FTL325N Product Overview
FTL325N is a high-performance level switch widely used for limit detection of liquids and bulk solids. It adopts advanced RF admittance technology, which can effectively overcome interference such as buildup and foam, ensuring stable and reliable measurement. This article provides the FTL325N Chinese manual download and compiles key technical information for quick reference by engineering technicians and procurement personnel.
Technical Parameters and Selection
Core Parameters Overview
| Parameter | Value/Description |
|---|---|
| Supply Voltage | 24V DC or 220V AC |
| Output Type | Relay output, transistor output |
| Process Connection | Thread, flange |
| Process Temperature | -40°C ~ +150°C |
| Process Pressure | -0.1 ~ 4.0 MPa |
| Protection Class | IP66/IP67 |
| Explosion-proof Grade | Ex d IIC T6 Gb |
Selection Points
- Select probe material based on medium characteristics (e.g., 316L, PTFE).
- Determine process connection specifications based on process pressure and temperature.
- Select output type based on control requirements (relay or transistor).
- For explosive environments, confirm explosion-proof grade and certification.
Installation Guide
Installation Steps
- Confirm the installation location, avoiding feed inlet and agitator to prevent false signals.
- Open a hole on the tank and weld or thread the mounting base.
- Screw in or flange-mount the FTL325N probe, ensuring good sealing.
- When wiring, strictly follow the terminal definitions in the manual and pay attention to power polarity.
- After installation, check the protection class and tighten the cable gland.
Installation Precautions
- For horizontal installation, the probe should be tilted downward about 20° to avoid material accumulation.
- For vertical installation, the probe should extend deep enough into the tank to prevent buildup.
- For adhesive media, it is recommended to use a probe with PTFE coating.
- Ensure good grounding to improve anti-interference capability.
Commissioning and Calibration
Commissioning Steps
- After power-on, observe the indicator light status; normally the power light is always on.
- In an empty tank state, adjust the sensitivity potentiometer so that the output is in the "no material" state.
- Add medium into the tank up to the probe position, and adjust the potentiometer so that the output switches.
- Verify several times repeatedly to ensure reliable operation.
- Lock the potentiometer to prevent accidental operation.
Calibration Tips
- Use the teach function to automatically learn empty tank and full tank states.
- For conductive media, appropriately reduce sensitivity to avoid false alarms.
- For insulating media, increase sensitivity to ensure detection.
Common Faults and Handling
| Fault Phenomenon | Possible Cause | Handling Method |
|---|---|---|
| No output signal | Power supply reversed or insufficient voltage | Check power polarity and voltage |
| Output normally closed/normally open | Improper sensitivity setting | Recalibrate sensitivity |
| False alarm | Probe buildup or interference | Clean probe, check grounding |
| Output operates when no material | Medium adhesion | Use anti-stick coated probe |
Maintenance and Care
- Regularly check the probe for damage, corrosion, or buildup.
- Use a soft cloth and neutral detergent when cleaning to avoid scratches.
- Verify output operation reliability once a year.
- Ensure material compatibility when replacing sealing rings.
Conclusion
Correct selection, installation, and commissioning are key to ensuring long-term stable operation of the FTL325N. For more detailed wiring diagrams, dimension drawings, and certification information, please download the complete FTL325N Chinese manual. The content of this article is for reference only; for actual application, please refer to the official manual.