Endress+Hauser micropilot M FMR 231 User manual

micropilot
FMR 231
Microwave
Level Measurement
Operating Instructions
ENDRESS+HAUSER
MICROPILOT II
IP 65
Order Code:
Ser.-No.:
Messbereich
Measuring range
U16...36VD
C
4...20 mA
max. 20 m
Madein Germany Maulburg
T>70°C :
At >85°C
ENDRESS+HAUSER
MICROPILOTII
IP 65
Order Code:
Ser.-No.:
Messbereich
Measuring range
U16...36VD
C
4...20 mA
max. 20 m
Madein Germany Maulburg
T>70°C :
At >85°C
BA 171F/00/en/06.01
Software version 2.0
017479-1000
Hauser+Endress
The Power of Know How

Short Instructions
Note!
•The datum point for the empty distance "E" is always the lower face of the process
connection.
•The full distance "F" can extend up to the tip of antenna.
•For stilling wells see Chapter 6.2
Calibration with VU 330
or remote operation for
buffer and storage tanks
Note!
➀Check installation
1. Check that the alignment mark points
to the tank wall, see also Chapter 2.1.
➁Calibration
1. Reset
V9H5 = 333
2. Empty and full calibration
V0H1 = E
V0H2 = F
V0H3 = A (application parameter)
A = 0: Tanks up to 7 m
A = 1: Tanks up to 1.5 m
A = 2: Tanks up to 7 m, εr<10
A = 3: Tanks from 7 m to 20 m
3. False echo suppression
Tank empty ( ≤ E)!
V3H0 = 4
V3H1 = (E – 0,8 m)
For partially full tanks see Chapter 6.1.
➂Check echo quality
1. Echo qualitity
Observe when filling tank
V3H2 ≥10 dB
Measurement in order
V3H2 < 10
Measurement not in order:
Optimise alignment, see Chapter 7.5.
Try different nozzle position,
see Chapter 2.1.
flange tank wall
alignment
mark points
to tank wall
nozzlemin.
30 cm from
wall
thread
F
E
100%
20mA
0%
4mA
V H
V3H2 >10:
Short Instructions Micropilot FMR 231
Endress+Hauser

TableofContents
NotesonSafety...........3
1Introduction ............5
1.1 Measurement principle......6
1.2 Measuringsystem........8
2Installation.............9
2.1 Mountingina tank........9
2.2 Mountinginstillingwells......12
2.3 Protectivecover.........13
3Connection.............14
3.1 Wiringexamples.........15
4Operation .............16
4.1 On-site operation ........16
4.2 Remoteoperation........18
5On-sitecalibrationwithoutdisplay
VU330...............21
6CalibrationwithDisplay/Remote
Operation .............23
6.1 Basic calibration for tanks.....24
6.2 Basic calibration for bypasspipes
and stillingwells: ........26
6.3 Linearisation..........28
6.4 Analogueoutput.........31
6.5 Safetyfunctions.........32
6.6 Locking/unlocking the matrix....33
6.7 Measuringpointinformation....34
7Trouble-Shooting ..........35
7.1 Self-monitoring .........35
7.2 Error messages.........36
7.3 Faultanalysis..........37
7.4 Applicationparameter ......39
7.5 Echo quality ..........40
7.6 Falseechosuppression......41
7.7 Windowsuppression.......42
7.8 Plausibility...........42
7.9 Simulation ...........43
7.10Reset.............44
8Maintenance andRepair .......45
8.1 Maintenance ..........45
8.2 Repairs ............45
8.3 Spare parts...........46
9Technical Data ...........49
9.1 Dimensions...........52
9.2 Deratingdiagrams........53
9.3 Productstructure FMR231E....54
9.4 Productstructure FMR231A....55
10 OperatingMatrix ..........56
10.1Matrixoperation.........56
10.2HART.............57
Index ...............58
Micropilot FMR231 Table of Contents
Endress+Hauser 1

