Endress+Hauser Micropilot M FMR244 User manual

BA250F/00/en/05.06
Nr. 52012494
Valid as of software version:
V 01.04.00 (amplifier)
V 1.0 (communication)
Operating Instructions
Micropilot M FMR244
Level-Radar
9

Brief operating instructions Micropilot M FMR244 with FOUNDATION Fieldbus
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 96.
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 FMR244 with FOUNDATION Fieldbus Table of contents
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.3 Certificates and approvals . . . . . . . . . . . . . . . . . . . . 8
2.4 Registered trademarks . . . . . . . . . . . . . . . . . . . . . . . 8
3 Mounting . . . . . . . . . . . . . . . . . . . . . . . 9
3.1 Quick installation guide . . . . . . . . . . . . . . . . . . . . . . 9
3.2 Incoming acceptance, transport, storage . . . . . . . . . 10
3.3 Installation conditions . . . . . . . . . . . . . . . . . . . . . . 11
3.4 Installation instructions . . . . . . . . . . . . . . . . . . . . . 18
3.5 Post-installation check . . . . . . . . . . . . . . . . . . . . . . 21
4 Wiring . . . . . . . . . . . . . . . . . . . . . . . . 22
4.1 Quick wiring guide . . . . . . . . . . . . . . . . . . . . . . . . 22
4.2 Connecting the measuring unit . . . . . . . . . . . . . . . 25
4.3 Recommended connection . . . . . . . . . . . . . . . . . . 25
4.4 Degree of protection . . . . . . . . . . . . . . . . . . . . . . . 25
4.5 Post-connection check . . . . . . . . . . . . . . . . . . . . . . 25
5 Operation . . . . . . . . . . . . . . . . . . . . . . 26
5.1 Quick operation guide . . . . . . . . . . . . . . . . . . . . . . 26
5.2 Display and operating elements . . . . . . . . . . . . . . . 28
5.3 Local operation . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
5.4 Display and acknowledging error messages . . . . . . 34
5.5 FOUNDATION Fieldbus communication . . . . . . . . 35
6 Commissioning. . . . . . . . . . . . . . . . . . 52
6.1 Function check . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
6.2 Switching on the measuring device . . . . . . . . . . . . 52
6.3 Basic Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
6.4 Basic Setup with the VU 331 . . . . . . . . . . . . . . . . . 55
6.5 Basic Setup with the ToF Tool . . . . . . . . . . . . . . . . 67
7 Maintenance. . . . . . . . . . . . . . . . . . . . 72
8 Accessories. . . . . . . . . . . . . . . . . . . . . 73
9 Trouble-shooting . . . . . . . . . . . . . . . . 76
9.1 Trouble-shooting instructions . . . . . . . . . . . . . . . . 76
9.2 System error messages . . . . . . . . . . . . . . . . . . . . . . 77
9.3 Application errors . . . . . . . . . . . . . . . . . . . . . . . . . 79
9.4 Orientation of the Micropilot . . . . . . . . . . . . . . . . . 81
9.5 Spare parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
9.6 Return . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
9.7 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
9.8 Software history . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
9.9 Contact addresses of Endress+Hauser . . . . . . . . . . . 89
10 Technical data . . . . . . . . . . . . . . . . . . . 90
10.1 Additional technical data . . . . . . . . . . . . . . . . . . . . 90
11 Appendix. . . . . . . . . . . . . . . . . . . . . . . 96
11.1 Operating menu Foundation Fieldbus, ToF Tool . . . 96
11.2 Description of functions . . . . . . . . . . . . . . . . . . . . . 98
11.3 Function and system design . . . . . . . . . . . . . . . . . . 99
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

Safety instructions Micropilot M FMR244 with FOUNDATION Fieldbus
4Endress+Hauser
1 Safety instructions
1.1 Designated use
The Micropilot M FMR 244 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 26 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 standards and 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 FMR244 with FOUNDATION Fieldbus 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.
Safety conventions
#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
Explosion protection
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
Electrical symbols
%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
Temperature resistance of the connection cables
States, that the connection cables must be resistant to a temperature of at least 85 °C.
t >85°C

