JUMO NESOS R20 LT Float Level Transmitter

Overview

JUMO NESOS R20 LT is a level transmitter that uses a float and reed chain to provide quasi-continuous level measurement of liquids in storage tanks and containers, operating according to the Archimedes’ principle. Delivering a resolution of up to 5.5 mm and a standard 4 to 20 mA output signal, the JUMO NESOS R20 LT is customizable with a wide choice of float materials and forms, and can optionally include an integrated temperature sensor or switch for combined level and temperature monitoring from a single measuring point.

As the official authorized partner and exclusive regional representative for JUMO, Seven Star LLC proudly supplies the JUMO NESOS R20 LT float level transmitter to water and wastewater, chemical, and industrial storage customers across Oman and the wider GCC. Every unit shipped through Seven Star LLC is genuine JUMO product with full manufacturer warranty and access to local technical support – ensuring facility engineers and procurement teams in Muscat, Sohar, and Salalah receive an authentic, factory-certified JUMO NESOS R20 LT backed by regional service.

Working Principle

The JUMO NESOS R20 LT measures liquid level according to the Archimedes’ principle: a float rides on the surface of the liquid and moves along a guide tube as the level changes, actuating a chain of reed switches positioned at fixed intervals inside the tube. As the float passes each reed switch position, a resistance value is generated that is converted into a standard 4 to 20 mA signal, or alternatively output as a raw potentiometric resistance value for reduced variants without an integrated head transmitter.

Because this measuring principle is fundamentally mechanical rather than relying on electrical properties of the medium, the JUMO NESOS R20 LT is unaffected by foam formation, conductivity (permittivity), pressure, vacuum, steam, or condensation – conditions that commonly disrupt capacitive or other electronic level measurement technologies. Level can be determined independently from container geometry, and the measurement remains stable and accurate regardless of medium temperature, since the reed switch actuation itself carries no temperature-dependent electrical characteristic.

Engineering Design of the JUMO NESOS R20 LT

The JUMO NESOS R20 LT covers a level measuring range from 0 m to 4 m, with process pressure ratings from -1 bar to 37 bar and process temperatures from -52°C to +180°C, giving it an exceptionally broad operating envelope for both cryogenic and elevated-temperature liquid storage applications. Available resolutions include 5.5 mm, 8.8 mm, 11 mm, and 17.6 mm, selected according to the precision requirements of the specific application, and floats are available in stainless steel or titanium, in either cylinder (Ø44) or sphere (Ø52) form, with in-house manufacturing enabling customer-specific float materials and shapes.

The transmitter carries ingress protection up to IP68, supporting fully submerged or heavily washed-down installations, and is approved for explosion-protected areas per ATEX and IECEx (Ex i intrinsically safe or Ex d flameproof enclosure configurations), as well as DNV marine classification, EAC, and railway testing per DIN EN 50155. Because the device has no pressurized housing, it does not fall under the Pressure Equipment Directive 2014/68/EU, a distinction confirmed by a separate TÜV SÜD certificate, simplifying its regulatory classification for procurement purposes.

Key Features

The JUMO NESOS R20 LT combines a proven, media-independent float measuring principle with broad certification coverage that makes it a standard choice for reliable liquid level measurement across demanding industries.

• Quasi-continuous level measurement via Archimedes’ principle with resolution as fine as 5.5 mm.
• Measurement is unaffected by foam, conductivity, pressure, vacuum, steam, or condensation in the process medium.
• A wide process pressure range (-1 bar to 37 bar) and temperature range (-52°C to +180°C) support both cryogenic and hot liquid applications.
• Float materials in stainless steel or titanium, in cylinder or sphere form, allow customer-specific application matching.
• Ingress protection up to IP68 supports fully submerged or heavily washed-down installations.
• ATEX and IECEx approvals (Ex i or Ex d) support installation in classified hazardous areas.
• DNV marine classification and railway testing per DIN EN 50155 extend suitability to shipbuilding and rail applications.
• An optional integrated temperature sensor or switch combines level and temperature monitoring in a single measuring point.

Industrial Applications

The JUMO NESOS R20 LT is deployed across water and wastewater engineering, chemical processing, oil and fuel storage, and shipbuilding wherever reliable, media-independent level measurement is required in storage tanks and containers. Typical duties include fuel and chemical storage tank level monitoring, wastewater treatment level control, and marine tank level measurement in vessels requiring DNV-classified equipment.

As the officially authorized partner for JUMO, Seven Star LLC distributes the JUMO NESOS R20 LT to water utilities, chemical storage terminals, and industrial facilities throughout Oman and the GCC. The transmitter is a strong fit for tank farms and storage terminals across the Sohar and Salalah industrial zones, as well as for water treatment and marine applications across Muscat that require dependable, hazardous-area-approved level measurement.

Technical Specifications

The table below summarizes the core specifications of the JUMO NESOS R20 LT level transmitter as supplied by Seven Star LLC.

Call To Action

Seven Star LLC supports the full procurement cycle for the JUMO NESOS R20 LT float level transmitter, from formal RFQ submission to regional warehouse stock availability, technical datasheet delivery, and direct consultation with our instrumentation division on float material, resolution, and hazardous area certification for your application. As the authorized partner for JUMO in Oman and the GCC, we ensure every JUMO NESOS R20 LT transmitter is delivered with full manufacturer warranty and dependable local technical support. Contact Seven Star LLC today to request a quotation or discuss your level measurement requirements.