Liquiline System CA80AM

Summary

Product Identification

The Liquiline System CA80AM is a wet-chemical analyzer designed for the continuous determination of ammonium concentrations in liquid media. It utilizes a colorimetric measuring principle.

Application Areas

This analyzer is suitable for:

• Monitoring and optimizing treatment efficiency in municipal and industrial wastewater treatment plants.
• Monitoring and optimizing aeration basins.
• Monitoring wastewater treatment plant outlets.
• Controlling industrial wastewater treatment processes.

The "Cabinet, outdoor version" product variant allows for outdoor installation and operation.

Key Features and Benefits

• Integrated controller with up to 2 measuring channels.
• Supports digital Memosens technology for sensors.
• Upgradeable to a measuring station by connecting up to 4 Memosens sensors.
• Available in a cooled version for extended reagent lifespan.
• Supports digital fieldbuses including PROFINET, PROFIBUS DP, Modbus TCP, Modbus RS485, and Ethernet IP.
• Includes an integrated web server.
• Designed for simple, tool-free maintenance.
• Reliability enhanced by Memosens technology, offering non-contact digital signal transmission, watertightness, and lab calibration capabilities.
• Modular design allows for easy retrofitting of extension modules.
• Data logging capabilities include analyzer data logbooks, calibration logbooks, hardware logbooks, version logbooks, event logbooks, operations logbooks, and diagnostic logbooks.
• Supports mathematical functions for calculating virtual process values.
• Configuration and asset management through FieldCare software.
• Data storage and transfer via SD card.

Measuring Principle

The analyzer employs the Indophenol blue method for the photometric determination of ammonium. In an alkaline solution, sodium dichloroisocyanurate and sodium salicylate react with ammonium to form a green/blue dye, as defined by ISO 7150-1. The absorption is measured at defined wavelengths and is proportional to the ammonium concentration. A reference measurement is performed to compensate for interference influences.

Measuring System

A complete measuring system includes the Liquiline System CA80AM analyzer, reagents, cleaner, and standard solutions (ordered separately), and optional sample conditioning units.

Optional sample conditioning units include:

• Microfiltration (Liquiline System CAT810): Pressure pipe sampling and filtration with a 50 µm sieve filter. Features backflushing with compressed air or water.
• Membrane filtration (Liquiline System CAT820): Ceramic filter cartridge (0.1 µm or 0.4 µm pore size) or plate filter (0.04 µm pore size). Communicates via Memosens protocol and can be controlled by the CA80. Features backflushing with compressed air.
• Membrane filtration (Liquiline System CAT860): Ceramic membrane filter candle (0.1 µm or 0.4 µm pore size). Communicates via Memosens protocol and can be controlled by the CA80. Features automatic backflush with cleaning solution and compressed air.

Input

• Measured Variables: NH₄-N (ammonium nitrogen), NH₄⁺ (ammonium), NH₃ (ammonia equivalent) in mg/l or ppm.
• Measuring Ranges:
  • CA80AM-**A1/S4: 0 to 20 mg/l NH₄-N
  • CA80AM-**A2/S5: 0.5 to 50 mg/l NH₄-N
  • CA80AM-**A3/S6: 1 to 100 mg/l NH₄-N
• Optional Dilution Function: Allows for configurable measuring ranges and dilution factors, extending the effective measuring range.
• Types of Input:
  • 1 or 2 measuring channels.
  • 1 to 4 digital sensor inputs for Memosens sensors (optional).
  • Analog current inputs (optional).
  • Binary inputs (optional).
• Input Signal: 2 x 0/4 to 20 mA (optional), passive, potentially isolated.
• Current Input Specification: Span > 0 to 20 mA, Linear signal characteristic, Internal resistance (non-linear), Test voltage 500 V.
• Memosens Cable Specification: Memosens data cable CYK10 or sensor fixed cable, up to 100 m (330 ft) cable length.

