Multi-Parameter Analyser – CRONOS® and CRIUS®

Multi-Parameter Analysers - CRONOS® and CRIUS®4.0

Multi-Parameter Analysers – CRONOS® and CRIUS®4.0

Multi-sensor, multi-channel, multi-parameter analysers can greatly reduce the cost per point of any measurand including pH, residual chlorine, ORP, ozone, chlorine dioxide, dissolved oxygen and turbidity measurements without sacrificing the quality of those measurements.

The CRONOS® and CRIUS®4.0 controllers both allow the connection of multiple sensors. For example, a CRIUS®4.0 may be made up of multi-sensors of the same variety such as up to four chlorine sensors, or could be made up of a mix (multi-channel analyser), such as a pH sensor, a chlorine sensor, and a turbidity sensor. Whatever your requirement for a multi-channel analyser, the CRONOS® and CRIUS®4.0 ranges will provide what you need.

The CRONOS® is a high quality, low cost transmitter designed to give water treatment engineers everything that they need from a transmitter and nothing that they don’t. With no frills, costs can be kept to a minimum whilst optional communications packages allow Profibus, Modbus ASCII, Modbus RTU, Modbus TCP, 4-20mA analogue outputs, and relays for alarms and control.

The CRONOS® has the capability to control up to two sensors of any type with appropriate analogue outputs and relays. Equipped with optional PID control, the CRONOS® is very able to control complex water treatment processes at a fraction of the cost of other controllers.

The CRONOS® can also come in a multitude of languages making it suitable for use in any market.

Customers requiring additional functionality such as downloadable data logging or remote access via the internet should consider the CRIUS®4.0 controller.

The CRIUS®4.0 offers more sensor connections, more functionality and more flexibility with a colour screen and optional built in 3G/4G modem. The CRIUS®4.0 is an attractively priced, top of the range instrument controller. Optional communications packages allow Profibus, Modbus ASCII, Modbus RTU, Modbus TCP and others.

The CRIUS®4.0 is equipped with the capability to connect up to four sensors of any type with appropriate analogue outputs and relays. Four sensors not enough? Simply connect up to 4 CRIUS®4.0 together all using the same display and communications. Equipped with data logging as standard and multiple PID loops as options, the CRIUS®4.0 is very able to control complex water treatment processes at a fraction of the cost of other controllers.

The CRIUS®4.0 can also come in a multitude of languages making it suitable for use in any market.

Customers requiring a no-frills controller should consider the CRONOS® controller.

Water 4.0 and Industry 4.0 Controllers

The phrases ‘Water 4.0’, ‘Industry 4.0’, ‘Internet of Things’ and ‘SMART and DIGITAL’ are now commonly heard but what do they mean and where does Pi fit in? Industry 4.0 relates to the concept that we are living through a 4th Industrial Revolution where factories will be as SMART as they can be. The main principles are based on:

  • Interoperability
  • Information Transparency
  • Technical Assistance
  • Decentralisation


Water 4.0 is how this technology and philosophy will be implemented/will affect the water industry. The Internet of Things refers to all devices we use all the time talking to each other and making their own decisions.

It is generally accepted that SMART refers to the increasing sophistication of equipment to make decentralised decisions, so it is this technology that allows for the implementation of Industry 4.0 or Water 4.0, and DIGITAL refers to its comms capability. For example, in 1990 a chlorine analyser measured chlorine in water, gave out a 4-20mA output proportional to the chlorine and a couple of relays.

In 2018 the CRIUS® HaloSense (fully Water 4.0 developed) can provide the 4-20mA output and relays, but also has multiple digital comms options (interoperability), has space for up to 16 sensors (information transparency), has wireless and wired internet access (technical assistance) and full PID capability with remote setpoint, i.e. another device can set the setpoint (decentralisation).

CRONOS®

The CRONOS® is a very capable analyser and controller and includes:

  • Up to 2 sensor inputs – the CRONOS® works with all of Pi’s sensors and many more.
  • 8 relay outputs – for alarms and process control.
  • Process control – via extremely capable PID loops.

CRIUS®4.0

The CRIUS®4.0 controller provides users with numerous benefits:

  • Multi-Sensor – reduces costs.
  • Onbpard PID and other controls – reduces cost and improves process control.
  • Onboard data logging.
  • Remote Access via MQTT – live results anywhere in the world.
  • Industry leading autocleaning options for sensors – reduced maintenance and cost of ownership.
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