The FLM-S, FLM-T, and FLM-P level sensors are designed for high-accuracy, continuous level detection of liquids. These sensors operate based on the magnetostrictive measurement principle, determining the position of a magnetic float with exceptional precision. This principle enables reliable and consistent measurements, unaffected by physical or chemical changes in the medium, including variations in temperature, conductivity, dielectric properties, pressure, foaming, vacuum, condensation, vapors, bubble formation, boiling effects, and density changes.

With the HART® interface, these sensors offer parallel measurement of overall levels and interface layers. Measurement results can be displayed proportionally to volume or height, ensuring versatile application in various industries.

Installation and commissioning are straightforward, requiring only an initial calibration without the need for subsequent recalibration. The float, process connection, and guide tube can be constructed from materials such as titanium, stainless steel (1.4571, 1.4435, 1.4539), or various plastics to meet application-specific requirements.

Special Features

• Customizable process- and procedure-specific solutions.

• Wide operating limits:

  • Operating temperature: -90 to +450 °C (-130 to +842 °F).

  • Operating pressure: Vacuum to 100 bar (1,450.4 psi).

  • Limit density: ρ ≥ 400 kg/m³ (25.0 lbs/ft³).

• High-resolution measurement: < 0.1 mm.

• Broad selection of electrical and process connections.

• Available in explosion-protected versions for hazardous environments.

Applications The FLM-S, FLM-T, and FLM-P level sensors are suitable for high-accuracy level detection across a wide range of industries and applications, including:

• Chemical and Petrochemical Industries: Precise level monitoring in tanks, reactors, and processing units.

• Natural Gas and Offshore Operations: Reliable performance in harsh and hazardous environments.

• Shipbuilding and Marine Applications: Effective liquid-level monitoring in ballast and storage tanks.

• Machine Building and Power Plants: Ensures accurate monitoring for industrial systems and equipment.

• Water Treatment Facilities: Suitable for process water and drinking water treatment systems.

• Food and Beverage Industry: Compliance with hygiene standards for liquid-level control.

• Pharmaceutical Industry: Accurate measurement for critical processing and storage applications.

These sensors are highly versatile and deliver consistent performance, making them ideal for applications requiring precision and reliability in challenging conditions.

The ALM level sensors are precision instruments designed for measuring and transmitting the level of liquids in various industrial applications. These sensors operate based on the float principle, utilizing magnetic transmission within a 3-wire potentiometer circuit. Their high-accuracy resistance measuring chain ensures near-continuous voltage output, enabling reliable signal transmission over long distances. Additionally, these sensors are suitable for deployment in hazardous environments, making them versatile and robust solutions for liquid level monitoring.

Key Features

• Utilizes the float principle with magnetic transmission for precise liquid level measurement.

• Continuous voltage output due to a closely stepped resistance measuring chain.

• Capable of long-distance signal transmission.

• Suitable for use in hazardous areas.

• Customizable process- and system-specific solutions available.

Applications

• Power generating equipment and power plants.

• Nuclear power plants.

• Water basins and cooling water tanks/pools.

• Normal operating conditions as well as accident scenarios.

Operating Conditions

• Temperature Range (Normal): -10°C to +70°C (+14°F to +158°F).

• Pressure (Normal): Ambient.

• Humidity: 100%.

• Length Options: Up to 20 m (65 ft).

• Operational Radiation Dose: ≤ 160 kGy (16 MRad).

Accident Conditions

• Temperature: Up to 156°C (312°F).

• Pressure: 7 bar (0.7 MPa).

• Mission Time: 1 year.

• Radiation Dose (Integrated): Up to 5.05 MGy (505 MRad).

• Seismic Resistance: Up to 2.5 g (with options for up to 5 g on demand).

The model RLT-3000 level sensor with temperature output combines the measurement of liquid level and temperature into a single, compact device. Constructed with high-quality stainless steel, it ensures compatibility with a variety of media, including oil, water, diesel, refrigerants, and other liquids.

The sensor utilizes a float-based measuring principle. A permanent magnet within the float interacts with the resistance measuring chain inside the guide tube, generating a proportional 4 ... 20 mA current output for level measurement. For temperature monitoring, the sensor incorporates a platinum measuring resistor (Pt100 or Pt1000) at the end of the guide tube, providing high-accuracy measurements conforming to Class B standards.

Additionally, the model RLT-3000 offers optional dual 4 ... 20 mA analogue outputs to enable enhanced monitoring and control capabilities.

Features

• Media Compatibility: Suitable for oil, water, diesel, refrigerants, and various other liquids.