Software History
Software
version Manual version Device/ Software
No.
Software revision Changes in manual
1.0 02.98 2310 Original software operable with
Commuwin II, from software version
1.41
HART handheld from software
version 1.11 with DD version 1.0
2.0 11.98 2320 Improvement of evaluation
algorithms
Introduction of matrix field V8H6,
plausibility
Operable via Commuwin II,
software version 2.0
HART handheld from software
version 1.11 with DD version 1.0
No effect on operation
Plausibility described in Chapter 7.8
No visible effects on operation
Bypass pipe application removed,
Chapters 2 and 6 revised
An up/download of device data between devices with different software versions is not possible without special
software tools.
Micropilot FMR 231 Software History
2 Endress+Hauser

Notes on Safety
Approved usageThe Micropilot FMR 231 is a compact level transmitter designed for continuous,
non-contact level measurement of liquids, pastes and slurries.
The operating frequency of 5.8 GHz lies in a frequency band approved for industrial use.
FCC approved devices operate at 6.3 GHz. Its low pulse power of 1 mW (1 µW ERP)
allows safe installation in metallic and non-metallic vessels, with no risk to humans or the
environment.
Installation,
commissioning,
operation
The Micropilot FMR 231 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.
Explosion hazardous
areas
If the device is to be installed in an explosion hazardous area, then the specifications in
the certificate as well as all national and local regulations must be observed. The
instrument can be delivered with the certificates listed in the table below. The certificate
can be identified from the first letter of the order code stamped on the nameplate.
•Ensure that all personnel are suitably qualified
•Observe the specifications in the certificate as well as national and local
regulations.
•Switch off the power before opening the T12 housing in explosion hazardous
areas. The display module is stowed in a separate housing (EEx ia) which can be
opened when the Micropilot is in operation.
FCC approvalThis 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. In addition, the device may be used in metal vessels only.
Changes or modifications not expressly approved by the party responsible for
compliance could void the user's authority to operate the equipment.
Code Certificate Protection Housing
A none none F12
1 PTB ATEX II 1/2 G EEx ia IIC T3...T6 F12
2 PTB ATEX II 1/2 G EEx e m [ia] T3...T6 T12
K TIIS Ex ia IIC T3 F12
R none none F12 (FCC approval)
S FM IS Cl. I, Div. 1, Group A-D F12 (FCC approval)
T FM XP Cl. I, Div. 1, Group A-D T12 (FCC approval)
U CSA IS Cl. I, Div. 1, Group A-D F12
V CSA XP Cl. I, Div. 1, Group A-D T12
Table S.1
Certificates for use in explosion
hazardous areas
FCC approved devices operate
at 6.3 GHz and are for USA only
ENDRESS+HAUSER
MICROPILOT FMR 231
Order No. FMR 231-
Micropilot FMR 231 Notes on Safety
Endress+Hauser 3

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 icon in
the margin.
Safety conventions
Explosion protection
Electrical symbols
Symbol Meaning
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
Caution!
Caution highlights actions or procedures which, if not performed correctly, may lead to
personal injury or incorrect functioning of the instrument
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
Device 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 in accordance with the specifications in the certificate or in a safe 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 stiill 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
Note!
Caution!
Warning!
Notes on Safety Micropilot FMR 231
4 Endress+Hauser

1 Introduction
ApplicationThe Micropilot FMR 231 is a loop-powered transmitter. It is used to for continuous
non-contact level measurement of liquids, pastes and sludges. It is suitable for use in:
•storage tanks, buffer tanks and stilling wells
with few internal fittings and where the product surface is generally calm. Changes of
product, temperature gradients, inert gas blankets or vapours do not influence the
measurement.
VersionsThe various Micropilot FMR 231 versions result from the combinations between antenna
type, inactive length and the process connection. Table 1.1 summarises them. The
product structure is described in Chapter 9.
BA171Y05
➀➁
BA171Y06
Fig.1.1
➀ Storage tank
➁ Stilling well or bypass pipe
Application Standard, for tanks and stilling wells Hygienic, corrosive-resistant, for tanks
and stilling wells
Housing Housing F12 (standard/EEx ia/Ex IS) or housing T12 (standard/EEx e/Ex XP)
Antenna type PPS antenna PTFE antenna
Inactive length 100 mm/250 mm
Process connection Thread 1½ BSPT (R 1½) or 1½ NPT, PVDF
Flange DN50/80/100150/ or ANSI/JIS equivalent
Sanitary coupling: dairy, Tri-clamp or aseptic
Cladding uncladded cladded or uncladded
Pressure/
flange temperature 0...16 bar
–20°C...+120°C
0...16 bar with cladded flange
0...40 bar uncladded flange
–40°C...+150°C
Wetted parts PPS, Viton O-ring,
1.4435 flange/thread
Uncladded: PTFE und 1.4435
flange/thread
Cladded: PTFE only
PPS = Polyphenylene sulphide
Table 1.1
Micropilot FMR 231 versions
Micropilot FMR 231 Chapter 1 Introduction
Endress+Hauser 5

