Endress+Hauser Micropilot M FMR250 User manual

BA284F/00/en/08.06
71030747
Valid as of software version:
01.05.00
Operating Instructions
Micropilot M FMR250
Level-Radar
6

Micropilot M FMR250 with HART/4...20 mA
2Endress+Hauser
Brief overview
For quick and simple commissioning:
Safety Instructions
Explanation of the warning symbols
You can find special instructions at the appropriate position in the chapter in
question. The positions are indicated with the icons Warning #, Caution "and
Note !.
→Page 6 ff.
Æ
Installation
The steps for installing the device and installation conditions (e.g. dimensions)
can be found here.
→Page 11 ff.
Æ
Wiring
The device is virtually completely wired on delivery. →Page 25 ff.
Æ
Display and Operating Elements
An overview of the position of the display and operating elements can be found
here.
→Page 33 ff.
Æ
Commissioning
In the "Commissioning" section, you learn how to switch on the device and
check the functioning.
→Page 43 ff.
Æ
Commissioning via Display VU 331
In the "Operating" section, you become familiar with the operating elements
and the various setting options.
Basic Setup with the VU331.
→Page 31 ff.
→Page 46 ff.
Æ
Commissioning via Operating Software ToF Tool
Basic Setup with the ToF Tool.
Additional information on the operation of the ToF Tool can be found in the
operating instructions BA224F/00, which can be found on the enclosed
CD-ROM.
→Page 61 ff.
Æ
Fault Tracking / Trouble Shooting
If faults occur during operation, use the checklist to localise the cause.
Here you can find measures you can take yourself to take remedial action
against the fault.
→Page 69 ff.
Æ
Index
You can find important terms and keywords on the individual sections here.
Use the keyword index to find quickly and efficiently the information you need.
→Page 96 ff.

Micropilot M FMR250 with HART/4...20 mA
Endress+Hauser 3
Brief operating instructions
L00-FMR250xx-19-00-00-en-020
!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 90.
The operating manual BA291F/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
+
-
E
E
-
… …
…
KA235F/00/a2/08.06
52025245
…
20 mA
100%
4mA
0%
D
L
F
E
52025245
Micropilot M FMR240/244/245/250 - Brief operating instructions
- dome
ceiling
- horizontal
cyl.
- bypass
…
- unknown
- metal silo
- concrete
silo
- bin / bunker
…
- liquid
- solid
- unknown
- DC: <1.9
- DC: 1.9 … 4
-DC:4…10
- DC: >10
- standard
- calm
surface
- add.
agitator
…
input E
(see sketch)
input E
(see sketch)
input F
(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
002
tank
shape
00A
vessel /
silo
004
process
cond.
005
empty
calibr.
005
empty
calibr.
006
full
calibr.
006
full
calibr.
007
pipe
diameter
008
dist./
meas value
051
check
distance
003
medium
cond.
00B
medium
cond.
00C
proscess
cond.
052
range of
mapping
053
start
mapping
008
dist./
meas value
- envel. curve
- incl. FAC
- incl. cust. map
- single curve
- cyclic
= 100: unlocked
100: locked≠
0E1
plot settings
0E2
recording
curve
0A1
previous error
0A4
unlock parameter
HART
}
Contrast: +or +
- unknown
- DC: 1.6...1.9
- DC: 1.9 …2.5
- DC: 2.5 …4
...
- standard
- fast change
- slow change
- test: no filter flange:
reference point of
measurement
threaded
connection
1½” (R1
:
reference point of
measurement
BSPT ½”)
or 1½ NPT
001
media
type
= 2457: unlocked
2457: locked≠PA, FF
}
Solid Liquid