• Level Measurement: Provides a 4 ... 20 mA output signal proportional to liquid level.

• Temperature Measurement: Features Pt100 or Pt1000 sensors with Class B accuracy.

• Optional Outputs: Offers up to two optional 4 ... 20 mA analogue outputs.

• Robust Design: Constructed from stainless steel for durability and corrosion resistance.

• Compact and Versatile: Combines two measurement functions in one device, reducing installation complexity.

Applications

• Machine Building: Ideal for liquid monitoring in hydraulic systems and cooling units.

• Hydraulic Power Packs: Ensures accurate level and temperature control for hydraulic applications.

• Compressors: Monitors coolant levels and temperatures for efficient performance.

• Cooling Systems: Provides precise measurements for liquid-based cooling operations.

The model RLT-3000 level and temperature sensor offers reliable performance, making it suitable for diverse industrial applications where liquid monitoring and temperature measurement are critical.

The model FLR-SC level transmitters with a reed measuring chain are designed for precise level measurement in liquid media. They operate based on the float principle with magnetic transmission, ensuring accurate and reliable readings. The magnetic system within the float actuates a resistance measuring chain, configured as a 3-wire potentiometer circuit, to generate a measurement voltage proportional to the fill level.

This finely stepped measurement voltage provides virtually continuous readings, offering high accuracy. The transmitter's head-mounted design can be configured wirelessly via Bluetooth®5.0 (BLE) using a smartphone or tablet. The measured values are communicated through Bluetooth® to display graphical level trends. Additionally, the instrument allows easy configuration of parameters such as instrument description, TAG number, and reference points (0% and 100%) through a user-friendly app.

Key Features

• Process- and procedure-specific solutions available.

• Wide operating limits:

  • Operating temperature: -80 ... +200 °C [-112 ... +392 °F]

  • Operating pressure: Vacuum to 80 bar [1,160.3 psi]

  • Minimum limit density: ρ ≥ 400 kg/m3 [25.0 lbs/ft³]

• Versatile electrical connections, process connections, and material options.

• Output signal: 4 ... 20 mA with additional Bluetooth® interface.

• Wireless configuration and monitoring via Bluetooth®-enabled devices.

• Integrated Bluetooth® beacon function for added versatility.

Applications

• Suitable for level detection in almost all liquid media.

• Ideal for industries requiring precise level measurement, including:

  • Chemical and petrochemical processing

  • Food and beverage production

  • Water and wastewater management

  • Pharmaceutical manufacturing

  • Power generation plants

• Perfect for remote monitoring and data logging applications.

• Enables quick and easy setup, commissioning, and reconfiguration through mobile devices.

• Effective for use in harsh environments with extreme temperatures and pressures.

With its advanced Bluetooth® configuration capabilities and robust design, the FLR-SC level transmitter provides a reliable and flexible solution for diverse industrial applications.

The model FLM-H magnetostrictive level transmitter is engineered to meet the stringent requirements of the food and beverage, pharmaceutical, and biotechnology industries. It is specifically designed for applications requiring compliance with hygienic standards and resilience to CIP/SIP cleaning processes. With exceptional chemical stability towards cleaning agents and high-temperature tolerance, the FLM-H transmitter provides reliable and precise level measurement.

The guide tube is directly welded to the process connection, ensuring a crevice-free joint that eliminates the need for additional sealings. This design promotes sanitary operation and ease of cleaning.

The level transmitter operates with a DC voltage supply of 10 ... 30 V and offers electronic output signals of 4 ... 20 mA or 4 ... 20 mA with HART® communication. Its hygienic sensor housing, rated up to IP68, is resistant to splash water and high-humidity environments, making it ideal for external cleaning processes.

The FLM-H level transmitter delivers accurate and reliable measurements, fulfilling the rigorous standards of sanitary applications.

• Fully welded and dead space-free design for hygienic applications

• Operating limits:

  • Temperature range: -40 ... +250 °C

  • Pressure range: Vacuum to 10 bar

• High precision with an accuracy of < 0.5 mm

• Insensitive to foaming, ideal for interface measurement

• Wide variety of hygienic process connections

• Robust construction with ingress protection up to IP68

Applications

• Food and Beverage Industry - Suitable for sanitary level measurements and resistant to cleaning processes

• Pharmaceutical Industry - Ensures compliance with strict hygiene standards and process reliability

• Biotechnology - Ideal for high-precision measurements and interface detection in critical processes

• Level Measurement in Fermenters - Designed for accurate monitoring in challenging environments with foaming and high humidity

The FLM-H magnetostrictive level transmitter combines reliability, precision, and hygienic design to support demanding industrial applications.