Output

• Output Signal:
  • Standard: 2 x 0/4 to 20 mA, active, potentially isolated.
  • Optional: 4 x 0/4 to 20 mA, active, potentially isolated.
  • Optional: 6 x 0/4 to 20 mA, active, potentially isolated.
  • Binary outputs.
• PROFIBUS DP/RS485: Signal encoding EIA/TIA-485, up to 12 MBd data transmission rate, galvanically isolated.
• Modbus RS485: Signal encoding EIA/TIA-485, up to 115,200 baud data transmission rate, galvanically isolated.
• Web server and Modbus TCP: Signal encoding IEEE 802.3 (Ethernet), 10/100 MBd data transmission rate, galvanically isolated.
• EtherNet/IP: Signal encoding IEEE 802.3 (Ethernet), 10/100 MBd data transmission rate, galvanically isolated.
• PROFINET: Signal encoding IEEE 802.3 (Ethernet), 100 MBd communication type, RT_CLASS_1.
• Signal on Alarm: Adjustable as per NAMUR Recommendation NE 43 (failure current 0 to 23 mA).
• Load: Max. 500 Ω.
• Current Outputs: Span 0 to 23 mA, Linear signal characteristic, Output voltage max. 24 V.
• Relay Outputs: 1 alarm relay (changeover contact) standard, 2 or 4 optional. Maximum load: 0.5 A (alarm relay), 2.0 A (other relays).

Power Supply

• Supply Voltage: 100 to 120 V AC / 200 to 240 V AC or 24 V DC (not for "Outdoor" version), 50 or 60 Hz.
• Power Consumption: Varies by version (e.g., 130 VA + 660 VA per hose heater for non-outdoor versions; 680 VA + 660 VA per hose heater for "Outdoor" version). 24-V version: max. 105 W.
• Fuse: 5 x 20 mm 10 A/250 V fine-wire fuse for hose trace heating.

Mechanical Construction

• Dimensions: See figures 20, 21, and 22 for closed version, open version, and version with base.
• Weight: Varies by configuration (e.g., Cabinet version with cooling module: 42 kg; Analyzer stand without cooling module: 72.5 kg).
• Materials:
  • Parts not in contact with medium: ASA + PC, PP, Safety glass (coated), EPP, Powder-coated sheet steel.
  • Parts in contact with medium: PP, TPE, FKM, C-Flex, NORPRENE, Borosilicate glass, FFKM, PTFE, PVDF, PMMA, Stainless steel 1.4404 (V4A), PEEK.
• Process Connection: Plug-in connector for rigid hoses (OD 4 mm) or hose barb for flexible hoses (ID 1.6 mm) for sample inlet; hose barb for flexible hoses (ID 3.2 mm) for dilution water; hose barb for flexible hoses (ID 13 mm) for outlet.
• Hose Entries: 4 x bores for M32.

Performance Characteristics

• Maximum Measured Error: Varies by measuring range. For example, for 0 to 20 mg/l NH₄-N, the error is 2% of display value + 0.05 mg/l NH₄-N.
• Repeatability: Varies by measuring range. For example, for CA80AMxx-A1, -A2, -A3, it is ± 2% of display value + 0.05 mg/l NH₄-N.
• Measuring Interval: Continuous (approx. 9 min), adjustable ≥ 10 min.
• Sample Requirement: 16 ml/measurement (without dilution); 10.3 to 16 ml sample + 16 to 19.6 ml dilution water (with dilution module).
• Reagent Requirement: Approx. 70 μl per reagent per measurement (for specific order versions).
• Calibration Interval: 1 h to 90 days, depending on application.
• Maintenance Interval: Every 3 to 6 months, depending on application.

Environment

• Ambient Temperature Range:
  • Standard housing versions: +5 to +40 °C (41 to 104 °F).
  • Outdoor version: -20 to +40 °C (-4 to 104 °F).
• Storage Temperature: –20 to 60 °C (–4 to 140 °F).
• Relative Humidity: 10 to 95 %, non-condensing.
• Degree of Protection: IP55 (cabinet, analyzer stand), TYPE 3R (cabinet, analyzer stand).
• Electromagnetic Compatibility: EN 61326-1, class A for industrial areas.
• Electrical Safety: EN/IEC 61010-1:2010, Class I equipment.
• Pollution Degree: Pollution level 2.
• Sample Temperature: 4 to 40 °C (39 to 104 °F).
• Sample Consistency: Low solids content (turbidity < 50 NTU), aqueous, homogenized.

Operability

• Operation Concept: Intuitive operation with navigator and soft keys, plain-text display.
• Display: Graphic display (240 x 160 pixel) with backlight and red background for alarms.
• Remote Operation: Via HART, PROFIBUS DP, Modbus RS485, or Ethernet (web server/Modbus TCP/PROFINET/Ethernet/IP).
• Language Packages: Multiple languages available, including English, German, Chinese (Simplified, PR China), French, and Spanish.

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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)

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