Communication Interfaces

Communication Interfaces

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Tank farm operators rely heavily on their tank gauging and inventory monitoring systems. Honeywell’s new communication interface, CIU 888, ensures the availability of accurate and reliable tank measurement and calculated inventory data to drive safety and efficiency in every tank farm application.

The new CIU 888 is a safe and reliable gateway between tank gauges and operational systems that manage inventories at bulk storage tank farms. It ensures reliable tank and product data is easily available to multiple users and that the right data is delivered to each user according to their task. Convenient tools promote the highest efficiency during commissioning and remote servicing of tank farm gauges. Compliance with relevant standards and legislation, meanwhile, is confirmed by authorities such as the Dutch NMI.

With the CIU 888, all measured and calculated data is continuously available for efficient operations, safe control of product movements and support for custody transfer and Weights and Measures (W&M) report printing.

CIU 888 integrates the field-proven concepts of Honeywell's CIU 880 solution into a single unit and takes data availability to the next level. All relevant tank parameters are continuously scanned and embedded tank calculations provide tank inventory data according to API/ASTM standards. Traditional serial interfaces support existing applications without any change, while dedicated Ethernet connections provide open access. Furthermore, intelligent security measures prevent unauthorized access and loss of data.

The improved redundancy concept in the CIU 888, with continuously synchronized units, prevents process disruption, while guarding and maintaining the status and validity of data for W&M purposes. A smart user-concept includes a “Ring of Light” with an integrated LCD for a quick status overview. More detailed Web-based information is accessible remotely, supporting fast analysis and reducing service time.


CIU 888 enables Honeywell Enraf tank inventory monitoring systems to deliver a more profitable, safer operation by:

  • Maximizing uptime and improving site safety and efficiency 

  • Lowering the cost of ownership 

  • Enhancing operator effectiveness through alarm management, clear displays and convenient tools

  • Meeting demands for expansions and future system requirements with a scalable solution

  • Ensuring compliance with API/ASTM standards and Weights & Measures legislation. 

29 Documents FoundItems per page :
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Enraf Tank Farm Gateway CIU 888Enraf Tank Farm Gateway CIU 8881.56 MBBrochure1 Dec 2016
Instruction manual MODBUS protocol 880 CIU PlusProtocol manual intended for engineers involded in communication implementations of Honeywell Enraf 880 CIU Plus Communication Interface Unit312.6 KBProduct Manual30 Sep 2013
CSA Certificate of Compliance SmartLink Power Supplies PSA, PSDSmartLink Power Supply; increase the dielectric strength test124.81 KBApproval Certificate30 Apr 2013
Configuration manual SmartLinkThis Configuration manual describes the configuration of the SmartLink system by means of Engauge service tool.526 KBProduct Manual1 Oct 2012
Installation guide SmartLink HCM-GPUThis installation guide provides all the necessary information for installation and maintenance of the SmartLink HCM-GPU Host Communication module279.65 KBProduct Manual16 Sep 2012
Public Support Documentation
8 Documents FoundItems per page :
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Support Manual CIU 888Support Manual CIU 8884.63 MBSupport Document1 Apr 2015
Certificate for CIU 888Certificate for CIU 888643.77 KBSupport Document1 Apr 2015
Certificates for CIU 888Certificates for CIU 888481.97 KBSupport Document1 Apr 2015
4416524_Rev7Installation guide 880 CIU Prime / CIU Plus 497.42 KBSupport Manual2 Feb 2010
4416516_REV4Installation guide Key switches in 880 CIU Prime (Plus) 447.75 KBSupport Manual27 Aug 2009

​Training, maintenance and support are critical aspects to consider when choosing a technology partner. Honeywell offers world-class training through our Automation College, as well as comprehensive maintenance and support services designed to leverage your physical and intellectual assets and help you sustain and increase their value and performance over time.

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