

This is our best pressure/vacuum controller: the Elveflow OB1 MK4. Embedding the state-of-the-art technology for flow control from -900 mbar to 8 bar, this controller is 20 times more precise and 10 times faster than the other flow controllers on the market.
According to your needs, it can be equipped with up to 4 channels for pressure and/or vaccum, and comes with the tubing, fittings and reservoirs necessary to perform your experiment straight after unpacking. An optional flow sensor can be added.
General
Features & Benefits
Achieve Enhanced Precision
- 20x More Precise: Achieve unparalleled accuracy in your experiments, surpassing traditional flow controllers.
- 10x Faster Response: Witness rapid flow changes with minimal delay, thanks to advanced Piezo technology.
- Pulsation-Free Flow: Ensure consistent and reliable fluid delivery, eliminating unwanted fluctuations.
Perfect for Microfluidic Innovation
- Specifically engineered for microfluidic research, the OB1 MK4 excels in demanding applications.
- Experience blazing-fast flow changes directly within your microdevices.
Versatile and Adaptable
- Configurable Channels: Pair each channel with Microfluidic Thermal Flow Sensors (MFS) or Coriolis Flow Sensors (BFS) for precise flow rate control of both liquids and gases.
- Wide Pressure Range: Offers multiple pressure ranges to suit diverse experimental needs (see specifications below).
Intuitive Software and Seamless Integration
- Elveflow OB1 Software: Control your experiments with ease using the intuitive software interface.
- Sequencer Functionality: Design complex experimental sequences with the powerful Sequencer tool.
- Data Logging: Record data at up to 100Hz and export for further analysis.
- Broad Compatibility: UART communication enables integration with various control systems, including Mac, Linux, Arduino, and PLCs.
- ESI Software and SDK: Access software and development tools for custom applications.
Reliability and Support
- Backed by a 2-year warranty for peace of mind.
Advantages of Pressure control in microfluidics

Content
1x Pressure controller
1x Power supply
1x User manual
1x USB-key loaded with ESI software
Specifications
Pressure Channels Specifications
Channel type | 1 | 2 | 3 | 4 | 5 | ||
Pressure range (mbar) | 0 to 200 mbar | 0 to 2 bar | 0 to 8 bar | -900 mbar to 1 bar | -900 mbar to 6 bar | ||
Pressure range (psi) | 0 - 2.9 psi | 0 to 29 psi | 0 to 116 psi | -13 to 14.5 psi | -13 to 87 psi | ||
Pressure stability (Full Scale)
|
0.015 %
|
0.005 %
|
0.006 %
|
-900 to 500 mbar | 500 to 1000 mbar | -900 to 2000 mbar | 2000 to 6000 mbar |
0.005 % | 0.007 % | 0.005 % | 0.007 % | ||||
Pressure stability | 30 µbar / 0.0004 psi | 100 µbar / 0.0014 psi | 500 µbar / 0.007 psi | 100 µbar / 0.0014 psi | 150 µbar / 0.0021 psi | 350 µbar / 0.05 psi | 525 µbar / 0.076 psi |
Response time | down to 10 ms | ||||||
Settling time | down to 50 ms | ||||||
Minimum pressure increment | 12 µbar - 0.00017 psi | 120 µbar - 0.0017 psi | 480 µbar - 0.007 psi | 120 µbar - 0.0017 psi | 420 µbar - 0.006 psi | ||
Pressure supply | Max pressure + 0.5 bar and up to 10 bar Non corrosive, non explosive, dry and oil-free gases, e.g. air, argon, N2, CO2, ... |
||||||
Input vacuum | / | From -0.7 to -1 bar Compatible with vacuum pump or vacuum line |
|||||
Liquid compatibility | Non contact pump Any aqueous, oil, or biological sample solution. |
Please note that the max pressure value might vary by +/- 2.5%.
Instrument Specifications
Flow sensor compatibility | Compatible with the whole MFS and BFS range Monitoring and feedback loop flow control available |
||||
Flow rates | From 0,1 µL/min to 500 mL/min (indicative, please refer to the MFS and BFS series) |
||||
Liquid Compatibility | Non contact pump Any aqueous, oil, or biological sample solution. |
||||
Software control | Elveflow Smart Interface Windows 7, 8 and 10, both 32 and 64 bit versions supported |
||||
Software Development Kit |
Librairies available: Matlab, Python, Labview, C++ Windows 7, 8 and 10, both 32 and 64 bit versions supported Serial/UART communication protocol on request |
||||
Data management | Possibility to log and extract data (.csv): channel and sensor detailed information using ESI | ||||
Input profiles | Possibility to load profiles: ramp, sine, triangle, square or custom | ||||
Automation | Generate step-by-step sequences using the ESI built-in sequencer Load and save custom configurations (.csv) |
||||
Screen | LCD screen showing pressure and sensor from the channel | ||||
USB connection | USB B | ||||
Sensor connection | One M8-4 pins connecter available per channel Compatible with Elveflow sensors: MFS, MPS, MFP, MBD Custom analog sensor supply: 5-24 V Custom analog sensor readout : 0-10 V |
||||
TTL trigger | In and out available 0-5 V |
||||
Power consumption | 12 W (100 V to 240 V – 50 Hz to 60 Hz) | ||||
Casing dimensions (5) | 240 x 223 x 80 mm | ||||
Weight | 1.4 kg to 2.9 kg |
Documentation
products.product_description_title
+
This is our best pressure/vacuum controller: the Elveflow OB1 MK4. Embedding the state-of-the-art technology for flow control from -900 mbar to 8 bar, this controller is 20 times more precise and 10 times faster than the other flow controllers on the market.
According to your needs, it can be equipped with up to 4 channels for pressure and/or vaccum, and comes with the tubing, fittings and reservoirs necessary to perform your experiment straight after unpacking. An optional flow sensor can be added.
General
Features & Benefits
Achieve Enhanced Precision
- 20x More Precise: Achieve unparalleled accuracy in your experiments, surpassing traditional flow controllers.
- 10x Faster Response: Witness rapid flow changes with minimal delay, thanks to advanced Piezo technology.
- Pulsation-Free Flow: Ensure consistent and reliable fluid delivery, eliminating unwanted fluctuations.
Perfect for Microfluidic Innovation
- Specifically engineered for microfluidic research, the OB1 MK4 excels in demanding applications.
- Experience blazing-fast flow changes directly within your microdevices.
Versatile and Adaptable
- Configurable Channels: Pair each channel with Microfluidic Thermal Flow Sensors (MFS) or Coriolis Flow Sensors (BFS) for precise flow rate control of both liquids and gases.
- Wide Pressure Range: Offers multiple pressure ranges to suit diverse experimental needs (see specifications below).
Intuitive Software and Seamless Integration
- Elveflow OB1 Software: Control your experiments with ease using the intuitive software interface.
- Sequencer Functionality: Design complex experimental sequences with the powerful Sequencer tool.
- Data Logging: Record data at up to 100Hz and export for further analysis.
- Broad Compatibility: UART communication enables integration with various control systems, including Mac, Linux, Arduino, and PLCs.
- ESI Software and SDK: Access software and development tools for custom applications.
Reliability and Support
- Backed by a 2-year warranty for peace of mind.
Advantages of Pressure control in microfluidics

