Dairy Industry

Tamaki Control's recent dairy projects include the automation of 11 wet floor/processing plants, 19 UF/MF/RO plants, 27 evaporators, and 13 driers both in New Zealand and overseas, using a number of PLC/DCS and HMI platforms. We have a pricing model that allows us to quickly cost the automation component of dairy projects.

The approach that we follow is to develop preliminary animated HMI screens at a very early phase of projects, (in effect "moving" P&IDs), and to use these as the basis for discussing the requirements of the customer. The screen shown here is a simplified example. The customer can quickly confirm that we have correctly understood the functioning of his plant, and once engineering begins these screens become the basis for the final system graphics. The HMI that we often use in dairy applications features .htm graphics that are readily transportable, and make this process very easy.

Lime Kiln

Sample schematics from a recent automation upgrade at a lime works. Telemechanique and Siemens PLCs control the lime production process which involves crushing, hydration, separation and storage.

Hydro Station

Screens that were developed as part of a project that linked 16 hydro generating units on 5 rivers back to a central command centre. Honeywell Experion is the HMI, controlling the units through 27 Rockwell and Siemens PLCs.

Oil and Gas

Tamaki Control has experience with Distributed Control Systems and Safety Shutdown Systems, and is familiar with the oil and gas industry requirements for redundancy, reliability, safety and continuous process control.

This has resulted in Tamaki Control's involvement in the design and implementation of control systems for several large petrochemical project within NZ and internationally.