Liquisys M CLM223-253

Summary

Product identification

The Liquisys M CLM223/253 is a transmitter for conductive and inductive sensors, designed for applications including:

• Ultrapure water
• Water treatment
• Ion exchanger and reverse osmosis
• Cooling water desalination
• Wastewater

Operating limits

• Ambient temperature range: -10 to +55 °C (14 to 131 °F)
• Storage temperature: -25 to +65 °C (-13 to 149 °F)
• Relative humidity: 10 to 95%, not condensing
• Degree of contamination: Suitable for pollution degree 2
• Electrical safety: Overvoltage category II for installations up to 2000 m (6500 ft) above MSL

Feed water

The device is suitable for various water treatment applications.

Product water

The transmitter can be used for ultrapure water monitoring according to USP (United States Pharmacopoeia) and EP (European Pharmacopoeia) standards, including monitoring of "Water for Injection" (WFI), "Highly Purified Water" (HPW), and "Purified Water" (PW).

Electrical

• Supply voltage:
  • 100/115/230 V AC +10/-15 %, 48 to 62 Hz
  • 24 V AC/DC +20/-15 %
• Power supply via fieldbus:
  • HART: Not applicable (active current outputs)
  • PROFIBUS PA: 9 V to 32 V, max. 35 V
  • PROFIBUS DP: 9 V to 32 V, max. 35 V
• Power consumption: Max. 7.5 VA
• Mains fuse: Fine-wire fuse, semi-delay 250 V/3.15 A

Input

• Measured values: Conductivity, Resistivity, Temperature, Concentration
• Measuring ranges:
  • Conductivity (conductive): 0 to 600 mS/cm (uncompensated)
  • Conductivity (inductive): 0 to 2000 mS/cm (uncompensated)
  • Resistance: 0 to 200 MΩcm
  • Concentration: 0 to 9999 (%, ppm, mg/l, TDS)
  • Temperature: -35 to +250 °C (-31 to 482 °F)
• Cell constant: Configurable, k = 0.0025 to 99.99 cm⁻¹
• Measuring frequency:
  • Conductivity, resistance (conductive): 170 Hz to 2 kHz
  • Conductivity (inductive): 2 kHz
• Connectable temperature sensors: Pt 100, Pt 1000, NTC 30K
• Binary inputs:
  • Voltage: 10 to 50 V
  • Current consumption: Max. 10 mA
• Current input: 4 to 20 mA, galvanically isolated, Load: 260 Ω for 20 mA

Output

• Output signal: 0/4 to 20 mA, galvanically isolated, active
• HART:
  • Signal encoding: Frequency Shift Keying (FSK) + 0.5 mA via current output signal
  • Data transmission rate: 1200 baud
• PROFIBUS PA:
  • Signal encoding: Manchester Bus Powered (MBP)
  • Data transmission rate: 31.25 kBit/s, voltage mode
• PROFIBUS DP:
  • Signal encoding: RS485
  • Data transmission rate: 9.6 kBd to 1.5 MBd
• Signal on alarm: 2.4 or 22 mA in the event of an error
• Load: Max. 500 Ω
• Signal resolution: Max. 700 digits/mA
• Separation voltage: Max. 350 VRMS / 500 V DC
• Auxiliary voltage output: Output voltage: 15 V ± 0.6 V, Output current: Max. 10 mA
• Contact outputs:
  • Switching current: Max. 2 A (ohmic or inductive load)
  • Switching voltage: Max. 250 V AC, 30 V DC
  • Switching power: Max. 500 VA AC, 60 W DC

Performance characteristics

• Reference temperature: 25 °C (77 °F)
• Measured value resolution:
  • Conductivity: Dependent on measured value, e.g., 0.001 μS/cm for 0 to 1.999 μS/cm and k ≤ 0.5 cm⁻¹
  • Temperature: 0.1 °C
• Maximum measured error:
  • Display (Conductivity/Resistance): Max. 0.5 % of measured value ± 4 digits
  • Display (Temperature): Max. 1.0 % of measuring range
  • Signal output (Conductivity/Resistance): Max. 0.75 % of current output range
  • Signal output (Temperature): Max. 1.25 % of measuring range
• Repeatability: Max. 0.2% of measured value ± 2 digits
• Temperature compensation:
  • Range: -35 to +250 °C (-31 to 482 °F)
  • Types: Uncompensated, linear, NaCl, table. For conductive only: ultrapure water NaCl, ultrapure water HCl.
• Offset (Temperature): ±5 °C for adjusting the temperature display

Mechanical / hydraulic

• Degree of protection:
  • Field device: IP 65 / NEMA 4X
  • Panel-mounted device: IP 54 (front), IP 30 (housing)
• Materials:
  • Panel-mounted device housing: Polycarbonate
  • Field housing: ABS PC FR
  • Front membrane: Polyester, UV-resistant
• Terminals: Max. 2.5 mm² (14 AWG) cable cross-section
• Weight:
  • Panel-mounted device: Max. 0.7 kg (1.54 lbs)
  • Field device: Max. 2.3 kg (5.07 lbs)

Dimensions

• Field device:
  • Dimensions provided in mm (inch) on page 13.
• Panel-mounted device:
  • Dimensions provided in mm (inch) on page 11 and 13.

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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