1.1 Measurement principle
Micropilot is a "downward looking" time-of-flight system which measures the distance
from the probe mounting (top of the tank) to the surface of the process medium.
Short microwave pulses are beamed by the antenna towards the product, reflected by
its surface and detected by the same arrangement.
An inactive length at the start of the rod antenna delays the launch of the pulse for a
distance of 100 mm or 250 mm, ensuring that condensation or build-up in the mounting
nozzle does not affect the measurement.
Input The reflected microwaves are detected by the antenna and passed on to the electronics.
Here a microprocessor evaluates the signal and identifies the echo produced by the
reflection of the beam at the product surface. The algorithms used for signal processing
are based on many years of experience in time-of-flight measurement.
The distance D to the product surface is proportional to the time-of-flight of the microwave
pulse t:
D = c • t/2
where c is the speed of propagation
Since the empty distance E is known to the system, it is a simple matter to calculate the
level L:
L = E – D
The datum point for "E" is the bottom face of the process connection.
Micropilot has an echo suppression function which can be activated by the user. This
prevents interference echoes, e.g. caused by fittings within the beam, from being
interpreted as the level echo.
Output Micropilot is calibrated by entering the empty distance E, the full distance F and an
application parameter, which automatically tunes the instrument to the measuring
conditions.
For versions with current output, the points "E" and "F" correspond to 4 mA and 20 mA,
for digital outputs and the display to 0% and 100% level.
F
ED
BA171Y06
datum point
beam
launched
here
inactive
length
datum point
max.level
Fig.1.2
Microwave measurement
principle
Chapter 1 Introduction Micropilot FMR 231
6 Endress+Hauser

A linearisation function, based on a manually or semi-automatically entered table, can
be activated locally at the display unit or via the foreign system interface. This allows
measurement in customer units and provides a linear output current for spherical vessels,
horizontal cylinders and tanks with conical outlet.
AccuracyThe accuracy of Micropilot FMR 231 is dependent upon the set measuring range and
material being measured, see Technical Data. Under reference conditions it is capable
of measuring to an accuracy of ±15 mm up to a measuring range of 10 m and ±0.15%
of the range end-value of measuring ranges from 10 m to 20 m..
Measuring rangeThe measuring range depends upon the conditions in the tank and the product to be
measured. Table 1.2 describes the product classes, Table 1.3 the measuring range as
a function of the application and measuring conditions.
In order to ensure the highest accuracy for Class B, we recommend that
•the empty distance "E" should be 30 cm above the tank bottom.
Class A products can be measured in bypass pipes using the FMR 230V horn antenna,
see operating manual BA 197F.
Product class Examples
A Non-conducting liquids, e.g. propane, buthane etc.
Dielectric constant εr. 1.4...1.9
B Non-conducting liquids, e.g. petrochemicals, benzine, oil, toluol, etc.
Dielectric constant εrapprox. 1,9...4
C E.g. concentrated acids, organic solvents, analine, esters, alcohols, acetone, etc.
oil/water mixtures
Dielectric constant εrapprox. 4...10
D Conducting liquids, watery solutions, dilutte acids and alkalis,
Dielectric constant εr> 10 or electrical conductivity σ>10mS/cm
Table 1.2
Selection of product class
Product
Class Strorage tank Buffer tank Stilling well or bypass pipe
Measuring range
Measuring range Measuring range DN 50 DN 80
B10 m 33 ft 5 m 16 ft 10 m 33 ft 20 m 67 ft
C15 m 50 ft 8 m 25 ft 10 m 33 ft 20 m 67 ft
D20 m 67 ft 10 m 33 ft 10 m 33 ft 20 m 67 ft
Table 1.3
Measuring range as a function of
application
Micropilot FMR 231 Chapter 1 Introduction
Endress+Hauser 7

