Endress+Hauser Micropilot FMR20 Technical Information
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Endress+Hauser Micropilot FMR20 Technical Information

Level measurement for bulk solids
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TI01597F/00/EN/02.21
71535198
2021-08-30
Products
Technical Information
Micropilot FMR20
Modbus RS485
Free space radar
For bulk solids
Level measurement for bulk solids
Application
• Ingress protection: IP66/68 / NEMA 4X/6P
• Maximum measuring range up to 10 m (32.8 ft)
• Process temperature: –40 to 80 °C (–40 to 176 °F)
• Accuracy: up to ± 5 mm (0.2 in)
Your benefits
• Level measurement for solids
• Simple, safe and secure wireless remote access – ideal for installation in places
difficult to reach
• Commissioning, operation and maintenance via free iOS / Android app SmartBlue
– saves time and reduces costs
• Hermetically sealed wiring and fully potted electronics – eliminate dust ingress and
allow operation under harsh environmental conditions
Solutions
Services

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Summary of Contents for Endress+Hauser Micropilot FMR20

  • Page 1 Products Solutions Services TI01597F/00/EN/02.21 71535198 2021-08-30 Technical Information Micropilot FMR20 Modbus RS485 Free space radar For bulk solids Level measurement for bulk solids Application • Ingress protection: IP66/68 / NEMA 4X/6P • Maximum measuring range up to 10 m (32.8 ft) •...

  • Page 2: Table Of Contents

    Micropilot FMR20 Modbus RS485 Table of contents Important document information ....3 Storage temperature ......

  • Page 3: Important Document Information

    Micropilot FMR20 Modbus RS485 Important document information Symbols used Symbols for certain types of information and graphics  Permitted Procedures, processes or actions that are permitted  Forbidden Procedures, processes or actions that are forbidden  Tip Indicates additional information Reference to documentation...

  • Page 4: Terms And Abbreviations

    Micropilot FMR20 Modbus RS485 Terms and abbreviations Document type "Operating Instructions" Document type "Brief Operating Instructions" Document type "Technical Information" Document type "Special Documentation" Document type "Safety Instructions" Nominal pressure MWP (Maximum working pressure/max. process pressure) The MWP can also be found on the nameplate.

  • Page 5: Product Life Cycle

    Micropilot FMR20 Modbus RS485 Product life cycle Engineering • Proven radar measuring technology • Wide range of installation possibilities and accessories • Highest degree of ingress protection • 2D/3D drawings • Spec Sheet Producer • Applicator selection tool for selecting the perfect measurement solution Device not compatible with transmitters and sensors that use ultrasonic measurement technology (e.g.

  • Page 6: Measuring Principle

    Micropilot FMR20 Modbus RS485 Measuring principle The Micropilot is a "downward-looking" measuring system that functions according to the time-of- flight (ToF) method. It measures the distance from the reference point R to the product surface. Radar impulses are emitted by an antenna, reflected off the product surface and received again by the radar system.

  • Page 7: Operating Frequency

    • Formation of buildup, particularly of moist products. For dielectric constants (DC values) of many media commonly used in various industries refer • the Endress+Hauser DC manual (CP01076F) • the Endress+Hauser "DC Values App" (available for Android and iOS) Operating frequency K-band (~ 26 GHz)

  • Page 8: Protocol-Specific Data, Modbus

    Micropilot FMR20 Modbus RS485 Pre-programmed linearization curves • Cylindrical tank • Spherical tank • Tank with pyramid bottom • Tank with conical bottom • Tank with flat bottom Other linearization tables of up to 32 value pairs can be entered manually.

  • Page 9: Electrical Connection

    Potential equalization No special measures for potential equalization are required. Various power supply units can be ordered as an accessory from Endress+Hauser. Power consumption Data with supply voltage 24 V Maximum input power: 100 mW...
  • Page 10 Micropilot FMR20 Modbus RS485 Single shot mode switched on/off via RTU (mW) A0038152  3 Power consumption of single shot mode switched on/off via RTU Start-up Measurement Power save mode Switch on power supply Switch off power supply Single shot mode switched on permanently...

