Endress+Hauser FMR51 Operating Manual

BA01049F/00/EN/07.18

71394698

2018-04-12

01.02.zz (Device firmware)

Products	Solutions	Services

Operating Instructions

Micropilot FMR51, FMR52

HART

Free space radar

Micropilot FMR51, FMR52 HART

ORDER CODE:

XXXXX-XXXXXX

1.

SER. NO.:

XXXXXXXXXXXX

EXT. ORD. CD.:

XXX.XXXX.XX

Serial number

2.

www.endress.com/deviceviewer

Endress+Hauser

Operations App

3.

A0023555

2	Endress+Hauser

Micropilot FMR51, FMR52 HART	Table of contents

Table of contents

1Wichtige Hinweise zum

Dokument . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.1	Document function . . . . . . . . . . . . . . . . . . . . .		5
1.2	Symbols	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	5
	1.2.1	Safety symbols . . . . . . . . . . . . . . . . . .	5
	1.2.2	Electrical symbols . . . . . . . . . . . . . . . .	5
	1.2.3	Tool symbols . . . . . . . . . . . . . . . . . . . .	5
	1.2.4	Symbols for
		certain types of information . . . . . . . . .	6
	1.2.5	Symbols in graphics . . . . . . . . . . . . . . .	6
	1.2.6 Symbols at the device . . . . . . . . . . . . .		7
1.3	Additional documentation . . . . . . . . . . . . . . . .		7
1.4	Terms and abbreviations . . . . . . . . . . . . . . . . .		8
1.5	Registered trademarks . . . . . . . . . . . . . . . . . . .		9

2	Basic safety instructions . . . . . . . . . . .		10
2.1	Requirements for the personnel . . . . . . . . . . .		10
2.2	Designated use . . . . . . . . . . . . . . . . . . . . . . .		10
2.3	Workplace safety . . . . . . . . . . . . . . . . . . . . . .		11
2.4	Operational safety . . . . . . . . . . . . . . . . . . . . .		11
2.5	Product safety . . . . . . . . . . . . . . . . . . . . . . . .		11
	2.5.1	CE mark . . . . . . . . . . . . . . . . . . . . . .	11
	2.5.2	EAC conformity . . . . . . . . . . . . . . . . .	12
2.6	Safety Instructions (XA) . . . . . . . . . . . . . . . . .		12

3	Product description . . . . . . . . . . . . . . . .		15
3.1	Product design . . . . . . . . . . . . . . . . . . . . . . . .		15
	3.1.1	Micropilot FMR51 . . . . . . . . . . . . . . .	15
	3.1.2	Micropilot FMR52 . . . . . . . . . . . . . . .	15
	3.1.3	Electronics housing . . . . . . . . . . . . . .	16

4Incoming acceptance and product

	identification . . . . . . . . . . . . . . . . . . . . .	17
4.1	Incoming acceptance . . . . . . . . . . . . . . . . . . .	17
4.2	Product identification . . . . . . . . . . . . . . . . . .	17
	4.2.1 Nameplate . . . . . . . . . . . . . . . . . . . .	18

5	Storage, Transport . . . . . . . . . . . . . . . .		19
5.1	Storage conditions . . . . . . . . . . . . . . . . . . . . .		19
5.2	Transport product to the measuring point . . . .		19
6	Installation . . . . . . . . . . . . . . . . . . . . . . .		20
6.1	Installation conditions . . . . . . . . . . . . . . . . . .		20
	6.1.1	Mounting position . . . . . . . . . . . . . . .	20
	6.1.2	Vessel installations . . . . . . . . . . . . . .	21
	6.1.3 Reduction of interference echoes . . . .		21
	6.1.4 Measurement in a plastic vessel . . . . .		22
	6.1.5	Optimization options . . . . . . . . . . . . .	22
	6.1.6	Beam angle . . . . . . . . . . . . . . . . . . . .	23
6.2	Measuring conditions . . . . . . . . . . . . . . . . . .		24
6.3	Mounting cladded flanges . . . . . . . . . . . . . . .		25

Endress+Hauser

6.4	Installation in vessel (free space) . . . . . . . . . .		26
	6.4.1	Horn antenna (FMR51) . . . . . . . . . . .	26
	6.4.2 Measurement from the outside
		through plastic walls (FMR50/
		FMR51) . . . . . . . . . . . . . . . . . . . . . .	28
	6.4.3 Horn antenna, flush mount
		(FMR52) . . . . . . . . . . . . . . . . . . . . . .	29
6.5	Installation in stilling well . . . . . . . . . . . . . . .		30
	6.5.1 Recommendations for the stilling
		well . . . . . . . . . . . . . . . . . . . . . . . . .	30
	6.5.2 Examples for the construction of
		stilling wells . . . . . . . . . . . . . . . . . . .	31
6.6	Installation in bypass . . . . . . . . . . . . . . . . . . .		32
	6.6.1 Recommendations for the bypass
		pipe . . . . . . . . . . . . . . . . . . . . . . . . .	32
	6.6.2 Example for the construction of a
		bypass . . . . . . . . . . . . . . . . . . . . . . .	33
6.7	Container with heat insulation . . . . . . . . . . . .		34
6.8	Turning the transmitter housing . . . . . . . . . .		34
6.9	Turning the display . . . . . . . . . . . . . . . . . . . .		35
	6.9.1	Opening cover . . . . . . . . . . . . . . . . . .	35
	6.9.2 Turning the display module . . . . . . . .		35
	6.9.3	Closing electronics compartment
		cover . . . . . . . . . . . . . . . . . . . . . . . .	36
6.10	Post-installation check . . . . . . . . . . . . . . . . . .		36

7	Electrical connection . . . . . . . . . . . . . .		37
7.1	Connection conditions . . . . . . . . . . . . . . . . . .		37
	7.1.1	Terminal assignment . . . . . . . . . . . .	37
	7.1.2	Cable specification . . . . . . . . . . . . . . .	43
	7.1.3	Device plug connectors . . . . . . . . . . .	44
	7.1.4	Supply voltage . . . . . . . . . . . . . . . . . .	45
	7.1.5	Overvoltage protection . . . . . . . . . . .	47
7.2	Connecting the measuring device . . . . . . . . . .		47
	7.2.1	Opening connection compartment
		cover . . . . . . . . . . . . . . . . . . . . . . . .	48
	7.2.2	Connecting . . . . . . . . . . . . . . . . . . . .	48
	7.2.3	Plug-in spring-force terminals . . . . . .	49
	7.2.4	Closing connection compartment
		cover . . . . . . . . . . . . . . . . . . . . . . . .	49
7.3	Post-connection check . . . . . . . . . . . . . . . . . .		50

8	Operation options . . . . . . . . . . . . . . . . .		51
8.1	Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . .		51
	8.1.1	Local operation . . . . . . . . . . . . . . . . .	51
	8.1.2	Operation with remote display and

operating module FHX50 . . . . . . . . . . 52

8.1.3Operation via Bluetooth® wireless

technology . . . . . . . . . . . . . . . . . . . . 53 8.1.4 Remote operation . . . . . . . . . . . . . . . 54