1.2 Measuring system
4...20 mA with HART Version with passive 4...20 mA current
output and superimposed HART digital
signal.
•Can be operated either on-site or
remotely with the HART handheld
DXR 275.
•Alternatively, a personal computer,
Commuwin II and Commubox FXA 191
can be used.
•Loop-power is provided by a PLC or
power supply unit.
System integration via
Rackbus Several Micropilot transmitters (or other
devices with HART output) can be linked to
a supervisory bus system with a gateway
ZA.
•One FXN 672 interface module is
required for each transmitter.
•Gateways are available for MODBUS,
PROFIBUS, FIP, INTERBUS etc..
•Both on-site and remote operation are
possible, e.g. with Commuwin II (CW II).
IO
VH
+
VH
BA171Y11
DXR
275
4...20 mA
with HART
PLC
loop power
Commubox
with laptop
operating
and display
module
VU 330
FXN 671
mA1
+
FXN 671
mA1
+
VH
+
VH
ZA 672 ZA 672
BA171Y11
FXN
672
4...20 mA with HART
PLCPC with
CW II
operating
and display
module
VU 330
busRS 232C
Gateway to
MODBUS, FIP,
PROFIBUS,
INTERBUS etc..
Chapter 1 Introduction Micropilot FMR 231
8 Endress+Hauser

2 Installation
2.1 Mounting in a tank
General notes
The microwaves should arrive unhindered
at the product surface.
•Every object within the beam gives an
echo. The nearer the object, the
stronger the echo.
•Strong echoes which cannot be
avoided by selecting a different
mounting position interfere with the
measurement and must be suppressed
during calibration.
Beam cone
Distance Radius r Distance Radius r
5 m 1 m 16 ft 3ft
10 m 2 m 33 ft 6 ft
15 m 3 m 50 ft 9 ft
20m 4m 67ft 12ft
Alignment
When installed, the alignment mark to be
found on the flange or threaded connection
of the Micropilot should point towards the
tank wall.
•Distance from tank wall min. 30 cm
The alignment can be optimised using
V3H2 as described in Chapter 7.5.
Ambient temperature
The ambient temperature of the housing
must be within the following limits, see also
Chapter 9.
•Housing F12:
standard operation: –40°C...80°C
EEx ia T6 –40°C...50°C*
•Housing T12:
standard operation: –40°C...80°C
EEx e T6 –40°C...50°C*
*For full details see certificate.
A protective cover is available for outdoor
mounting, Part No. 543199-0001.
BA171Y16
Fittings within
the beam cause
false echoes
23°
r
BA171Y17
tank wall
if possible,
clearance
greater than
30 cm
alignment
mark points to
tank wall
flange
thread
BA171Y21
Use a protective cover when
mounting outdoors
Micropilot FMR 231 Chapter 2 Installation
Endress+Hauser 9

Mounting position The ideal mounting position is as follows:
•not in the middle of the tank
•not above the filling stream
•no fittings in beam
•avoid vibration, direct high-pressure
cleaning and lateral loads.
min. 30 cm
BA171Y72
A decentral
position avoids
double echoes
BA171Y71
A central
position
strengthens
double echoes
BA171Y73
A position away
from the filling
stream will avoid
interference
echoes
Echos from
fittings are
suppressed
during
calibraatrion
BA171Y74
A position above
the filling stream
will be subject to
interference
echoes
It is not possible
to measure in
tanks with
stirrers
BA171Y76
If the nozzle is too
long, noise will
reduce the signal
quality
BA171Y75
Use either a
longer antenna
or a shorter
nozzle –
see page 11 for
details
Chapter 2 Installation Micropilot FMR 231
10 Endress+Hauser

