Remote Access for CRIUS®4.0 – Control InSite

The CRIUS®4.0 is the first water analyzer controller to use MQTT as the communications protocol for remote access. This Internet of Things communications protocol (Message Queuing Telemetry Transport) allows very small packets of data to be transferred very frequently. When coupled with the power of the CRIUS®4.0 this allows for the display of LIVE DATA either in Control InSite or in its sister product Data InSite (please click here for more information).

Using MQTT means that communication with the CRIUS®4.0 is quick, inexpensive, reliable and secure. The two way remote access is achieved by using a customers LAN (local area network) or by using an optional in-built 3G or 4G modem that can use any data enabled sim card.

Setup is easy and largely pre-configured meaning that as soon as the power is on the CRIUS®4.0 can be configured remotely.

Remote Access - Using the ultimate IoT communications protocol

Control InSite gives the user three unrivaled benefits:

  • Live Data – The frequency of communication that MQTT allows means that the data you are looking at is effectively live. The size of the packets mean that there is no increased data overhead so the costs are effectively the same or lower than other communications protocols that can’t provide live data.
  • Security – MQTT has security built in with data encryption as standard.
  • Flexibility – The way the communications works is that the CRIUS®4.0 is in communication to a cloud based “broker”. It is then possible for other cloud based services to “subscribe” to the data of that CRIUS®4.0. This means that at the same time the CRIUS®4.0 is talking to Control InSite, it can be talking to a data storage and reporting portal like Data InSite from Pi or another proprietary portal.

To get a personalized demo of what Control InSite can do for you get in touch with one of our technical experts today.

Focus On

Focus Ons are a series of short articles, providing technical information regarding instrumentation, process measurement in potable, waste, process and pool waters. If you would like to join the mailing list, please contact us.


MQTT is a communications protocol intially used to transfer data to and from satellites. It has been adopted by the Internet of Things as the standard communications protocol as it allows for the transfer of data with very small packet sizes thereby keeping costs down on mobile data transfer.

Remote access is a term that means the ability to “talk” to an analyzer or device when you are remote from it (not in front of it).


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