8.2Structure and function of the operating

menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 8.2.1 Structure of the operating menu . . . . 55

3

	Table of contents				Micropilot FMR51, FMR52 HART
	8.2.2 User roles and related access				13.6.2 Filtering the event logbook . . . . . . . .	93
		authorization . . . . . . . . . . . . . . . . . .	57		13.6.3 Overview of information events . . . . .	93
	8.2.3	Data access - Security . . . . . . . . . . . .	57	13.7	Firmware history . . . . . . . . . . . . . . . . . . . . . .	94
	8.3 Display and operating module . . . . . . . . . . . .		62
	8.3.1	Display appearance . . . . . . . . . . . . . .	62	14	Maintenance . . . . . . . . . . . . . . . . . . . . . .	95
	8.3.2	Operating elements . . . . . . . . . . . . . .	65	14.1	Exterior cleaning	95
	8.3.3 Entering numbers and text		66
				14.2	Replacing seals	95
	8.3.4 Opening the context menu		68

8.3.5Envelope curve on the display and

			operating module . . . . . . . . . . . . . . .	69	15	Repairs . . . . . . . . . . . . . . . . . . . . . . . . . . .		96
	9	System integration via HART			15.1	General information on repairs . . . . . . . . . . .		. 96
						15.1.1	Repair concept . . . . . . . . . . . . . . . . .	96
		protocol . . . . . . . . . . . . . . . . . . . . . . . . . .		70		15.1.2 Repairs to Ex-approved devices . . . . .		96
	9.1	Overview of the Device Description files				15.1.3 Replacement of an electronics
							module . . . . . . . . . . . . . . . . . . . . . . .	96
		(DD) . .	. . . . . . . . . . . . . . . . . . . . . . . . . . . . .	70		15.1.4 Replacement of a device . . . . . . . . . .		96
	9.2	Measured values via HART protocol . . . . . . . .		70	15.2	Spare parts . . . . . . . . . . . . . . . . . . . . . . . . . .		97
	10	Commissioning via SmartBlue			15.3	Return .	. . . . . . . . . . . . . . . . . . . . . . . . . . . .	. 97
					15.4	Disposal	. . . . . . . . . . . . . . . . . . . . . . . . . . . .	97
		(app) .	. . . . . . . . . . . . . . . . . . . . . . . . . . . .	71	16	Accessories		98
	10.1	Requirements		71
					16.1	Device-specific accessories		98
	10.2	Commissioning . . . . . . . . . . . . . . . . . . . . . . .		71
						16.1.1	Weather protection cover . . . . . . . . .	98
	11	Commissioning via wizard		75		16.1.2	Remote display FHX50 . . . . . . . . . . .	99
						16.1.3 Horn protection for horn antenna		100
	12	Commissioning via operating				16.1.4 Horn protection for horn antenna
							with variable antenna extension . . .	101
		menu .	. . . . . . . . . . . . . . . . . . . . . . . . . . . .	76		16.1.5	Overvoltage protection . . . . . . . . . .	102
	12.1	Installation and function check		76		16.1.6	Gas-tight feedthrough . . . . . . . . . . .	102
						16.1.7 Bluetooth module for HART devices		103
	12.2	Setting the operating language . . . . . . . . . . . .		76	16.2	Communication-specific accessories . . . . . . .		104
	12.3	Configuration of a level measurement . . . . . .		77	16.3	Service-specific accessories . . . . . . . . . . . . . .		105
	12.4	Recording the reference curve . . . . . . . . . . . .		79	16.4	System components . . . . . . . . . . . . . . . . . . .		106
	12.5	Configuration of the on-site display . . . . . . . .		80
		12.5.1 Factory settings of the on-site			17	Operating menu		107
			display	80
					17.1	Overview of the operating menu
		12.5.2 Adjustment of the on-site display . . .		80
	12.6	Configuration of the current outputs . . . . . . . .		80		(SmartBlue) . . . . . . . . . . . . . . . . . . . . . . . . .		107
		12.6.1 Factory setting of the current			17.2	Overview of the operating menu (display
			outputs . . . . . . . . . . . . . . . . . . . . . . .	80		module)	. . . . . . . . . . . . . . . . . . . . . . . . . . .	112
		12.6.2 Adjustment of the current outputs . . .		80	17.3	Overview of the operating menu (operating
	12.7	Configuration management . . . . . . . . . . . . . .		81		tool) . . .	. . . . . . . . . . . . . . . . . . . . . . . . . . .	119
	12.8	Protection of the settings against			17.4	"Setup" menu . . . . . . . . . . . . . . . . . . . . . . . .		125
		unauthorized changes . . . . . . . . . . . . . . . . . .		82		17.4.1	"Mapping" wizard . . . . . . . . . . . . . . .	133
						17.4.2	"Advanced setup" submenu . . . . . . . .	135
	13	Diagnostics and troubleshooting . . .		83	17.5	"Diagnostics" menu . . . . . . . . . . . . . . . . . . . .		180
	13.1	General trouble shooting		83		17.5.1	"Diagnostic list" submenu . . . . . . . . .	182
						17.5.2	"Event logbook" submenu . . . . . . . . .	183
		13.1.1	General errors . . . . . . . . . . . . . . . . . .	83		17.5.3	"Device information" submenu . . . . .	184
		13.1.2	Error - SmartBlue operation . . . . . . . .	84		17.5.4	"Measured values" submenu . . . . . . .	187
		13.1.3	Parametrization errors . . . . . . . . . . .	84		17.5.5	"Data logging" submenu . . . . . . . . . .	189
	13.2	Diagnostic information on local display . . . . . .		86		17.5.6	"Simulation" submenu . . . . . . . . . . .	192
		13.2.1	Diagnostic message . . . . . . . . . . . . . .	86		17.5.7	"Device check" submenu . . . . . . . . . .	197
	13.3	13.2.2 Calling up remedial measures . . . . . .		88		17.5.8	"Heartbeat" submenu . . . . . . . . . . . .	199
		Diagnostic event in the operating tool . . . . . . .		89
	13.4	Diagnostic list . . . . . . . . . . . . . . . . . . . . . . . .		90	Index			200
	13.5	Overview of diagnostic events		91			. . . . . . . . . . . . . . . . . . . . . . . . . . .
	13.6	Event logbook . . . . . . . . . . . . . . . . . . . . . . . .		92
		13.6.1	Event history . . . . . . . . . . . . . . . . . . .	92
	4						Endress+Hauser

Micropilot FMR51, FMR52 HART	Wichtige Hinweise zum Dokument

1Wichtige Hinweise zum Dokument

1.1Document function

These Operating Instructions contain all the information that is required in various phases of the life cycle of the device: from product identification, incoming acceptance and storage, to mounting, connection, operation and commissioning through to troubleshooting, maintenance and disposal.

1.2Symbols

1.2.1Safety symbols

Symbol Meaning

DANGER!

DANGER This symbol alerts you to a dangerous situation. Failure to avoid this situation will result in serious or fatal injury.

WARNING!

WARNING This symbol alerts you to a dangerous situation. Failure to avoid this situation can result in serious or fatal injury.

CAUTION!