  • Page 11: Starting Time

    Micropilot FMR20 Modbus RS485 Continuous measuring mode switched on/off via RTU (mW) A0038153  5 Power consumption of continuous measuring mode switched on/off via RTU Start-up Measurement Switch on power supply Switch off power supply Calculation example Assumed configuration • RTU: E+H FXA30B with battery (7.2 V, 14.5 Ah) •...
  • Page 12 Micropilot FMR20 Modbus RS485 DO / A(+) D1 / B(-) A0037751  6 Block circuit diagram for Modbus RS485 connection Device with Modbus communication Modbus master/RTU Power supply Up to 32 users can be connected on the RS485 bus. DO / A(+)

  • Page 13: Cable Specification

    Micropilot FMR20 Modbus RS485 Cable specification Unshielded cable, wire cross-section 0.22 mm • UV- and weather-resistant • Flame resistance according to IEC 60332-1-2 As per IEC/EN 60079-11 section 10.9, the cable is designed for a tensile strength of 30 N (6.74 lbf) (over a period of 1 h).

  • Page 14: Response Time

    Micropilot FMR20 Modbus RS485 Response time The response time can be configured. The following step response times apply (in accordance with DIN EN 61298-2) when damping is switched off: Tank height <10 m (32.8 ft) Sampling rate Response time <3 s...
  • Page 15 Micropilot FMR20 Modbus RS485 Position for installation on a vessel A0045323  11 Installation position on a vessel • If possible install the sensor so that its lower edge is inside the vessel. • Recommended distance A wall - nozzle outer edge: ~ ¹⁄₆ of the vessel diameter. Under no circumstances should the device be mounted closer than 15 cm (5.91 in) to the vessel wall.
  • Page 16 Micropilot FMR20 Modbus RS485 The maximum nozzle length L depends on the nozzle diameter D. Please note the limits for the diameter and length of the nozzle. 80 mm (3 in) antenna, installation inside nozzle • D: min. 120 mm (4.72 in) •...
  • Page 17 Micropilot FMR20 Modbus RS485 A0045325  14 Aligning the sensor with the product cone Installation with adjustable flange seal Installation with FAU40 alignment unit To avoid disturbance echoes, use metal plates installed at an angle (where necessary) Beam angle α...
  • Page 18 • Please ensure there are no interfering installations made of a conductive material in the signal beam (see the beam angle section for information on calculating the beamwidth diameter). For more information: contact the Endress+Hauser sales organization. Weather protection cover A weather protection cover is recommended for outdoor use.
  • Page 19 Micropilot FMR20 Modbus RS485 A0046286  17 Weather protection cover The sensor is not completely covered by the weather protection cover. Free-field measurement with flooding protection tube In free-field installations and/or in applications where there is a risk of flooding, the flooding protection tube must be used.
  • Page 20 Micropilot FMR20 Modbus RS485 Installation with mounting bracket, adjustable The mounting bracket can be ordered as an accessory or together with the device via the product structure "Accessory enclosed". A0046287  19 Installation with mounting bracket, adjustable • Wall or ceiling installation is possible.
  • Page 21 An angle of inclination of up to 15 ° in all directions can be set for the antenna axis using the FAU40 alignment unit. The alignment unit is used to optimally direct the radar beam at the bulk solids. The FAU40 alignment unit is available as an accessory. 15° 15° A0045332  23 Micropilot FMR20 with alignment unit Endress+Hauser...

  • Page 22: Environment

    "Accessory enclosed". 8° 8° A0045331  24 Micropilot FMR20 with adjustable flange seal Environment Ambient temperature range Measuring device: –40 to +80 °C (–40 to +176 °F) It may not be possible to use the Bluetooth connection at ambient temperatures >...

  • Page 23: Process

    ≥ 2 • Contact Endress+Hauser for lower ε values For dielectric constants (DC values) of many media commonly used in various industries refer • the Endress+Hauser DC manual (CP01076F) • the Endress+Hauser "DC Values App" (available for Android and iOS) Endress+Hauser...

