Endress+Hauser Deltabar FMD71 User manual

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Brief Operating Instructions
Deltabar FMD71, FMD72
Level measurement with electronic differential
pressure
Electronic differential pressure transmitter with
ceramic and metal sensors
These Instructions are Brief Operating Instructions; they are
not a substitute for the Operating Instructions pertaining to
the device.
Detailed information about the device can be found in the
Operating Instructions and the other documentation.
Available for all device versions via
• Internet: www.endress.com/deviceviewer
• Smart phone/tablet: Endress+Hauser Operations App
KA01105P/00/EN/05.15
71281267

Deltabar FMD71, FMD72
2 Endress+Hauser
TAG No.: XXX000
Ser. No.: X000X000000
Order code 00X00-XXXX0XX0XXX
www.endress.com/deviceviewer Endress+Hauser Operations App
Serial number
A0023555

Deltabar FMD71, FMD72 Table of contents
Endress+Hauser 3
Table of contents
1 Document information ........................................................... 4
1.1 Document function .................................................................... 4
1.2 Symbols used ........................................................................ 4
1.3 Documentation ....................................................................... 6
1.4 Terms and abbreviations ................................................................ 7
1.5 Registered trademarks .................................................................. 9
2 Basic safety instructions ......................................................... 9
2.1 Requirements concerning the staff ......................................................... 9
2.2 Designated use ....................................................................... 9
2.3 Workplace safety ..................................................................... 10
2.4 Operational safety .................................................................... 10
2.5 Product safety ....................................................................... 11
3 Product description ............................................................. 11
3.1 Product design ...................................................................... 11
4 Incoming acceptance and product identification ................................. 12
4.1 Incoming acceptance .................................................................. 12
4.2 Product identification ................................................................. 14
4.3 Nameplates ......................................................................... 14
4.4 Storage and transport ................................................................. 17
5 Installation ..................................................................... 18
5.1 Mounting dimensions ................................................................. 18
5.2 Mounting location .................................................................... 18
5.3 Orientation ......................................................................... 18
5.4 General installation instructions .......................................................... 18
5.5 Thermal insulation - FMD71 high-temperature version ........................................ 18
5.6 Installing the sensor modules ............................................................ 19
5.7 Mounting sensor modules with PVDF installation coupling ...................................... 20
5.8 Installing the transmitter ............................................................... 20
5.9 Closing the housing covers .............................................................. 20
5.10 Seal for flange mounting ............................................................... 21
5.11 Post-installation check ................................................................. 21
6 Electrical connection ............................................................ 22
6.1 Connecting the sensor module LP to the sensor module HP ...................................... 22
6.2 Connecting the sensor module HP to the transmitter .......................................... 23
6.3 Connecting the measuring unit .......................................................... 25
6.4 Connection conditions ................................................................. 27
6.5 Connection data ..................................................................... 27
6.6 Post-connection check ................................................................. 27
7 Operation options .............................................................. 28
7.1 Operation without an operating menu ..................................................... 28
7.2 Operation with an operating menu ........................................................ 30
7.3 Structure of the operating menu .......................................................... 31
7.4 Operating options .................................................................... 32
7.5 Operating the device using onsite display (optional) ........................................... 32
7.6 Operation using Endress+Hauser operating program .......................................... 35
7.7 Direct access to parameters ............................................................. 35
7.8 Locking/unlocking operation ............................................................ 35
7.9 Resetting to factory settings (reset) ....................................................... 35
8Integrating transmitter via HART® protocol ..................................... 35

