How to troubleshoot no power on my BRONKHORST Controller?
If your BRONKHORST Controller shows no power and the LEDs are not lit, the first thing to check is the power supply. Also, verify the cable connection. If these steps don't resolve the issue and you suspect an internal fuse has blown due to a prolonged short, the unit may need to be returned to the factory.
What to do if my BRONKHORST Controller shows maximum output signal?
If the BRONKHORST Controller's output signal is at its maximum (131.07%), it could be due to several reasons. The flow might be too high, causing the valve to be fully open, so try closing the valve. Alternatively, for normally opened valves, the valve may be in a 'Safe State', so you should remove the cause of 'Valve Safe State'. If neither of these resolves the issue, there may be a pcb/sensor failure, requiring a return to the factory.
Why is the output of my BRONKHORST Controller oscillating?
If your BRONKHORST Controller's output is oscillating, the controller settings might be incorrect, specifically the PID settings may be too fast, so try decreasing the Controller Speed value. Another potential cause is that the inlet/outlet pressure is either too high or too low, so you should adjust the pressure or set the correct instrument pressure with FlowTune™. Finally, the wrong gas may be selected, so set the correct process gas with FlowTune™.
What to do if my BRONKHORST Controller has zero output signal?
If your BRONKHORST Controller is showing a zero output signal, it could be due to several reasons. First, check if the setpoint is accepted and if the control mode is correct. If the setpoint is too low, give a setpoint >2%. If the valve is in 'Safe State' (for normally closed valves), remove the cause of 'Valve Safe State'. If none of these solves the issue, it may indicate a pcb/sensor failure or a blocked/contaminated laminar flow element, both requiring a return to the factory.
Why my BRONKHORST Controller setpoint cannot be achieved?
If your BRONKHORST Controller cannot achieve the setpoint, it may be because the pressure difference across the instrument is insufficient to achieve the requested flow rate, so check the inlet/outlet pressure. Alternatively, there may be a stoppage, so remove any contamination. In some cases, the valve may be blocked or damaged, requiring a return to the factory.
What to do if flow signal is gradually decreasing on my BRONKHORST Controller?
If the flow signal of your BRONKHORST Controller is gradually decreasing without any setpoint change, it may be because the pressure difference across the instrument is insufficient to achieve the requested flow rate, so check the inlet/outlet pressure. Another possible cause is process gas condensation, in which case you should decrease the pressure or increase the gas temperature.
Why does my BRONKHORST Controller have a non-zero output signal when valve is closed?
If your BRONKHORST Controller shows a non-zero output signal when the valve is closed, it could be due to a leaking valve (through the valve), so check the valve specifications for leak-tightness through the valve. It may also be due to a non-zero offset signal (which occurs at upward/downward placement at higher pressures), so see Adjusting zero point.
How to fix no power on BRONKHORST Measuring Instruments?
If your BRONKHORST Measuring Instruments show no power (LEDs are not lit), check the power supply and cable connections. If the internal fuse has blown due to a long-lasting shortage, return the device to the factory.
What to do if setpoint cannot be achieved on BRONKHORST Measuring Instruments?
If the setpoint cannot be achieved on your BRONKHORST Measuring Instruments, check the inlet and outlet pressure to ensure sufficient pressure difference across the instrument. Remove any contamination that may be causing a stoppage. If the valve is blocked or damaged, return the instrument to the factory.
Why is there a maximum output signal on BRONKHORST Measuring Instruments?
If your BRONKHORST Measuring Instruments display a maximum output signal (131.07%), it could be due to the flow being too high, causing the valve to be fully open. In this case, close the valve. If the valve is in 'Safe State' for normally open valves, remove the cause of the 'Valve Safe State'. If there is a pcb/sensor failure, return the instrument to the factory.
Details the contents and coverage of the instruction manual for the EL-FLOW® Prestige series.
Describes the specified applications and limitations for EL-FLOW® Prestige instruments.
Provides an overview of the EL-FLOW® Prestige series, highlighting its technology and capabilities.
Details the EL-FLOW® Prestige PI variant, emphasizing its active pressure compensation features.
Lists all necessary documentation for basic operation and maintenance, including downloadable resources.
Explains how to interpret the model key on the serial number label for technical properties.
Guides users to check the serial number label for matching functional properties before installation.
Outlines test pressure, sealing material compatibility, and ambient conditions for instrument operation.
Provides guidelines for optimal performance regarding instrument mounting positions and environment.
Specifies requirements for fluid stream piping and tubing to ensure reliable performance.
Details instructions for installing the EL-FLOW® Prestige in the process line, including leak checks.
Explains electrical connection requirements, power supply, and safety compliance for the instrument.
Covers analog, RS232, RS485, and fieldbus communication options for the instrument.
Describes the function of the micro switch and LEDs for monitoring and starting actions.
Provides recommendations for powering the instrument on and off, and warm-up procedures.
Guides on initial setup, including purging for corrosive media and initial zero point adjustment.
Explains factory calibration and requirements for periodic inspection or recalibration.
