Endress+Hauser Micropilot FMR20 Compact Radar Level Transmitter

Name: Endress+Hauser Micropilot FMR20 Radar Transmitter – Manual
Brand: Endress+Hauser (E & H)

Description

Overview

The Endress+Hauser Micropilot FMR20 is a compact 26 GHz non-contact radar level transmitter purpose-built for continuous liquid level measurement in water, wastewater, and general utility applications across all industries. Thanks to a proprietary radar chip design that integrates the radio-frequency components directly onto a single board, the Micropilot FMR20 achieves one of the smallest footprints in its class, making it the natural choice for pump stations, lift stations, and storage tanks where panel and nozzle space is limited. The instrument outputs a 2-wire, 4 to 20 mA HART signal and measures level with an accuracy of ±2mm across ranges up to 20 metres, independent of medium density, viscosity, or conductivity, since the sensor never touches the process fluid.

With fast quotation turnaround and technical support, Seven Star LLC proudly supplies the Endress+Hauser Micropilot FMR20 to water utilities, municipalities, and industrial facilities throughout Oman and the wider GCC. Every unit supplied by our Muscat-based instrumentation division comes with manufacturer documentation and application support, with lead time confirmed at quotation.

Measurement Principle

The Micropilot FMR20 operates on the time-of-flight principle of pulse radar. A short 26 GHz microwave pulse is emitted from the antenna toward the liquid surface; the wave travels at the speed of light, reflects off the surface, and returns to the sensor – the core working principle behind every Endress+Hauser FMR20 installation. The transmitter’s onboard electronics precisely measure the elapsed transit time and convert it into a distance value, from which the empty space and, by subtraction from the tank height, the liquid level are derived. Because the calculation depends only on the speed of light and elapsed time, the measurement is unaffected by changes in vapor pressure, temperature gradients, density, or turbulence at the liquid surface, conditions that routinely degrade the accuracy of hydrostatic or ultrasonic alternatives.

With a 12° beam angle from its compact horn-style antenna, the FMR20 focuses its energy tightly enough to avoid interference from tank walls, ladders, and agitators in most standard vessels. Because the antenna never contacts the process medium, there is no moving mechanism to foul, no seal to wear, and no pressure drop introduced into the process, which translates directly into lower maintenance visits and a longer service interval for utilities operating remote lift stations across Oman’s interior and coastal governorates.

Engineering Design of the Endress+Hauser Micropilot FMR20

The FMR20 is built around a chemically resistant PVDF housing and antenna assembly, rated IP66/IP68 and NEMA 4X/6P for outdoor and submersible installation in open channels, wet wells, and sumps. The compact, low-profile enclosure accommodates thread connections from G1″/NPT1″ up to G2″/NPT2″, along with UNI slip flange options from DN80 to DN150 (3″ to 6″), giving specifying engineers flexibility when retrofitting existing nozzles on legacy tanks with an Endress+Hauser FMR20.

Commissioning is carried out either over the HART loop with a standard communicator or wirelessly through the SmartBlue app via Bluetooth®, which displays the live echo curve on any Android or iOS device, dramatically simplifying setup for technicians working at height or in confined-space wet wells. A 32-point linearization table is stored in the transmitter for direct volume or flow readout in irregular tanks and open channels, and an optional remote display (FHX50) can be fitted where the primary housing is not readily accessible for local readout.

Key Features

The Endress+Hauser FMR20 combines a compact form factor with the accuracy and reliability engineers expect from Endress+Hauser radar technology.

The Endress+Hauser FMR20 uses non-contact 26 GHz pulse radar measurement eliminates moving parts and process contact, removing routine maintenance associated with mechanical level devices.
Measuring accuracy of ±2mm across ranges to 20 metres supports both simple level indication and precision inventory or flow-linearized applications.
Bluetooth® commissioning via the SmartBlue app allows technicians to configure and view the echo curve directly from a smartphone without opening the housing.
On the Endress+Hauser FMR20, chemically resistant PVDF wetted parts and antenna withstand aggressive water, wastewater, and chemical dosing environments.
IP66/IP68 and NEMA 4X/6P ingress protection permits installation in flooded wet wells, open channels, and outdoor tank farms without additional enclosures.
Compact radar chip design integrates RF components onto a single board, giving the FMR20 one of the smallest footprints available in a 26 GHz radar transmitter.
The Endress+Hauser FMR20 2-wire loop-powered 4 to 20 mA HART output integrates directly into existing PLC, SCADA, and DCS infrastructure with no additional signal conditioning.
32-point linearization table enables direct volume, flow, or open-channel readout for irregularly shaped tanks and channels.