CAUTION This symbol alerts you to a dangerous situation. Failure to avoid this situation can result in minor or medium injury.

NOTE!

NOTICE This symbol contains information on procedures and other facts which do not result in personal injury.

1.2.2Electrical symbols

Symbol Meaning

Direct current

Alternating current

Direct current and alternating current

Ground connection

A grounded terminal which, as far as the operator is concerned, is grounded via a grounding system.

Protective Earth (PE)

A terminal which must be connected to ground prior to establishing any other connections.

The ground terminals are situated inside and outside the device:

•Inner ground terminal: Connects the protectiv earth to the mains supply.

•Outer ground terminal: Connects the device to the plant grounding system.

1.2.3Tool symbols

Symbol Meaning

Torx screwdriver

A0013442

Flat blade screwdriver

A0011220

Endress+Hauser

5

Wichtige Hinweise zum Dokument	Micropilot FMR51, FMR52 HART
Symbol	Meaning
	Cross-head screwdriver
A0011219
	Allen key

A0011221

Hexagon wrench

A0011222

1.2.4Symbols for certain types of information

	Symbol						Meaning
							Permitted
							Procedures, processes or actions that are permitted.
							Preferred
							Procedures, processes or actions that are preferred.
							Forbidden
							Procedures, processes or actions that are forbidden.
							Tip
							Indicates additional information.
							Reference to documentation.
			A				Reference to page.
							Reference to graphic.
							Notice or individual step to be observed.
		,		,		…	Series of steps.
	1.		2.		3.
							Result of a step.
							Help in the event of a problem.
							Visual inspection.

1.2.5Symbols in graphics

	Symbol						Meaning
1, 2, 3 ...							Item numbers
		,		,		…	Series of steps
	1.		2.		3.
	A, B, C, ...						Views
A-A, B-B, C-C, ...							Sections
-							Hazardous area
							Indicates a hazardous area.
.							Safe area (non-hazardous area)
							Indicates the non-hazardous area.

6	Endress+Hauser

Micropilot FMR51, FMR52 HART	Wichtige Hinweise zum Dokument

1.2.6Symbols at the device

Symbol Meaning

Safety instructions

Observe the safety instructions contained in the associated Operating Instructions.

Temperature resistance of the connection cables

Specifies the minimum value of the temperature resistance of the connection cables.

1.3Additional documentation

Document	Purpose and content of the document
Technical Information	Planning aid for your device
TI01040F (FMR51, FMR52)	The document contains all the technical data on the device and provides
	an overview of the accessories and other products that can be ordered for
	the device.
Brief Operating Instructions	Guide that takes you quickly to the 1st measured value
KA01100F (FMR51/FMR52,	The Brief Operating Instructions contain all the essential information
HART)	from incoming acceptance to initial commissioning.
Description of Device Parameters	Reference for your parameters
GP01014F (FMR5x, HART)	The document provides a detailed explanation of each individual
	parameter in the operating menu. The description is aimed at those who
	work with the device over the entire life cycle and perform specific
	configurations.
Special documentation	Functional Safety Manual
SD01087F	The document is part of the Operating Instructions and serves as a
	reference for application-specific parameters and notes.
Special documentation	Manual for Heartbeat Verification and Heartbeat Monitoring
SD01870F	The document contains descriptions of the additonal parameters and
	technical data which are available with the Heartbeat Verification and
	Heartbeat Monitoring application packages.

For an overview of the scope of the associated Technical Documentation, refer to the following:

•The W@M Device Viewer : Enter the serial number from the nameplate (www.endress.com/deviceviewer)

•The Endress+Hauser Operations App: Enter the serial number from the nameplate or scan the 2-D matrix code (QR code) on the nameplate.

Endress+Hauser

7

Wichtige Hinweise zum Dokument	Micropilot FMR51, FMR52 HART

1.4Terms and abbreviations

Term/abbreviation	Explanation
BA	Document type "Operating Instructions"
KA	Document type "Brief Operating Instructions"
TI	Document type "Technical Information"
SD	Document type "Special Documentation"
XA	Document type "Safety Instructions"
PN	Nominal pressure
MWP	Maximum Working Pressure
	The MWP can also be found on the nameplate.
ToF	Time of Flight
FieldCare	Scalable software tool for device configuration and integrated plant asset management
	solutions
DeviceCare	Universal configuration software for Endress+Hauser HART, PROFIBUS,
	FOUNDATION Fieldbus and Ethernet field devices
DTM	Device Type Manager
DD	Device Description for HART communication protocol
εr (DC value)	Relative dielectric constant
Operating tool	The term "operating tool" is used in place of the following operating software:
	• FieldCare / DeviceCare, for operation via HART communication and PC
	• SmartBlue (app), for operation using an Android or iOS smartphone or tablet.
BD	Blocking Distance; no signals are analyzed within the BD.
PLC	Programmable Logic Controller
CDI	Common Data Interface
PFS	Pulse Frequence Status (Switching output)

8	Endress+Hauser

Micropilot FMR51, FMR52 HART	Wichtige Hinweise zum Dokument

1.5Registered trademarks

HART®

Registered trademark of the FieldComm Group, Austin, USA

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.

Apple®

Apple, the Apple logo, iPhone, and iPod touch are trademarks of Apple Inc., registered in the U.S.and other countries. App Store is a service mark of Apple Inc.

Android®

Android, Google Play and the Google Play logo are trademarks of Google Inc.

KALREZ®, VITON®

Registered trademark of DuPont Performance Elastomers L.L.C., Wilmington, USA

TEFLON®

Registered trademark of E.I. DuPont de Nemours & Co., Wilmington, USA

TRI CLAMP®

Registered trademark of Alfa Laval Inc., Kenosha, USA

Endress+Hauser

9

Basic safety instructions	Micropilot FMR51, FMR52 HART

2Basic safety instructions

2.1Requirements for the personnel

The personnel for installation, commissioning, diagnostics and maintenance must fulfill the following requirements:

Trained, qualified specialists must have a relevant qualification for this specific function and task.

Are authorized by the plant owner/operator.

Are familiar with federal/national regulations.

Before starting work, read and understand the instructions in the manual and supplementary documentation as well as the certificates (depending on the application).

Follow instructions and comply with basic conditions.

The operating personnel must fulfill the following requirements:

Are instructed and authorized according to the requirements of the task by the facility's owner-operator.

Follow the instructions in this manual.

2.2Designated use

Application and measured materials

The measuring device described in these Operating Instructions is intended for the continuous, contactless level measurement of liquids, pastes and sludge. The device can also be freely mounted outside closed metal vessels (e.g. above basins, open channels or open piles) because of its operating frequency of about 26 GHz, a maximum radiated pulsed power of 5.7 mW and an average power output of 0.015 mW (for the version with advanced dynamics: maximum pulse power: 23.3 mW; average power: 0.076 mW). Operation is completely harmless to humans and animals.

Observing the limit values specified in the "Technical data" and listed in the Operating Instructions and supplementary documentation, the measuring device may be used for the following measurements only:

Measured process variables: level, distance, signal strength

Calculated process variables: Volume or mass in arbitrarily shaped vessels; flow through measuring weirs or flumes (calculated from the level by the linearization functionality)

To ensure that the measuring device remains in proper condition for the operation time:

Use the measuring device only for measured materials against which the processwetted materials are adequately resistant.

