Burkert 8626 - User Manual

Questions and Answers

H
harrisonericAug 16, 2025
Why does the process value vary on my Burkert Controller?
- K
  Kevin SparksAug 16, 2025
  The process value may vary due to several reasons. Ensure a proper FE connection by connecting it to the earthing point with the shortest wires possible (minimum 2.5 mm²). If the controller is continuously correcting disturbances in an unstable pressure supply, install a suitable pressure regulator upstream. High residual ripple of the supply voltage may also be the cause, so select a suitable voltage source.
A
amy90Aug 22, 2025
What to do if the "ERROR" LED flashes on Burkert Controller?
- V
  vclarkAug 22, 2025
  If the "ERROR" LED flashes on your Burkert Controller, it could be due to a few reasons. The residual ripple of the supply voltage might be too high, so select a suitable voltage source (not industrial DC). Alternatively, there could be a serious error, such as sensor breakage or a faulty internal voltage supply, in which case you should send the device to the manufacturer for repair.
J
Jacob HarrisonAug 26, 2025
What does it mean when the "ERROR" LED lights up on Burkert Controller?
- E
  englishdaveAug 26, 2025
  If the "ERROR" LED lights up on your Burkert Controller, a less serious error has occurred. This could be because the last Autotune was not completed successfully, or a fault at an LED was detected. Try repeating the Autotune or resetting the error. With errors at LED or binary output, limited operation is possible.
J
Jennifer ScottAug 28, 2025
How to fix a Burkert Controller when the "POWER" LED does not light?
- B
  brandonreeseAug 28, 2025
  If the "POWER" LED does not light on your Burkert Controller, it is likely due to no electrical supply. Check the electrical connections to resolve this.
C
Claudia HernandezAug 31, 2025
Why does the "POWER" LED on my Burkert Controller extinguish periodically?
- A
  Alyssa MonroeAug 31, 2025
  If the "POWER" LED extinguishes periodically on your Burkert Controller, it could be due to a few reasons. The voltage supply might be collapsing periodically, causing the device to reset; in this case, select a power supply with adequate power. Alternatively, the loss on the connecting line might be too high, so increase the cable cross-section. You may also need to decrease the cable length.
T
Tony MurraySep 3, 2025
What does it mean when the "LIMIT (y)" LED lights on Burkert Controller?
- J
  Jacob RobbinsSep 3, 2025
  If you have a default configuration and the "LIMIT (y)" LED lights up on your Burkert MFC, the correcting variable of valve has reached almost 100 % and cannot correct to setpoint. Increase the supply pressure. Also, check and lower the piping resistance if necessary. Finally, check system dimensioning.
M
Mr. Jack Flores DVMSep 6, 2025
Why does my Burkert Controller still show a small flow when the setpoint value w = 0?
- J
  Jennifer OrtegaSep 6, 2025
  When the setpoint value w = 0, valve closed, no flow; but process value output shows a small flow, it could be because the operating pressure is significantly higher than that used for calibration, which increases intrinsic convection (only with 8716 and 8626). Execute an Autotune to adapt to the operating conditions. The incorrect installation position might increase intrinsic convection (only with 8716 and 8626), so install the MFC in the position calibrated or execute an Autotune to adapt to the operating conditions. Also, if a medium is being used other than that intended on calibration, return the device to the manufacturer for recalibration for the operating medium.
R
Rachel HodgesSep 9, 2025
Why is there no flow present in my Burkert Controller?
- K
  Kyle BrandtSep 9, 2025
  If there is no flow present in your Burkert Controller, it could be due to the setpoint being within the zero-point switch-off. Increase the setpoint to > 2 % of nominal flow. Another reason could be a different operating mode, so check the operating mode.
S
santosteresaSep 10, 2025
Why does my Burkert Controller tend to oscillate?
- B
  Brenda SaundersSep 12, 2025
  The Burkert Controller might be oscillating because the operating pressure is much higher than when the last Autotune was executed; in this case, execute an Autotune to adapt to the operating conditions. The control parameters might not correspond to the section behavior, so adapt the control dynamics with the PC software MassFlowCommunicator. Also, if a medium is being used other than that intended on calibration, return the device to the manufacturer for recalibration for the operating medium. Finally, the residual ripple of the supply voltage might be too high, so select a suitable voltage source.
R
Richard GrahamSep 12, 2025
Why is there still flow after a few seconds when the setpoint value w = 0 on my Burkert Controller?
- O
  ofoxSep 12, 2025
  If the setpoint value w = 0 and flow is still present after a few seconds, it is because the operating pressure is above the leak-tight pressure of the proportional valve. Lower the operating pressure to resolve this.

Burkert 8626 Specifications

General

Device Type	Flow Meter
Parameter Measured	Flow Rate
Power Supply	24 V DC
Output Signal	4-20 mA
Communication	Modbus
Housing Material	Stainless Steel
Protection Class	IP65
Accuracy	±0.5%
Pressure Rating	PN 16
Material	Stainless Steel