Identification Micropilot M FMR244 with FOUNDATION Fieldbus
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-003
Fig. 1: Information on the nameplate of the Micropilot M with Foundation Fieldbus (example)
2.1.2 Ordering structure
Ordering structure Micropilot M FMR 244
10 Approval:
A Non-hazardous area
F Non-hazardous area, WHG
2 ATEX II 1/2 G EEx ia IIC T6, XA, IECEx Zone 0/1
Note safety instruction (XA) (electrostatic charging)!
7 ATEX II 1/2 G EEx ia IIC T6, WHG, XA, IECEx Zone 0/1
Note safety instruction (XA) (electrostatic charging)!
5 ATEX II 1/2 G EEx d [ia] IIC T6, XA, IECEx Zone 0/1
Note safety instruction (XA) (electrostatic charging)!
G ATEX II 3 G EEx nA II T6
H ATEX II 1/2G EEx ia IIC T6, ATEX 3D, XA,
Note safety instruction (XA) (electrostatic charging)!
S FM IS - Cl.I Div.1 Gr. A-D
T FM XP - Cl.I Div.1 Group A-D
N CSA General Purpose
U CSA IS - Cl.I Div.1 Group A-D
V CSA XP - Cl.I Div.1 Group A-D
K TIIS EEx ia IIC T4
L TIIS EEx d [ia] IIC T4
YSpecialversion
20 Antenna:
2 40mm/1-1/2"
9 Special version
30 Antenna seal; Temperature:
V FKM Viton GLT; -40°C…130°C/-40°F…266°F
Y Special version
FMR 244- Product designation (part 1)

Micropilot M FMR244 with FOUNDATION Fieldbus Identification
Endress+Hauser 7
Ordering structure Micropilot M FMR 244 (continued)
40 Process connection:
– Threaded boss –
GGS Thread ISO228 G1-1/2, PVDF
GNS Thread ANSI NPT1-1/2, PVDF
YY9 Special version
50 Output; Operation:
A 4-20mA HART; 4-line display VU331, envelope curve display on site
SIL2, IEC61508/IEC61511-1
B 4-20mA HART; w/o display, via communication
SIL2, IEC61508/IEC61511-1
K 4-20mA HART; Prepared for FHX40, remote display (Accessory)
SIL2, IEC61508/IEC61511-1
C PROFIBUS PA; 4-line display VU331, envelope curve display on site
D PROFIBUS PA; w/o display, via communication
L PROFIBUS PA; Prepared for FHX40, remote display (Accessory)
E FOUNDATION Fieldbus; 4-line display VU331, envelope curve display on site
F FOUNDATION Fieldbus; w/o display, via communication
M FOUNDATION Fieldbus; Prepared for FHX40, remote display (Accessory)
Y Special version
60 Housing:
A F12 Alu, coated IP65 NEMA4X
C T12 Alu, coated IP65 NEMA4X, separate conn. compartment
D T12 Alu, coated IP65 NEMA4X, separate conn. compartment, OVP=overvoltage protection
Y Special version
70 Cable entry:
2 Gland M20 (EEx d > thread M20)
3ThreadG1/2
4ThreadNPT1/2
5PlugM12
6 Plug 7/8"
9 Special version
80 Additional option:
A Basic version
S GL/ABS/NK marine certificate
YSpecialversion
FMR 244- Complete product designation

Identification Micropilot M FMR244 with FOUNDATION Fieldbus
8Endress+Hauser
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 10!
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) for all Endress+Hauser devices wich are
operable using ToF Tool
– CD 2: ToF Tool - FieldTool®Documentation
Documentation for all Endress+Hauser devices wich are operable using ToF Tool)
• 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 CD-
ROM.
2.3 Certificates and approvals
CE mark, declaration of conformity
The device 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 device complies with the applicable
standards and regulations as listed in the EC declaration of conformity and thus complies with the
statutory requirements of the EG directives. Endress+Hauser confirms the successful testing of the
device 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
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
Foundation™ Fieldbus
Registered trademark of Fieldbus Foundation Austin, Texas, USA

Micropilot M FMR244 with FOUNDATION Fieldbus Mounting
Endress+Hauser 9
3Mounting
3.1 Quick installation guide
L00-FMR244xx-17-00-00-en-001
3
1
3
1
2
2
#
90°
90°
90°
90°
90°
90°
90°
90°
9
90°90°
60
90°90°
F12 housing
T12 housing
Turn housing
Observe orientation when installing!
Installation in tank (free space):
Mark on process connector facing the nearest tank wall!
Installation in stilling well:
Mark on process connector pointed towards the slots or vent holes!
The housing can be turned 350°
in order to simplify access to the
display and the terminal compartment
Allen key
4 mm / 0.1"
max. torque 0.5 Nm
G 1½”
or
1½ NPT
G 1½”
or
1½ NPT
mark at threaded boss
mark at threaded boss
AF 60
max. torque
20 Nm
Caution!
Tighten instrument only
at the threaded boss.
F12 or T12 housing

Mounting Micropilot M FMR244 with FOUNDATION Fieldbus
10 Endress+Hauser
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.

