter required)
• Ambient Temperature: Standard: 0 to 35 °C (32 to 95 °F); Optional: -20 to 55 °C (-4 to 131 °F). For direct sunlight installations, use of a sunshade is recommended to avoid radiative heating.
• Sample Temperature: Standard: -20 to 70 °C (-4 to 158 °F); Optional: up to 150 °C (302 °F) with cooling extensions. For temperatures above 150 °C (302°F), please contact AAI.
• Sample Pressure: Standard flow cell: 206 bar (3000 psi)

Utilities:

• Electrical: 85 to 264 VAC, 47 to 63 Hz
• Power Consumption: 45 watts

Outputs:

• Standard Outputs:
  • 1x galvanically isolated 4-20mA analog output per measured analyte (up to 3; additional available as an upgrade)
  • 2x digital outputs for fault and SCS control
• Optional Outputs: Modbus TCP/IP, RS-232, RS-485, Fieldbus, Profibus, HART

Performance:

• Chlorine Accuracy:
  • 0-100 ppm: ±5 ppm
  • 0-10,000 ppm: ±2% of full scale or 5 ppm*
  • 0-100%: ±2% of full scale
    (*Whichever is larger)

Certifications:

• Standard Design: General Purpose
• Available Options: ATEX, IECEx, EAC, PESO, JPN, KTL. For additional certifications (e.g., CSA, FM), please contact your sales representative.