  • Page 24: Mechanical Construction

    Micropilot FMR20 Modbus RS485 Mechanical construction Dimensions 80 mm (3 in)Antenna ø75 (2.95) G 1" NPT 1" ø115 (4.53) A0028807  26 Dimensions of 80 mm (3 in) antenna; engineering unit: mm (in) Cable gland FNPT ½“ conduit Endress+Hauser...
  • Page 25 Micropilot FMR20 Modbus RS485 80 mm (3 in) antenna with flooding protection tube ø75 (2.95) G 1" NPT 1" 98,2 (3.87) 138,1 (5.44) A0031095  27 Dimensions of 80 mm (3 in) antenna mounted with flooding protection tube, engineering unit: mm (in) Cable gland FNPT ½“...
  • Page 26 Micropilot FMR20 Modbus RS485 80 mm (3 in) antenna with slip-on flange 3"/DN80 ø75 (2.95) ø21 (0.83) ø115.6 (4.55) ø156.2 (6.15) ø200 (7.87) A0028813  28 Dimensions of 80 mm (3 in) antenna with slip-on flange 3"/DN80, engineering unit: mm (in) The slip-on flange 3"/DN80, PVDF, can be ordered together with the device via the product structure...

  • Page 27: Weight

    Micropilot FMR20 Modbus RS485 80 mm (3 in) antenna with slip-on flange 6"/DN150 ø143 (5.63) ø98 (3.86) ø240 (9.45) ø241.3 (9.5) ø285 (11.2) A0028818  30 Dimensions of 80 mm (3 in) antenna with slip-on flange 6"/DN150, engineering unit: mm (in) The slip-on flange 6"/DN150, PVDF, can be ordered together with the device via the product...

  • Page 28: Materials

    Micropilot FMR20 Modbus RS485 Materials A0046292  32 Overview of materials 80 mm (3 in) antenna Sensor housing; PVDF Seal; EPDM Process connection, rear side; PVDF Cable gland; PA Conduit adapter; CuZn nickel-plated O-ring; EPDM Counter nut; PA6.6 Design ring; PBT-PC Process connection, front side;...

  • Page 29: Remote Operation Via Modbus Protocol

    Micropilot FMR20 Modbus RS485 Remote operation via Modbus protocol A0046459  34 Options for remote operation via Modbus protocol Computer with Modbus operating tool (customer application, terminal application, etc.) Remote Transmit Unit (RTU) with Modbus (e.g. Fieldgate FXA42) Memograph M RSG45...

  • Page 30: Certificates And Approvals

    CE mark in the corresponding EU Declaration of Conformity along with the standards applied. Endress+Hauser confirms successful testing of the device by affixing to it the CE mark. The measuring system complies with the substance restrictions of the Restriction on Hazardous RoHS Substances Directive 2011/65/EU (RoHS 2).

  • Page 31: Fcc / Industry Canada

    Micropilot FMR20 Modbus RS485 Please note the following for operation of the devices outside of closed vessels: The device must be mounted in accordance with the instructions in the "Installation" section. Installation must be carried out by properly trained, expert staff.

  • Page 32: Mexico

    Micropilot FMR20 Modbus RS485 [Any] Changes or modifications made to this equipment not expressly approved by Endress+Hauser may void the FCC authorization to operate this equipment. This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules.

  • Page 33: Other Standards And Guidelines

    • Depending on the device: Direct input of measuring point-specific information such as measuring range or operating language • Automatic verification of exclusion criteria • Automatic creation of the order code and its breakdown in PDF or Excel output format • Ability to order directly in the Endress+Hauser Online Shop Endress+Hauser...

