Endress+Hauser micropilot M FMR 231 User manual

BA 219F/00/en/12.03
Nr. 52006319
Valid as of software version:
V 01.02.00 (amplifier)
V 01.02.00 (communication)
micropilot M
FMR 231
HART/4...20 mA
Level-Radar
Operating Instructions
HART
R
FIELD COMMUNICATION PROTOCOL

Micropilot M FMR 231 with HART/4...20 mA
2Endress + Hauser
Brief operating instructions
L00-FMR2xxxx-19-00-00-en-039
!Note!
This operating manual explains the installation and initial start-up for the level
transmitter. All functions that are required for a typical measuring task are taken into
account here. In addition, the Micropilot M provides many other functions that are not
included in this operating manual, such as optimising the measuring point and
converting the measured values.
An overview of all device functions can be found on Page 82.
The operating manual BA 221F/00/en "Description of the instrument functions for
Micropilot M" provides an extensive description of all device functions, which can be
found on the enclosed CD-ROM.
E
+
-
+
E
+
-
F
L
D
E
E
E
-
… …
… …
KA 159F/00/a2/05.02
52006292
52006292
… …
Micropilot M - Brief operating instructions
- dome
ceiling
- horizontal
cyl.
- bypass
…
- unknown
- DC: <1.9
- DC: 1.9 … 4
- DC: 4 … 10
- DC: >10
- standard
- calm
surface
- add. agitator
…
input E
(see sketch)
input F
(see sketch)
only for
bypass +
stilling well
- ok
- too small
- too big
- unknown
- manual
displayed
(see sketch)
D and L are confirm
or specify
range
suggestion
000
measured value
Group
selection
00
basic setup
01
safety settings
0C
system
parameter
09
display
0E
envelope curve
04
linearisation
05
extended calibr.
06
output (HART, FF)
profibus param.(PA)
092
language
0A
diagnostics
0A0
present
error
002
tank shape
004
process
cond.
005
empty
calibr.
006
full
calibr.
007
pipe
diameter
008
dist./
meas value
051
check
distance
003
medium
cond.
052
range of
mapping
053
start
mapping
008
dist./
meas value
flange:
reference point
of measurement
- envel. curve
- incl. FAC
- incl. cust. map
- single curve
- cyclic
= 100: unlocked
100: locked≠
= 2457: unlocked
2457: locked≠
0E1
plot settings
0E2
recording
curve
0A1
previous
error
0A4
unlock
parameter
threaded connection:
reference point of
measurement
HART
PA , F F
}
}
Contrast: +or+