Observe the limit values in "Technical data".

Incorrect use

The manufacturer is not liable for damage caused by improper or non-designated use.

Verification for borderline cases:

For special measured materials and cleaning agents, Endress+Hauser is glad to provide assistance in verifying the corrosion resistance of wetted materials, but does not accept any warranty or liability.

Residual risk

The electronics housing and its built-in components such as display module, main electronics module and I/O electronics module may heat to 80 °C (176 °F) during operation through heat transfer from the process as well as power dissipation within the electronics. During operation the sensor may assume a temperature near the temperature of the measured material.

10	Endress+Hauser

Micropilot FMR51, FMR52 HART	Basic safety instructions

Danger of burns due to heated surfaces!

For high process temperatures: Install protection against contact in order to prevent burns.

2.3Workplace safety

For work on and with the device:

Wear the required personal protective equipment according to federal/national regulations.

2.4Operational safety

Risk of injury.

Operate the device in proper technical condition and fail-safe condition only.

The operator is responsible for interference-free operation of the device.

Conversions to the device

Unauthorized modifications to the device are not permitted and can lead to unforeseeable dangers.

If, despite this, modifications are required, consult with the manufacturer.

Repair

To ensure continued operational safety and reliability,

Carry out repairs on the device only if they are expressly permitted.

Observe federal/national regulations pertaining to repair of an electrical device.

Use original spare parts and accessories from the manufacturer only.

Hazardous area

To eliminate a danger for persons or for the facility when the device is used in the hazardous area (e.g. explosion protection, pressure vessel safety):

Based on the nameplate, check whether the ordered device is permitted for the intended use in the hazardous area.

Observe the specifications in the separate supplementary documentation that is an integral part of these Instructions.

2.5Product safety

This measuring device is designed in accordance with good engineering practice to meet state-of-the-art safety requirements, has been tested, and left the factory in a condition in which it is safe to operate. It meets general safety standards and legal requirements.

NOTICE

Loss of degree of protection by opening of the device in humid environments

If the device is opened in a humid environment, the degree of protection indicated on the nameplate is no longer valid. This may also impair the safe operation of the device.

2.5.1CE mark

The measuring system meets the legal requirements of the applicable EC guidelines. These are listed in the corresponding EC Declaration of Conformity together with the standards applied.

Endress+Hauser confirms successful testing of the device by affixing to it the CE mark.

Endress+Hauser

11

Basic safety instructions	Micropilot FMR51, FMR52 HART

2.5.2EAC conformity

The measuring system meets the legal requirements of the applicable EAC guidelines. These are listed in the corresponding EAC Declaration of Conformity together with the standards applied.

Endress+Hauser confirms successful testing of the device by affixing to it the EAC mark.

2.6Safety Instructions (XA)

Depending on the approval, the following Safety Instructions (XA) are supplied with the device. They are an integral part of the Operating Instructions.

Feature	Approval	Available for		Feature 020 "Power Supply; Output"
010
			A 1)	B 2)	C 3)	E 4)/G 5)	K 6)/L 7)
BA	ATEX: II 1 G Ex ia IIC T6-T1 Ga	• FMR51	XA00677F	XA00677F	XA00677F	XA00685F	-
		• FMR52
BB	ATEX: II 1/2 G Ex ia IIC T6-T1 Ga/Gb	• FMR51	XA00677F	XA00677F	XA00677F	XA00685F	-
		• FMR52
BC	ATEX: II 1/2 G Ex d [ia] IIC T6-T1 Ga/Gb	• FMR51	XA00680F	XA00680F	XA00680F	XA00688F	XA00680F
		• FMR52
BD	ATEX: II 1/2/3 G Ex ic [ia Ga] IIC T6-T1	• FMR51	XA00678F	XA00678F	XA00678F	XA00686F	XA00678F
	Ga/Gb/Gc	• FMR52
BG	ATEX: II 3 G Ex nA IIC T6-T1 Gc	• FMR51	XA00679F	XA00679F	XA00679F	XA00687F	XA00679F
		• FMR52
BH	ATEX: II 3 G Ex ic IIC T6-T1 Gc	• FMR51	XA00679F	XA00679F	XA00679F	XA00687F	XA00679F
		• FMR52
BL	ATEX: II 1/2/3 G Ex nA [ia Ga] IIC T6-T1	• FMR51	XA00678F	XA00678F	XA00678F	XA00686F	XA00678F
	Ga/Gb/Gc	• FMR52
B2	ATEX: II 1/2 G Ex ia IIC T6-T1 Ga/Gb	• FMR51	XA00683F	XA00683F	XA00683F	XA00691F	-
	ATEX: II 1/2 D Ex ia IIIC Txx°C Da/Db	• FMR52
B3	ATEX: II 1/2 G Ex d [ia] IIC T6-T1 Ga/Gb	• FMR51	XA00684F	XA00684F	XA00684F	XA00692F	XA00684F
	ATEX: II 1/2 D Ex ta IIIC Txx°C Da/Db	• FMR52
B4	ATEX:II 1/2 G Ex ia IIC T6-T1 Ga/Gb	• FMR51	XA00681F	XA00681F	XA00681F	XA00689F	-
	ATEX: II 1/2 G Ex d [ia] IIC T6-T1 Ga/Gb	• FMR52
CD	CSA C/US DIP Cl.II,III Div.1 Gr.E-G	FMR51	XA01113F	XA01113F	XA01113F	XA01115F	XA01113F
C2	CSA C/US IS Cl.I,II,III Div.1 Gr.A-G, NI Cl.1 Div.	• FMR51	XA01112F	XA01112F	XA01112F	XA01114F	-
	2, Ex ia	• FMR52
C3	CSA C/US XP Cl.I,II,III Div.1 Gr.A-G, NI Cl.1	• FMR51	XA01113F	XA01113F	XA01113F	XA01115F	XA01113F
	Div.2, Ex d	• FMR52
FB	FM IS Cl.I,II,III Div.1 Gr.A-G, AEx ia, NI Cl.1	• FMR51	XA01116F	XA01116F	XA01116F	XA01118F	-
	Div.2	• FMR52
FD	FM XP Cl.I,II,III Div.1 Gr.A-G, AEx d, NI Cl.1	• FMR51	XA01117F	XA01117F	XA01117F	XA01119F	XA01117F
	Div.2	• FMR52
FE	FM DIP Cl.II,III Div.1 Gr.E-G	FMR51	XA01117F	XA01117F	XA01117F	XA01119F	XA01117F
IA	IECEx: Ex ia IIC T6-T1 Ga	• FMR51	XA00677F	XA00677F	XA00677F	XA00685F	-
		• FMR52
IB	IECEx: Ex ia IIC T6-T1 Ga/Gb	• FMR51	XA00677F	XA00677F	XA00677F	XA00685F	-
		• FMR52
IC	IECEx: Ex d [ia] IIC T6-T1 Ga/Gb	• FMR51	XA00680F	XA00680F	XA00680F	XA00688F	XA00680F
		• FMR52
ID	IECEx: Ex ic [ia Ga] IIC T6-T1 Ga/Gb/Gc	• FMR51	XA00678F	XA00678F	XA00678F	XA00686F	XA00678F
		• FMR52