Industrial Applications

The Endress+Hauser FMR20 radar level transmitter is widely specified across municipal and industrial water infrastructure, including raw and treated water storage tanks, wastewater lift and pump stations, stormwater retention basins, and sewer network monitoring points. The Endress+Hauser FMR20 compact housing makes it especially well suited to confined manholes and package pump stations, where larger radar transmitters simply do not fit, and its chemical resistance supports use in dosing tanks and chemical storage across desalination and utility plants.

With engineering support in Muscat, Seven Star LLC supplies the Micropilot FMR20 to water authorities, EPC contractors, and industrial end users throughout Oman, including projects around Muscat, the Sohar and Salalah economic zones, and inland municipal networks, as well as broader GCC markets in the UAE, Saudi Arabia, Qatar, Bahrain, and Kuwait. Local application engineering support allows project teams to specify the Endress+Hauser FMR20 with confidence, with lead time and availability confirmed at quotation.

Technical Specifications

The table below summarizes the core specifications of the Endress+Hauser FMR20 relevant to sizing and installation planning.

Parameter	Specification
Model	Endress+Hauser FMR20
Measuring Principle	Non-contact pulse radar, 26 GHz
Measuring Range	Up to 20 m (66 ft) liquids
Accuracy	±2 mm (0.08 in)
Beam Angle	12°
Output Signal	2-wire, 4–20 mA HART
Process Connection	Thread G1″–G2″/NPT1″–NPT2″; UNI slip flange DN80–DN150 (3″–6″)
Wetted Materials	PVDF, PBT
Process Temperature	-40 to 80°C (-40 to 176°F)
Process Pressure	-1 to 3 bar
Ingress Protection	IP66/IP68, NEMA 4X/6P
Commissioning	HART communicator or Bluetooth® SmartBlue app

Request a Quote for Endress+Hauser Micropilot FMR20 Compact Radar Level Transmitter

Facility engineers and procurement teams across Oman and the GCC can request a formal RFQ for the Endress+Hauser FMR20 directly from Seven Star LLC, with lead time confirmed at quotation and full technical datasheets provided on request. With manufacturer documentation, our instrumentation division supports specification and sizing of every Endress+Hauser FMR20 from initial inquiry through ordering, with local technical support. Contact Seven Star LLC today to receive a formal quotation for your project.

Reviews

There are no reviews yet.

How would you rate this product?

About brand

Endress+Hauser makes process measurement instruments for flow, level, pressure, temperature and liquid analysis. Georg H. Endress and Ludwig Hauser started the business in Lörrach, Germany, on 1 February 1953, first selling level meters, and the Endress+Hauser name has been used since 1957. The group is headquartered in Reinach, Switzerland, and has been wholly owned by the Endress family since 1975.

Seven Star LLC is an independent supplier listing Endress+Hauser flowmeters, level and pressure transmitters, temperature assemblies and liquid analysis products for buyers in Oman and the GCC. Instruments are matched from the full order code on the nameplate.

Endress+Hauser company profile

Origin	Founded in Lörrach, Germany, on 1 February 1953 by the Swiss engineer Georg H. Endress and Ludwig Hauser
Headquarters	Endress+Hauser AG, Reinach (Basel-Landschaft), Switzerland
Ownership	Family owned; the Endress family has been the sole shareholder since 1975, and a family charter commits the company to stay family owned
Size	About 16,500 employees and sales of about EUR 3.7 billion (2023, as reported by the company)
Product families	Proline flowmeters, Micropilot and Levelflex radar, Liquiphant switches, Cerabar and Deltabar pressure, iTEMP and iTHERM temperature, Liquiline and Memosens liquid analysis

Milestones

1953: Georg H. Endress and Ludwig Hauser start the business in Lörrach on 1 February, first selling level meters.
1957: The Endress+Hauser name comes into use.
1975: The Endress family becomes sole shareholder.
2023: About 16,500 employees and sales of about EUR 3.7 billion, as reported by the company.