Content
1x Pressure controller
1x Power supply
1x User manual
1x USB-key loaded with ESI software
Specifications
Pressure Channels Specifications
Channel type | 1 | 2 | 3 | 4 | 5 | ||
Pressure range (mbar) | 0 to 200 mbar | 0 to 2 bar | 0 to 8 bar | -900 mbar to 1 bar | -900 mbar to 6 bar | ||
Pressure range (psi) | 0 - 2.9 psi | 0 to 29 psi | 0 to 116 psi | -13 to 14.5 psi | -13 to 87 psi | ||
Pressure stability (Full Scale)
|
0.015 %
|
0.005 %
|
0.006 %
|
-900 to 500 mbar | 500 to 1000 mbar | -900 to 2000 mbar | 2000 to 6000 mbar |
0.005 % | 0.007 % | 0.005 % | 0.007 % | ||||
Pressure stability | 30 µbar / 0.0004 psi | 100 µbar / 0.0014 psi | 500 µbar / 0.007 psi | 100 µbar / 0.0014 psi | 150 µbar / 0.0021 psi | 350 µbar / 0.05 psi | 525 µbar / 0.076 psi |
Response time | down to 10 ms | ||||||
Settling time | down to 50 ms | ||||||
Minimum pressure increment | 12 µbar - 0.00017 psi | 120 µbar - 0.0017 psi | 480 µbar - 0.007 psi | 120 µbar - 0.0017 psi | 420 µbar - 0.006 psi | ||
Pressure supply | Max pressure + 0.5 bar and up to 10 bar Non corrosive, non explosive, dry and oil-free gases, e.g. air, argon, N2, CO2, ... |
||||||
Input vacuum | / | From -0.7 to -1 bar Compatible with vacuum pump or vacuum line |
|||||
Liquid compatibility | Non contact pump Any aqueous, oil, or biological sample solution. |
Please note that the max pressure value might vary by +/- 2.5%.
Instrument Specifications
Flow sensor compatibility | Compatible with the whole MFS and BFS range Monitoring and feedback loop flow control available |
||||
Flow rates | From 0,1 µL/min to 500 mL/min (indicative, please refer to the MFS and BFS series) |
||||
Liquid Compatibility | Non contact pump Any aqueous, oil, or biological sample solution. |
||||
Software control | Elveflow Smart Interface Windows 7, 8 and 10, both 32 and 64 bit versions supported |
||||
Software Development Kit |
Librairies available: Matlab, Python, Labview, C++ Windows 7, 8 and 10, both 32 and 64 bit versions supported Serial/UART communication protocol on request |
||||
Data management | Possibility to log and extract data (.csv): channel and sensor detailed information using ESI | ||||
Input profiles | Possibility to load profiles: ramp, sine, triangle, square or custom | ||||
Automation | Generate step-by-step sequences using the ESI built-in sequencer Load and save custom configurations (.csv) |
||||
Screen | LCD screen showing pressure and sensor from the channel | ||||
USB connection | USB B | ||||
Sensor connection | One M8-4 pins connecter available per channel Compatible with Elveflow sensors: MFS, MPS, MFP, MBD Custom analog sensor supply: 5-24 V Custom analog sensor readout : 0-10 V |
||||
TTL trigger | In and out available 0-5 V |
||||
Power consumption | 12 W (100 V to 240 V – 50 Hz to 60 Hz) | ||||
Casing dimensions (5) | 240 x 223 x 80 mm | ||||
Weight | 1.4 kg to 2.9 kg |
Documentation
products.specification
+
short_description
This is our best pressure/vacuum controller: the Elveflow OB1 MK4. Embedding the state-of-the-art technology for flow control from -900 mbar to 8 bar, this controller is 20 times more precise and 10 times faster than the other flow controllers on the