12	Endress+Hauser

Micropilot FMR51, FMR52 HART							Basic safety instructions
Feature	Approval	Available for		Feature 020		"Power Supply; Output"
010
			A 1)	B 2)		C 3)		E 4)/G 5)	K 6)/L 7)
IG	IECEx: Ex nA IIC T6-T1 Gc	• FMR51	XA00679F	XA00679F		XA00679F		XA00687F	XA00679F
		• FMR52
IH	IECEx: Ex ic IIC T6-T1 Gc	• FMR51	XA00679F	XA00679F		XA00679F		XA00687F	XA00679F
		• FMR52
IL	IECEx: Ex nA [ia Ga] IIC T6-T1 Ga/Gb/Gc	• FMR51	XA00678F	XA00678F		XA00678F		XA00686F	XA00678F
		• FMR52
I2	IECEx: Ex ia IIC T6-T1 Ga/Gb	• FMR51	XA00683F	XA00683F		XA00683F		XA00691F	-
	IECEx: Ex ia IIIC Txx°C Da/Db	• FMR52
I3	IECEx: Ex d [ia] IIC T6-T1 Ga/Gb	• FMR51	XA00684F	XA00684F		XA00684F		XA00692F	XA00684F
	IEXEx: Ex ta IIIC Txx°C Da/Db	• FMR52
I4	IECEx: Ex ia IIC T6-T1 Ga/Gb	• FMR51	XA00681F	XA00681F		XA00681F		XA00689F	-
	IECEx: Ex d [ia] IIC T6-T1 Ga/Gb	• FMR52
JA	JPN Ex d ia IIC T4 Ga/Gb	• FMR51	XA01716F	XA01716F		-		-	-
		• FMR52
JC	JPN Ex d [ia] IIC T4 Ga/Gb	• FMR51	XA01717F	XA01717F		-		-	-
		• FMR52
JD	JPN Ex d [ia] IIC T1 Ga/Gb	FMR51	XA01717F	XA01717F		-		-	-
JE	JPN Ex d [ia] IIC T2 Ga/Gb	FMR51	XA01717F	XA01717F
JF	JPN Ex d [ia] IIC T3 Ga/Gb	FMR52	XA01717F	XA01717F		-		-	-
KA	KC Ex ia IIC T6 Ga	• FMR51	XA01045F	XA01045F		XA01045F		XA01047F	-
		• FMR52
KB	KC Ex ia IIC T6 Ga/Gb	• FMR51	XA01045F	XA01045F		XA01045F		XA01047F	-
		• FMR52
KC	KC Ex d[ia] IIC T6	• FMR51	XA01046F	XA01046F		XA01046F		XA01048F	XA01046F
		• FMR52
MA	INMETRO: Ex ia IIC T6 Ga	• FMR51	XA01286F	XA01287F		XA01288F		XA01296F	-
		• FMR52
MC	INMETRO: Ex d[ia] IIC T6 Ga/Gb	• FMR51	XA01292F	XA01292F		XA01293F		XA01298F	XA01294F
		• FMR52
MH	INMETRO: Ex ic IIC T6 Gc	• FMR51	XA01289F	XA01290F		XA01291F		XA01297F	-
		• FMR52
NA	NEPSI Ex ia IIC T6 Ga	• FMR51	XA01199F	XA01199F		XA01199F		XA01208F	-
		• FMR52
NB	NEPSI Ex ia IIC T6 Ga/Gb	• FMR51	XA01199F	XA01199F		XA01199F		XA01208F	-
		• FMR52
NC	NEPSI Ex d[ia] IIC T6 Ga/Gb	• FMR51	XA01202F	XA01202F		XA01202F		XA01211F	XA01202F
		• FMR52
NG	NEPSI Ex nA II T6 Gc	• FMR51	XA01201F	XA01201F		XA01201F		XA01210F	XA01201F
		• FMR52
NH	NEPSI Ex ic IIC T6 Gc	• FMR51	XA01201F	XA01201F		XA01201F		XA01210F	XA01201F
		• FMR52
N2	NEPSI Ex ia IIC T6 Ga/Gb, Ex iaD 20/21 T85…	• FMR51	XA01205F	XA01205F		XA01205F		XA01214F	-
	90oC	• FMR52

Endress+Hauser

13

Basic safety instructions					Micropilot FMR51, FMR52 HART
Feature	Approval	Available for		Feature 020 "Power Supply; Output"
010
			A 1)	B 2)	C 3)	E 4)/G 5)	K 6)/L 7)
N3	NEPSI Ex d[ia] IIC T6 Ga/Gb, DIP A20/21	• FMR51	XA01206F	XA01206F	XA01206F	XA01215F	XA01206F
	T85…90oC IP66	• FMR52
8A	FM/CSA IS+XP Cl.I,II,III Div.1 Gr.A-G	• FMR51	• XA01112F	• XA01112F	• XA01112F	• XA01114F	-
		• FMR52	• XA01113F	• XA01113F	• XA01113F	• XA01115F
			• XA01116F	• XA01116F	• XA01116F	• XA01118F
			• XA01117F	• XA01117F	• XA01117F	• XA01119F

1)2-wire; 4-20mA HART

2)2-wire; 4-20mA HART, switch output

3)2-wire; 4-20mA HART, 4-20mA

4)2-wire; FOUNDATION Fieldbus, switch output

5)2-wire; PROFIBUS PA, switch output

6)4-wire 90-253VAC; 4-20mA HART

7)4-wire 10.4-48VDC; 4-20mA HART

For certified devices the relevant Safety Instructions (XA) are indicated on the nameplate.

If the device is prepared for the remote display FHX50 (product structure: feature 030: Display, Operation", option L or M), the Ex marking of some certificates changes according to the following table 1):

Feature 010	Feature 030 ("Display,	Ex marking
("Approval")	Operation")
BG	L, M or N	ATEX II 3G Ex nA [ia Ga] IIC T6-T1 Gc
BH	L, M or N	ATEX II 3G Ex ic [ia Ga] IIC T6-T1 Gc
B3	L, M or N	ATEX II 1/2G Ex d [ia] IIC T6-T1 Ga/Gb,
		ATEX II 1/2D Ex ta [ia Db] IIIC Txx°C Da/Db
IG	L, M or N	IECEx Ex nA [ia Ga] IIC T6-T1 Gc
IH	L, M or N	IECEx Ex ic [ia Ga] IIC T6-T1 Gc
I3	L, M or N	IECEx Ex d [ia] IIC T6-T1 Ga/Gb,
		IECEx Ex ta [ia Db] IIIC Txx°C Da/Db
MH	L, M or N	Ex ic [ia Ga] IIC T6 Gc
NG	L, M or N	NEPSI Ex nA [ia Ga] IIC T6-T1 Gc
NH	L, M or N	NEPSI Ex ic [ia Ga] IIC T6-T1 Gc
N3	L, M or N	NEPSI Ex d [ia] IIC T6-T1 Ga/Gb, DIP A20/21 [ia D] TA,
		Txx°C IP6X

1)The marking of certificates not mentioned in this table are not affected by the FHX50.