Document information Deltabar FMD71, FMD72
4 Endress+Hauser
9 Commissioning ................................................................. 36
9.1 Post-installation check and function check .................................................. 36
9.2 Unlocking/locking configuration ......................................................... 36
9.3 Commissioning without an operating menu ................................................. 36
9.4 Commissioning with an operating menu .................................................... 38
9.5 Selecting the language ................................................................. 38
9.6 Measuring mode selection .............................................................. 39
9.7 Selecting the high-pressure side .......................................................... 39
9.8 Selecting the pressure engineering unit .................................................... 40
9.9 Pos. zero adjust ...................................................................... 40
9.10 Configuring level measurement .......................................................... 42
9.11 Linearization ........................................................................ 45
9.12 Configuring pressure measurement ....................................................... 45
1 Document information
1.1 Document function
The Brief Operating Instructions contain all the essential information from incoming
acceptance to initial commissioning.
1.2 Symbols used
1.2.1 Safety symbols
Symbol Meaning
DANGER
DANGER!
This symbol alerts you to a dangerous situation. Failure to avoid this situation will result in
serious or fatal injury.
WARNING
WARNING!
This symbol alerts you to a dangerous situation. Failure to avoid this situation can result in
serious or fatal injury.
CAUTION
CAUTION!
This symbol alerts you to a dangerous situation. Failure to avoid this situation can result in
minor or medium injury.
NOTICE
NOTE!
This symbol contains information on procedures and other facts which do not result in personal
injury.

Deltabar FMD71, FMD72 Document information
Endress+Hauser 5
1.2.2 Electrical symbols
Symbol Meaning Symbol Meaning
Direct current Alternating current
Direct current and alternating current Ground connection
A grounded terminal which, as far as
the operator is concerned, is grounded
via a grounding system.
Protective ground connection
A terminal which must be connected to
ground prior to establishing any other
connections.
Equipotential connection
A connection that has to be connected
to the plant grounding system: This
may be a potential equalization line or
a star grounding system depending on
national or company codes of practice.
1.2.3 Tool symbols
Symbol Meaning
A0011220
Flat blade screwdriver
A0011219
Phillips head screwdriver
A0011221
Allen key
A0011222
Open-ended wrench
1.2.4 Symbols for certain types of information
Symbol Meaning Symbol Meaning
Permitted
Procedures, processes or actions that
are permitted.
Preferred
Procedures, processes or actions that
are preferred.
Forbidden
Procedures, processes or actions that
are forbidden.
Tip
Indicates additional information.
Reference to documentation Reference to page

Document information Deltabar FMD71, FMD72
6 Endress+Hauser
Symbol Meaning Symbol Meaning
Reference to graphic
,… ,
Series of steps
Result of a sequence of actions Visual inspection
1.2.5 Symbols in graphics
Symbol Meaning
1, 2, 3 ... Item numbers
,… ,
Series of steps
A, B, C, ... Views
A-A, B-B, C-C, ... Sections
1.3 Documentation
The document types listed are available:
In the Download area of the Endress+Hauser website: www.endress.com → Download
1.3.1 Technical Information (TI): planning aid for your device
TI01033P:
The document contains all the technical data on the device and provides an overview of the
accessories and other products that can be ordered for the device.
1.3.2 Operating Instructions (BA): your comprehensive reference
BA01044P:
These Operating Instructions contain all the information that is required in various phases of
the life cycle of the device: from product identification, incoming acceptance and storage, to
mounting, connection, operation and commissioning through to troubleshooting,
maintenance and disposal.
1.3.3 Description of Device Parameters (GP): reference for your parameters
GP01013P:
The document provides a detailed explanation of each individual parameter in the operating
menu. The description is aimed at those who work with the device over the entire life cycle
and perform specific configurations.