Caution!
•Applications in hazardous areas: electrostatic charging, e.g. rubbing clean, must be
avoided for standard PTFE and PTFE-clad antennas.
•Always tighten the locking screw, since this connects the antenna to the ground
potential of the housing.
Nozzle
•There is no restriction on nozzle
diameter provided that the length is
less than or equal to the inactive length.
•Max. nozzle length hmax
100 mm for 100 mm inactive length,
250 mm for 250 mm inactive length.
•The alignment mark on the flange
should point towards the tank wall.
•After mounting, the housing can be
turned through 350° for convenient
access to the display and connection
compartment. The locking screw must
be loosened before turning.
•
Tighten the locking screw after turning.
Threaded connection
•The hexagonal nut (AF 60) is used to
screw the transmitter in position.
•Use e.g. a PTFE tape to seal the
process connection.
•The alignment point on the threaded
connection should point towards the
tank wall.
•After mounting, the housing can be
turned through 350° for convenient
access to the display and connection
compartment. The locking screw must
be loosened before turning.
•
Tighten the locking screw after turning.
BA171Y18
ground terminal
locking screw
datum point of
measurement
hmax
100 mm
or
250 mm
beam
launched
here
mark points to
tank wall
max.level
use spring
washers for
cladded
flange
inactive length
BA171Y19
mark points to
tank wall
max.level
datum point of
measurement
locking screw
ground terminal
sealing tape
hmax
100 mm
or
250 mm
beam
launched
here
inactive length
Caution!
Micropilot FMR 231 Chapter 2 Installation
Endress+Hauser 11

2.2 Mounting in stilling wells
Installation Mount the antenna perpendicular and in
the centre of the well.
•Slight unevenness of the well surface or
light build-up do not influence the
measurement
•Measurements also possible through
open ball valves.
•The alignment mark to be found on the
flange should point towards the slots.
•After mounting, the housing can be
turned through 350° for convenient
access to the display and connection
compartment. The locking screw must
be loosened before turning.
•
Tighten the locking screw after turning. .
Stilling well design To ensure highest accuracy, the stilling well
should be designed as follows.
•Metal construction
•Constant diameter.
•If possible, welding seam along axis of
slots.
•Slots offset at 180° (not 90°), deburred
•Slot width max. 1/10 of pipe diameter.
The length and number of slots has no
effect on the measurement.
Ambient temperature The ambient temperature of the housing
must be within the following limits, see also
Chapter 9.
•Housing F12:
standard operation: –40°C...80°C
EEx ia T6 –40°C...50°C*
•Housing T12:
standard operation: –40°C...80°C
EEx e T6 –40°C...50°C*
*For full details see certificate.
A protective cover is available for outdoor
mounting, Part No. 543199-0001.
BA171Y77
inactive
length
100 mm
or
250 mm
locking screw
datum point for
measurement
alignment mark
pointing towards
the slots
spring
washer
for
cladded
flange
beam
launched
here
ground terminal
max.level
d
BA171Y22
if possible
welded along
axis of slots
slots offset
by 180°
slot width
max.1/10 of
pipe diameter
BA171Y21
Use a protective cover when
mounting outdoors
Chapter 2 Installation Micropilot FMR 231
12 Endress+Hauser

2.3 Protective cover
A protective cover is available for outdoor mounting, Part No. 543199-0001. The scope
of delivery comprises the cover and clamping ring.
ENDRESS+HAUSER
MICROPILOT II
ENDRESS+HAUSER
MICROPILOT II
IP 65
IP 65
Order Code:
Ser.-No.:
Order Code:
Ser.-No.:
Messbereich
Measuring range
Messbereich
Measuring range
U16...36VDC
4...20 mA
U 16...36 V DC
4...20 mA
max. 20 m
max. 20 m
Madein Germany Maulburg
T>70°C :
At >85°C
T >70°C:
At >85°C
BA171Y78
clamping ring
protective cover
Micropilot FMR 231 Chapter 2 Installation
Endress+Hauser 13