14	Endress+Hauser

Micropilot FMR51, FMR52 HART	Product description

3Product description

3.1Product design

3.1.1Micropilot FMR51

1	1	1
2	4	5
3	3	3

A0016818

1 Design of the Micropilot FMR51 (26 GHz)

1Electronics housing

2 Process connection (Thread)

3Horn antenna

4Flange

5Antenna extension

3.1.2	Micropilot FMR52
1	1		1
2	3		5
	4	4	4
			A0016788

2 Design of the Micropilot FMR52 (26 GHz)

1Electronics housing

2 Tri-Clamp process connection

3 Dairy coupling

4 PTFE cladding

5Flange

Endress+Hauser

15

Product description	Micropilot FMR51, FMR52 HART

3.1.3Electronics housing

5
4
3
2
9
1
6
7
8
A0012422

3 Design of the electronics housing 1 Electronics compartment cover

2Display module

3Main electronics module

4Cable glands (1 or 2, depending on instrument version)

5Nameplate

6I/O electronics module

7 Terminals (pluggable spring terminals)

8 Connection compartment cover

9Grounding terminal

16	Endress+Hauser

Micropilot FMR51, FMR52 HART	Incoming acceptance and product identification

4Incoming acceptance and product identification

4.1Incoming acceptance

Upon receipt of the goods check the following:

•Are the order codes on the delivery note and the product sticker identical?

•Are the goods undamaged?

•Do the nameplate data match the ordering information on the delivery note?

•Is the DVD with the operating tool present?

If required (see nameplate): Are the Safety Instructions (XA) present?

If one of these conditions is not satisfied, contact your Endress+Hauser Sales Center.

4.2Product identification

The following options are available for identification of the measuring device:

•Nameplate specifications

•Extended order code with breakdown of the device features on the delivery note

•Enter serial numbers from nameplates in W@M Device Viewer

( www.endress.com/deviceviewer ): All information about the measuring device is displayed.

•Enter the serial number from the nameplates into the Endress+Hauser Operations App or scan the 2-D matrix code (QR code) on the nameplate with the Endress+Hauser Operations App: all the information for the measuring device is displayed.

For an overview of the scope of the associated Technical Documentation, refer to the following:

•The W@M Device Viewer: Enter the serial number from the nameplate (www.endress.com/deviceviewer)

•The Endress+Hauser Operations App: Enter the serial number from the nameplate or scan the 2-D matrix code (QR code) on the nameplate.

Endress+Hauser

17

Incoming acceptance and product identification	Micropilot FMR51, FMR52 HART

4.2.1	Nameplate
					92 (3.62)
				2
		1
	Order code:			3				10
	Ser. no.:			4		8
	Ext. ord. cd.:			5
				26
				25				(1.85)
	Tp max =			24	MWP:	6	9
			23		LN =	7		47
					15
	Ta:	22		21
	Mat.:
				20			11
	FW:	18		Dev.Rev.:	16
							if modification
	19			17		13 X = see sep. label		12
							14
						Date:
								MM (IN)
								A0019444

4 Nameplate of the Micropilot

1Device name

2 Address of manufacturer

3Order code

4Serial number (Ser. no.)

5 Extended order code (Ext. ord. cd.)

6Process pressure

7 Antenna length (only for FMR51 with antenna extension)

8Certificate symbol

9 Certificate and approval relevant data

10Degree of protection: e.g. IP, NEMA

11Document number of the Safety Instructions: e.g. XA, ZD, ZE

12Data Matrix Code

13Modification mark

14Manufacturing date: year-month

15Temperature resistance of the cable

16Device revision

17Additional information about the device version (certificates, approvals, communication): e.g. SIL, PROFIBUS

18Firmware version (FW)

19CE mark, C-Tick

20Profibus PA: Profil-Version; FOUNDATION Fieldbus: Device ID

21Material in contact with process

22Permitted ambient temperature (Ta)

23Size of the thread of the cable glands

24Maximum process temperature

25Signal outputs

26Operating voltage

Only 33 digits of the extended order code can be indicated on the nameplate. If the extended order code exceeds 33 digits, the rest will not be shown. However, the complete extended order code can be viewed in the operating menu of the device:

Extended order code 1 to 3 parameter

18	Endress+Hauser

Micropilot FMR51, FMR52 HART	Storage, Transport

5Storage, Transport

5.1Storage conditions

•Permitted storage temperature: –40 to +80 °C (–40 to +176 °F)

•Use the original packaging.

5.2Transport product to the measuring point

NOTICE

Housing or antenna horn may be damaged or break away.

Risk of injury!

Transport the measuring device to the measuring point in its original packaging or at the process connection.

Do not fasten lifting devices (hoisting slings, lifting eyes etc.) at the housing or the antenna horn but at the process connection. Take into account the mass center of the device in order to avoid unintended tilting.

Comply with the safety instructions, transport conditions for devices over 18kg (39.6lbs) (IEC61010).

A0016875

Endress+Hauser

19

Installation	Micropilot FMR51, FMR52 HART

6Installation

6.1Installation conditions

6.1.1Mounting position

1

2

3

A

A0016882

•Recommended distance A from wall to outer edge of nozzle: ~ 1/6 of tank diameter.

Nevertheless the device should not be installed closer than 15 cm (5.91 in) to the tank wall.

•Not in the center (2), as interference can cause signal loss.

•Not above the fill stream (3).

•It is recommended to us a weather protection cover (1) in order to protect the device from direct sun or rain.

20	Endress+Hauser

Micropilot FMR51, FMR52 HART	Installation

6.1.2Vessel installations

Avoid any installations (point level switches, temperature sensors, braces, vacuum rings, heating coils, baffles etc.) inside the signal beam. Take into account the beam angle → 23.

A0018944

6.1.3Reduction of interference echoes

Metallic screens mounted at a slope spread the radar signal and can, therefore, reduce interference echoes.

A0016890

Endress+Hauser

21

Installation	Micropilot FMR51, FMR52 HART

6.1.4Measurement in a plastic vessel

If the outer wall of the vessel is made of a non-conductive material (e.g. GRP), microwaves can also be reflected off interfering installations outside the vessel (e.g. metallic pipes (1), ladders (2), grates (3), ...). Therefore, there should be no such interfering installations in the signal beam. Please contact Endress+Hauser for further information.

2

1	3

A0017123

6.1.5Optimization options

•Antenna size

The bigger the antenna, the smaller the beam angle α and the fewer interference echoes → 23.

•Mapping

The measurement can be optimized by means of electronic suppression of interference echoes.

See the Confirm distance parameter (→ 129) for details.

•Antenna alignment

Take into account the marker on the flange or threaded connection .

•Stilling well

A stilling well can be applied to avoid interferences → 30.

•Metallic screens mounted at a slope

They spread the radar signals and can, therefore, reduce interference echoes.