Micropilot M FMR244 with FOUNDATION Fieldbus Mounting
Endress+Hauser 11
3.3 Installation conditions
3.3.1 Dimensions
Housing dimensions
L00-F12xxxx-06-00-00-en-001
L00-T12xxxx-06-00-00-en-001
ENDRESS+HAUSER
65 78
max. 110
85
150
Ø 129
(Aluminium)
F12 housing
ENDRESS+HAUSER
78
85
65
162
max. 100 94
Ø 129
(Aluminium)
T12 housing

Mounting Micropilot M FMR244 with FOUNDATION Fieldbus
12 Endress+Hauser
Micropilot M FMR 244 - process connection, type of antenna
L00-FMR244xx-06-00-00-en-005
147
Ø39
Ø 71.5
84.5
62.5
39
PVDF
Threaded connection
G 1 ½” or 1 ½ NPT
PTFE (FDA-listed TFM 1600)
F12 / T12 housing

Micropilot M FMR244 with FOUNDATION Fieldbus Mounting
Endress+Hauser 13
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 15 cm (6“) 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 73).
L00-FMR2xxxx-17-00-00-xx-008
1
234
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"
• Stilling well: a stilling well respectively a
Wave Guide antenna can always be used to
avoid interference.
• Metallic screens (3) mounted at a slope spread
the radar signals and can, therefore, reduce
interference echoes.
Please contact Endress+Hauser for further infor-
mation.
L00-FMR2xxxx-17-00-00-xx-009
1
3
2
a

Mounting Micropilot M FMR244 with FOUNDATION Fieldbus
14 Endress+Hauser
Measurement in a plastic tank
If the outer wall of the tank is made of a non-conductive material (e.g. GRP), microwaves can also
be reflected off interfering installations outside the signal beam (e.g. metallic pipes (1), ladders (2),
grates (3), …). Therefore, there should be no such interfering installations in the signal beam.
L00-FMR2xxxx-17-00-00-xx-013
Please contact Endress+Hauser for further information.
VH
00
VH
00
Endress+Hauser
Endress+Hauser
-+
VH
ENDRESS+HAUSER
MICROPILOTII
IP65
OrderCode:
Ser.-No.:
Messbereich
Measuringrange
U16...36VDC
4...20mA
max.20m
MadeinGermany Maulburg
MadeinGermany Maulburg
T>70°C:
At>85°C
VH
00
VH
00
Endress+Hauser
Endress+Hauser
-+
VH
ENDRESS+HAUSER
MICROPILOTII
IP65
OrderCode:
Ser.-No.:
Messbereich
Measuringrange
U16...36VDC
4...20mA
max.20m
MadeinGermany Maulburg
MadeinGermany Maulburg
T>
70°C:
At>85°C
VH
00
VH
00
Endress+Hauser
Endress+Hauser
-+
VH
ENDRESS+HAUSER
MICROPILOTII
IP65
OrderCode:
Ser.-No.:
Messbereich
Measuringrange
U16...36VDC
4...20mA
max.20m
MadeinGermany Maulburg
MadeinGermany Maulburg
T>
70°C:
At>85°C
1
2
3

Micropilot M FMR244 with FOUNDATION Fieldbus 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 size
(horn diameter)
FMR 244
40 mm / 1½"
L00-FMR2xxxx-14-00-06-de-027
Beam angle α23°
Measuring
distance (D)
Beam diameter (W)
40 mm / 1½"
3 m / 10 ft 1.22 m / 4.07 ft
6 m / 20 ft 2.44 m / 8.14 ft
9 m / 30 ft 3.66 m / 12.21 ft
a
D
W
a
D
_
=2
2..
tan
W

Mounting Micropilot M FMR244 with FOUNDATION Fieldbus
16 Endress+Hauser
Measuring conditions
L00-FMR2xxxx-17-00-00-de-009
• 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.
• For Wave Guide antennas, the end of the pipe is the begin of the measuring range.
• 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 (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 Fig.)
above the tank bottom in these applications.
• In principle it is possible to measure up to the tip of the antenna with FMR230/231/240.
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.
For FMR244/245, the end of measuring range should not be chosen closer than A(see Fig.) to
the tip of the antenna, especially if there is development of condensate.
• 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.).
Note!
•Incaseofboiling surfaces, bubbling or tendency for foaming, use FMR230 or FMR231.
Depending on its consistence, foam can either absorb microwaves or reflect them off the foam
surface. Measurement is possible under certain conditions.
• In case of heavy steam development or condensate the max. measuring range of FMR240 may
decrease depending on density, temperature and composition of the steam →use FMR230 or
FMR231.
• For the measurement of absorbing gases such as ammonia NH3or some fluorocarbons 1)),
please use FMR230 in a stilling well.
1) Affected compounds are e.g. R134a, R227, Dymel 152a.
100%
0%
B
A
C
H
ØD
A [mm/inch] B [m/inch] C [mm/inch] D [m/inch] H [m/inch]
FMR244 150 / 6 > 0,2 / > 8 50...150 / 2...6 > 0,2 / > 8 > 0,3 / > 12

