Endress+Hauser High Accuracy E+H Micropilot FMR51 Industrial Radar Level

MOQ： 1 pc
Price： USD 2200
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Payment Terms	T/T
Supply Ability	100 pc
Delivery Time	7-14 days
Wetted Materials	316L stainless steel
Weight	0.5 kg
Diaphragm Material	Ceramic
Ingress Protection	IP67
Operating Temperature	-40 to 85°C
Mounting Method	DIN rail or wall mount
Wetted Parts Material	316L stainless steel
Hart Protocol	Available
Warranty	12 months
Process Connection	1/2" NPT male
Structure	Control
Electrical Connection	M12x1
Flange Material	316SST
Customized Support	OEM, ODM, OBM
Material	Stainless Steel
Brand Name	E+H
Model Number	FMR51
Place of Origin	Germany

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Product Specification


Payment Terms	T/T	Supply Ability	100 pc
Delivery Time	7-14 days	Wetted Materials	316L stainless steel
Weight	0.5 kg	Diaphragm Material	Ceramic
Ingress Protection	IP67	Operating Temperature	-40 to 85°C
Mounting Method	DIN rail or wall mount	Wetted Parts Material	316L stainless steel
Hart Protocol	Available	Warranty	12 months
Process Connection	1/2" NPT male	Structure	Control
Electrical Connection	M12x1	Flange Material	316SST
Customized Support	OEM, ODM, OBM	Material	Stainless Steel
Brand Name	E+H	Model Number	FMR51
Place of Origin	Germany
High Light	industrial radar level transmitter ，high accuracy level transmitter ，E+H Micropilot FMR51 transmitter

What is Radar Time-of-Flight Level Measurement

It’s a non-contact method to measure level (height) of liquids, pastes, slurries etc., inside a vessel or tank.
The instrument emits short microwave pulses (radar impulses) downward from a reference point (usually the process connection). These pulses travel through air or vapor, reflect off the surface of the medium, and return to the antenna.
The key measurement is the time of flight (ToF), i.e. how long the pulse takes to go from the device to the surface and back. Since electromagnetic waves travel at the speed of light (modified by the medium), the distance can be calculated as:

D=c⋅t2D = frac{c cdot t}{2}D=2c⋅t

where
DDD = distance from reference to the surface
ttt = round-trip time
ccc = speed of light (in the medium, usually close to in air)

From that distance, knowing the “empty” height (or reference point), the actual level (how full) of the tank is derived.
Because the measurement is non-contact, there is no immersion of the instrument into corrosive or difficult media; fewer issues with buildup, corrosion, etc. Also less maintenance and easier safety/hygiene compliance.

Micropilot FMR51 — Overview & Key Features

The Micropilot FMR51 is a radar ToF level transmitter from Endress+Hauser, optimized for aggressive liquids and hygiene-sensitive applications.

Here are its important specifications, strengths, and special features:

Parameter / Feature	Value / Description
Process media	Liquids, pastes, slurries; especially aggressive / corrosive media; hygienic / food & life sciences environments.
Antenna	Flush-mounted, horn antenna fully encapsulated / filled with PTFE (a chemically resistant material). This helps with hygiene and resisting corrosion.
Measuring range	Standard version: up to ~ 40 m; with “Advanced Dynamics” option: up to ~ 60 m.
Accuracy / resolution	Typically ±2 mm.
Temperature & Pressure	Process temperatures: from ~ -196 °C up to +200 °C. Pressures: vacuum up to ~ +25 bar.
Operating Frequency	~ 26 GHz (K-band).
Certifications / Hygiene / Safety	- Hygiene standards: ASME BPE, USP Class VI, 3-A, EHEDG approvals. - Safety / explosion protection certifications. - SIL (safety integrity) relevant features. - Overfill prevention (WHG) etc.
Special features / Utilities	<ul><li>Multi-Echo Tracking: helps with interference (echoes from internal obstructions, lids, agitators, weld seams etc.) so that the correct “surface echo” is selected. HistoROM: for data backup of settings and diagnostics. Heartbeat Technology: remote diagnostics / verification without interrupting measurement. Various communication protocols: HART, PROFIBUS PA, FOUNDATION Fieldbus; possibly wireless/Bluetooth options for configuration.

Strengths & Advantages

Non-contact: No sensor submerged; less affected by buildup, corrosion, fouling. Better hygiene, especially important in food / pharma / biotech.
Wide range and robust under harsh conditions: High temperature, pressure, aggressive chemicals tolerated.
High accuracy even over long distances.
Good for changing media: Changes in dielectric constant, presence of vapors/gas above the liquid, changing surface conditions (ripple, foam) are better handled than many other sensors.
Diagnostics & maintenance features: Helps in predictive maintenance; less downtime.
Compliant with regulatory / safety / hygienic standards: Important for regulated industries.

Limitations & Things to Consider

Cost: More expensive than simple contact or ultrasonic level sensors.
Installation constraints: Antenna needs to have a clear “field of view”; avoid obstructions (agitators, pipes, nozzles); mounting height and position matters.
Gas/vapor layers: Large layers of gas or vapor (especially under pressure) can slow propagation and introduce error unless compensated. FMR51 has correction or compensation features.
Surface conditions: Very turbulent, foamy, or very low reflectivity surfaces make echo detection harder.
Dielectric constants: If medium has very low dielectric constant (εr), reflections are weaker; need good antenna design and signal processing.
Maintenance of “flush mounting / PTFE sealing”: Over time seals/antennas may need inspection, cleaning to ensure proper functioning.

Typical Applications

Level measurement in chemical plants handling corrosive liquids.
Food & beverage / biotech plants where hygiene is critical (dairy, breweries, pharmaceutical tanks).
Storage tanks for aggressive chemicals.
Slurries, pastes where contact sensors would degrade.
Large tanks with long range requirements.

Company Details

Bronze Gleitlager

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Business Type:

Manufacturer 
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Year Established:

2003 
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Total Annual:

3000000-5000000
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Employee Number:

101~200 
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Ecer Certification：

Verified Supplier 

Xi'an Xiyi Central Control Technology Co., Ltd. is an enterprise engaged in the production, sales and R & D of industrial automation instruments. The company is located in the ancient city of Xi'an, a prosperous international city in China. The company is mainly engaged in Rosemount a... Xi'an Xiyi Central Control Technology Co., Ltd. is an enterprise engaged in the production, sales and R & D of industrial automation instruments. The company is located in the ancient city of Xi'an, a prosperous international city in China. The company is mainly engaged in Rosemount a...

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Xi'an Xiyi Central Control Technology Co., Ltd.
Room 2204, Unit 1, No. 91, Taoyuan South Road, Xi'an, Shaanxi, China
https://www.industrial-pressuretransmitters.com/

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