Micropilot M FMR 231 with HART/4...20 mA Endress + Hauser
Endress + Hauser 3
Table of contents
1 Safety instructions . . . . . . . . . . . . . . 4
1.1 Designated use . . . . . . . . . . . . . . . . . . . . . . . . 4
1.2 Installation, commissioning and operation . . . 4
1.3 Operational safety . . . . . . . . . . . . . . . . . . . . . . 4
1.4 Notes on safety conventions and symbols . . . 5
2 Identification . . . . . . . . . . . . . . . . . . . 6
2.1 Device designation . . . . . . . . . . . . . . . . . . . . . 6
2.2 Scope of delivery . . . . . . . . . . . . . . . . . . . . . . . 9
2.3 Certificates and approvals . . . . . . . . . . . . . . . . 9
2.4 Registered trademarks . . . . . . . . . . . . . . . . . . 9
3 Mounting . . . . . . . . . . . . . . . . . . . . . 10
3.1 Quick installation guide . . . . . . . . . . . . . . . . . 10
3.2 Incoming acceptance, transport, storage . . . 11
3.3 Installation conditions . . . . . . . . . . . . . . . . . . 12
3.4 Installation instructions . . . . . . . . . . . . . . . . . 18
3.5 Post-installation check . . . . . . . . . . . . . . . . . . 20
4 Wiring . . . . . . . . . . . . . . . . . . . . . . . . 21
4.1 Quick wiring guide . . . . . . . . . . . . . . . . . . . . . 21
4.2 Connecting the measuring unit . . . . . . . . . . . 23
4.3 Recommended connection . . . . . . . . . . . . . . 26
4.4 Degree of protection . . . . . . . . . . . . . . . . . . . 26
4.5 Post-connection check . . . . . . . . . . . . . . . . . 26
5 Operation . . . . . . . . . . . . . . . . . . . . . 27
5.1 Quick operation guide . . . . . . . . . . . . . . . . . . 27
5.2 Display and operating elements . . . . . . . . . . 29
5.3 Local operation . . . . . . . . . . . . . . . . . . . . . . . 31
5.4 Display and acknowledging error messages 34
5.5 HART communication . . . . . . . . . . . . . . . . . . 35
6 Commissioning . . . . . . . . . . . . . . . . 38
6.1 Function check . . . . . . . . . . . . . . . . . . . . . . . 38
6.2 Switching on the measuring device . . . . . . . . 38
6.3 Basic Setup . . . . . . . . . . . . . . . . . . . . . . . . . . 39
6.4 Basic Setup with the VU 331 . . . . . . . . . . . . . 41
6.5 Basic Setup with the ToF Tool . . . . . . . . . . . . 53
7 Maintenance . . . . . . . . . . . . . . . . . . 58
8 Accessories . . . . . . . . . . . . . . . . . . . 59
9 Trouble-shooting. . . . . . . . . . . . . . . 61
9.1 Trouble-shooting instructions . . . . . . . . . . . . 61
9.2 System error messages . . . . . . . . . . . . . . . . . 62
9.3 Application errors . . . . . . . . . . . . . . . . . . . . . 64
9.4 Orientation of the Micropilot . . . . . . . . . . . . . . 66
9.5 Spare parts . . . . . . . . . . . . . . . . . . . . . . . . . . 68
9.6 Return . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
9.7 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
9.8 Software history . . . . . . . . . . . . . . . . . . . . . . . 75
9.9 Contact addresses of Endress+Hauser . . . . . 75
10 Technical data . . . . . . . . . . . . . . . . . 76
10.1 Additional technical data . . . . . . . . . . . . . . . . 76
11 Appendix . . . . . . . . . . . . . . . . . . . . . . 82
11.1 Operating menu HART (display modul),
ToF Tool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
11.2 Operating matrix HART / Commuwin II . . . . . . 84
11.3 Description of functions . . . . . . . . . . . . . . . . . 85
11.4 Function and system design . . . . . . . . . . . . . . 86
Index. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

Safety instructions Micropilot M FMR 231 with HART/4...20 mA
4Endress + Hauser
1Safetyinstructions
1.1 Designated use
The Micropilot M FMR 231 is a compact radar level transmitter for the continuous,
contactless measurement of liquids, pastes and sludge. The device can also be freely
mounted outside closed metal vessels because of its operating frequency of about
6 GHz and a maximum radiated pulsed energy of 1mW (average power output 1 µW).
Operation is completely harmless to humans and animals.
1.2 Installation, commissioning and operation
The Micropilot M has been designed to operate safely in accordance with current
technical, safety and EU standards. If installed incorrectly or used for applications for
which it is not intended, however, it is possible that application-related dangers may
arise, e.g. product overflow due to incorrect installation or calibration. For this reason,
the instrument must be installed, connected, operated and maintained according to the
instructions in this manual: personnel must be authorised and suitably qualified. The
manual must have been read and understood, and the instructions followed.
Modifications and repairs to the device are permissible only when they are expressly
approved in the manual.
1.3 Operational safety
1.3.1 Hazardous areas
Measuring systems for use in hazardous environments are accompanied by separate
"Ex documentation", which is an integral part of this Operating Manual. Strict
compliance with the installation instructions and ratings as stated in this supplementary
documentation is mandatory.
•Ensure that all personnel are suitably qualified.
•Observe the specifications in the certificate as well as national and local regulations.
1.3.2 FCC approval
This device complies with part 15 of the FCC Rules. Operation is subject to the following
two conditions: (1) This device may not cause harmful interference, and (2) this device
must accept any interference received, including interference that may cause
undesired operation.
"Caution!
Changes or modifications not expressly approved by the part responsible for
compliance could void the user’s authority to operate the equipment.