3 Connection
General notes The Micropilot is a loop-powered transmitter with 4...20 mA analogue output and
superimposed HART signal. Note the following before connecting up:
•The power supply rating must correspond to that on the nameplate.
•Turn off the power before connecting up.
•Connect the external ground terminal of the transmitter to the plant grounding
system before connecting up.
•Always tighten the locking screw, since this connects the antenna to the ground
potential of the housing.
Hazardous areas If the measuring system is to be installed in a hazardous area, local regulations, national
guidelines and the specifications in the certificate are to be observed.The specified cable
gland must be used.
For certified transmitters, the explosion protection is realised as follows:
•Housing F12: EEx ia.
The power supply must be intrinsically safe.
•Housing T12: EEx e m.
The housing must be integrated into the plant grounding system.
The power must be switched off before the connection compartment is opened.
The electronics and current output are galvanically isolated from the antenna circuit.
Connection Connect up the Micropilot as follows:
•Switch off power.
•Unscrew lid of housing or connection compartment.
•For F12 housing: If appropriate, remove VU 330.
Remove cover plate to connection compartment.
•Pull out terminal module with plastic loop.
•Thread cable through cable gland or conduit
•Connect up, see wiring examples.
•Push terminal module back into place.
•For F12 housing: Screw cover plate to connection compartment
If appropriate, stow away VU 330.
•Screw on housing or connection compartment lid and screw cable gland or
conduit tight.
•Switch on power.
Caution!
1234
–+–+
1234
ENDRESS+HAUSER
MICROPILOT II
Order Code: FMR231-CEGGJ1A1A
Ser.-No.: PIZ0187 IP 65
EEx ia Messbereich max.20 m
Measuring range
PN max 15 bar
T max. 150°C
antenna
BZT G133
414J
T < 80°C
A
U 16...30 DC
4...20 mA
Cable gland
Nameplate
external
ground
terminal
Connection compartment
behind cover plate –
loosen screws BA171Y23
2nd cable entry
Operating elements in
display compartment
ground
terminal
HousingT12Housing F12
2x cable entries
at the rear
Fig.3.1
Micropilot connection
compartments and nameplate
Warning!
Chapter 3 Connection Micropilot FMR 231
14 Endress+Hauser

3.1 Wiring examples
The following figures show wiring examples for typical applications: In general:
•If possible, ground both ends of the signal line screening. If this is not possible,
ground at the sensor side only.
•In hazardous areas, the signal line may be grounded at the sensor side only.
Observe the instructions in the certificate.
4...20 mA with HART
Use screened, twisted pairs.
•Min. load for HART 250 Ω
•Max. load:
Housing F12: 1100 Ω, for EEx ia 820 Ω
Housing T12: 750 Ω, for EEx e 750 Ω.
•Power
(load dependent, see Chapter 9.2.)
Housing F12
standard 16...36 VDC
EEx ia 16...30 VDC
Housing T12
standard 16...30 VDC
EEx e 16...30 VDC
System integration via
4...20 mA with HART
System Integration via interface FXN 672
and Rackbus gateway ZA 67x.
•Power: supplied by FXN 672
Screened, twisted pairs are recommended
for the loop-power line.
1234
L- L+ I+ I-
BA171Y24
optional PLC
with active
output
power
plant
ground
DXR 275
or
FXA 191
communication
resistor
test sockets
(via interlock
diode)
Caution!
1
d4
ZA 67x
FXN 672
d2
234
L- L+ I+ I-
BA171Y25
plant
ground
Rackbus
Micropilot FMR 231 Chapter 3 Connection
Endress+Hauser 15

