Liquiline System CA80SI

Summary

Product Identification

The Liquiline System CA80SI is a wet-chemical analyzer designed for the continuous determination of silica concentration in ultrapure water and boiler feedwater.

Applications include:

• Ultrapure water
• Boiler feedwater
• Steam and condensate analysis
• Reverse osmosis
• Desalination systems

Key Features:

• Integrated controller with up to 6 measuring channels
• Digital Memosens technology
• Easy upgrade to a measuring station by connecting up to 4 Memosens sensors
• Digital fieldbus systems (PROFINET, PROFIBUS DP, Modbus TCP, Modbus RS485, Ethernet IP) and web server
• Simple, tool-free maintenance

Measuring Principle

The analyzer uses a colorimetric method, specifically the heteropoly blue method, for photometric silica determination.

1. Silicate and phosphate react with molybdate in an acidic medium to form silicomolybdic and phosphomolybdic acid complexes.
2. Citric acid is added to destroy the phosphate complex.
3. An amino acid reduces the silicomolybdic acid to silicomolybdic blue.
4. Absorption measurement is then directly proportional to the silica concentration.

Cross-sensitivity:

• No cross-sensitivities observed up to:
  • 2000 mg/l (ppm) NaCl
  • 25°dH Hardness (CaCl₂)
  • 10 mg/l (ppm) PO₄ (measurement error < 4 µg/l (ppb))
• pH range: 4 to 12 for concentrations up to 500 µg/l (ppb)
• pH range: 5 to 12 for concentrations > 500 to 5000 µg/l (ppb)

Input

Measured Variables: SIO₂ [mg/l, µg/l, ppm, ppb]

Measuring Range:

• **CA80SI-*AH: 0 to 500 µg/l (ppb)
• **CA80SI-*AJ: 0 to 5000 µg/l (ppb)

Types of Input:

• 1, 2, 4, or 6 measuring channels (analyzer main parameter)
• 1 to 4 digital sensor inputs for sensors with Memosens protocol (optional)
• Analog current inputs (optional)
• Binary inputs (optional)

Input Signal:

• Current input, passive: 2 x 0/4 to 20 mA (optional), potentially isolated.
  • Span: > 0 to 20 mA
  • Signal characteristic: Linear
  • Internal resistance: Non-linear
  • Test voltage: 500 V

Cable Specification (for optional sensors with Memosens technology):

• Cable type: Memosens data cable CYK10 or sensor fixed cable
• Cable length: Max. 100 m (330 ft)

Output

Output Signal (depending on version):

• 2 x 0/4 to 20 mA, active, potentially isolated (standard)
• 4 x 0/4 to 20 mA, active, potentially isolated (with 2 additional analog outputs)
• 6 x 0/4 to 20 mA, active, potentially isolated (with 4 additional analog outputs)
• Binary outputs

Communication Protocols:

• PROFIBUS DP/RS485: EIA/TIA-485, PROFIBUS DP-compliant acc. to IEC 61158. Data transmission rates from 9.6 kBd to 12 MBd. Galvanic isolation: Yes.
• Modbus RS485: EIA/TIA-485. Data transmission rates from 2,400 to 115,200 baud. Galvanic isolation: Yes.
• Web server and Modbus TCP: IEEE 802.3 (Ethernet). Data transmission rate 10/100 MBd. Galvanic isolation: Yes. Connection: RJ45, M12 optional.
• EtherNet/IP: IEEE 802.3 (Ethernet). Data transmission rate 10/100 MBd. Galvanic isolation: Yes. Connection: RJ45, M12 optional.
• PROFINET: IEEE 802.3 (Ethernet). Communication type 100 MBit/s. Conformance Class B. Netload Class II. Cycle times from 32 ms. Galvanic isolation: Yes. Connection: RJ45.

Signal on Alarm: Adjustable, as per NAMUR Recommendation NE 43. Failure current from 0 to 23 mA. Factory setting: 21.5 mA.

