Challenges and Solutions for Point Level Detection in the Food Industry
In food and beverage production, point level detection is a critical step to ensure product quality and production efficiency. Traditional level switches tend to accumulate residues at installation gaps, breeding bacteria and failing to meet hygiene standards. Therefore, choosing a flush-mounted point level switch suitable for the food industry is crucial.
Liquipoint FTW33 is designed to solve this problem. It uses a flush-mounted design, with the sensor surface flush with the inner wall of the vessel, leaving no gaps or dead corners. This effectively prevents material residue and microbial growth, meeting the hygiene requirements of the food industry.
Liquipoint FTW33 Product Introduction
Liquipoint FTW33 is a capacitive point level switch launched by Endress+Hauser, optimized for hygienic applications in the food industry. Its compact design and multiple process connection options make it easy to integrate into various tanks and pipes.
Working Principle
Liquipoint FTW33 is based on the capacitive measurement principle. When the medium covers the sensor probe, the capacitance value changes, triggering a switch signal. This principle is suitable for level detection of liquids, pastes, and granular solids.
Due to the flush-mounted design, the sensor does not protrude into the vessel interior, avoiding material buildup and clogging, making it particularly suitable for viscous or scaling media.
Main Features
- Flush-mounted: No gaps, no dead corners, compliant with hygiene standards.
- Multiple process connections: Thread, flange, clamp, etc., adaptable to different equipment.
- High temperature and pressure resistance: Process temperature up to 150°C, pressure up to 40 bar.
- High protection rating: IP66/IP68, suitable for harsh environments.
- Output options: Relay, transistor, NAMUR, etc., meeting different control system requirements.
Technical Parameters
| Parameter | Value |
|---|---|
| Measurement principle | Capacitive |
| Process temperature | -40°C ~ +150°C |
| Process pressure | -1 ~ +40 bar |
| Protection rating | IP66/IP68 |
| Output signal | Relay/Transistor/NAMUR |
| Process connection | Thread, flange, clamp, etc. |
| Wetted materials | PEEK, stainless steel 316L |
Installation and Commissioning Guide
Correct installation and commissioning are key to ensuring the long-term stable operation of Liquipoint FTW33. The following steps help you complete the installation quickly.
Installation Steps
- Confirm that the process connection size matches the vessel interface and select the appropriate sealing ring.
- Install the sensor flush on the vessel wall or pipe, ensuring the probe surface is flush with the inner wall.
- Tighten the process connection according to the torque requirements to avoid over-tightening and damaging the seal.
- Connect the power supply and output signal cables, paying attention to correct polarity.
- After power-on, perform empty tank and full tank calibration to ensure accurate switch point.
Commissioning Points
- For viscous media, multi-point calibration is recommended to improve detection reliability.
- Regularly inspect the probe surface and remove any possible residues.
- In high-temperature or high-pressure applications, ensure the process connection and seals meet the operating conditions.
Application Advantages and Selection Recommendations
Liquipoint FTW33 has significant advantages in the food industry, especially suitable for the following scenarios:
- Dairy: Level detection of milk, yogurt, etc.
- Beverages: High and low level monitoring of syrup, juice, etc. in tanks.
- Condiments: Level control of viscous media such as sauces and ketchup.
- Baking: Level detection of solid particles such as flour and powdered sugar.
When selecting, please choose the appropriate model and output method based on the medium characteristics (conductivity, viscosity, temperature, pressure) and process connection requirements. For applications with extremely high hygiene requirements, it is recommended to choose PEEK material and clamp connection for easy cleaning and sterilization.
Summary
With its hygienic design, high reliability, and flexible configuration, the Liquipoint FTW33 flush-mounted point level switch is an ideal choice for level detection in the food industry. Through correct installation and commissioning, it can effectively improve production efficiency and ensure food safety.
For more technical details or selection support, please consult our engineering team.