4 Operation
4.1 On-site operation
For the F12 housing, the operating elements are located within the transmitter housing
and can be operated when the cover is open. The T12 housing has a separate display
compartment which also can be opened in hazardous areas. The Micropilot has four
keys and an LED.
•The LED flashes when an entered value is registered as well as during the
suppression of interference echoes. During operation it remains off.
•The device keys allow the basic calibration of the Micropilot, but are deactivated
when the operating and display module VU 330 is connected.
Operation without the
VU 330 The function of the device keys when the operating and display module is not connected
is summarised in the table below. The two keys must always be pressed simultaneously.
The keys are used as follows, see Chapter 5:
Terminal
V H
V+H
–+–+
BA171Y26
bargraph
(current output/edho quality)
indicator
communication
fault
Operating and display module VU 330
matrix position
green LED
device
operating
keys measured
not present with housing
T12
Fig.4.1
Operating elements of
Micropilot FMR 231
Keys Function
Reset to factory settings, see Chapter 7.9
Empty calibration, see Chapter 5
Full calibration, see Chapter 5
False echo suppression, see Chapter 5
Lock parameter entry, see Chapter 5
Unlock parameter entry, see Chapter 5
++
__
Chapter 4 Operation Micropilot FMR 231
16 Endress+Hauser

Operation with the
VU 330
If the Micropilot is equipped with an operating and display module VU 330, then it is
operated via a 10 x 10 operating matrix.
•Each row is allocated to a particular function,
•Each field sets or displays one parameter.
On-site operation with the operating and display module and communication both access
the same matrix. This is to be found in Chapter 10. If the HART handheld DXR 275 is
used, the transmitter is operated by a menu which is derived from this matrix.
The table below summarises the key functions of the operating and display module
VU 330.
V
H
VH
+
VH
V+H
BA171Y27
Fig.4.2
Matrix operation using the
operating and display module
VU 330
Keys Function
Selection of matrix field
Selection of vertical matrix position
Selection of horizontal matrix position
and When V and H are pressed simultaneously the display springs to V0H0
Parameter entry
or Activates selected matrix position. The selected digit flashes.
Changes the value of the flashing digit by +1
Changes the value of the flashing digit by –1
and Sets the parameter just entered back to its original value, provided it has not
already been registered
Registration of the entry
or or
and
Registration of the entry and quitting of the matrix field
Registration of entry and jump to field V0H0
and or
and
+and V lock entries,
–and H unlock entries, see Section 6.7
V
V
V
V
V
Micropilot FMR 231 Chapter 4 Operation
Endress+Hauser 17

4.2 Remote operation
The Micropilot can be remotely operated via the communication interface 4...20 mA with
HART.
For HART, the operation depends on the measuring system.
•For computer operation via Commubox FXA 191 or FXN 672 and gateway, the
operating matrix is used, see page 17.
•For operation via handheld, a menu is used.
HART handheld DXR 275 The operation of the HART handheld DXR 275 is described in the manual supplied with
it.
The Group Select menu calls the matrix. The rows are the menu headers. Parameters
are set in the roll-down menus.
•Keys , navigate up and down the menu.
•Keys , change to the previous or to the following menu.
•Parameters are entered by the corresponding keys.
– SEND registers the entries
•Keys F1 - F4 call the displayed functions, e.g. HOME.
In the procedures described in this manual, the DXR 275 menu lines appear in the
"significance" column. Chapter 10 contains a listing of menu positions with corresponding
matrix fields.
Note!
•The HART device description Version 2.0 for Micropilot FMR 231 must be loaded in
the DXR 275 before the device can be operated by the handheld. Updates of the
device descriptions can be obtained from Endress+Hauser.
IO
FMR 231:LIC0001
Online
1 >Group Select
2PV 8.7m
HELP
BA171Y28
parameter entry keys
LC display with
menu texts
menu selection
keys
function keys
Fig.4.3
Operating elements and key
functions of the HART handheld
DXR 275
F1 F4F2 F3
FMR231: LIC0001
Online
2 PV 8.7m
HELP
1->Group Select
F1 F4F2 F3
FMR231 : LIC0001
2 Linearisation
3 Ext. Calibration
4 Service
5 Operating mode
Group Select
1->Calibration
HOME
F1 F4F2 F3
FMR231: LIC0001
3 Full Calibration
4 Application Parameter
5 Output Damping
Calibration
1 Measured Value
2->Empty Calibration
HOME
BA171Y29
Note!
Chapter 4 Operation Micropilot FMR 231
18 Endress+Hauser