22	Endress+Hauser

Micropilot FMR51, FMR52 HART	Installation

6.1.6Beam angle

α

W = 2 . D . TAN _2

D

α

W

A0016891

5 Relationship between beam angle α, distance D and beamwidth diameter W

The beam angle is defined as the angle α where the energy density of the radar waves reaches half the value of the maximum energy density (3-dB-width). Microwaves are also emitted outside the signal beam and can be reflected off interfering installations.

Beam diameter W as a function of beam angle α and measuring distance D:

FMR51

Antenna size	40 mm (1½ in)	50 mm (2 in)	80 mm (3 in)	100 mm (4 in)
Beam angle α	23°	18°	10°	8°
Measuring		Beamwidth diameter W
distance (D)
3 m (9.8 ft)	1.22 m (4 ft)	0.95 m (3.1 ft)	0.53 m (1.7 ft)	0.42 m (1.4 ft)
6 m (20 ft)	2.44 m (8 ft)	1.9 m (6.2 ft)	1.05 m (3.4 ft)	0.84 m (2.8 ft)
9 m (30 ft)	3.66 m (12 ft)	2.85 m (9.4 ft)	1.58 m (5.2 ft)	1.26 m (4.1 ft)
12 m (39 ft)	4.88 m (16 ft)	3.80 m (12 ft)	2.1 m (6.9 ft)	1.68 m (5.5 ft)
15 m (49 ft)	6.1 m (20 ft)	4.75 m (16 ft)	2.63 m (8.6 ft)	2.10 m (6.9 ft)
20 m (66 ft)	8.14 m (27 ft)	6.34 m (21 ft)	3.50 m (11 ft)	2.80 m (9.2 ft)
25 m (82 ft)	10.17 m (33 ft)	7.92 m (26 ft)	4.37 m (14 ft)	3.50 m (11 ft)
30 m (98 ft)	-	9.50 m (31 ft)	5.25 m (17 ft)	4.20 m (14 ft)
35 m (115 ft)	-	11.09 m (36 ft)	6.12 m (20 ft)	4.89 m (16 ft)
40 m (131 ft)	-	12.67 m (42 ft)	7.00 m (23 ft)	5.59 m (18 ft)
45 m (148 ft)	-	-	7.87 m (26 ft)	6.29 m (21 ft)
60 m (197 ft)	-	-	10.50 m (34 ft)	8.39 m (28 ft)
70 m (230 ft)	-	-	-	9.79 m (32 ft)

Endress+Hauser

23

Installation			Micropilot FMR51, FMR52 HART
		FMR52
	Antenna size	50 mm (2 in)		80 mm (3 in)
	Beam angle α	18°		10°
	Measuring distance (D)	Beamwidth diameter W
	3 m (9.8 ft)	0.95 m (3.1 ft)		0.53 m (1.7 ft)
	6 m (20 ft)	1.9 m (6.2 ft)		1.05 m (3.4 ft)
	9 m (30 ft)	2.85 m (9.4 ft)		1.58 m (5.2 ft)
	12 m (39 ft)	3.80 m (12 ft)		2.1 m (6.9 ft)
	15 m (49 ft)	4.75 m (16 ft)		2.63 m (8.6 ft)
	20 m (66 ft)	6.34 m (21 ft)		3.50 m (11 ft)
	25 m (82 ft)	7.92 m (26 ft)		4.37 m (14 ft)
	30 m (98 ft)	9.50 m (31 ft)		5.25 m (17 ft)
	35 m (115 ft)	11.09 m (36 ft)		6.12 m (20 ft)
	40 m (131 ft)	12.67 m (42 ft)		7.00 m (23 ft)
	45 m (148 ft)	-		7.87 m (26 ft)
	60 m (197 ft)	-		10.50 m (34 ft)

6.2Measuring conditions

•In case of boiling surfaces, bubbling or tendency for foaming use FMR53 or FMR54. Depending on its consistence, foam can either absorb microwaves or reflect them off the foam surface. Measurement is possible under certain conditions. For FMR50, FMR51 and FMR52, the additional option "Advanced dynamics" is recommended in these cases (feature 540: "Application Package", option EM).

•In case of heavy steam development or condensate, the maximum measuring range of FMR50, FMR51 and FMR52 may decrease depending on density, temperature and composition of the steam → use FMR53 or FMR54.

•For the measurement of absorbing gases such as ammonia NH3 or some fluorocarbons 2), please use Levelflex or Micropilot FMR54 in a stilling well.

•The measuring range begins, where the beam hits the tank bottom. Particularly with dish bottoms or conical outlets the level cannot be detected below this point.

•In stilling well applications, the electromagnetic waves do not propagate completely outside the tube. It must be taken into account that the accuracy may be reduced in the area C. In order to guarantee the required accuracy in these cases, it is recommended to position the zero-point at a distance C above the end of the tube (see figure).

•In case of media with a low dielectric constant (εr = 1.5 to 4) 3) the tank bottom can be visible through the medium at low levels (low height C). Reduced accuracy has to be expected in this range. If this is not acceptable, we recommend positioning the zero point at a distance C (see figure) above the tank bottom in these applications.

•In principle it is possible to measure up to the tip of the antenna with FMR51, FMR53 and FMR54. However, due to considerations regarding corrosion and build-up, the end of the measuring range should not be chosen any closer than A (see figure) to the tip of the antenna.

•When using FMR54 with planar antenna, especially for media with low dielectric constants, the end of the measuring range should not be closer than A: 1 m (3.28 ft) to the flange.

•The smallest possible measuring range B depends on the antenna version (see figure).

•The tank height should be at least H (see table).

2)Affected compounds are e.g. R134a, R227, Dymel 152a.

3)Dielectric constants of important media commonly used in various industries are summarized in the DC manual (CP01076F) and in the Endress +Hauser "DC Values App" (available for Android and iOS).

24	Endress+Hauser

Micropilot FMR51, FMR52 HART			Installation

A

100%

B

H

0%	C
	ØD
	A0018872

	Device	A [mm (in)]	B [m (ft)]	C [mm (in)]		H [m (ft)]
	FMR51	50(1.97)	> 0.2 (0.7)	50 to 250 (1.97 to	9.84)	> 0.3 (1.0)
	FMR52	200(7.87)

6.3 Mounting cladded flanges

• Use flange screws according to the number of flange holes.

• Tighten the screws with the required torque (see table).

• Retighten the screws after 24 hours or after the first temperature cycle.

• Depending on process pressure and process temperature check and retighten the screws at regular intervals.

Usually, the PTFE flange cladding also serves as a seal between the nozzle and the device flange.

Flange size	Number of screws	Recommended torque [Nm]
		minimum	maximum
EN
DN50/PN16	4	45	65
DN80/PN16	8	40	55
DN100/PN16	8	40	60
DN150/PN16	8	75	115
ASME
2"/150lbs	4	40	55
3"/150lbs	4	65	95
4"/150lbs	8	45	70
6"/150lbs	8	85	125

Endress+Hauser

25

Installation			Micropilot FMR51, FMR52 HART
Flange size		Number of screws	Recommended torque [Nm]
			minimum	maximum
JIS
10K	50A	4	40	60
10K	80A	8	25	35
10K	100A	8	35	55
10K	100A	8	75	115

6.4Installation in vessel (free space)

6.4.1Horn antenna (FMR51)

Alignment

•Align the antenna vertically to the product surface.

