Liquistation CSF28

Summary

Product identification

Liquistation CSF28 Automatic stationary sampler for liquid media.

Applications

The Liquistation CSF28 is suitable for time- and flow-controlled sampling in:

• Municipal and industrial wastewater treatment plants:
  • Self-monitoring
  • Process monitoring
  • Monitoring of dischargers
  • Monitoring of wastewater systems
• Authorities and water management offices:
  • Water pollution control and water quality
  • Monitoring of dischargers

Benefits

• Intended purpose: Application-specific operation, e.g., filling capabilities.
• Easy commissioning: Wizard-guided setup for quick customization.
• Reliable and robust sampling: Utilizes time-tested components and comprehensive diagnostics.
• Reduced maintenance: Tool-free removal of medium-contact parts for easy cleaning.
• Basic monitoring functions: Definition of time- or flow-controlled sampling routines.
• Cutting-edge cooling technology: Sustainable and environmentally friendly sample storage.
• Full compliance: Meets standards such as ISO 5667.

Device principle

The sampler operates using either a vacuum pump or a peristaltic pump.

Mode of operation with a vacuum pump

Sampling involves four steps: Blow clear, Intake, Dose, and Drain. Sample intake is controlled by conductivity probes in the dosing system. Dosing can occur with or without pressure, with sample volume set by adjusting the dosing tube scale (white 'A' for no pressure, blue 'B' for pressure).

Mode of operation with a peristaltic pump

Sampling involves three steps: Rinse, Intake, and Drain. The pump draws in medium until the medium detection system responds, then the sample volume is calculated. The system can automatically detect suction height, eliminating the need for manual input.

Sampling unit

A complete sampling unit can include a controller, pump (vacuum or peristaltic), sample bottles, a temperature regulator for the sample compartment, and a suction line with a suction head. Various bottle combinations are available, including 1x 30 liters, 1x 60 liters, 4x 17 liters, 4x 13 liters, 12x 3 liters, and 24x 1 liter.

Sample temperature regulation

The sample compartment temperature can be adjusted via the controller. The factory setting is 4 °C (39 °F). The cooling module operates with an automatic defrost system. The cooling rate is specified as 4 liters of water at 20 °C (68 °F) cooling to 4 °C (39 °F) in under 210 minutes. Temperature constancy is maintained at 4 °C (39 °F) within an operating range of -20 to 40 °C (-4 to 104 °F).

Sampler housing

The housing is made from high-grade plastic ASA+PC V0, suitable for outdoor installations.

Reliability

Memory

• Ring memories (FIFO): Stores analog values, events, and sample statistics.
• Program memory: Max. 3 programs.
• Data logbooks: Up to 8 logbooks, each with a maximum of 150,000 entries. Includes calibration, hardware, version, operations, and diagnostic logbooks.
• FieldCare: Configuration and asset management software.
• SD card: For software updates, data storage, and configuration transfer.

Safety

• Real-time clock: Battery-backed for accurate time stamping.
• Data security: Settings and logbooks stored in non-volatile memory.

Input

• Binary input, passive: 12 to 30 V, galvanically isolated. Minimum pulse width: 100 ms.
• Temperature input: Measuring range -30 to 70 °C (-20 to 160 °F). Accuracy ± 0.5 K. Type: Pt1000.
• Analog input, passive/active: Span 0/4 to 20 mA, galvanically isolated. Accuracy ±0.5 % of measuring range.

Output

• Communication: 1 service interface (Commubox FXA291 accessory required for PC communication).
• Relay output: 1 changeover contact, coupled with binary output. Maximum load: Alarm relay 2.0 A. Switching capacity: 5 A at 230 V AC or 24 V DC.

Power supply

• Supply voltage: 100 to 120/200 to 240 V AC ±10 %, 50/60 Hz.
• Power consumption: 290 VA for both vacuum and peristaltic pump versions.
• Cable entries: 1 x M25, 1 x M20. Permitted cable diameter: M20 (7-13 mm), M25 (9-17 mm).
• Mains fuse: T3.15A (for 230V).

Performance characteristics

Sampling methods

• Vacuum pump: Time-paced, Flow-paced.
• Peristaltic pump: Time-paced, Flow-paced, Flow proportional sampling/time override (CTVV).

Dosing volume

• Vacuum pump: 20 to 350 ml.
• Peristaltic pump: 10 to 10000 ml.

Dosing accuracy

• Vacuum pump: ± 5 ml or 5 % of set volume.
• Peristaltic pump: ± 5 ml or 5 % of set volume.

Repeatability

5 %

Intake speed

• 0.5 m/s for ≤ 13 mm (1/2 in) ID.

• 0.6 m/s for 10 mm (3/8 in) ID.

Suction height

• Vacuum pump: Max. 6 m (20 ft).
• Peristaltic pump: Max. 8 m (26 ft).

Hose length

Max. 30 m (98 ft).

Installation

Dimensions

See the provided diagrams for detailed dimensions in mm (in).

Installation conditions

• Route the suction line with a downward gradient.
• Avoid mounting in areas with aggressive gases.
• Do not route the suction line with an upward gradient.
• Erect on a level surface and secure firmly.
• Protect against additional heating, mechanical vibrations, and strong magnetic fields.
• Ensure free air circulation at side panels (at least 150 mm clearance from walls).
• Do not erect directly above the inlet channel of a wastewater treatment plant.

Environment

• Ambient temperature range (with cooling module): -20 to 40 °C (0 to 104 °F).
• Storage temperature: –20 to 60 °C (–4 to 140 °F).
• Electrical safety: In accordance with EN 61010-1, protection class I.
• Relative humidity: 10 to 95 %, non-condensing.
• Degree of protection: Front dosing compartment: IP 54, Rear dosing compartment: IP 33, Front panel: IP 65, Sample compartment: IP 54. Overall device: IP33.
• Electromagnetic compatibility (EMC): As per EN 61326-1:2013, Class A for Industry.

Process

• Medium temperature range: 2 to 50 °C (36 to 122 °F).
• Process pressure range: Unpressurized, open channel.
• Medium properties: Sample media must be free of abrasive substances. Material compatibility of wetted parts should be considered.
• Process connection:
  • Vacuum pump: Intake hose ID 10 mm (3/8 in) and 13 mm (1/2 in).
  • Peristaltic pump: Intake hose ID 10 mm (3/8 in).

Mechanical construction

Dimensions

See the provided diagrams for detailed dimensions in mm (in).

Weight

Plastic version with refrigeration: 101 kg (223 lbs).

Materials

• Non-wetted parts: Cabinet housing (Plastic ASA+PC V0), Sample compartment inner lining (Plastic PP), Insulation (Plastic EPS "Neopor®").
• Wetted parts: Varies by pump type and component; includes Plastic PP, Silicone, Stainless steel V4A (1.4404), PMMA, PVC, EPDM.

Operability

• Operating concept: Intuitive navigation with plain-text display.
• Display: Graphic display (240 x 160 pixel) with backlight and red background for alarms. Transflective technology for contrast. LCD with 160 x 240 pixels, 4 operating keys, and navigator.
• On-site operation: Menu-guided operation.
• Remote operation: Via Web server, FieldCare, or Webbrowser.
• Communication: 1 service interface, Commubox FXA291 for PC communication.

Accessories

A range of accessories are available, including bottle trays, distributor plates, various sizes of PE bottles, complete suction lines (PVC or EPDM), terminated hoses for vacuum and peristaltic pumps, retrofit kits, suction heads, and communication software.

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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