Thermo Fisher Scientific 1811EL Pure Water Monitor

Description:

The Thermo Scientific 1811EL Pure Water Monitor is used for continuous online monitoring of sodium concentration in ultra-pure water systems. Commonly installed in power generation facilities, semiconductor manufacturing plants, chemical processing systems, and boiler feedwater applications requiring high-purity water analysis. Maintenance teams, water treatment technicians, plant engineers, and system integrators purchase this pure water monitor for routine process monitoring, preventive maintenance, and reliable online sodium analysis.

Applications:

The Thermo Scientific 1811EL Pure Water Monitor is designed for continuous measurement of trace sodium in high-purity water to protect critical process equipment and maintain water quality. It is commonly used for boiler feedwater monitoring, steam cycle chemistry, reverse osmosis systems, ion exchange breakthrough detection, and ultra-pure water production.

Technical Specifications:

• Manufacturer: Thermo Fisher Scientific
• Brand: Thermo Scientific
• Part Number: 1811EL
• Product Type: Pure Water Monitor
• Series: Orion™ 1800 Series
• Measurement Parameter: Sodium (Na⁺)
• Measurement Range: 0.01 ppb to 1000 ppb sodium (higher ranges available upon request)
• Accuracy: ±0.01 ppb or ±2.5% of reading (whichever is greater)
• Response Time: 50% of final reading within 2 minutes
• Display Units: ppb, ppm, mV, Temperature
• Sample Temperature: 5 to 40 °C (41 to 104 °F)
• Sample Pressure: 8 to 100 psi (0.6 to 6.9 bar)
• Sample Flow Rate: 40 mL/min minimum
• Analog Outputs: 0–20 mA or 4–20 mA, Linear or Logarithmic
• Power Requirements: 100/110/115/220/240 VAC, 50/60 Hz
• Typical Applications: Boiler feedwater, steam analysis, reverse osmosis systems, ion exchange monitoring, semiconductor ultrapure water, and power plant water chemistry
• Country of Manufacture: Not specified by the manufacturer.

Common Replacements:

• Thermo Scientific Orion 2111LL Low-Level Sodium Analyzer
• Thermo Scientific Orion 2111XP Sodium Analyzer
• Thermo Scientific Orion 2100 Series Process Water Analyzer