Micropilot M FMR250 with HART/4...20 mA
4Endress+Hauser

Micropilot M FMR250 with HART/4...20 mA Table of contents
Endress+Hauser 5
Table of contents
1 Safety instructions . . . . . . . . . . . . . . . . 6
1.1 Designated use . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.2 Installation, commissioning and operation . . . . . . . . 6
1.3 Operational safety . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.4 Notes on safety conventions and symbols . . . . . . . . . 7
2 Identification . . . . . . . . . . . . . . . . . . . . 8
2.1 Device designation . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.2 Scope of delivery . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.3 Certificates and approvals . . . . . . . . . . . . . . . . . . . 10
2.4 Registered trademarks . . . . . . . . . . . . . . . . . . . . . . 10
3 Installation . . . . . . . . . . . . . . . . . . . . . 11
3.1 Quick installation guide . . . . . . . . . . . . . . . . . . . . . 11
3.2 Incoming acceptance, transport, storage . . . . . . . . . 11
3.3 Installation conditions . . . . . . . . . . . . . . . . . . . . . . 12
3.4 Installation instructions . . . . . . . . . . . . . . . . . . . . . 19
3.5 Post-installation check . . . . . . . . . . . . . . . . . . . . . . 24
4 Wiring . . . . . . . . . . . . . . . . . . . . . . . . 25
4.1 Quick wiring guide . . . . . . . . . . . . . . . . . . . . . . . . 25
4.2 Connecting the measuring unit . . . . . . . . . . . . . . . 27
4.3 Recommended connection . . . . . . . . . . . . . . . . . . 30
4.4 Degree of protection . . . . . . . . . . . . . . . . . . . . . . . 30
4.5 Post-connection check . . . . . . . . . . . . . . . . . . . . . . 30
5 Operation . . . . . . . . . . . . . . . . . . . . . . 31
5.1 Quick operation guide . . . . . . . . . . . . . . . . . . . . . . 31
5.2 Display and operating elements . . . . . . . . . . . . . . . 33
5.3 Local operation . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
5.4 Display and acknowledging error messages . . . . . . 39
5.5 HART communication . . . . . . . . . . . . . . . . . . . . . . 40
6 Commissioning. . . . . . . . . . . . . . . . . . 43
6.1 Function check . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
6.2 Switching on the measuring device . . . . . . . . . . . . 43
6.3 Basic Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
6.4 Basic Setup with the VU331 . . . . . . . . . . . . . . . . . 46
6.5 Basic Setup with the Endress+Hauser
oprating program . . . . . . . . . . . . . . . . . . . . . . . . . . 61
7 Maintenance. . . . . . . . . . . . . . . . . . . . 65
8 Accessories. . . . . . . . . . . . . . . . . . . . . 66
9 Trouble-shooting . . . . . . . . . . . . . . . . 69
9.1 Trouble-shooting instructions . . . . . . . . . . . . . . . . 69
9.2 System error messages . . . . . . . . . . . . . . . . . . . . . . 70
9.3 Application errors in liquids . . . . . . . . . . . . . . . . . . 72
9.4 Application errors in solids . . . . . . . . . . . . . . . . . . . 74
9.5 Orientation of the Micropilot . . . . . . . . . . . . . . . . . 76
9.6 Spare parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
9.7 Return . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
9.8 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
9.9 Software history . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
9.10 Contact addresses of Endress+Hauser . . . . . . . . . . . 84
10 Technical data . . . . . . . . . . . . . . . . . . . 85
10.1 Additional technical data . . . . . . . . . . . . . . . . . . . . 85
11 Appendix. . . . . . . . . . . . . . . . . . . . . . . 90
11.1 Operating menu HART (display modul), ToF Tool . 90
11.2 Description of functions . . . . . . . . . . . . . . . . . . . . . 92
11.3 Function and system design . . . . . . . . . . . . . . . . . . 93
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96

Safety instructions Micropilot M FMR250 with HART/4...20 mA
6Endress+Hauser
1 Safety instructions
1.1 Designated use
The Micropilot M FMR250 is a compact level radar for the continuous, contactless measurement of
predominantly solids. 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 FMR250 with HART/4...20 mA Safety instructions
Endress+Hauser 7
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 FMR250 with HART/4...20 mA
8Endress+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 FMR250
10 Approval:
A Non-hazardous area
1 ATEX II 1/2G EEx ia IIC T6
4 ATEX II 1/2G EEx d [ia] IIC T6
G ATEX II 3G EEx nA II T6
B ATEX II 1/2GD EEx ia IIC T6, Alu blind cover
C ATEX II 1/2G EEx ia IIC T6, ATEX II 1/3D
D ATEX II 1/2D, Alu blind cover
E ATEX II 1/3D
S FM IS-Cl.I/II/III Div.1 Gr.A-G
T FM XP-Cl.I/II/III Div.1 Gr.A-G
N CSA General Purpose
U CSA IS-Cl.I/II/III Div.1 Gr.A-G
V CSA XP-Cl.I/II/III Div.1 Gr.A-G
Y Special version
20 Antenna:
4 Horn 80mm/3"
5 Horn 100mm/4"
6 Parabolic 200mm/8"
9 Special version
FMR250- Product designation (part 1)

