FTL20 Chinese Manual Download
FTL20 is a commonly used level switch in industrial sites, widely applied for limit detection of liquid and solid material levels. To facilitate engineering technicians and procurement personnel in quickly obtaining official documents, this article provides a download entry for the FTL20 Chinese manual and simultaneously organizes key usage points.
Click to download: FTL20 Chinese Manual.pdf
FTL20 Product Overview
FTL20 is a level switch based on capacitive or vibration principles, suitable for various industrial applications. Its core advantages lie in high reliability, easy installation, and maintenance-free design, effectively replacing traditional mechanical switches.
Main Application Scenarios
- High and low level alarms for liquid storage tanks
- Full/empty detection of powder or granular solid silos
- Pump control and overflow protection
- Process industries such as chemical, water treatment, food and beverage
FTL20 Technical Parameters
Before selection and installation, be sure to verify the following key parameters to ensure the instrument matches the on-site working conditions.
| Parameter | Typical Value/Range |
|---|---|
| Supply Voltage | DC 24V or AC 220V (depending on model) |
| Output Signal | Relay contact / PNP / NPN |
| Process Connection | G1", G1-1/2", flange, etc. |
| Process Temperature | -40℃ ~ +150℃ |
| Process Pressure | -0.1 ~ 4 MPa |
| Protection Class | IP65 / IP67 |
| Wetted Material | Stainless steel, PTFE, ceramics, etc. |
FTL20 Installation Steps
Correct installation is the prerequisite for ensuring long-term stable operation of the FTL20. Please follow the steps below:
- Confirm the installation position, avoiding the feed inlet and agitator to prevent false triggering.
- According to the process connection specifications, drill holes on the tank or pipe and weld/thread the base.
- Screw in or flange-mount the FTL20 probe, ensuring good sealing and no leakage.
- Check whether the probe extends to the appropriate depth inside the tank; generally, it is recommended that the probe tip be lower than the lowest material level.
- Connect the power supply and output signal wires according to the wiring diagram in the manual, paying attention to polarity.
FTL20 Commissioning and Calibration
The FTL20 is usually calibrated at the factory, but on-site commissioning is recommended after medium changes or installation.
Commissioning Points
- After power-on, observe the indicator light status to confirm normal power supply.
- In an empty tank state, adjust the sensitivity so that the switch output is in the "empty" state.
- Add medium to the probe position and confirm that the output switches to the "full" state.
- If the output is reversed, adjust the high/low level mode or recalibrate.
FTL20 Troubleshooting
When the FTL20 malfunctions, refer to the table below for quick troubleshooting.
| Fault Symptom | Possible Cause | Solution |
|---|---|---|
| No output signal | Power not connected or wiring error | Check power supply and wiring polarity |
| Output always on/off | Probe buildup or improper sensitivity | Clean the probe and recalibrate |
| False alarm | Installation position close to feed inlet | Adjust installation position or add a baffle |
| Indicator light not on | Module damaged | Contact the manufacturer for replacement |
Maintenance and Care Recommendations
The FTL20 is a maintenance-free instrument, but regular inspections can extend its service life.
- Check the probe quarterly for scaling, wear, or corrosion.
- Use a soft cloth and neutral detergent when cleaning to avoid scratching the probe.
- Check the process connection for leaks and whether fasteners are loose.
- After long-term shutdown, recalibration is recommended before re-commissioning.
Summary
This article provides the download of the FTL20 Chinese manual and systematically organizes product overview, technical parameters, installation and commissioning, troubleshooting, and maintenance points. Correct selection, standardized installation, and regular maintenance can ensure the long-term stable operation of the FTL20 level switch in industrial sites.