Micropilot M FMR 231 with HART/4...20 mA Safety instructions
Endress + Hauser 5
1.4 Notes on safety conventions and symbols
In order to highlight safety-relevant or alternative operating procedures in the manual,
the following conventions have been used, each indicated by a corresponding symbol
in the margin.
Symbol Meaning
#Warning!
A warning highlights actions or procedures which, if not performed correctly,
will lead to personal injury, a safety hazard or destruction of the instrument
"Caution!
Caution highlights actions or procedures which, if not performed correctly,
may lead to personal injury or incorrect functioning of the instrument
!Note!
A note highlights actions or procedures which, if not performed correctly, may
indirectly affect operation or may lead to an instrument response which is not
planned
0Device certified for use in explosion hazardous area
If the device has this symbol embossed on its name plate it can be installed in
an explosion hazardous area
-Explosion hazardous area
Symbol used in drawings to indicate explosion hazardous areas.
– Devices located in and wiring entering areas with the designation
“explosion hazardous areas” must conform with the stated type of protection
.
Safe area (non-explosion hazardous area)
Symbol used in drawings to indicate, if necessary, non-explosion hazardous
areas.
– Devices located in safe areas still require a certificate if their outputs run into
explosion hazardous areas
%Direct voltage
A terminal to which or from which a direct current or voltage may be applied or
supplied
&Alternating voltage
A terminal to which or from which an alternating (sine-wave) current or voltage
may be applied or supplied
)Grounded terminal
A grounded terminal, which as far as the operator is concerned, is already
grounded by means of an earth grounding system
*Protective grounding (earth) terminal
A terminal which must be connected to earth ground prior to making any other
connection to the equipment
+Equipotential connection (earth bonding)
A connection made to the plant grounding system which may be of type e.g.
neutral star or equipotential line according to national or company practice

Identification Micropilot M FMR 231 with HART/4...20 mA
6Endress + Hauser
2 Identification
2.1 Device designation
2.1.1 Nameplate
The following technical data are given on the instrument nameplate:
L00-FMR2xxxx-18-00-00-en-001
Fig. 1: Information on the nameplate of the Micropilot M (example)
2.1.2 Ordering structure
Ordering structure Micropilot M FMR 231
10 Certificates
A For non-hazardous areas
F For non-hazardous areas + WHG
1 ATEX II 1/2 G EEx ia IIC T6
2 ATEX II 1/2 G EEx ia IIC T6, note safety instruction (XA) for electrostatic charging!
6 ATEX II 1/2 G EEx ia IIC T6 + WHG
7 ATEX II 1/2 G EEx ia IIC T6 + WHG, note safety instruction (XA) for electrostatic charging!
3 ATEX II 1/2 G EEx em [ia] IIC T6
8 ATEX II 1/2 G EEx em [ia] IIC T6 + WHG
4 ATEX II 1/2 G EEx d [ia] IIC T6
5 ATEX II 1/2 G EEx d [ia] IIC T6, note safety instruction (XA) for electrostatic charging!
G ATEX II 3 G EEx nA II T6
S FM IS - Class I, Division 1, Group A-D
T FM XP - Class I, Division 1, Group A-D
N CSA General Purpose
U CSA IS - Class I, Division 1, Group A-D
V CSA XP - Class I, Division 1, Group A-D
K TIIS EEx ia IIC T4
L TIIS EEx d [ia] IIC T4
W AUS Ex ib IIC T6
Y Special version
FMR 231- Product designation (part 2)