Micropilot M FMR244 with FOUNDATION Fieldbus 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:
•20m(65ft)forMicropilotMFMR23x/24x(larger ranges up to 35 m (114 ft) on request),
• 70 m (229 ft) for Micropilot M FMR250 (further informations see TI390F/00/en).
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 244
Media group DC (εr) Examples
A1,4...1,9 non-conducting liquids, e.g. liquefied gas1))
1) Treat Ammonia NH3as a medium of group A, i.e. use FMR230 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
Measuring range Measuring range Measuring range Measuring range
FMR 244 (horn dia): 40 mm / 1½" 40 mm / 1½" 40 mm / 1½" 40 mm / 1½"
ADK(εr)=1,4...1,9 to use a stilling well (20 m / 65 ft) or Wave Guide antenna1)) (3.8 m /12.5 ft) 20 m / 65 ft
BDK(εr)=1,9...4 3 m / 10 ft 2 m / 7 ft 1 m / 3 ft 20 m / 65 ft
CDK(εr)=4...10 6 m / 20 ft 3 m / 10 ft 1.5 m / 5 ft 20 m / 65 ft
DDK(εr)>10 9 m / 30 ft 5 m / 16 ft 2 m / 7 ft 20 m / 65 ft
1) In the event of horizontal stress (e.g. agitators), mechanical support is required or provide the Wave Guide antenna with a protective pipe (maximum lateral
load 100 Nm).

Mounting Micropilot M FMR244 with FOUNDATION Fieldbus
18 Endress+Hauser
3.4 Installation instructions
3.4.1 Mounting kit
Beside a key AF 60 for installation you need 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-FMR244xx-17-00-00-en-003
90°
90°
90°
90°
90°
90°
90°
90°
9
90°90°
60
mark at threaded boss
G 1½”
or
1½ NPT
AF 60
max. torque
20 Nm
Caution!
Use only the
threaded boss
Standard installation
When mounting in a tank, please observe
engineering hints on Page 13 and the following
points:
• Marker is aligned towards tank wall.
• Install the device using the threaded boss (AF
60) only. Observe the max. torque of 20 Nm.
• After mounting, the housing can be turned
350° in order to simplify access to the display
and the terminal compartment.
• For optimum measurement, the horn antenna
should extend below the nozzle. Nozzle
heights up to 500 mm can be accepted if this
should not be possible due to mechanical
reasons.
Note!
Please contact Endress+Hauser for application
with higher nozzle.
• The antenna must be aligned vertically.
L00-FMR244xx-17-00-00-de-002
H
ØD
Antenna size 1½" / 40 mm
D [mm/inch] 39 / 1.5
H [mm/inch] < 85 / < 3.4

Micropilot M FMR244 with FOUNDATION Fieldbus Mounting
Endress+Hauser 19
3.4.3 Installation in stilling well
Optimum mounting position
L00-FMR244xx-17-00-00-en-004
Standard installation
For installations in a stilling well, follow the engineering hints on Page 13 and note the following
points:
• Marker is aligned toward slots.
• Install the device using the threaded boss (AF 60) only. Observe the max. torque of 20 Nm.
• After mounting, the housing can be turned 350° in order to simplify access to the display and the
terminal compartment.
• Measurements can be performed through an open full bore ball valve without any problems.
Recommendations for the stilling well
At the construction of a stilling well, please note the following points:
• Metal (no enamel coating, plastic coating on request).
• Constant diameter.
• Stilling well diameter not larger than antenna diameter.
• Weld seam as smooth as possible and on the same axis as the slots.
• Slots offset 180° (not 90°).
• Slot width respectively diameter of holes max. 1/10 of pipe diameter, de-burred. Length and
number do not have any influence on the measurement.
• At any transition (i.e. when using a ball valve or mending pipe segments), no gap may be created
exceeding 1 mm.
• The stilling well must be smooth on the inside (average roughness Rz ≤6.3 µm). Use extruded
or parallel welded stainless steel 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.
90°90°
60
mark at threaded boss
G 1½”
or
1½ NPT
AF 60
max. torque
20 Nm
Caution!
Use only the
threaded boss

Mounting Micropilot M FMR244 with FOUNDATION Fieldbus
20 Endress+Hauser
Examples for the construction of stilling wells
L00-FMR244xx-17-00-00-en-005
100 %
0 %
Micropilot M
FMR 244
threaded connection
G 1½" or 1½ NPT
marker
inside of
holes deburred
< 1/10 Ø pipe
stilling well
with slots
full bore
ball valve
< 1/10 Ø pipe
gap
1 mm
0.04”
£
£
150…500 mm
6”…20”
Diameter of o of ball valve must always
be equivalent to pipe diameter.
Avoid edges and constrictions.
pening