FTL33 Chinese Manual Download
The FTL33 Chinese manual provides detailed instructions on the installation, commissioning, parameter setting, and maintenance methods of this level switch. Click the link below to download the complete PDF document for on-site reference and archiving.
Download FTL33 Chinese Manual.pdf
FTL33 Product Overview
The FTL33 is a level switch used for liquids and bulk solids, detecting material level height based on capacitive or admittance principles. It has a compact structure and fast response and is widely used in the chemical, water treatment, food, and pharmaceutical industries.
- Measuring principle: Capacitive/admittance type, determining the presence or absence of material through capacitance changes between the probe and the vessel wall.
- Output mode: Relay, transistor, or NAMUR signal, suitable for different control systems.
- Process connection: Thread, flange, and other options to meet different installation requirements.
- Protection class: Up to IP67, suitable for humid and dusty environments.
Core Technical Parameters
The following are typical technical parameters of the FTL33. For specific values, please refer to the latest version of the Chinese manual.
| Parameter | Typical Value/Range |
|---|---|
| Supply voltage | DC 10~30 V or AC 20~250 V |
| Output signal | Relay/transistor/NAMUR |
| Process temperature | -40~+150 °C |
| Process pressure | -1~+40 bar |
| Protection class | IP66/IP67 |
| Wetted materials | 316L, PTFE, PFA, etc. |
Installation and Commissioning Steps
Pre-installation Preparation
- Confirm that the process connection size matches the vessel interface.
- Check whether the probe length meets the level detection point requirements.
- Ensure the supply voltage matches the instrument nameplate.
Installation Steps
- Install the FTL33 vertically or horizontally on the top or side wall of the vessel, avoiding direct impact of material on the probe.
- Tighten the process connection, using a sealing gasket if necessary.
- Connect the power supply and output signal cables according to the wiring diagram in the manual.
- After power-on, observe the indicator light and perform empty and full calibration.
Commissioning Points
- Sensitivity adjustment: Adjust according to the dielectric constant of the medium to avoid false alarms.
- Delay setting: Suppress false signals caused by stirring or fluctuations.
- Fail-safe mode: Select high-level or low-level fail-safe to ensure system safety.
Common Faults and Handling
The FTL33 is usually maintenance-free after correct installation, but if abnormalities occur, refer to the following troubleshooting methods.
| Fault Symptom | Possible Cause | Handling Method |
|---|---|---|
| No output signal | Incorrect power supply or loose wiring | Check power supply and wiring |
| False alarm | Sensitivity too high or material buildup on probe | Recalibrate or clean the probe |
| Output normally closed/normally open reversed | Incorrect fail-safe mode setting | Adjust the mode according to the manual |
Selection and Procurement Recommendations
When purchasing the FTL33, please confirm the process connection, material, output type, and certification requirements according to the actual working conditions. It is recommended to obtain the latest version of the Chinese manual and selection sample to ensure the instrument fully matches the site.
- Corrosive media: Choose PTFE or PFA coated probes.
- High temperature and high pressure: Confirm that the process temperature and pressure are within the allowable range.
- Explosion-proof occasions: Choose intrinsically safe or flameproof types and check the certification mark.