Honeywell Enraf CIU888
SubCategory: TemperatureInstruments
Manufacturer: Honeywell
Industry:
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Key product features
- Central tank-gauging gateway → Consolidates field data for host systems
- Up to 80 tanks per CIU → Supports large terminal installations
- Embedded API/ASTM inventory calculations → Reduces separate calculation interfaces
- Enraf BPM and TRL/2 support → Integrates with established Enraf field infrastructure
- Serial Modbus support → Connects legacy or third-party serial systems
- Modbus TCP/IP host connectivity → Supports modern Ethernet architectures
- Dedicated Ethernet interfaces → Helps separate process and office-network traffic
- Web-based configuration and diagnostics → Speeds commissioning and troubleshooting
- Redundant system option → Improves availability of critical tank data
- Legal-metrology configuration options → Supports regulated inventory and custody-transfer workflows
Honeywell Enraf CIU888 is used in tank farms where measurement data from multiple gauges must be made consistently available to inventory, terminal and control systems. It acts as the interface between field instruments and host applications, helping operators maintain a single reliable flow of tank and product data. This is important for inventory management, transfer supervision, reporting and custody-transfer workflows.
The CIU888 continuously scans connected tank instruments and can perform embedded inventory calculations using recognised API/ASTM methods. It supports traditional serial interfaces for installed systems while also providing Ethernet-based connectivity for modern host architectures. Web-based configuration and diagnostics, alarm handling and optional redundant operation support commissioning and ongoing system maintenance.
Current Honeywell specifications support up to 80 tanks per CIU888 configuration, with Enraf BPM, TRL/2 and serial Modbus field connectivity depending on installed option boards. Host connectivity includes Modbus TCP/IP and serial Modbus, and Ethernet interfaces can separate process and office-network traffic. The platform also supports legal-metrology configurations and NMI-approved applications where required.
By centralising field communication and tank calculations, CIU888 reduces the number of point-to-point integrations that maintenance teams must manage. Redundant configurations can improve data availability, while remote diagnostics can shorten troubleshooting time when correctly secured and engineered. AxFlow can help specify communication boards, tank capacity, redundancy and migration requirements for new or existing Enraf tank-gauging systems.