Micropilot M FMR 231 with HART/4...20 mA Identification
Endress + Hauser 7
Ordering structure Micropilot M FMR 231 (continued)
20 Type of antenna, O-ring, inactive length
Type Length Material O-ring Nozzle length
A Rod antenna 360 mm / 14" PPS, antistatic Viton 100 mm / 4"
B Stabantenne 510 mm / 20" PPS, antistatic Viton 250 mm / 10"
E Stabantenne 390 mm / 15" PTFE, fully insulated 100 mm / 4"
F Stabantenne 540 mm / 21" PTFE, fully insulated 250 mm / 10"
H Stabantenne 390 mm / 15" PPS, antistatic + fully insulated 100 mm / 4"
J Stabantenne 540 mm / 21" PPS, antistatic + fully insulated 250 mm / 10"
Y Special version
30 Process connection, material
Threaded connection Standard Material
GGJ 1½" BSPT (R 1½") DIN 2999 316L
GGS 1½" BSPT (R 1½") DIN 2999 PVDF
GNJ NPT 1½" 316L
GNS NPT 1½" PVDF
Sanitary coupling Standard Material
MFJ DN50 dairy coupling DIN 11851 316L
HFJ DN50 aseptic DIN 11864-1 Form A 316L
for tubes according to DIN 11850
TEJ 2" Tri-clamp ISO 2852 316L
TLJ 3" Tri-clamp ISO 2852 316L
Flange Dia/Pressure Standard Material
BFJ DN50 PN16 EN 1092-1, A1) 316L
CFJ DN50 PN16 EN 1092-1, B11) 316L
CFK DN50 PN16 EN 1092-11) PTFE >316L
BMJ DN80 PN16 EN 1092-1, A1) 316L
CMJ DN80 PN16 EN 1092-1, B11) 316L
BNJ DN80 PN40 EN 1092-1, A1) 316L
CNJ DN80 PN40 EN 1092-1, B11) 316L
CMK DN80 PN16 EN 1092-11) PTFE >316L
BQJ DN100 PN16 EN 1092-1, A1) 316L
CQJ DN100 PN16 EN 1092-1, B11) 316L
CQK DN100 PN16 EN 1092-11) PTFE >316L
BWJ DN150 PN16 EN 1092-1, A1) 316L
CWJ DN150 PN16 EN 1092-1, B11) 316L
CWK DN150 PN16 EN 1092-11) PTFE (black) >316L
disc made of antistatic PTFE (black)
AEJ 2"/150 lbs ANSI B16.5 316L
AEK 2"/150 lbs ANSI B16.5 PTFE >316L
ALJ 3"/150 lbs ANSI B16.5 316L
AMJ 3"/300 lbs ANSI B16.5 316L
ALK 3"/150 lbs ANSI B16.5 PTFE >316L
APJ 4"/150 lbs ANSI B16.5 316L
AQJ 4"/300 lbs ANSI B16.5 316L
APK 4"/150 lbs ANSI B16.5 PTFE >316L
AVJ 6"/150 lbs ANSI B16.5 316L
AVK 6"/150 lbs ANSI B16.5 PTFE (black) >316L
disc made of antistatic PTFE (black)
KEJ 10 K 50A JIS B2210 316L
KEK 10 K 50A JIS B2210 PTFE >316L
KLJ 10 K 80A JIS B2210 316L
KLK 10 K 80A JIS B2210 PTFE >316L
KPJ 10 K 100A JIS B2210 316L
KPK 10 K 100A JIS B2210 PTFE >316L
KVJ 10 K 150A JIS B2210 316L
KVK 10 K 150A JIS B2210 PTFE (black) >316L
disc made of antistatic PTFE (black)
YY9 Special version
1) agreeable to DIN 2527
FMR 231- Product designation (part 1)

