Liquistation CSF48

Summary

Product identification

Liquistation CSF48 is a stationary sampler designed for automated removal, distribution, and temperature-controlled storage of liquid media. The standard product version includes two 0/4 to 20 mA analog inputs, two binary inputs, and two binary outputs. It is part of the Endress + Hauser Liquid analysis product line.

Application

• Communal and industrial wastewater treatment plants
• Laboratories and water management offices
• Monitoring of liquid media in industrial processes

Operating principle

The Liquistation CSF48 can operate using a vacuum pump, a peristaltic pump, or a sampling assembly.

• Vacuum Pump: Operates in four steps: Blow clear, Intake, Dose, and Drain. Level detection is performed using conductivity sensors or a capacitance sensor for specific media types. Dosing can be performed with or without pressure.
• Peristaltic Pump: Operates in three steps: Rinse, Intake, and Drain. Features a patented medium detection system and automatic suction height detection.
• Sampling Assembly: Involves three steps: Standby, Filling, and Emptying. An optional rinsing valve allows for draining under pressure and cleaning with compressed air or water. Designed for aqueous samples.

Sampling unit configurations

The sampler can be configured as a complete unit for:

• Open channels: Typically includes the controller, a vacuum or peristaltic pump, sample bottles, an optional temperature regulator, and a suction line with a suction head.
• Pressurized pipes: Includes the Liquistation and the Samplefit CSA420 sampling assembly, available in different sample volume configurations.

Online Measurement

The Liquistation CSF48 can be integrated into a measuring system with online sensors, such as those for Nitrate, Conductivity, Oxygen, Turbidity, and pH value/ORP, utilizing Memosens technology.

Sampling with a flow assembly

This setup is used for sampling in pressurized systems and requires a flow rate of 1000 to 1500 l/h. The flow assembly has a ¾" inflow and a 1¼" outflow connection.

Sample distribution and preservation

The sampler supports various bottle combinations and distribution versions. Sample bottles are located in a compartment that can be temperature-controlled.

Bottle groups and distribution versions

Various configurations are available, including:

• 30 liter, PE, direct distribution
• 60 liter, PE, direct distribution
• 25 liter, PE, direct distribution
• 20 liter, PE, direct distribution
• 17 liter, PE, direct distribution
• 13 liter, PE, direct distribution
• 5 liter, glass, preparation
• 3.8 liter, glass, direct distribution
• 3 liter, PE, plate distribution
• 2 liter, PE, plate distribution
• 1 liter, PE, plate distribution
• 1 liter, glass, plate distribution
• 13 liter, PE, plate distribution
• 2 liter, PE, direct distribution
• 1 liter, PE, direct distribution
• 1.8 liter, glass, plate distribution

Sampling control

Various sampling control methods are available:

• Flow curve
• Time-proportional sampling (CTCV)
• Volume-proportional sampling (VTCV) with optional time override
• Flow-proportional sampling (CTVV) (peristaltic pump version only)
• Event-controlled sampling

Performance characteristics

• Dosing volume:
  • Vacuum pump: 20 to 350 ml
  • Peristaltic pump: 10 to 10000 ml
  • Sampling assembly: 10, 30, or 50 ml
• Dosing accuracy:
  • Vacuum pump: ±5 ml or 5 % of set volume
  • Peristaltic pump: ±5 ml or 5 % of set volume
  • Sampling assembly: ±2 ml
• Repeatability: 5 %
• Intake speed: > 0.5 m/s (for ≤ 13 mm ID) or > 0.6 m/s (for 10 mm ID), as per relevant standards.
• Suction height:
  • Vacuum pump: Max. 6 m or max. 8 m
  • Peristaltic pump: Max. 8 m
• Hose length: Max. 30 m
• Temperature control (optional): Sample temperature range of 2 to 20 °C, factory setting of 4 °C. Cooling rate: 4 liters from 20 °C to 4 °C in under 210 minutes. Temperature constancy at 4 °C within an operating range of -15 to 40 °C.

Mounting

• Mounting instructions: Requires a level surface and secure fastening. Allow for at least 150 mm clearance from walls for air circulation. Avoid direct exposure to heat sources or strong magnetic fields.
• Mounting conditions: Suction line should have a downward gradient. Avoid aggressive gases and siphoning effects.

Environment

• Ambient temperature range:
  • With cooling module: -20 to 40 °C
  • Without cooling module: 0 to 40 °C
  • With ASA+PC or stainless steel housing: -20 to 40 °C
  • With plastic polystyrene housing: 0 to 40 °C
• Storage temperature: –20 to 60 °C
• Relative humidity: 10 to 95 % (non-condensing)
• Degree of protection:
  • Front dosing compartment: IP 54
  • Rear dosing compartment: IP 33
  • Front panel with display: IP 65
  • Sample compartment: IP 54
  • Overall device: IP 33
• Electromagnetic compatibility (EMC): As per EN 61326-1:2013, Class A for Industry.

Process

• Medium temperature range: 2 to 50 °C
• Process pressure range: Unpressurized open channel, max. 0.8 bar piping, max. 6 bar for sampling assembly.
• Medium properties: Specific limitations apply for vacuum pump operation (e.g., free of abrasive substances, suitable for foaming media, low conductivity). Peristaltic pump and sampling assembly require media to be free of abrasive substances. Distributor version not suitable for media with >1% solids content.

Mechanical construction

• Dimensions: See provided diagrams.
• Weight: See provided diagrams.
• Materials: Various housing materials are available; consult the datasheet for specific details on material compatibility.

Inputs

• Analog inputs: 2 (standard), passive/active, 0/4 to 20 mA, galvanically isolated.
• Binary inputs: 2 (standard) + 4 (optional). Passive, 12 to 30 V.
• Digital inputs: 1 to 4 for sensors with Memosens protocol (optional).

Outputs

• Binary outputs: 2 (standard) + 2 (optional), open collector, max. 30 V, 200 mA.
• Current outputs: Up to 2 x 0/4 to 20 mA (standard), active, galvanically isolated. Additional current outputs (2 to 6, or 8) are available depending on the configuration. HART communication is available on current output 1:1.

Communication

• Service interface: Accessible via front panel connection (optional). Commubox FXA291 required for PC communication.
• Communication protocols: HART, PROFIBUS DP, Modbus TCP or RS485, PROFINET, EtherNet/IP. Web server functionality is also available.

Power supply

• Supply voltage: 100 to 120/200 to 240 V AC ±10 %, 50/60 Hz, or 24 V DC +15/‐9 %.
• Power consumption: 290 VA (pump versions), 240 W (24V version).
• Mains fuse: T3.15A (230V), T10A (24V), T10A (battery backup).

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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