ELV-SPX-OB1

OB1-Microfluidic Flow Controller

1 to 4 channels pressure & vacuum microfluidic flow controller

Cutting-edge Microfluidic Flow Controller

Designed by scientists for scientists, the versatile and powerful OB1 MK4 pressure controller provides the perfect flow control for all kinds of applications.
Whether you need pressure or vacuum, low or high flow rate, for short or week-long processes and experiments, the OB1 MK4 is the ideal instrument for your microfluidic needs.

The best performance on the market: Piezoelectric Technology

The Elveflow OB1 MK4 is one of the best performing microfluidic flow control instruments worldwide that uses piezoelectric regulators. The piezoelectric technology gives you 20 times more precise and 10 times faster flow control than any other flow controller on the market.

OB1 microfluidics flow controller pressure outlets elveflow

Customizable & upgradable: 1 module, up to 4 channels, 5 pressure & vacuum ranges available

The OB1 MK4 can be configured according to your needs. In one piece of equipment, you can have up to 4 pressure and/or vacuum channels (and other customized options).
If your needs change, the instrument can be upgraded later, in any way you want.

Get the fastest flow rate control when
paired with a flow sensor

Connect the OB1 MK4 to a standard liquid flow rate sensor
(MFS)
or our premium Coriolis flow sensor
(BFS, suitable for both liquid and gas)
to directly control the flow rate in your chip. The system continuously calculates the pressure and maintains the desired and constant flow rate.

Sensor reading unit for Elveflow products with software

Full control software, SDK, and UART communication

Single and intuitive software to get started in a few clicks and automate complex and long experiments.
The SDK libraries allow you to control the OB1 MK4 using your own code while connecting it to other instruments.
The MK4 is also equipped with UART communication protocol in addition to the ESI and SDKs control, allowing it to communicate with most control systems, such as Mac, Linux, Arduino, PLC.

OEM version available

The OB1 MK4 can be used on a bench setup or embedded in your own product.
Elveflow has a solution for every step of your research & development.
Discover our
OB1 MK4 OEM solution.

‍

OB1 MK4 CHANNEL PRESSURE RANGE	0 to 200 mbar¹ (0 to 2.9 psi)	0 to 2,000 mbar¹ (0 to 29 psi)	0 to 8,000 mbar¹ (0 to 116 psi)	-900 to 1,000 mbar¹ (-13 to 14.5 psi)	-900 to 6,000 mbar¹ (-13 to 87 psi)
Pressure stability (2)	0.015% FS 30 µbar (0.0004 psi)	0.005% FS 100 µbar (0.0014 psi)	0.006% FS 500 µbar (0.007 psi)	-900 to 500 mbar: 0.005% FS 100 µbar (0.0014 psi) 500 to 1,000 mbar: 0.007% FS 150 µbar (0.0021 psi)	-900 to 2,000 mbar: 0.005% FS 350 µbar (0.005 psi) 2,000 to 6,000 mbar: 0.007% FS 525 µbar (0.008 psi)
Response time (3)	down to 10 ms
Settling time (4)	down to 50 ms
Minimum pressure increment	0.006% FS 12 µbar – 0.00017 psi	0.006% FS 120 µbar – 0.0017 psi	0.006% FS 480 µbar – 0.007 psi	0.0064% FS 120 µbar – 0.0017 psi	0.0061% FS 420 µbar – 0.006 psi
Pressure supply	1.5 bar to 10 bar Non corrosive, non explosive, dry and oil-free gases, e.g., air, argon, N2, CO2, …
Input vacuum (5)	/	/	/	Any value from -0.7 to -1 bar Compatible with vacuum pump or vacuum line	Any value 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.

⁽¹⁾ Max pressure value might vary by +/- 2.5%

‍⁽²⁾Pressure stability (standard deviation) measured over the full pressure range with an external high accuracy pressure sensor (Druck DPI150)

‍⁽³⁾ Time required to reach 5% of the setting point. Depends on the computer operating system

‍⁽⁴⁾ Time required to reach 95% of the set point. Volume dependent – Measurement was done on 12 mL reservoir for a set point from 0 to 200 mbar

‍⁽⁵⁾ A vacuum source is mandatory for calibration and use of dual channels even if the channels are to be used in pressure only

NEED MORE INFORMATION ABOUT THIS PRODUCT?

Send us your email

Flow control
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.
Control & monitoring
Software control	Elveflow Smart Interface – Windows 7, 8, 10, both 32 and 64 bit versions supported
Software Development Kit	Libraries available: Matlab, Python, LabView, C++ – Windows 7 & 10, both 32 & 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 sequence management Log and export custom configurations (CSV)
Screen	LCD screen showing pressure and sensor flow rate in real time

Electrical Specifications
Input Voltage (V)	24V
Typical Power (W)	12W
Provided Power Supply Specifications	Supply Voltage Range (V): 100 to 240 VAC Supply AC Frequency (Hz): 50 to 60 Hz Maximum Output Current (A): 1.5 A Maximum Output Power (W): 36W
Interface	USB Type B
Communication Type	Serial
Software Control	ESI
Sensor Connection	One M8 4-pins connector per channel
Compatibility	Elveflow sensors: MFS, MPS, MFP, MBD Custom sensors: 5 to 24V supply voltage, 0 to 10V readout voltage
Triggers	Input and Output TTL signal 0V or 5V
Other
Casing dimensions	(length x width x height): 240 x 223 x 80 mm
Weight	1.4 kg to 2.9 kg