Identification Micropilot M FMR 231 with HART/4...20 mA
8Endress + Hauser
Ordering structure Micropilot M FMR 231 (continued)
40 Output and menu based operation
A 4…20 mA HART with VU 331 (4-line alphanumeric display)
B4…20mAHART
K 4…20 mA HART, prepared for FHX40, mounting of remote display (accessoty)
C PROFIBUS PA with VU 331 (4-line alphanumeric display)
D PROFIBUS PA
L PROFIBUS PA, prepared for FHX40, mounting of remote display (accessoty)
E Foundation Fieldbus with VU 331 (4-line alphanumeric display)
F Foundation Fieldbus
M Foundation Fieldbus, prepared for FHX40, mounting of remote display (accessoty)
Y Special version
50 Housing
A Aluminium F12-housing, coated, IP65
B 316L F23-housing, IP65/NEMA 4x
C Aluminium T12-housing with separate connection compartment, coated, IP65
D Aluminium T12-housing with separate connection compartment, coated, IP65,
overvoltage protection
Y Special version
60 Gland / Entry
2 M20x1.5 cable gland (for EEx d: cable entry)
3 G ½ cable entry
4 ½ NPT cable entry
5 PROFIBUS PA M12 plug
6 7/8" FF plug
9 Special version
70 Gastight feed through
A without gastight feed through
C with gastight feed through
80 Additional options
A Additional options not selected
B 3.1.B material, wetted parts 316L, Inspection Certificate EN 10204,
acc. specification 52005759
S GL (German Lloyd) marine certificate
Y Special version
FMR 231- Complete product designation

Micropilot M FMR 231 with HART/4...20 mA Identification
Endress + Hauser 9
2.2 Scope of delivery
"Caution!
It is essential to follow the instructions concerning the unpacking, transport and storage
of measuring instruments given in the chapter "Incoming acceptance, transport,
storage" on Page 11!
The scope of delivery consists of:
•Assembled instrument
•2 ToF Tool - FieldTool®Package CD-ROMs
– CD 1: ToF Tool - FieldTool®Program
Program including Device Descriptions (device drivers) and documentation for all
Endress+Hauser devices wich are operable using ToF Tool
– CD 2: ToF Tool - FieldTool®Utilities
Utility program (e.g. Adobe Acrobat Reader, MS Internet Explorer)
•Accessories (→Chap. 8)
Accompanying documentation:
•Short manual (basic setup/troubleshooting): housed in the instrument
•Operating manual (this manual)
•Approval documentation: if this is not included in the operating manual.
!Note!
The operating manual "Description of Instrument Functions" you can be found on the
enclosed CR-ROM.
2.3 Certificates and approvals
CE mark, declaration of conformity
The instrument is designed 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. The instrument
complies with the applicable standards and regulations in accordance with EN 61010
"Protection Measures for Electrical Equipment for Measurement, Control, Regulation
and Laboratory Procedures". The instrument described in this manual thus complies
with the statutory requirements of the EG directives. Endress+Hauser confirms the
successful testing of the instrument by affixing to it the CE mark.
2.4 Registered trademarks
KALREZ®, VITON®, TEFLON®
Registered trademark of the company, E.I. Du Pont de Nemours & Co., Wilmington, USA
TRI-CLAMP®
Registered trademark of the company, Ladish & Co., Inc., Kenosha, USA
HART®
Registered trademark of HART Communication Foundation, Austin, USA
ToF®
Registered trademark of the company Endress+Hauser GmbH+Co. KG, Maulburg,
Germany
PulseMaster®
Registered trademark of the company Endress+Hauser GmbH+Co. KG, Maulburg,
Germany
PhaseMaster®
Registered trademark of the company Endress+Hauser GmbH+Co. KG, Maulburg,
Germany