Micropilot M FMR250 with HART/4...20 mA Identification
Endress+Hauser 9
Ordering structure Micropilot M FMR250 (continued)
30 Antenna seal; Temperature:
E FKM Viton GLT; -40...200°C/-40...392 °F
Y Special version
40 Antenna extension:
1 Not selected
2 250mm/10"
3 450mm/18"
9 Special version
50 Process connection:
GGJ Thread DIN2999 R1-1/2, 316L
GNJ Thread ANSI NPT1-1/2, 316L
X3J UNI flange DN200/8"/200A, 316L
max PN1/14.5lbs/1K, compatible DN200 PN10/16, 8" 150lbs, 10K 200A
XCJ Top target pos., UNI DN100/4"/100A, 316L
max PN1/14.5lbs/1K, compatible DN100 PN10/16, 4" 150lbs, 10K 100A
XEJ Top target pos., UNI DN200/8"/200A, 316L
max PN1/14.5lbs/1K, compatible DN200 PN10/16, 8" 150lbs, 10K 200A
CMJ DN80 PN10/16 B1, 316L flange EN1092-1 (DIN2527 C)
CQJ DN100 PN10/16 B1, 316L flange EN1092-1 (DIN2527 C)
ALJ 3" 150lbs RF, 316/316L flange ANSI B16.5
APJ 4" 150lbs RF, 316/316L flange ANSI B16.5
KLJ 10K 80A RF, 316L flange JIS B2220
KPJ 10K 100A RF, 316L flange JIS B2220
YY9 Special version
60 Output; Operation:
A 4-20mA HART; 4-line display VU331, envelope curve display on site
B 4-20mA HART; w/o display, via communication
K 4-20mA HART; prepared for FHX40, remote display (Accessory)
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)
Y Special version
70 Housing:
A F12 Alu, coated IP65 NEMA4X
B F23 316L IP65 NEMA4X
C T12 Alu, coated IP65 NEMA4X, separate connection compartment
D T12 Alu, coated IP65 NEMA4X + OVP, separate connection compartment,
OVP = overvoltage protection
Y Special version
80 Cable entry:
2 Gland M20x1.5 (EEx d > thread M20)
3ThreadG1/2
4ThreadNPT1/2
9 Special version
90 Additional option:
K Air purge connection G1/4
M Air purge connection NPT1/4
Y Special version
FMR250- Complete product designation

Identification Micropilot M FMR250 with HART/4...20 mA
10 Endress+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 11!
The scope of delivery consists of:
• Assembled instrument
• Endress+Hauser oprating program (on the enclosed CD-ROM
• 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
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

Micropilot M FMR250 with HART/4...20 mA Installation
Endress+Hauser 11
3 Installation
3.1 Quick installation guide
L00-FMR250xx-17-00-00-en-011
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.
DN80…200
ANSI 3…8”
33
11
22
#
90°
90°
90°
90°
90°
90°
90°
90°
9
90°90°
F12/F23 housing T12 housing
Turn housing
At mounting adjust the marking at the instrument flange!
Installation in vessel (free space):
Mark on process connector facing the nearest vessel wall!
The housing can be turned 350° in order to simplify access to the
display and the terminal compartment
Allen key 4 mm / 0.1"
1½” BSPT (R 1½”),
or
1½ NPT
mark at instrument flange
or threaded boss
Note!
At version with top target positioner, the marker is at the housing adapter
(opposite the air purge connection).

Installation Micropilot M FMR250 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
Ø 129
(Aluminium)
F12 housing
ENDRESS+HAUSER
78
85
65
162
max. 100 94
Ø 129
(Aluminium)
T12 housing
max. 94 104
Ø 129
150
40
(316L)
F23 housing

