Mass Flow Controllers from Vogtlin offer the customer the best in class repeat ability and accuracy of controlling inert gases used in glass production. Low-E glass incorporates multiple layers of metal or other compounds as a surface coating that provides high transmittance for visible lights and high reflectance for mid-IR and far-IR lights. The coating benefits are excellent heat insulation and favorable light transmission compared to standard and traditional-coated glass used in the building industry.

Challenge
Inflow gas should be maintained at a very stable level in the coating process to avoid uneven coating and significant spots and negatively impacting the general energy of particles in the coating, which is not favorable for reactive deposition. A complicated gas distribution system requires numerous of process gas branches. Installation and commissioning of single channel gas circuits are tedious with heavy work load. In addition, this system typically reduces efficiency, and generates multiple leakage points. Human operation errors (wrong connection of gas mixing and connection circuits) also can negatively impact operations.

Solution
MEMS technique of the MFCs provides for a 350ms rapid response. Plug-and-play functionality and no warm-up periods improve user productivity.

Vögtlin Mass Flow Controllers have a unique way of compensating for changes in ambient and gas temperature, which strongly improves the repeatability. The MEMS technology insures a long-term stability without any drift as long as the gas supply is clean and dry.

Only one bolt is required to fix an MFC, allowing faster and more accurate removal/assembly.

An Integrated valve bank design and accurate internal mixing and distribution pipe design help avoid operational risks and improve end user comfort. Other benefits include saving of consumables for gas source pipes, reduced leakages points and field installation time as well as an easy and accurate realization of complicated gas mixing and distribution process.

Units can be calibrated for multiple gases and parameters, which leads to significant reductions in spare part inventories and cost savings.

Key Features
High repeatability & reliability
Short response time
Safe and fast control
Compact unit with high-quality components
Interfaces
Analog
Modbus RTU
Profibus DP-V0/DP-V1
Profinet*
EtherCAT*