Mounting Micropilot M FMR 231 with HART/4...20 mA
10 Endress + Hauser
3 Mounting
3.1 Quick installation guide
L00-FMR231xx-17-00-00-en-003
1
1
2
2
#
90°
90°
90°
90°
90°
90°
90°
90°
90°
90°
9
DN50
ANSI 2”
DN80…150
ANSI 3…6”
F12/F23 housing
T12 housing
Turn housing
Observe orientation when installing!
Installation in tank (free space):
Mark on process connector facing the nearest tank wall!
The housing can be turned 350°
in order to simplify access to the
display and the terminal compartment
Allen key
4 mm
1½” BSPT (R 1½”)
or
1½NPT
mark at instrument flange
or threaded boss

Micropilot M FMR 231 with HART/4...20 mA Mounting
Endress + Hauser 11
3.2 Incoming acceptance, transport, storage
3.2.1 Incoming acceptance
Check the packing and contents for any signs of damage.
Check the shipment, make sure nothing is missing and that the scope of supply
matches your order.
3.2.2 Transport
"Caution!
Follow the safety instructions and transport conditions for instruments of more than
18 kg.
Do not lift the measuring instrument by its housing in order to transport it.
3.2.3 Storage
Pack the measuring instrument so that is protected against impacts for storage and
transport. The original packing material provides the optimum protection for this.
The permissible storage temperature is -40 °C…+80 °C.

Mounting Micropilot M FMR 231 with HART/4...20 mA
12 Endress + Hauser
3.3 Installation conditions
3.3.1 Dimensions
Housing dimensions
L00-F12xxxx-06-00-00-en-001
L00-T12xxxx-06-00-00-en-001
L00-F23xxxx-06-00-00-en-001
ENDRESS+HAUSER
65 78
max. 110
85
150
Ø129
(Aluminium)
F12 housing
ENDRESS+HAUSER
78
85
65
162
max. 100 94
Ø129
(Aluminium)
T12 housing
max. 94 104
Ø129
150
40
(316L)
F23 housing

Micropilot M FMR 231 with HART/4...20 mA Mounting
Endress + Hauser 13
Micropilot M FMR 231 - process connection, type of antenna
L00-FMR231xx-06-00-00-en-005
a
a
L2
390 / 540
Ø33
a
Ø25
ØD
L2
360 / 510
L2
390 / 540
Ø33
43
b
23
a
41
77
44.5
80.5
41
77
41
77
b [mm]
DN 80DN 50
20 (24)18
200 (200)165
D [mm] 220
20
DN 100
285
22
DN 150
b [mm]b [mm]
DN 803” DN 502”
1823.9 (28.4) 1619.1
185190.5 (209.5) 155 152.4 D [mm]D [mm] 210228.6 (254)
1823.9 (31.8)
DN 1004”
280279.4
2225.4
DN 1506”
Threaded connection
1 ½” (R
or 1 ½NPT
BSPT 1 ½”)Flange DN 50…150
or equivalent
PPS, antistatic PTFE, antistatic
DN 50 dairy coupling
DIN 11851
2”/3”Tri-clamp
ISO 2852
a [mm]
without gastight
feedthrough
a [mm]
with gastight
feedthrough
Flange
DN 50…150 DN 50 aseptic coupling DN 50 diary coupling 2”/3” Tri-clamp
Process
connection
Inactive length, equivalent
to max. nozzle height
L2 = 100 mm / 250 mm
for PN 16 (for PN 40)
Flange
Flange to EN 1092-1 (agreeable to DIN 2527)
PTFE
(in conjunction with
)
DN50 aseptic/dairy coupling
respectively Tri-clamp
FDA-listed TFM 1600
for 10K
Flange
Flange to JIS B2210
for 150 lbs (for 300 lbs)
Flange
Flange to ANSI B16.5
DN 50 aseptic
DIN 11864-1 form A
with O-ring for tubes
according to DIN 11850
F12 /T12 / F23 housing

