VÖGTLIN / Voegtlin Instruments precision gas flow meters and controllers

VÖGTLIN / Voegtlin Instruments gas flow instrumentation: red-y smart, compact, and industrial mass flow meters, pressure controllers, and Q-Flow rotameters.

VÖGTLIN / Voegtlin Instruments red-y smart meter GSM thermal mass flow meters

Digital thermal mass flow meters VÖGTLIN / Voegtlin Instruments red-y smart meter GSM provide high-accuracy measurement for technical and ultra-pure gases in process pipelines. Utilizing semicon CMOS sensor chips, they deliver rapid dynamic response and stable gas monitoring.

Volumetric flow measurement spans from 0..25 mln/min up to 0..450 ln/min in real gas
High calibration accuracy reaching plus-minus 0.3% of full scale plus 0.5% of reading
Standard Modbus RTU interface with optional Profibus DP, Profinet RT, and EtherCAT bus
Flowmeter bodies machined from anodized aluminum or electropolished 316L stainless steel

VÖGTLIN / Voegtlin Instruments red-y smart controller GSC mass flow controllers

Precision mass flow controllers VÖGTLIN / Voegtlin Instruments red-y smart controller GSC integrate digital CMOS metering with a fast proportional electromagnetic valve. They ensure highly reproducible gas dosing and automated setpoint tracking across industrial networks.

Stable flow setpoint control achieved within 300 milliseconds without pressure overshoot
Tight control valve shut-off with leakage rates below 1x10-6 mbar l/s helium equivalent
Wide dynamic turndown ratio of 1 to 100 with on-board multigas calibration profile tables
Process sealing options utilizing premium fluoropolymer FKM, EPDM, or FFKM compounds

VÖGTLIN / Voegtlin Instruments red-y compact GCM portable battery flow meters

Portable digital gas flow meters VÖGTLIN / Voegtlin Instruments red-y compact series GCM operate using a standard AA battery or micro-USB power. Featuring an illuminated touch display, they perform precise gas metering unaffected by ambient temperature or pressure changes.

Autonomous battery operation powered by a single replaceable AA cell for field audits
Backlit graphical touch screen displaying real-time flow rate and accumulated gas volume
Thermal measurement principle independent of process pressure drops and heat variations
Optional manual precision needle valve integrated into the body for manual flow setting

VÖGTLIN / Voegtlin Instruments red-y industrial IP67 heavy-duty gas flow meters

Heavy-duty flow instruments VÖGTLIN / Voegtlin Instruments red-y industrial series (GSR meters and GCR controllers) are engineered for rugged production plants. Featuring IP67 and NEMA 6 ingress protection, they utilize industrial M12 round connectors for fieldbus networking.

Robust metallic protective enclosure rated IP67 and NEMA 6 for harsh washdown plants
Hazardous area equipment option compliant with ATEX II 3G Ex ec IIC T4 Gc classifications
Sealed industrial M12 connectors supporting Modbus RTU, Profinet RT, and 24 V power loops
High immunity against aggressive atmospheres, chemical splashes, and mechanical impact

VÖGTLIN / Voegtlin Instruments red-y smart digital pressure controllers

Advanced instruments VÖGTLIN / Voegtlin Instruments red-y smart pressure controller combine electronic pressure regulation with thermal mass flow metering. The units operate in forward pressure control or back pressure relief modes, providing dual process safeguarding.

Dual functionality integrating precision pressure stabilization and gas mass monitoring
Configurable designs supporting downstream pressure regulation or upstream relief action
Seamless switching between pressure regulation loop and mass flow rate limiter logic
Working pressure ranges from 0.2 to 11 bar absolute with active temperature compensation

VÖGTLIN / Voegtlin Instruments Q-Flow variable area meters and M-Flow valves

Precision instruments VÖGTLIN / Voegtlin Instruments Q-Flow variable area rotameters and M-Flow metering valves reflect Swiss engineering excellence. Calibrated glass tubes and 15-turn fine control valves deliver dependable gas dosing across research and industrial lines.

Calibrated borosilicate glass metering tubes in standardized lengths of 80mm and 140mm
Built-in 15-turn high-resolution control needle valve with linear flow characteristics
Hysteresis-free spindle movement guaranteeing strict repeatability in micro-dosing
Modular Gas Block Systems allowing integration of multiple metering units on one block

Swiss manufacturing history of Vögtlin and CMOS sensor integration

Swiss developer Vögtlin Instruments was established in 1986 as a specialized engineering enterprise producing variable area flow meters and precision valves for laboratory gas systems.

