TOC Analyzer CA78

Summary

Product Identification

• Product Name: TOC Analyzer CA78
• Document Title: TOC Analyzer CA78
• Technical Information Document ID: TI01622C/07/EN/02.22-00
• Document Date: 2022-06-30
• Document Number: 71575760

Application

The analyzer is designed for the determination of total organic carbon (TOC) in ultrapure water applications with the following conditions:

• Conductivity < 10 µS/cm
• pH range: neutral

Measuring Principle

The TOC analyzer utilizes UV digestion to oxidize organic substances into CO₂. The resulting increase in conductivity due to the formation of hydrogen carbonate is measured by a pair of electrodes upstream and downstream of the UV radiation, which is then converted to TOC.

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

Operating Limits

• Sample temperature: < 50 °C (122 °F)
• Process pressure: Max. 0.5 bar (7.25 psi); recommended 0.25 bar (3.62 psi)
• Maximum conductivity of sample: Max. 2 µS/cm (Order option: max. 10 µS/cm)

Feed Water Requirements

• Sample requirement: 14 ml/min.
• Sample quality: Particle-free
• Maximum conductivity of sample: Max. 2 µS/cm (Order option: max. 10 µS/cm)

Product Water

Not specified in the extract.

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
• Transmission behavior: Configurable, in the measuring range of 4 to 20 mA (Standby: 3.8 mA)
• Current outputs, active: 0 to 20 mA; according to Namur NE43

Mechanical / Hydraulic

• Dimensions: 200 mm (width) x 500 mm (height) x 290 mm (depth) (approx. 7.87 in x 19.68 in x 11.42 in)
• 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

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 device), IP54 (order option)
• Pollution degree: 2

Operability

• Display: 8" touch screen monitor
• Operating language: English (US)

Maintenance

• Maintenance effort: 1 hour per month
• Maintenance intervals:
  • Replacement of calibration solution - before every calibration
  • Replacement of pump hose - every 6 months
  • Replacement of UV reactor - every 6 months
  • Replacement of UV reactor ballast - every 24 - 36 months
  • Replacement of pump head - every 36 - 48 months
• Calibration interval: Recommended after replacing components in contact with the process.

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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