The Eurotherm 2704 process controller is a highly accurate and stable process controller available in a single, dual or triple loop format. Features include setpoint programming and a comprehensive selection of math and logic functions. The 2704's user interface incorporates a bright dot matrix display, providing extreme flexibility and ease of use. It is a highly configurable product offering many features previously found only in programmable logic controllers. This enables systems to be implemented integrating the process control and logic functions of a machine, therefore simplifying system complexity and reducing the total system costs. Configuration is achievable either via the front panel or using Eurotherm’s iTools configuration software.
The 2704 offers typical resolution of 0.25uV, making it ideal for applications such as semiconductor, vacuum heat treatment, and research applications. All thermocouple input types are catered for, as are Pt100 resistance thermometers and linear input types such as 0-10Vdc and 4-20mA. Four-wire Pt100, and Pt25 measurement is also possible using a module specially designed for high accuracy metrology applications.
The 2704 can store 60 setpoint programs, each with 16 digital events. A total of up to 600 segments can be programmed, and holdback, wait functions, and digital inputs offer an extremely flexible solution for applications such as carburizing and vacuum furnaces, environmental chambers and autoclaves.
The 2704 supports two slave communication ports. Its modular build provides the user with a selection of communication protocols enabling easy integration into both PLC and PC supervisory systems. Master Modbus communications significantly increase the applications open to the 2704. In its simplest form, it can be used to retransmit a setpoint to a number of slave controllers in a multi-zone furnace. Alternatively it can be integrated with the Mini8 16 loop controller to provide a remote operator interface with setpoint programmer functions.