The maximum range may be reduced if the horn antenna is not vertically aligned.

•A marking at the flange (somewhere between the flange holes) or the boss enables alignment of the antenna. This marking must be aligned towards the tank wall as well as possible.

A		B
90°	90°	90°	90°
	90°		90°
90°		90°
	90°		90°
			A0018974

Depending on the device version the marking may be a circle or two short parallel lines.

Nozzle mounting

For optimum measurement, the tip of the antenna should extend below the nozzle.

Depending on the antenna size this is achieved by the following maximum nozzle heights:

26	Endress+Hauser

Micropilot FMR51, FMR52 HART

Installation

MAX

H

		A0016820
6	Nozzle height for horn antenna (FMR51)
Antenna 1)		Maximum nozzle height Hmax
BA: Horn 40mm/1-1/2"		86 mm (3.39 in)
BB: Horn 50mm/2"		115 mm (4.53 in)
BC: Horn 80mm/3"		211 mm (8.31 in)
BD Horn 100mm/4"		282 mm (11.1 in)

1)Feature 070 of the product structure

Conditions for longer nozzles

If the medium has good reflective properties, higher nozzles can be accepted. In this case the maximum nozzle height, Hmax, is dependent on the nozzle diameter, D:

MAX

H

ØD

A0023611

Nozzle diameter D	Maximum nozzle height	Recommended antenna 1)
	Hmax
40 mm (1.5 in)	100 mm (3.9 in)	BA: Horn 40mm/1-1/2"
50 mm (2 in)	150 mm (5.9 in)	BB: Horn 50mm/2"
80 mm (3 in)	250 mm (9.8 in)	BC: Horn 80mm/3"

Endress+Hauser

27

Installation			Micropilot FMR51, FMR52 HART
	Nozzle diameter D	Maximum nozzle height	Recommended antenna 1)
		Hmax
	100 mm (4 in)	500 mm (19.7 in)	BD: Horn 100mm/4"
	150 mm (6 in)	800 mm (31.5 in)	BD: Horn 100mm/4"

1)Feature 070 of the product structure

If the antenna doesn't extend below the nozzle, observe the following:

•The nozzle end must be smooth and free of burrs. If possible its edge should be rounded.

•An interference echo suppression must be performed.

•Please contact Endress+Hauser for applications with higher nozzles than those indicated in the table.

• For mounting in heigh nozzles the device is available in a version with an antenna extension of up to 1 000 mm (39.4 in) 4)

•The antenna extension may cause interference echoes in the near range. In this case it may occur that the maximum measurable level is reduced.

Threaded connection

For devices with a threaded connection it may be necessary - depending on the antenna size - to unmount the horn before fastening the device and to mount it again afterwards.

•Tighten with the hexagonal nut only.

•Tool : 55 mm hexagonal wrench

•Maximum permissible torque: 60 Nm (44 lbf ft)

6.4.2Measurement from the outside through plastic walls (FMR50/ FMR51)

•Dielectric constant of the medium: εr > 10

•If possible, use an antenna 100 mm (4 in).

•The distance from the lower edge of the antenna to the tank ceiling should be about 100 mm (4 in).

•If possible, avoid mounting locations where condensation or build-up might occur.

•In case of outdoor mounting, the space between antenna and vessel has to be protected from the elements.

•Do not mount any potential reflectors (e.g. pipes) outside the tank in the signal beam.

Suitable thickness of the tank ceiling:

Penetrated material	PE	PTFE	PP	Perspex
DK / εr	2.3	2.1	2.3	3.1
Optimum thickness 1)	3.8 mm (0.15 in)	4.0 mm (0.16 in)	3.8 mm (0.15 in)	3.3 mm (0.13 in)

1)Other possible values for the thickness are multiples of the values listed (e.g. for PE: 7,6 mm (0.3 in), 11,4 mm (0.45 in)

4)Feature 610 "Accessory mounted" of the product structure.

28	Endress+Hauser

Micropilot FMR51, FMR52 HART

Installation

6.4.3Horn antenna, flush mount (FMR52)

Alignment

•Align the antenna vertically to the product surface.

The maximum range may be reduced if the horn antenna is not vertically aligned.

•A marking at the flange (somwhere between the flange holes) or the boss enables alignment of the antenna. This marking must be aligned towards the tank wall as well as possible.

A		B
90°	90°	90°	90°
	90°		90°
90°		90°
	90°		90°
			A0018974

Depending on the device version the marking may be a circle or two short parallel lines.

Nozzle mounting

									MAX
								H
											A0016819
7	Nozzle height for horn antenna, flush mount (FMR52)
Antenna 1)			Maximum nozzle height Hmax
BO: Horn 50mm/2"			500 mm (19.7 in)
BP: Horn 80mm/3"			500 mm (19.7 in)

1)Feature 070 of the product structure

Please contact Endress+Hauser for applications with higher nozzle.

•For flanges with PTFE cladding: Observe the notes on the mounting of cladded flanges → 25.

•Usually, the PTFE flange cladding also serves as a seal between the nozzle and the device flange.

Endress+Hauser

29

Installation	Micropilot FMR51, FMR52 HART

6.5Installation in stilling well

90°

1

A0016841

8 Installation in stilling well

1Marking for antenna alignment

•For horn antenna: Align the marking towards the slots of the stilling well.

•Measurements can be performed through an open full bore ball valve without any problems.

•After mounting, the housing can be turned 350° in order to facilitate access to the display and the terminal compartment → 34.

6.5.1Recommendations for the stilling well

•Metal (no enamel coating; plastic on request).

•Constant diameter.

•Diameter of stilling well not larger than antenna diameter.

•Diameter difference between horn antenna and inner diameter of the stilling well as small as possible.

•Weld seam as smooth as possible and on the same axis as the slots.

•Slots offset 180° (not 90°).

•Slot width or diameter of holes max. 1/10 of pipe diameter, de-burred. Length and number do not have any influence on the measurement.

•Select horn antenna as big as possible. For intermedaite sizes (e.g. 180 mm (7 in)) select next larger antenna and adapt it mechanically (for horn antennas)

•At any transition (i.e. when using a ball valve or mending pipe segments), no gap may be left exceeding 1 mm (0.04 in).

•The stilling well must be smooth on the inside (average roughness Rz ≤

6.3 μm (248 μin)). Use extruded or parallel welded metal pipe. An extension of the pipe is possible with welded flanges or pipe sleeves. Flange and pipe have to be properly aligned at the inside.

•Do not weld through the pipe wall. The inside of the stilling well must remain smooth. In case of unintentional welding through the pipe, the weld seam and any unevenness on the inside need to be carefully removed and smoothened. Otherwise, strong interference echoes will be generated and material build-up will be promoted.

•In the case of smaller nominal widths flanges must be welded to the pipe such that they

allow for a correct orientation (marker aligned toward slots).

30	Endress+Hauser