Deltabar FMD71, FMD72 Document information
Endress+Hauser 7
1.3.4 Safety Instructions (XA)
Safety Instructions (XA) are supplied with the device depending on the approval. These
instructions are an integral part of the Operating Instructions.
Device Directive Documentation Option 1)
FMD71, FMD72 ATEX II 1/2G Ex ia IIC T6 Ga/Gb XA00619P BA
FMD71, FMD72 ATEX II 1/2G Ex d [ia] IIC T6 Ga/Gb XA00620P BC
FMD71, FMD72 ATEX II 3G Ex nA IIC T6 GC XA00621P BD
FMD71, FMD72 IEC Ex ia IIC T6 Ga/Gb XA00622P IA
FMD71, FMD72 IEC Ex d [ia] IIC T6 Ga/Gb XA00623P IB
FMD71, FMD72 CSA General Purpose - CD
FMD71, FMD72 NEPSI Ex ia IIC T4/T6 Ga/Gb XA01352P NA
FMD71, FMD72 NEPSI Ex d [ia] IIC T4/T6 Ga/Gb XA01352P NB
FMD71 FM C/US IS Cl.I Div.1 Gr.A-D, AEx ia, Zone 0,1,2 XA00628P FA
FMD71 FM C/US XP AIS Cl.I Div.1 Gr.A-D, Exd [ia] Zone 0,1,2 XA00629P FB
FMD71 CSA C/US XP Cl.I Div.1 Gr.A-D, Ex d [ia], Zone 0,1,2 XA00631P CB
FMD71 FM C/US NI Cl.I Div.2 Gr.A-D, Zone 2 XA00668P FD
FMD71 CSA C/US NI, Cl.I Div. 2, Gr.A-D Cl.I, Zone 2, IIC XA00670P CC
FMD71 CSA C/US IS Cl.I Div.1 Gr.A-D, Ex ia Zone 0,1,2 XA00630P CA
FMD72 CSA C/US IS Cl.I Div.1 Gr.A-D, Ex ia Zone 0,1,2 XA00626P CA
FMD72 CSA C/US XP Cl.I Div.1 Gr.A-D, Ex d [ia], Zone 0,1,2 XA00627P CB
FMD72 CSA C/US NI, Cl.I Div.2 Gr.A-D, Zone 2 XA00671P CC
FMD72 FM C/US IS Cl.I Div.1 Gr.A-D, AEx ia, Zone 0,1,2 XA00624P FA
FMD72 FM C/US XP AIS Cl.I Div.1 Gr.A-D, Exd [ia] Zone 0,1,2 XA00625P FB
FMD72 FM C/US NI Cl.I Div.2 Gr.A-D, Zone 2 XA00669P FD
1) Product Configurator order code for "Approval"
The nameplate provides information on the Safety Instructions (XA) that are relevant for
the device.
1.4 Terms and abbreviations
Term/abbreviation Explanation
XA Document type "Safety Instructions"
KA Document type "Brief Operating Instructions"
BA Document type "Operating Instructions"

Document information Deltabar FMD71, FMD72
8 Endress+Hauser
Term/abbreviation Explanation
SD Document type "Special Documentation"
PN Nominal pressure
MWP The MWP (maximum working pressure) for the individual
sensors depends on the lowest-rated element, with regard to
pressure, of the selected components, i.e. the process
connection must be taken into consideration in addition to
the measuring cell. Also observe pressure-temperature
dependency. For the relevant standards and additional
information, see the "Pressure specifications" section.
The MWP can also be found on the nameplate.
OPL The OPL (over pressure limit = sensor overload limit) for the
measuring device depends on the lowest-rated element, with
regard to pressure, of the selected components, i.e. the
process connection has to be taken into consideration in
addition to the measuring cell. Also observe pressure-
temperature dependency. For the relevant standards and
additional information, see the "Pressure specifications"
section.
LRL Lower range limit
URL Upper range limit
LRV Lower range value
URV Upper range value
TD Turn down
Set span and zero-based span.
½Lower range value (LRV) ½ < ½ Upper range value
(URV)½
Example with measuring cell
HP = 1 000 mbar (15 psi) and measuring cell
LP = 400 mbar (6 psi):
LRL = 400 mbar (6 psi):
• Lower range value (LRV) = –300 mbar (–4.35 psi)
• Upper range value (URV) = 0 mbar
• Nominal value (URL) = 1 000 mbar (15 psi)
Turn down:
TD = URL + ½LRL½/½ URV - LRV ½ 4.66:1
Set span:
URV – LRV = 300 mbar (4.35 psi)
This span is based on the zero point.
LRV URLURV LRL
1 = 2
3
4
5
A0016451
1 Set span
2 Zero-based span
3 Nominal value upper range limit (URL)
4 Nominal measuring range
5 Sensor measuring range