Micropilot M FMR250 with HART/4...20 mA Installation
Endress+Hauser 13
Micropilot M FMR250 - process connection, type of antenna
L00-FMR250xx-06-00-00-en-005
L
L
L
L
50
50
135
40
135
135
135
50
50
Ød
Ød
40
27 27
Ød
75
75
Ød
250/450
250/450
75
211
80mm/3” 200mm/8”
95 197
282
1)
195
100mm/4”
b [mm] b [mm]b [mm]
DN 80 DN 803”
20 1823.9
200 185190.5
L [mm] L [mm]
d [mm] d[mm]
D [mm] D [mm]D[mm]
220 210228.6
20 1823.9
DN 100 DN 1004”
ØD Ø340 Ø 225 (DN100)
340 (DN200)Ø
43
b
8
8
23
Ø60
Ø60
Ø60
Ø60
Parabolic antennaHorn antenna
for 10K
Flange
Flange to JIS B2220
for 150 lbs
Flange
Flange to ANSI B16.5
for PN10/16
1) 430 mm (from 28.11.2005)
Antenna size Antenna size
Horn antenna Parabolic antenna
Flange
Flange to EN 1092-1 (agreeable to DIN 2527)
F12 / T12 / F23 housing
Threaded connection
BSPT (R 1 ½”)
or 1 ½ NPT
1½” Flange DN80…100
or equivalent
E+H UNI flange DN 200 Alignment unit with
E+H UNI flange DN 100/200

Installation Micropilot M FMR250 with HART/4...20 mA
14 Endress+Hauser
E+H UNI flange
The number of bolts has sometimes been reduced. The bolt-holes have been enlarged for adaption
of dimensions, therefore, the flange needs to be properly aligned to the counterflange before the
bolts are tightened.
L00-FMR250xx-06-00-00-en-006
Top target positioner with E+H UNI flange
L00-FMR250xx-06-00-00-en-007
175
4x90°
4x90°
225
Ø 19
Ø 23
A
A
A
A
A-A
8
340
4x90°
6x60°
Ø 26
Ø 26
E+H UNI flange DN100
compatible with:
- DN100 PN10/16,
- ANSI 4" 150 lbs,
- JIS 10K 100A
E+H UNI flange DN200
compatible with:
- DN200 PN10/16,
- ANSI 8" 150 lbs,
- JIS 10K 200A
material: 316L
M80x1.5
185.5
294.5
A
A-A
A
±15°
8
40
Ø 85
E+H UNI flange
DN100/DN200
clamping screw
3 x M8 shifty at 120°
Viton seal

Micropilot M FMR250 with HART/4...20 mA Installation
Endress+Hauser 15
3.3.2 Engineering hints
Orientation
• Recommended distance (1) wall – outer
edge of nozzle: ~1/6 of vessel diameter.
However, the device should not, under any
circumstances, be mounted less than 20 cm/
8“ from the vessel wall.
Note!
If the tank wall is not smooth (corrugated
metal, welding seams, irregularities etc.) the
distance from the wall should be kept as large
as possible. If necessary, use an alignment unit
to prevent interference reflections from the
tank wall.
• 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 66).
• In extremely dusty applications, the
integrated air purge connection can prevent
clogging of the antenna.
L00-FMR250xx-17-00-00-xx-003
1
234
Vessel installations
• Avoid any installations (1), like limit switches,
struts, etc., inside the signal beam (refer to
beam angle see "" on ).
• Symmetrical installations (2), i.e. reinforcing
rings, heating coils, 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"
• In devices with top target positioner, the
sensor can be optimally aimed within the
vessel and/or interference reflections can be
avoided.
The max. angle βis ±15°.
• In particular, sensor alignment serves to:
– prevent interference reflections
– extend the maximum possible measuring
range in conical outlets.
• Metallic screens (3) mounted at a slope spread
the radar signals and can, therefore, reduce
interference echoes. L00-FMR250xx-17-00-00-xx-002
Please contact Endress+Hauser for further information.
1
2
a
b
3

Installation Micropilot M FMR250 with HART/4...20 mA
16 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-FMR250xx-17-00-00-xx-014
Please contact Endress+Hauser for further information.
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:
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
23
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
Antenna size
FMR250
Horn antenna Parabolic antenna
L00-FMR2xxxx-14-00-06-de-027
80 mm (3") 100 mm (4") 200 mm (8")
Beam angle α10° 8° 4°
Measuring
distance (D)
Beamwidth diameter (W)
80 mm (3") 100 mm (4") 200 mm (8")
5 m (16 ft) 0.87 m (2.80 ft) 0.70 m (2.24 ft) 0.35 m (1.12 ft)
10 m (32 ft) 1.75 m (5.60 ft) 1.40 m (4.48 ft) 0.70 m (2.23 ft)
15 m (49 ft) 2.62 m (8.57 ft) 2.10 m (6.85 ft) 1.05 m (3.42 ft)
20 m (65 ft) 3.50 m (11.37 ft) 2.80 m (9.09 ft) 1.40 m (4.54 ft)
30 m (98 ft) 5.25 m (17.15 ft) 4.20 m (13.71 ft) 2.10 m (6.84 ft)
40 m (131 ft) 7.00 m (22.92 ft) 5.59 m (18.32 ft) 2.79 m (9.15 ft)
50 m (164 ft) 8.75 m (28.70 ft) 6.99 m (22.94 ft) 3.50 m (11.45 ft)
a
D
W
a
D
_
=2
2..
tan
W