Mounting Micropilot M FMR 231 with HART/4...20 mA
14 Endress + Hauser
3.3.2 Engineering hints
Orientation
•Recommended distance (1) wall – outer
edge of nozzle: ~1/6 of tank diameter.
Nevertheless the device should not be
installed closer than 30 cm (12“) to the
tankwall.
•Not in the centre (3), interference can
cause signal loss.
•Not above the fill stream (4).
•It is recommended to use a weather
protection cover (2) in order to protect
the transmitter from direct sun or rain.
Assembly and disassembly is simply
done by means of a tension clamp
(→Chap. 8 on Page 59).
L00-FMR2xxxx-17-00-00-xx-006
Tank installations
•Avoid any installations (1), like limit
switches, temperature sensors, etc.,
inside the signal beam (refer to beam
angle see "Beam angle" on Page 15).
•Symmetrical installations (2), i.e.
vacuum rings, heating coils, baffles,
etc., can also interfere with the
measurement.
Optimization options
•Antenna size: the bigger the antenna,
the smaller the beam angle, the less
interference echoes.
•Mapping: the measurement can be
optimized by means of electronic
suppression of interference echoes.
•Antenna alignment: refer to "optimum
mounting position" (see Page 18).
•Stilling well: a stilling well respectively a
Wave Guide antenna can always be
used to avoid interference.
Please contact Endress+Hauser for
further information.
L00-FMR2xxxx-17-00-00-xx-007

Micropilot M FMR 231 with HART/4...20 mA Mounting
Endress + Hauser 15
Beam angle
The beam angle is defined as the angle a where the energy density of the radar waves
reaches half the value of the maximum energy density (3dB-width). Microwaves are also
emitted outside the signal beam and can be reflected off interfering installations. Beam
diameter Was function of antenna type (beam angle α) and measuring distance D:
Antenna FMR 231
Rod
L00-FMR2xxxx-14-00-06-de-027
Beam angle α30°
Measuring dis-
tance (D) Beam diameter (W) Rod
3 m / 10 ft 1,61 m / 5.36 ft
6 m / 20 ft 3,22 m / 10.72 ft
9 m / 30 ft 4,83 m / 16.08 ft
12 m / 40 ft 6,43 m / 21.44 ft
15 m / 49 ft 8,04 m / 26.26 ft
20 m / 65 ft 10,72 m / 34.83.ft
α
D
W

Mounting Micropilot M FMR 231 with HART/4...20 mA
16 Endress + Hauser
Measuring conditions
!Note!
Please use FMR 230 in stilling well for the measurement of ammonia NH3.
•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 case of media with a low dielectric constant (groups A and B), the tank bottom can
be visible through the medium at low levels. In order to guarantee the required
accuracy in these cases, it is recommended to position the zero-point at a distance C
above the tank bottom (see Fig.).
•In principle it is possible to measure up to the tip of the antenna with FMR 230/231/
240. However, due to considerations regarding corrosion and build-up, the end of the
measuring range should not be chosen any closer than A(see Fig.) to the tip of the
antenna.
•The smallest possible measuring range Bdepends on the antenna version (see Fig.).
•The tank diameter should be greater than D(see Fig.), the tank height at least H
(see Fig.).
•Depending on its consistence, foam can either absorb microwaves or reflect them off
the foam surface. Measurement is possible under certain conditions.
L00-FMR2xxxx-17-00-00-en-017
A [mm/inch] B [m/inch] C [mm/inch] D [m/inch] H [m/ft]
FMR 231 50 / 2 > 0.5 / > 20 150...300/6...12 > 1 / > 40 > 1,5 / > 5
100%
0%
B
A
C
H
ØD