At the dawn of the twenty-first century, Vögtlin completed a technological transition from conventional mechanical indicator tubes to microelectronic thermal mass flow instruments built upon semiconductor silicon sensors.

Employing CMOS sensor chips enabled direct mass flow measurement without needing mathematical temperature or pressure compensation.

In 2011, Vögtlin joined the international TASi Measurement group, securing access to global calibration facilities across Switzerland, Germany, and the United States for high-accuracy factory calibration using clean process gases.

Working principles and control dynamics of red-y smart GSM and GSC

The architecture of red-y smart instruments centers on a microelectronic sensor placed directly within a calibrated flow channel.

The silicon anemometric sensor detects heat dissipation caused by flowing gas molecules, while an integrated microprocessor determines mass flow rates with real-time compensation for thermal drift and flow profile non-uniformity.

In GSC flow controllers, the flow conduit links with a rapid-acting direct-acting proportional electromagnetic control valve. The control loop reaches the target flow setpoint within three hundred milliseconds.

The tight valve seat delivers high isolation performance with helium leakage below 1x10-6 mbar l/s, preventing fluid loss when processes stop.

Operational benefits of autonomous red-y compact units in the field

The red-y compact series serves as a modern digital upgrade over mechanical rotameters in production environments requiring mobile gas monitoring without routing electrical wiring.

Operating via a standard replaceable AA battery or a micro-USB port, the low-power electronics ensure continuous autonomous service across several months.

An illuminated graphical touch display presents real-time volumetric rates and totalized gas volume directly to plant operators.

Unlike glass tube meters, red-y compact readouts remain unaffected by atmospheric pressure shifts and ambient heat variations, while an optional manual precision needle valve facilitates accurate flow adjustment during plant commissioning.

Deployment of rugged red-y industrial IP67 flowmeters in plants

Engineered for heavy processing environments in chemical, metallurgical, and biotechnology sectors, the red-y industrial series features GSR meters and GCR controllers housed in robust metallic enclosures rated IP67 and NEMA 6.

This construction allows direct pressurized washdowns and reliable operation in dusty air without supplementary protective cabinets.

Power supplies and industrial fieldbuses including Modbus RTU, Profinet RT, and EtherCAT connect via sealed threaded M12 connectors.

Selected configurations offer compliance with ATEX Category II 3G Ex ec IIC T4 Gc specifications for safe deployment within Zone 2 hazardous process areas where flammable gases, solvent vapours, or hydrogen mixtures may occur.

Integrated pressure and flow management in smart controller devices

Electronic red-y smart pressure controllers combine digital pressure control with thermal mass flow metering inside a single compact housing. This configuration allows technicians to oversee industrial operations across two interdependent parameters simultaneously.

The instrument operates in downstream pressure stabilization mode or upstream back pressure relief mode.

Intelligent control software continuously monitors gas flow velocity to prevent excessive process media consumption during sudden reactor impedance variations.

Providing dual regulation loops within one device simplifies gas panel layout, eliminates redundant pressure transmitters, and minimizes threaded piping joints across process gas manifolds.

Precision Q-Flow glass rotameters and M-Flow micro-metering valves

For analytical laboratories and research test benches, Vögtlin manufactures Q-Flow variable area flow meters fitted with calibrated borosilicate glass tubes measuring 80 and 140 millimeters.

Internal conical surfaces are honed to high accuracy, which together with polished floats of stainless steel, sapphire, or glass ensures linear scale readings across the range.

The rotameters incorporate 15-turn high-resolution control needle valves with fine-pitch spindle threads. The mechanical drive eliminates backlash and hysteresis when reversing knob rotation.

For intricate multi-line setups, modular Gas Block Systems integrate multiple measurement channels into a single neat distribution block.

VÖGTLIN / Voegtlin Instruments and model names are trademarks of their respective owners and are used only to identify the equipment for which we source parts. SpareX is not an official dealer, distributor or representative of VÖGTLIN / Voegtlin Instruments and is not affiliated with the trademark owner. Origin, documents and warranty are stated for each item in the quotation.