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Smart mass flow meters and controllers for gases

The thermal mass flow meters and controllers of the series red-y by Vögtlin Instruments determine and control very exactly the mass flows of air and gases. Its easy handling and compact design offer considerable benefits.

Passing a flow divider a defined part of the flowing gas is conducted to the mass flow sensor. The medium is heated there as previously defined and the temperature difference between input and output of the mass flow sensor is measured. By knowing the bypass divider relation the total mass flow can be determined.

Main Features

  • Touch LCD bar graph display
  • Measurement, control and alarm function
  • Measurement range 1:50
  • Pressure and temperature compensated
  • Totalisor-function
  • Flow monitoring
  • Precise manuel control valve
  • Clean, dry, non-condensing gases

Data Sheet

GCx – compact mass flow meter

The flow meter and controller of the compact series GC replace variable area flow meters in their previous fields as local flow indicator and target also mobile application possibilities.

In addition to the benefits of network independency – thanks to battery-powered operation – and the flow adjustment via manual control valve the devices offer a clear added value to your system by an accurate and clearly readable display, pressure independency and intelligent watchdog/limit value functions. GCx mass meters are suitable for operating pressures up to 10 bar.

Properties Functions
Measurement range 50 Nml/min up to 450 Nl/min
Accuracy Standard: ±2 % FS
±3 % FS >200 Nl/min
High: ±1 % FS <50 Nl/min
Pressure input 0 up to 10 bar overpressure
bursting 15 bar
Operating temperature 0 up to 50 °C
Gas type Luft, N2, O2, He, Ar, H2, CO, CO2, H2
... other gases on request
Media compatibility clean, dry,
non-condensing gases
Process connection 2x G1/4f oder G1/2f
Electr. connections (output) 1x potential-free changers
Power supply Battery Standard AA
Extern 24 VDC

GSx – smart mass flow meter and controller

The thermal mass flow meters of the Smart series GS are particularly suitable for quick measurement and control tasks in the field of apparatus engineering and plant engineering, as well as for specific OEM applications thanks to proven technology and standardized interfaces.

Communication with a PC or a PLC can be operated digitally as well as analogously. In addition, the GSx series is characterized by a number of other features, by which the devices can be optimized very easily to a variety of different requirement profiles. The GSx series is suitable for operating pressures up to 10 bar.

Properties Functions
Measurement range 25 Nml/min up to 500 Nl/min
Accuracy Standard: ±1 % FS
High: ±0.3 % FS, ±0.5 % of measurement
pressure input 0 up to 10 bar overpressure
bursting 15 bar
operating temperature 0 up to 50 °C
Gas type Luft, N2, O2, He, Ar, H2, CO, CO2, H2
… other gases on request
Media compatibility clean, dry,
non-condensing gases
Process-connection 2x G1/4f / G1/2f / G3/4f
Electric-connection (output) 1x serial data (RS485) and
1x current (4-20 mA) or voltage (0-10 V)
Power supply Extern 24 VDC

Main Features

  • Microprocessor controlled
  • Serial interface (RS485) Modbus
  • Networking with up to 247 devices
  • Measurement range 1:50, 1:100 high perf.
  • Fast reaction time 50 ms
  • Gas-Temperature measurement
  • Totalisor-function
  • LED operating mode and gas flow
  • Precise digital / electronic control valve
  • Multigas-function up to 10 different gases
  • Clean, dry, non-condensing gases

Data Sheet

Main Features

  • Pressure and flow in a single device
  • Measurement, control and alarm function
  • Serial interface (RS485) Modbus
  • Networking with up to 247 devices
  • Measurement range 1:50, 1:100 high perf.
  • Fast reaction time 50 ms
  • Upstream or back pressure control
  • With external pressure transmitter
  • Multigas-function up to 10 different gases
  • Clean, dry, non-condensing gases

Data Sheet

GSP – Electronic pressure control with integrated flow measurement

The new electronic red-y smart pressure controllers combine the reliable technology our of thermal mass flow controllers of the Smart series GSC with an electronic pressure control.

The devices automatically control a predefined process pressure and at the same time measure and/or limit the flow rate. On-the-fly switching between pressure control and flow control offers maximum flexibility.

Properties Functions
Measurement range flow 25 Nml/min up to 500 Nl/min
Accuracy flow Standard: ±1 % FS
High: ±0.3 % FS, ±0.5 % of measurement
Measurement range pressure 0 up to 10 bar overpressure / absolute
bursting 15 bar
Accuracy pressure Standard: ±0.5 % FS
Operating temperature 0 up to 50°C
Gas type Luft, N2, O2, He, Ar, H2, CO, CO2, H2
... other gases on request
Media compatibility clean, dry,
non-condensing gases
Process connection 2x G1/4f oder G1/2f
Electr. connections (output) Sub D plug 9 pole
Power supply External 24 VDC