Micropilot M FMR 231 with HART/4...20 mA Mounting
Endress + Hauser 17
Measuring range
The usable measuring range depends on the size of the antenna, the reflectivity of the
medium, the mounting location and eventual interference reflections. The maximum
configurable range is 20 m (65 ft) for all Micropilot M (larger ranges up to 35 m (114 ft)
on request).
The following tables describe the groups of media as well as the achievable measuring
range as a function of application and media group. If the dielectric constant of a
medium is unknown, it is recommended to assume media group B to ensure a reliable
measurement.
Measuring range depending on vessel type, conditions and product for
Micropilot M FMR 231
Product class DK (εr) Examples
A1,4...1,9 non-conducting liquids, e.g. liquefied gas1)
1) Treat Ammonia NH3 as a medium of group A, i.e. use FMR 230 in a stilling well.
B1,9...4 non-conducting liquids, e.g. benzene, oil, toluene, …
C4...10 e.g. concentrated acids, organic solvents, esters, aniline, alcohol,
acetone, …
D> 10 conducting liquids, e.g. aqueous solutions, dilute acids and alkalis
Product class Storage tank
Calm product surface
(e.g. intermittent filling,
filling from bottom,
immersion tubes).
Buffer tank
Moving surfaces
(e.g. continuous filling,
from above, mixing jets).
Process tank with
agitator
Turbulent surface.
Single stage agitator <60
RPM.
Stilling well Bypass
Measuring range Measuring range Measuring range Measuring range Measuring range
FMR 231: Rod antenna Rod antenna Rod antenna Rod antenna Rod antenna
ADK(εr)=1,4...1,9 to use a stilling well (20 m / 67 ft) or Wave Guide antenna1(3.8 m /12.5 ft)
Use FMR 230,
FMR 240,
FMR 244
resp. FMR 245
Use FMR 230,
FMR 240,
FMR 244
resp. FMR 245
BDK(εr)=1,9...4 10 m 5 m 4 m
CDK(εr)=4...10 15 m 7,5 m 6 m
DDK(εr)>10 20 m 10 m 8 m
1) In the event of horizontal stress, mechanical support is required or provide the Wave Guide antenna with a protective pipe.

Mounting Micropilot M FMR 231 with HART/4...20 mA
18 Endress + Hauser
3.4 Installation instructions
3.4.1 Mounting kit
In addition to the tool needed for flange mounting, you will require the following tool:
•4 mm/0.1" Allen wrench for turning the housing.
3.4.2 Installation in tank (free space)
Optimum mounting position
L00-FMR231xx-17-00-00-en-001
Standard installation
For installations in a stilling well, follow the engineering hints on Page 14 and note the
following points:
•Marker is aligned towards tank wall.
•The marker is always exactly in the middle between two bolt-holes in the flange.
•After mounting, the housing can be turned 350° in order to simplify access to the
display and the terminal compartment.
•The inactive part of the rod antenna must extend below the nozzle.
•The rod antenna must be aligned vertically.

Micropilot M FMR 231 with HART/4...20 mA Mounting
Endress + Hauser 19
L00-FMR231xx-17-00-00-en-002
Material PPS PTFE
Antenna length [mm / inch] 360 / 14 510 / 20 390 / 15 540 / 21
H [mm/inch] < 100 / < 4 < 250 / < 10 < 100 / < 4 < 250 / < 10

Mounting Micropilot M FMR 231 with HART/4...20 mA
20 Endress + Hauser
3.4.3 Turn housing
After mounting, the housing can be turned 350° in order to simplify access to the display
and the terminal compartment. Proceed as follows to turn the housing to the required
position:
•Undo the fixing screws (1)
•Turn the housing (2) in the required direction
•Tighten up the fixing screws (1)
L00-FMR2xxxx-17-00-00-en-010
3.5 Post-installation check
After the measuring instrument has been installed, perform the following checks:
•Is the measuring instrument damaged (visual check)?
•Does the measuring instrument correspond to the measuring point specifications
such as process temperature/pressure, ambient temperature, measuring range, etc.?
•Is the flange marking correctly aligned? (→Page 10)
•Have the flange screws been tightened up with the respective tightening torque?
•Are the measuring point number and labeling correct (visual check)?
•Is the measuring instrument adequately protected against rain and direct sunlight
(→Page 59)?
1
1
22
F12 / F23 housing T12 housing
allen key
4 mm/0.1”