FMR20 Chinese Manual Download
You can directly click the link below to obtain the FMR20 Chinese manual PDF file. This document covers complete installation, operation, and maintenance guidelines, and it is recommended that engineering technicians and procurement personnel download and keep it.
Download FMR20 Chinese Manual.pdf
FMR20 Product Overview
FMR20 is a radar level transmitter used for continuous level measurement, suitable for non-contact measurement of liquids and solid bulk materials. Its core advantages lie in high precision, strong anti-interference capability, and wide adaptability to process conditions.
This instrument is typically used in industries such as water treatment, chemicals, food and beverage, and metallurgy, and can replace traditional capacitive and ultrasonic level instruments.
Measurement Principle
FMR20 is based on frequency-modulated continuous wave (FMCW) radar technology, transmitting high-frequency microwave signals and receiving echoes reflected from the material surface. By analyzing the frequency difference, the distance is calculated, and then the level height is derived.
Because it uses non-contact measurement, the instrument is not affected by medium density, viscosity, temperature, or corrosiveness, making it suitable for complex working conditions.
Key Technical Parameters
The table below lists the typical technical specifications of the FMR20 for model selection and procurement reference. For specific values, please refer to the accompanying manual or nameplate.
| Parameter Item | Typical Value/Range |
|---|---|
| Measurement Principle | FMCW Radar |
| Measurement Range | 0~20 m (liquid) / 0~10 m (solid) |
| Process Connection | G1½ / NPT1½ / Flange |
| Process Temperature | -40°C ~ +150°C |
| Process Pressure | -1 ~ +16 bar |
| Output Signal | 4~20 mA / HART / Modbus |
| Protection Rating | IP67 / IP68 (optional) |
| Antenna Material | PTFE / 316L stainless steel |
Installation and Commissioning Steps
Correct installation and commissioning are key to ensuring the measurement accuracy of the FMR20. Please follow the steps below:
- Installation Position Selection: Avoid the feed inlet, agitator, and tank wall, and ensure the antenna is vertically aligned with the material surface.
- Mechanical Installation: Tighten the flange or thread according to the process connection specifications, and check whether the sealing gasket matches.
- Electrical Connection: Connect the power and signal lines according to the wiring diagram in the manual, and ground the shield at one end.
- Parameter Setting: Enter the tank height, medium type, output range, etc., via the HART communicator or commissioning software.
- Echo Optimization: Perform empty-tank and full-tank calibration, and enable false echo suppression if necessary.
- Verification Operation: Observe whether the output current and displayed value correspond linearly with the level change.
Installation Precautions
- The antenna should extend out of the installation nozzle to avoid reflection interference from the pipe wall.
- For solid silos, it is recommended to install a dust cover or purging device.
- In explosion-proof applications, intrinsically safe or flameproof models must be selected and relevant regulations must be followed.
- The cable entry must be sealed to prevent moisture from entering the housing.
Common Faults and Troubleshooting
If the FMR20 shows abnormal measurement, refer to the table below to quickly locate the problem. Most faults are caused by improper installation or incorrect parameter settings.
| Fault Symptom | Possible Cause | Troubleshooting Measure |
|---|---|---|
| No output signal | Power interruption/wiring error | Check power supply voltage and loop polarity |
| Measurement value jumps | Agitation/foam/condensation | Adjust installation position or enable filtering |
| Measurement value remains constant | Antenna scaling/blockage | Clean the antenna and check purging |
| Deviation too large | Incorrect tank height setting | Re-enter the correct tank height |
Model Selection and Procurement Recommendations
When purchasing the FMR20, please clarify the medium characteristics, process temperature and pressure, connection specifications, and output protocol. It is recommended to prioritize models with HART communication for easier later commissioning and integration.
Also confirm whether explosion-proof certification, hygienic connections, or high-temperature antenna extensions are required to ensure the instrument fully matches the on-site working conditions.
The above content is compiled based on the FMR20 Chinese manual. For specific operations, please refer to the latest official manual.