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AVT Services Newsletter
Dear Readers,
Welcome to the next edition of AVT's newsletter. In this issue we discuss AVT's upgrade of a Varian coating system at the Australian National University, our process control capabilities and the advantages of the Edwards dry claw vacuum pumps over regular claw pumps. Also in this issue: How thin film monitors work and our new Roth & Rau distributorship. We hope you enjoy!
Warm regards,
The AVT Team
Varian Coater upgrade at the ANU
AVT has recently upgraded a manually controlled Varian coating system at the Australian National University to a fully automated PC controlled system. The system includes a completely customisable recipe system using Microsoft Excel, allowing users to modify excel files to create and alter their own coating recipes.
First, AVT technicians collaborated with staff at the ANU to determine the requirements and specifications which the upgraded coating system would need to meet. Complete designs for the system were created and continually modified to meet the ANU’s approval. We then went to work on the machine.
Click here to read more and view photos of the upgrade and cad design.
Process Control Upgrades
AVT Services have developed a platform by which to update control systems and hardware on involved vacuum processes and systems. Our customisable Process Control Automation system can fully integrate your process control and monitoring requirement.
- Simplicity of Control.
- User friendly Interface.
- Reduction of control hardware.
- Remote control.
- Remote Support via modem.
- Designed to your specific requirements.
- Menu Driven controls which allow saving of variations of process.
- Total process flexibility.
- Data Storage with the format of your choice.
- Secure and hierarchical user access.
- Basic to advanced signal analysis.
- Allows for real-time process manipulation during process execution.
- Internationally recognised program.
Click Here for a more involved outline and a diagrammatic overview of our process control upgrade process.
Dry Claw Vacuum Pump Resolves Powder Transport System Problems
Our customer is a manufacturer of engineered composite components. They have a pneumatic conveying system that utilises vacuum to transport fine powder composite material in their manufacturing process.
A constant problem in the process was the high maintenance regime on the oil sealed rotary vane vacuum pump on the system. As the powder material being transported by vacuum is fine, small amounts of the material will inevitably bypass the inlet filtration and enter the vacuum pump. The material then combines with the oil and severely compromises the lubrication properties of the oil in the vacuum pump, causing premature wear of the internal surfaces.
The solution was to replace the oil sealed pump with a pump having a dry swept volume and a non-contact mechanism. Due to the robustness of the design and the often quite high negative pressure requirement of the customer’s system, an Edwards “Drystar” GV series multi-stage claw pump was chosen. The GV series of dry pumps have been proven in arduous applications, such as vacuum metallurgy, where high dust and particulate loads are carried over from the process into the pump. The customer is delighted with the reliable operation of the GV dry pump, and the additional production up time that has resulted.
Contact AVT Services for more information
