D-Flux Multi Series

Vögtlin D-Flux Multi Series: mass flow meters & controllers

The Vögtlin D-Flux Multi Series is an advanced series of differential pressure mass flow meters and mass flow controllers that can measure several process variables simultaneously. Thanks to multi-parameter technology, this series offers widely applicable and accurate gas flow solutions for industrial, analytical and OEM applications.

The D-Flux Multi Series is particularly suitable for applications where several parameters must be monitored or controlled simultaneously and where flexibility and precision are essential for process stability

Key properties

The D-Flux Multi Series is designed for applications that require high flexibility, multi-parameter measurement and fast response. Thanks to the combination of differential pressure technology, smart electronics and modular configuration, this series is widely applicable in industrial and analytical environments.

Large flow ranges

The D-Flux Multi Series supports flow ranges up to 1400 ln/min for air. For other gases, higher flow ranges are possible via conversion factors, for example up to 2900 ln/min for hydrogen. This makes the series suitable for both low and high gas flows.

Custom application profiles

The instruments offer space for up to 15 application profiles, in which settings such as gas, flow range, PID parameters and other process data can be stored per application. Each profile has its own totaliser, allowing fast switching between processes.

Wide choice of materials

The D-Flux Multi is available with an aluminium housing (light and economical) or stainless steel, with all wetted parts in stainless steel. Elastomers are available in FKM, EPDM or FFKM. For hydrogen applications, a gold-coated pressure sensor can be supplied.

Multiple sensor options

The series is available with five different sensor versions. The core sensor is a cost-effective solution for air, nitrogen, oxygen and argon. The prime sensor offers higher accuracy and is suitable for all gases. For hydrogen, a special gold-plated prime sensor is recommended.

Widely applicable and robust

The D-Flux Multi Series is suitable for pressures up to 14 bar(a) and operating temperatures from -20 to +60 °C. The instruments are available in aluminium or stainless steel and have IP54-bescherming, making them suitable for industrial environments.

Minimal inlet length required

Dankzij het compacte ontwerp is geen lange rechte aan- of afvoerleiding nodig. This simplifies installation and makes the D-Flux Multi suitable for applications with limited installation space.

High accuracy and fast response

Measurement accuracy is up to ±0,3 % of full scale plus ±0,5 % of the measured value. The sample rate is 1 ms, with a data update every 10 ms and a total response time of 120 ms (controllers approx. 2 s), enabling fast process responses.

Diagnostics and alarm functions

The D-Flux Multi Series has extensive diagnostic, alarm and monitoring functions. This information is accessible via Modbus or the Vögtlin software environment.

Automatic zeroing (autotare)

To minimise measurement uncertainty, the controller automatically detects no-flow situations and then performs an autotare correction. No manual optimisation is needed.

Vögtlin Flow Studio software

With the Vögtlin Flow Studio software, the D-Flux Multi can easily be configured and read out in a Windows environment via Modbus. The software supports graphs, data logging and extensive parameter settings, among other things

Applications

The D-Flux Multi Series is widely applicable, including for:

• Process monitoring and control in chemical and petrochemical installations
• Gas distribution and metering stations
• OEM systems that require several parameters to be monitored simultaneously
• Industrial automation requiring integrated signals
• Laboratory and pilot plant environments

Thanks to the multi-parameter approach, these instruments are particularly suitable for situations where a complete picture of gas behaviour is needed to control processes optimally.

Flow ranges