Covers maintenance requirements, emphasizing that no regular maintenance is typically needed.
General guidelines for mass flow measurement and control using EL-FLOW® Prestige instruments.
Details the Multi Fluid/Multi Range functionality for reconfiguring the instrument.
Explains the default valve state when the instrument is unpowered or loses communication.
Describes the available communication interfaces via D-sub and optional fieldbus connectors.
Covers simultaneous operation via analog, RS232/RS485, and optional fieldbus interfaces.
Details the analog signals available for measurement and setpoint through the D-sub connector.
Provides guidance on cabling for analog operation using a D-sub connector.
Introduces advanced features accessible via RS232 communication compared to analog operation.
Explains how to establish RS232 communication with a computer using Bronkhorst® tools.
Describes connecting the instrument to a fieldbus system while maintaining RS232 communication.
Details operating instruments using the E-8000 module for power and RS232 communication.
Explains accessing instrument functions via a BRIGHT readout and control module.
Covers operating instruments via RS232 using the Bronkhorst® FlowDDE server application.
Lists examples of free Bronkhorst® DDE client applications like FlowPlot and FlowView.
Details the supported baud rates for RS232 communication and setup procedures.
Focuses on RS485 communication using FLOW-BUS or Modbus protocols.
Provides cabling examples for EL-FLOW® Prestige instruments in an RS485 fieldbus system.
Discusses software requirements for Modbus operation and compatibility with Bronkhorst® tools.
Covers configuration of baud rate, node address, and parity for RS485 settings.
Lists optional fieldbus systems like PROFIBUS DP and DeviceNet™ for EL-FLOW® Prestige.
Details the PROFIBUS DP fieldbus standard and its application with EL-FLOW® instruments.
Explains the DeviceNet™ interface and its compliance with ODVA specifications.
Describes the EtherCAT® high-performance Ethernet fieldbus system for automation technology.
Details the PROFINET interface for data exchange between I/O controllers and devices.
Covers supported configurations for PROFIBUS DP, DeviceNet™, EtherCAT®, and PROFINET.
Explains the function of the instrument's LED indicators for status and error reporting.
Describes special functions accessible via the multifunctional switch, including normal operation.
Details accessing functions like auto-zero, reset, and flash mode using the micro switch.
Explains how to access functions like factory reset and configuration mode during power-up.
Describes how to read and change the instrument's control mode using LED indications.
Explains how to read and change network settings like node address and baud rate.
Introduces common parameters for digital communication with the instrument.
Describes commonly used parameters for digital operation of the EL-FLOW® Prestige.
Details parameters for basic measurement and control functions, including measure and setpoint.
Covers parameters for secondary outputs like temperature and pressure.
Details parameters for identifying the instrument, such as User Tag and Serial Number.
Covers alarm and counter settings, accessible via software or readout units.
Explains the necessity and methods for adjusting the zero point of the instrument.
Details the manual procedure for adjusting the zero point using the multifunctional switch.
Explains the digital procedure for adjusting the zero point via RS232 communication.
Lists compatibility of sealing materials with commonly used gases for the instrument.
Covers advanced parameters for instrument configuration and operation.
Details advanced parameters related to measurement and control, like Fmeasure and Fsetpoint.
Explains special parameters such as Init Reset, Reset, Wink, and Control Mode.
Covers parameters for selecting and configuring fluid sets for the instrument.
Details parameters related to fluid properties like Capacity, Capacity Unit, and Controller Speed.
Explains parameters for configuring properties of fluid mixtures used with the instrument.
Details alarm settings, modes, and parameters like Alarm Mode and Alarm Info.
Covers counter settings, modes, units, limits, and setpoint behavior.
Explains how to configure network settings for fieldbus and power supply connections.
Details setting up master/slave relationships within a FLOW-BUS system.
Highlights special features like customized I/O options and default control mode changes.
Describes the customized input/output functions available through the 9-pin D-sub connector (pin 5).
Provides procedures for changing the instrument's default control mode via IO Status parameter.
Guides users on interpreting LED indications and finding error/warning information.
Details methods for resetting the instrument to pre-configured factory settings.
Lists common symptoms, possible causes, and actions for troubleshooting instrument problems.
Provides information on obtaining current product details and contacting Bronkhorst service.
Provides instructions for safely removing and returning instruments, including handling hazardous fluids.
Explains the process for disposing of electrical and electronic equipment according to WEEE directive.
General| Accuracy | ± 0.5% Rd plus ± 0.1% FS |
|---|---|
| Protection Class | IP40 |
| Response Time | < 500 ms |
| Operating Temperature | -10°C to +70°C |
| Power Supply | 15...24 VDC |
| Communication Protocols | Analog, RS232, Modbus RTU/ASCII, PROFIBUS DP, DeviceNet, FLOW-BUS, EtherCAT, PROFINET, EtherNet/IP |
| Material (Wetted Parts) | Stainless steel 316L |
| Gas Compatibility | compatible with corrosive gases |
| Turndown Ratio | 1:100 |
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