FMX21 Chinese Manual Overview
FMX21 is a high-performance level measurement instrument launched by Endress+Hauser, widely used in water treatment, chemical, food, and other industries. This Chinese manual is intended to help users quickly understand its installation, commissioning, and maintenance methods.
This article provides the download link for the official FMX21 Chinese manual and extracts key operating points for the reference of engineering technicians and procurement personnel.
Download FMX21 Chinese Manual.pdf
Product Technical Parameters
FMX21 adopts advanced radar measurement technology and is suitable for continuous measurement of liquid and solid levels. The following is an overview of the core parameters for selection and procurement reference.
| Parameter Item | Specification Description |
|---|---|
| Measurement Principle | Radar (frequency modulated continuous wave) |
| Measurement Range | 0 ~ 20 m (liquid), 0 ~ 10 m (solid) |
| Process Connection | Thread, flange (optional) |
| Process Temperature | -40 ~ +150°C |
| Process Pressure | -1 ~ +40 bar |
| Output Signal | 4~20 mA / HART, PROFIBUS PA (optional) |
| Protection Class | IP66/67, NEMA 4X |
Installation Steps and Precautions
Correct installation is the prerequisite for ensuring measurement accuracy. Please follow the steps below and pay attention to key details.
- Select the installation location: Avoid interference sources such as feed inlets and agitators, and ensure that the antenna emission direction is perpendicular to the medium surface.
- Fix the instrument: Use appropriate flange or threaded connections to ensure good sealing and avoid leakage.
- Electrical connection: Connect the power supply and signal lines according to the wiring diagram, pay attention to polarity, and ensure proper grounding.
- Check and tighten: After installation is complete, check whether all connections are firm and whether the protection class meets requirements.
Note: When used in hazardous areas, explosion-proof regulations must be observed, and models with corresponding explosion-proof certification must be selected.
Commissioning and Operation Guide
FMX21 supports local display and remote commissioning. The following is the basic commissioning process; for detailed menus, please refer to the complete manual.
Local Commissioning
- Enter the menu through the buttons on the instrument to set parameters such as measurement range and medium characteristics.
- Use the display module to view real-time measurement values and perform zero and full-scale calibration.
Remote Commissioning
- Use a HART handheld communicator or Endress+Hauser FieldCare software for configuration.
- Diagnostic information can be read remotely to improve maintenance efficiency.
Common Faults and Handling
When abnormal measurement occurs, refer to the table below for quick troubleshooting. If the problem persists, please consult the complete manual or contact technical support.
| Fault Symptom | Possible Cause | Handling Method |
|---|---|---|
| No display | Power not connected | Check power supply and wiring |
| Measurement value fluctuating | Medium disturbance or interfering echoes | Adjust installation position or enable filtering |
| Output signal out of range | Incorrect range setting | Reset the range |
| Communication failure | Address conflict or line fault | Check address and line |
Maintenance and Care Recommendations
Regular maintenance can extend the service life of the instrument and ensure measurement accuracy. It is recommended to perform an inspection every six months.
- Clean the antenna surface to avoid scaling or attachments affecting the signal.
- Check whether the seals are aging and replace them if necessary.
- Verify the consistency between the output signal and the displayed value.
For more detailed maintenance cycles and steps, please download the complete FMX21 Chinese manual.
Download FMX21 Chinese Manual.pdf