Micropilot M FMR250 with HART/4...20 mA Installation
Endress+Hauser 17
Measuring conditions
• The measuring range begins, where the beam hits the vessel bottom. Particularly with dish
bottoms or conical outlets the level cannot be detected below this point.
The maximum measuring range can be increased in such applications by using an alignment unit
(see Page 15).
• In case of media with a low dielectric constant (groups A and B), the vessel 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=50...150 mm above the vessel bottom
(see Fig.).
• In principle it is possible to measure up to the tip of the antenna with FMR250. However, due to
considerations regarding abrasion and build-up, the end of the measuring range should not be
chosen any closer than A=400 mm (see Fig.) to the tip of the antenna.
L00-FMR250xx-17-00-00-en-001
100%
0%
A
C
Measuring range

Installation Micropilot M FMR250 with HART/4...20 mA
18 Endress+Hauser
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 70 m
(229 ft) for Micropilot M FMR250.
To achieve an optimised Signal strength it is recommended to use an antenna with as large as
possible diameter (DN200/8" parabolic antenna, DN100/4" horn).
Reduction of the max. possible measuring range through:
• Media with poor reflection properties (= small DC). For examples refer to table 1.
• Angle of repose.
• Extremely loose surfaces of bulk solids, e.g. bulk solids with low bulk weight for pneumatic filling.
• Build-up, above all of moist products.
Table 1:
The following table describes the media groups and the dielectric constant εr.
The respective lower group applies for very loose or loosened bulk solids.
Media group DC (εr) Examples Signal attenuation
A1.6...1.9
– Plastic granulate
– White lime, special cement
–Sugar
19...16 dB
B1.9...2.5 – Portland cement, plaster 16...13 dB
C2.5...4
– Grain, seeds
–Groundstones
–Sand
13...10 dB
D4...7 – Naturally moist (ground) stones, ores
–Salt 10...7 dB
E>7
– Metallic powder
– Carbon black
–Coal
< 7 dB

Micropilot M FMR250 with HART/4...20 mA Installation
Endress+Hauser 19
3.4 Installation instructions
3.4.1 Mounting kit
For the mounting , you will require the following tool:
• The tool for flange mounting or
• a key AF60 for threaded boss and
• 4 mm/0.1" Allen wrench for turning the housing.
3.4.2 Installation in vessel (free space)
Optimum mounting position
L00-FMR250xx-17-00-00-en-009
90°
90°
90°
90°
90°
90°
90°
90°
9
DN80…200
ANSI 3…8”
90°
1½” BSPT (R 1½”)
or
1½ NPT
marker at instrument
flange or threaded boss
1)
1)
at version with top target positioner, the marker is at the housing adapter
(opposite the air purge connection)

Installation Micropilot M FMR250 with HART/4...20 mA
20 Endress+Hauser
Standard installation FMR250 with horn
antenna
• Observe installation instructions on Page 15.
• Marker is aligned towards vessel 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 horn antenna should protrude from the
nozzle.
If this is not possible for mechanical reasons,
larger nozzle heights can be accepted.
Note!
Please contact Endress+Hauser for application
with higher nozzle.
•Vertical horn antenna.
Ideally, the horn antenna should be installed
vertically.
To avoid interference reflections or for
optimum alignment within the vessel, the
FMR250 with optional top target positioner
can be swiveled by 15° in all directions.
L00-FMR250xx-17-00-00-en-004
H
ØD
Antenna size 80 mm / 3" 100 mm / 4"
D [mm / inch] 75 / 3 95 / 3.7
H [mm / inch]
(without antenna extension) < 260 / < 10.2 < 330 / < 12.9 1))
1) from 28.11.2005: H < 480 mm / 18.8 inch