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The Liquiline CM444 and CM448 multichannel transmitters from Endress and Hauser are suitable for the monitoring and control of processes in non-hazardous applications in industries including water and wastewater, chemical and power.

The transmitters accept inputs from up to eight Memosens digital sensors, including nitrate, spectral absorption coefficient, pH, ORP, conductivity, dissolved oxygen, turbidity, free-chlorine and ion-elective electrode sensors.

The data is transmitted to a control system via 4–20mA analogue outputs or via HART, Profibus or Modbus networks.

Remote access is offered through an integrated web server.

Key information

  • The Liquiline devices automatically recognise any combination of Memosens sensors and begin operating straight away.
  • The devices can be field upgraded at any time to accept additional inputs by plugging in extra modules.
  • Additional outputs can include up to four relay outputs capable of switching 24VAC, 115VAC or 230VAC; these can be used to sound alarms, start or stop cleaning functions or activate a controller.
  • A web server connects to the internet via the CM444 or CM448’s Ethernet TCP port; users can perform remote configuration or access to device parameters.
  • The devices have a backlit graphic display and drop-down menus and display outputs from the built-in data logger.
  • The data logger can maintain up to eight separate data logbooks with 150,000 entries each.
  • The transmitter housings are NEMA4X/IP66/67 rated, leak proof and corrosion resistant.


Endress+Hauser is a global leader in measurement instrumentation, services and solutions for industrial process engineering. With over 8,000 employees worldwide, the Group generates annual net sales of more than Euro1.1 billion.

The Endress+Hauser Group

Endress+Hauser is a global leader in measurement instrumentation, services and solutions for industrial process engineering. The Group employs 13,000 personnel across the globe, generating net sales of more than 2.1 billion euros in 2015.
With dedicated sales centres and a strong network of partners, Endress+Hauser guarantees competent worldwide support. Production centers in 11 countries meet customers’ needs and requirements quickly and effectively. The Group is managed and coordinated by a holding company in Reinach, Switzerland, with UK headquarters in Manchester. As a successful family-owned business, Endress+Hauser is set for continued independence and self-reliance.
Endress+Hauser provides sensors, instruments, systems and services for level, flow, pressure and temperature measurement as well as analytics and data acquisition. The company supports customers with automation engineering, logistics and IT services and solutions. Our products set standards in quality and technology.
We work closely with the chemical, petrochemical, food & beverage, oil & gas, water & wastewater, power & energy, life science, primaries & metal, renewable energies, pulp & paper and shipbuilding industries. Endress+Hauser supports its customers in optimising their processes in terms of reliability, safety, economic efficiency and environmental impact.
Founded in 1953 by Georg H Endress and Ludwig Hauser, Endress+Hauser has been solely owned by the Endress family since 1975. The Group has developed from a specialist in level measurement to a provider of complete solutions for industrial measuring technology and automation, with constant expansion into new territories and markets.

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