  • Page 34: Accessories

    Micropilot FMR20 Modbus RS485 Accessories Device-specific accessories Weather protection cover The weather protection cover can be ordered together with the device via the product structure "Accessory enclosed". Ø 98 (3.86) A0046295  35 Dimensions of weather protection cover, engineering unit: mm (in)
  • Page 35 Micropilot FMR20 Modbus RS485 Flooding protection tube 80 mm (3 in) Suitable for use with devices with a 80 mm (3 in) antenna and "Mounting customer side w/o flange" process connection. The flooding protection tube can be ordered together with the device via the product structure "Accessory enclosed".
  • Page 36 Micropilot FMR20 Modbus RS485 Mounting bracket, adjustable The mounting bracket can be ordered together with the device via the product structure "Accessory enclosed". 92.5 (3.64) 70 (2.76) 12 (0.47) 9 (0.35) A0046296  37 Dimensions of mounting bracket, engineering unit: mm (in) Consists of: •...
  • Page 37 Micropilot FMR20 Modbus RS485 UNI flange 3"/DN80/80, PP The UNI flange 3"/DN80/80 can be ordered together with the device via the product structure "Accessory enclosed". 150 (5.91) 160 (6.3) 200 (7.87) A0037947  38 Dimensions of UNI flange 3"/DN80/80, engineering unit: mm (in) Sensor connection in accordance with product structure "Process connection on rear"...
  • Page 38 Micropilot FMR20 Modbus RS485 UNI flange 4"/DN100/100, PP The UNI flange 4"/DN100/100 can be ordered together with the device via the product structure "Accessory enclosed". 175 (6.89) 190.5 (7.5) 228.6 (9.0) A0037948  39 Dimensions of UNI flange 4"/DN100/100, engineering unit: mm (in) Sensor connection in accordance with product structure "Process connection on rear"...
  • Page 39 Micropilot FMR20 Modbus RS485 Cantilever, pivotable Sensor installation A0045347  40 Installation type sensor process connection rear side Installation with cantilever and wall bracket Installation with cantilever and mounting frame Cantilever Wall bracket Mounting frame Cantilever arm 500 mm, for G 1" or MNPT 1" connections on rear 585 (23) 35 (1.4)
  • Page 40 Micropilot FMR20 Modbus RS485 Cantilever arm 1 000 mm, for G 1" or MNPT 1" connections on rear 1085 (42.7) 35 (1.4) 300 (11.8) 75 (2.9) 75 (2.9) 100 (3.9) 750 (29.5) 35 (1.4) A0037807  42 Dimensions. Unit of measurement mm (in) Weight: 5.4 kg (11.91 lb)
  • Page 41 Micropilot FMR20 Modbus RS485 Weight: 4.0 kg (8.82 lb) Material 316L (1.4404) Order number 71452327 Frame, 1 400 mm (55.1 in) 3.2 (0.13) 60 (2.36) ø33.7 (1.3) 4 (0.16) 20 (0.8) 55 (2.17) 109 (4.29) (3.94) 130 (5.12) 150 (5.91) A0037800 ...
  • Page 42 Micropilot FMR20 Modbus RS485 Weight 1.21 kg (2.67 lb) Material 316L (1.4404) Order number 71452323 Endress+Hauser...
  • Page 43 Micropilot FMR20 Modbus RS485 Ceiling mounting bracket The ceiling mounting bracket can be ordered together with the device via the product structure "Accessory enclosed". 185 (7.28) 105 (4.13) 10 (0.39) (0.47) (0.22) 5 (0.2) ø35 15 (0.59) (1.38) 155 (6.1) A0028891 ...
  • Page 44 Micropilot FMR20 Modbus RS485 Pivotable mounting bracket The mounting bracket can be ordered together with the device via the product structure "Accessory enclosed". 100 (3.94) 6.8 (0.27) 177 (6.97) 358 (14.1) A0038143  47 Dimensions of pivotable mounting bracket. Unit of measurement mm (in) Material 316L (1.4404)
  • Page 45 Micropilot FMR20 Modbus RS485 Horizontal mounting bracket The horizontal mounting bracket is used to install the device in confined spaces. The mounting bracket can be ordered together with the device via the product structure "Accessory enclosed". 280 (11) Ø34 (1.34) 9 (0.35)
  • Page 46 Micropilot FMR20 Modbus RS485 FAU40 alignment unit The alignment unit is used to optimally align the sensor with the bulk solids. 15° 15° (0.39) <360 NPT ¾ (14.2) NPT 1 70 (2.76) 500 (19.7) (1.18) (0.8) 19 (0.75) A0045330  49 Dimensions.
  • Page 47 Micropilot FMR20 Modbus RS485 Adjustable flange seal The adjustable flange seal is used to align the FMR20 The adjustable flange seal can be ordered together with the device via the product structure "Accessory enclosed". ød øD A0045324  50 Dimensions...

  • Page 48: Service-Specific Accessories

    For an overview of the scope of the associated Technical Documentation, refer to the following: • W@M Device Viewer (www.endress.com/deviceviewer): Enter the serial number from nameplate • Endress+Hauser Operations App: Enter the serial number from the nameplate or scan the 2D matrix code (QR code) on the nameplate Brief Operating Instructions...

  • Page 49: Registered Trademarks

    Android, Google Play and the Google Play logo are trademarks of Google Inc. Bluetooth® The Bluetooth® word mark and logos are registered trademarks owned by the Bluetooth SIG, Inc. and any use of such marks by Endress+Hauser is under license. Other trademarks and trade names are those of their respective owners. Endress+Hauser...
  • Page 52 *71535198* 71535198 www.addresses.endress.com...

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