BRONKHORST FLOW-BUS - User Manual

Questions and Answers

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Tamara MorrisAug 15, 2025
Why are my BRONKHORST FLOW-BUS Measuring Instruments responding slowly to setpoint changes?
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  Sandra AlexanderAug 15, 2025
  If your BRONKHORST Measuring Instruments show no or slow response to setpoint changes, several factors could be at play. First, the slope value might be too high, affecting the ramp function for the setpoint signal; check and adjust it using a readout module or PC software. Secondly, the control mode or setpoint source may be incorrectly configured, directing the instrument to an unintended source; ensure the correct control mode and setpoint source are selected. A different instrument or PC on the FLOW-BUS could also be altering the setpoint; verify who has control over setpoint changes. Finally, incorrect polynomial factors could be the issue; confirm that the correct fluid is selected and compare the polynomial factors A through D against your calibration certificate.
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thomas10Aug 19, 2025
Why is there inaccuracy of measurement in BRONKHORST Measuring Instruments?
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  Crystal RiddleAug 19, 2025
  If you're experiencing inaccuracies with your BRONKHORST Measuring Instruments, it could be due to a few reasons. One possibility is that the wrong fluid (and consequently, incorrect calibration settings) has been selected. With up to 8 fluids selectable, ensure the correct fluid is chosen for your instrument. Also, verify that the instrument is powered correctly.
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Ashley PerezAug 22, 2025
What to do if master-slave controlling doesn’t function well in BRONKHORST Measuring Instruments?
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  Jonathan CalderonAug 22, 2025
  If the master-slave controlling isn't functioning correctly with your BRONKHORST Measuring Instruments, consider these potential causes: a lost connection to the master signal, which you should check to ensure the master output is correctly provided. Also, incorrect settings for this specific controlling mode, so verify the control mode and slave-factor settings are accurate.
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Timothy PierceAug 26, 2025
How to troubleshoot no or bad connection to FLOW-BUS in BRONKHORST Measuring Instruments?
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  steven34Aug 26, 2025
  If you're experiencing a poor or non-existent connection to the FLOW-BUS with your BRONKHORST Measuring Instruments, check the cabling to ensure it's correct. Also, verify the bus termination and the correct functioning of other modules on the bus, including PC programs with interface modules.
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Crystal BurnsAug 28, 2025
What to do if analog output range is too low or high in BRONKHORST Measuring Instruments?
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  gregorybrockAug 29, 2025
  If the analog output range is too low or too high on your BRONKHORST Measuring Instruments, verify that the desired analog output range is correctly selected.
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toddperezSep 1, 2025
How to fix no communication with PC software program for BRONKHORST Measuring Instruments?
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  Marissa KellySep 1, 2025
  If you're unable to establish communication with the PC software program for your BRONKHORST Measuring Instruments, begin by checking the interface settings, specifically for RS232, including the COM-port and baud rate. Additionally, ensure the interface has a proper connection to the FLOW-BUS by inspecting the cabling.
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Jill MatthewsSep 4, 2025
Why doesn’t controller function as wanted in BRONKHORST Measuring Instruments?
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  Crystal WalkerSep 4, 2025
  If the controller isn't functioning as expected on your BRONKHORST Measuring Instruments, the settings might be configured for different behavior than you intend. Also, change reponse factor settings for controller (see manual of readout/control module or PC-software)
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Mrs. Beverly KimSep 7, 2025
How to restore output signal on FLOW-BUS interface for BRONKHORST Measuring Instruments?
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  Aaron FerrellSep 7, 2025
  If there's no output signal on the FLOW-BUS interface of your BRONKHORST Measuring Instruments, it indicates a communication issue with the FLOW-BUS. Check the communication using a local readout module or a PC-test program.
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Jeffrey BergerSep 12, 2025
What to do, if I have other troubles with BRONKHORST Measuring Instruments?
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  Haley VasquezSep 12, 2025
  If you are experiencing other troubles with your BRONKHORST Measuring Instruments, one or more parameter settings could be wrong. Get back original factory settings by means of micro push-button on top (see manual 9.17.023).