The red-y smart series by Vögtlin delivers high-precision, industrial-grade thermal mass flow meters and controllers designed for seamless measurement and regulation in gas delivery systems and plant engineering applications. Utilizing advanced MEMS CMOS semiconductor sensor technology embedded directly within the gas stream, these instruments offer exceptional accuracy, robust reliability, and complete immunity to pressure and temperature variations. The series features standard digital (Modbus RTU) and analog interfaces combined into a single, compact unit, ensuring ultimate versatility for automated factory networks. Available in and versions, the mass flow controllers integrate a tightly sealed, fast-acting control valve with response times of approximately 300 ms, significantly minimizing loop settling times and optimizing precise gas routing in harsh industrial environments.
Key Product Features
- High-Accuracy Dual-Version Calibration: Offers standard accuracy of ±1.0% of full scale or a option reaching up to ±0.3% of full scale plus ±0.5% of reading.
- Ultra-Wide Turndown & Dynamics: Provides a standard dynamic turndown ratio of 1 : 100, allowing precise mass flow monitoring from highly granular baselines up to full scale limits.
- High-Speed, Leak-Tight Regulation: Integrated control valves feature a fast response time of approx. 300 ms and an exceptional helium leak rate of less than 1×10¹&sup0; mbar l/s He for tight shutoff.
- 2-in-1 Combined Interfaces: Equipped with a digital Modbus RTU RS-485 network bus interface and standard analog outputs (4-20mA / 0-10V) working simultaneously.
- Local Indication & Advanced Multi-Gas: Available with an optional built-in display or an onboard multi-color LED status indicator, supporting pre-calibrated multi-gas programming to switch fluid curves on the fly.




