TOC Analyzer CA79

Summary

Product identification

• Product Name: TOC Analyzer CA79
• Manufacturer: Endress+Hauser Liquid Analysis
• Document Title: TOC Analyzer CA79
• Technical Information (TI) Number: TI01623C/07/EN/02.22-00
• Document Date: 2022-06-30
• Article Number: 71575761

Application

This analyzer is designed for determining total organic carbon (TOC) in ultrapure water applications that meet the following conditions:

• Conductivity < 2 µS/cm
• pH range: neutral

Measuring principle

The analyzer uses UV digestion to oxidize organic substances into CO₂. The resulting increase in conductivity due to CO₂ formation is measured by upstream and downstream sensors. This conductivity change is then converted into a TOC value.

Performance characteristics

• Measured Variable: TOC (total organic carbon)
• Limit of Detection (LOD): 0.1 µg/l (ppb)
• Response Time (t90): 50 s
• Number of measuring channels: 1 to 3, depending on the order version
• Calibration Interval: Calibrated on delivery. Recalibration recommended after replacing components in contact with the process (e.g., pump hose, UV reactor).

Feed water

• Maximum conductivity of sample: 2 µS/cm
• Particle content: Particle-free
• Sample temperature: < 50 °C (122 °F)
• Process pressure: Max. 0.5 bar (7.25 psi); recommended 0.25 bar (3.62 psi)

Product water

• Sample outlet: Depressurized

Electrical

• Supply voltage: 100/240 V AC, 47 - 63 Hz
• Power consumption: Max. 60 W
• Output signal (Measuring channel 1): 0/4 to 20 mA, galvanically isolated
• Output signal (Measuring channel 2, optional): 0/4 to 20 mA, galvanically isolated
• Load (Current outputs): Max. 500 Ω
• Controller input (order option): 24 V (for starting measurement, 1-channel devices only)

Mechanical / hydraulic

• Dimensions: 500 (19.68) x 200 (7.87) mm (Height x Width)
• Weight: Approx. 14 kg (30.86 lb)
• Materials: Stainless steel housing
• Hose specification: Sample hose 1/8 inch, 3.2 mm OD included in connection kit
• Sample flow rate: 14 ml/min.

Environment

• Ambient temperature range: 10 to 45 °C (50 to 113 °F)
• Storage temperature: 2 to 55 °C (35 to 131 °F)
• Relative humidity: 10 to 90 %, non-condensating
• Degree of protection: IP 42 (standard), IP54 (order option)
• Electromagnetic compatibility: EN 61326-1:2013, Class A for Industry
• Electrical safety: EN/IEC 61010-1:2010, Class 1 equipment
• Pollution degree: 2

Operability

• Display: 8" touch screen monitor
• Operating language: English (US)
• Data security: Software meets requirements of 21 CFR, Part 11.

Maintenance

• Maintenance effort: 1 hour per month
• Pump hose replacement: every 6 months
• UV reactor replacement: every 6 months
• UV reactor ballast replacement: every 24 - 36 months
• Pump head replacement: every 36 - 48 months

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Disclaimer: This extraction may miss figures, footnotes, or revisions. Contractual data must match the OEM PDF revision used on the project.

Official datasheet (PDF)

Lenntech datasheet mirror