Current Outputs (active):

• Load: Max. 500 Ω
• Output voltage: Max. 24 V
• Transmission behavior: Linear
• Span: 0 to 23 mA

Relay Outputs:

• Relay types: 1 single-pin changeover contact (alarm relay), 2 or 4 single-pin changeover contacts (optional).
• Maximum load: Alarm relay: 0.5 A; Other relays: 2.0 A.
• Switching capacity varies by voltage and load. Minimum load typical: 100 mA at 5 V DC.

Electrical

Power Supply:

• Supply voltage: 100 to 120 V AC / 200 to 240 V AC, 50 or 60 Hz.
• Fieldbus connection supply voltage: Not applicable.

Power Consumption:

• Typically 60 VA
• Max. 1250 VA (under specified conditions: sample flow rate 80 ml/min, continuous measuring interval, sample and ambient temperature 25 °C, supply voltage 230 V).

Electrical Safety: According to EN/IEC 61010-1:2010, Class I equipment. Low voltage: overvoltage category II. For installations up to 2000 m (6500 ft) above MSL.

Pollution Degree: Pollution level 2.

Mechanical / Hydraulic

Dimensions:

• Enclosed installation: 530 (W) x 463 (H) x 793 (D) mm (20.87 x 18.23 x 31.22 in)
• Open installation: 530 (W) x 793 (H) x 417 (D) mm (20.87 x 31.22 x 16.42 in)
• With base: 654 (W) x 1723 (H) x 930 (D) mm (25.74 x 67.83 x 36.61 in)

Weight:

• Cabinet version: 40 kg (88.2 lbs)
• Open installation: 32 kg (70.6 lbs)
• Analyzer stand: 73 kg (161 lbs)

Materials:

• Parts not in contact with medium: ASA + PC, PP, Safety glass (coated), EPP, Powder-coated sheet steel.
• Parts in contact with medium: EPDM, POM, Stainless steel 1.4401, FKM, PP, PVDF, Stainless steel 1.4408, PTFE, PC (black), PMMA, PVC, PPS, Stainless steel 1.4301, C-Flex, NORPRENE, PEEK, Polyurethane, PVC, POM.

Process Connection:

• Sample inlet: Plug-in connector for rigid hoses with OD 6 mm
• Sample outlet: Plug-in connector for rigid hoses with OD 8 mm
• Cuvette outlet: Hose barb for flexible hoses with ID 13 mm

Hose Entries: 4 x bores for M32 for sample inflow and outflow.

Performance Characteristics

Maximum Measured Error:

• Concentrations < 200 µg/l: 1.0 µg/l (ppb) or 2% of measured value (typically)
• Concentrations ≥ 200 µg/l: 5% of measured value (typically)

Limit of Detection (LOD): 0.5 µg/l (ppb)

Repeatability:

• Concentrations < 500 µg/l: 0.5 µg/l (ppb) or ± 1% of measured value
• Concentrations ≥ 500 µg/l: 1% of measured value

Measuring Interval: Continuous (approx. 10 min), adjustable ≥ 10 min. Factory setting: 20 min.

Number of Measuring Channels: 1, 2, 4, or 6 channels.

Sample Requirement: > 140 ml (4.73 fl oz)/measurement, depending on flow.

Reagent Requirement: 200 µl per reagent per measurement for intervals ≥ 15 minutes. A 1000 ml reagent set lasts approx. 65 days at a 20 min interval.

Standard Requirement: Approx. 140 ml (4.73 fl.oz) per calibration. A 2.5 l standard bottle lasts approx. 65 days at a 96 h calibration interval.

Calibration Interval: 1 to 99 days.

Maintenance Interval: Every 3 to 6 months.

Environment

Ambient Temperature Range: +5 to +40 °C (41 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.

Process

Sample Temperature: 5 to 45 °C (41 to 113 °F) Process Pressure (abs.): 2 to 6 bar (29 to 87 psi). Recommended: 2.5 to 4 bar (36.3 to 58 psi). Sample Flow Rate: 60 to 250 ml/min (2.0 to 8.5 fl.oz/min). Recommended: 70 ml/min (2.4 fl.oz/min). Consistency of the Sample: Particle-free.

Disclaimer

This summary is based on extracted text and may not capture all details, figures, footnotes, or revisions from the original OEM PDF datasheet. Contractual data must always be verified against the specific revision of the OEM PDF used for the project.

Official datasheet (PDF)

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