Endress+Hauser product lines

Line	Measuring principle	Typical use
Promass F 300, Promass 80F, 83F/84F	Coriolis mass flow	Direct mass flow and density of liquids and gases, hydrocarbon transfer and chemical dosing
Promag P 300, P 500, H 300, W 400, W 10, 50P	Electromagnetic flow	Water, wastewater, slurries and other conductive liquids
Prowirl F 200, 72F	Vortex flow	Steam, gas and low-viscosity liquids
Prosonic Flow 92F, t-mass 65F	Ultrasonic and thermal mass flow	Water lines; compressed air and industrial gases
Micropilot FMR62, FMR67, FMR60, FMR10B, FMR20, FMR50, FMR52	Free-space radar level, 80 GHz and 26 GHz	Tanks, process vessels, silos and open water channels
Levelflex FMP51, FMP50, FMP54, FMP55	Guided wave radar level	Level and interface in vessels, separators and bypass chambers
Liquiphant FTL51, Prosonic S FMU90	Vibronic point level; ultrasonic level	High and low level alarms, pump protection, open channel flow
Cerabar PMC71B, PMP51B, PMP71, Deltabar PMD78B, PMD75	Pressure and differential pressure	Process pressure, hydrostatic level and DP flow
iTEMP TMT82, TMT162, iTHERM TM101, TR66, TR10	Temperature transmitters and thermometers	RTD and thermocouple points with thermowells
Liquiline CM444, CM442, Memosens CPS11E, Stamolys reagents	Liquid analysis	pH, ORP, conductivity, dissolved oxygen and nutrient analysis in water treatment and process

Where Endress+Hauser instruments are used

In Oman and the GCC, Endress+Hauser instruments are common in oil and gas production and processing, refineries and petrochemicals, desalination and water networks, wastewater treatment, power plants and food and beverage plants. Coriolis meters measure hydrocarbon and chemical flows, electromagnetic meters cover water and wastewater, radar transmitters handle tank and silo level, and Liquiline analysers monitor water quality. Proline 300 and 500 flowmeters include Heartbeat Technology for in-situ verification, which reduces the need to remove a meter for checks.

Ordering Endress+Hauser instruments: what we need

The order code on the nameplate (for example PMP71-1QA1S11RDADU) defines every option: measuring range, process connection, materials, output, approvals and display. Send it with the serial number; Endress+Hauser can retrieve the original configuration from the serial number. For a new instrument add the medium, operating and design pressure and temperature, range, line size or tank geometry, process connection, wetted materials, output or protocol (4-20 mA HART, PROFIBUS, FOUNDATION Fieldbus, Modbus) and the hazardous-area approval required. Older models such as Promass 80/83 or Micropilot M are replaced by current Proline or 80 GHz Micropilot devices.

Facts checked against Endress+Hauser company history and product information, October 2026.

Browse Endress+Hauser products by category: Flowmeters, Level Transmitter, Pressure Instrumentation, Temperature, Liquid Analysis Sensors, Liquid Analytical Systems.

FAQ

Questions about the Endress+Hauser Micropilot FMR20 Compact Radar Level

Answers from our engineering team on installation, compatibility and integration.

01What makes the Endress+Hauser Micropilot FMR20 suitable for compact installations?

The FMR20 integrates its 26 GHz radar-frequency components onto a single compact chip, giving it one of the smallest housings available in a 26 GHz radar transmitter. This makes it ideal for confined manholes, package pump stations, and lift stations where larger radar units cannot be mounted.

02Does installing the FMR20 require process shutdown or tank modification?

No. The FMR20 mounts through a standard threaded or flanged nozzle and, because it is non-contact, requires no wetted moving parts or seals. Installation is typically completed in under an hour with commissioning performed live via the Bluetooth SmartBlue app, avoiding costly process downtime.

03What process connections and tank sizes is the FMR20 compatible with?

The FMR20 is available with thread connections from G1 inch/NPT1 inch up to G2 inch/NPT2 inch, and UNI slip flange options from DN80 to DN150 (3 to 6 inches), covering the majority of existing tank nozzles on water and wastewater infrastructure across Oman.

04Can the FMR20 integrate with existing SCADA or PLC systems?

Yes. The transmitter outputs a standard 2-wire, 4 to 20 mA HART signal that is compatible with virtually all legacy and modern SCADA, PLC, and DCS platforms without additional signal conditioning or gateway hardware.

05Is Seven Star LLC an experienced supply partner for Endress+Hauser products?

Yes. Seven Star LLC supplies Endress+Hauser (E & H) products to customers in Oman and the GCC and can provide the manufacturer documentation and technical support on request.