Deltabar FMD71, FMD72 Basic safety instructions
Endress+Hauser 9
1.5 Registered trademarks
1.5.1 HARTâ
Registered trademark of the HART Communication Foundation, Austin, USA
2 Basic safety instructions
2.1 Requirements concerning the staff
The staff must fulfill the following requirements for their tasks:
‣Trained staff: Must have a qualification which corresponds to their function and tasks.
‣Authorized by the plant operator.
‣Familiar with the national regulations.
‣Before starting their work: Must have read and understood all instructions in the operating
manual and supplementary documentation as well as the certificate (depending on the
application).
‣Must comply with all instructions and the regulatory framework.
2.2 Designated use
2.2.1 Application and media
The Deltabar FMD72 is a differential pressure transmitter for measuring differential pressure
and level in pressurized tanks. The device has two sensor modules, which measure the
operating pressure (High Pressure HP and Low Pressure LP). The differential pressure/
hydrostatic level is calculated in the transmitter unit. The sensor signal is transmitted
digitally. In addition, sensor temperatures and the individual process pressures present at the
respective sensor modules can be individually evaluated and transmitted. If the limit values
specified in the "Technical Data" and the conditions listed in the instructions and additional
documentation are observed, the measuring device may be used for the following
measurements (process variables):
Measured process variables
• Pressure HP and Pressure LP
• Sensor temperature HP and sensor temperature LP
• Transmitter temperature
Calculated process variables
• Differential pressure
• Level (level, volume or mass)
2.2.2 Incorrect use
The manufacturer is not liable for damage caused by improper or non-designated use.

Basic safety instructions Deltabar FMD71, FMD72
10 Endress+Hauser
Verification for borderline cases:
‣For special fluids and fluids for cleaning, Endress+Hauser is glad to provide assistance in
verifying the corrosion resistance of fluid-wetted materials, but does not accept any
warranty or liability.
2.2.3 Residual risks
Due to heat transfer from the process as well as power loss in the electronics, the temperature
of the electronics housing and the assemblies contained therein (e.g. display module, main
electronics module and I/O electronics module) may rise up to 80 °C (176 °F). When in
operation, the sensor can reach a temperature close to the medium temperature.
Danger of burns from contact with surfaces!
‣For elevated fluid temperature, ensure protection against contact to prevent burns.
2.3 Workplace safety
For work on and with the device:
‣Wear the required personal protective equipment according to federal/national
regulations.
‣Switch off the supply voltage before connecting the device.
2.4 Operational safety
Risk of injury!
‣Operate the device in proper technical condition and fail-safe condition only.
‣The operator is responsible for interference-free operation of the device.
Modifications to the device
Unauthorized modifications to the device are not permitted and can lead to unforeseeable
dangers.
‣If, despite this, modifications are required, consult with Endress+Hauser.
Repairs
To ensure continued operational safety and reliability,
‣Carry out repairs on the device only if they are expressly permitted.
‣Observe federal/national regulations pertaining to repair of an electrical device.
‣Use original spare parts and accessories from Endress+Hauser only.
Hazardous area
To eliminate danger to persons or the facility when the device is used in the approval-related
area (e.g. explosion protection, pressure vessel safety):
‣Check the nameplate to verify if the device ordered can be put to its intended use in the
approval-related area.
‣Observe the specifications in the separate supplementary documentation that is an integral
part of these Instructions.

Deltabar FMD71, FMD72 Product description
Endress+Hauser 11
2.5 Product safety
This measuring device is designed in accordance with good engineering practice to meet state-
of-the-art safety requirements, has been tested, and left the factory in a condition in which it
is safe to operate.
It meets general safety standards and legal requirements. It also complies with the EC
directives listed in the device-specific EC Declaration of Conformity. Endress+Hauser confirms
this by affixing the CE mark to the device.
3 Product description
3.1 Product design
See Operating Instructions.
Level measurement (level, volume and mass) with Deltabar:
LP 1
HP
p1
p2
P = p2
LP
P = p1 + p2
HP
A0016449
LP Sensor module LP (low pressure)
HP Sensor module HP (high pressure)
p2 Head pressure
p1 Hydrostatic pressure
1 Transmitter

Incoming acceptance and product identification Deltabar FMD71, FMD72
12 Endress+Hauser
The FMD71/FMD72 is best suited to level measurement in vessels with pressure overlay or in
vacuum vessels and tanks, high distillation columns and other vessels with changing ambient
temperatures.
The sensor module HP is mounted on the lower measuring connection and the sensor module
LP is mounted above the maximum level. The transmitter can be mounted on pipes or walls
with the mounting bracket.
The sensor signal is transmitted digitally. In addition, sensor temperatures and the individual
process pressures present at the respective sensor modules can be individually evaluated and
transmitted.
NOTICE
Incorrect sizing/order of sensor modules
‣In a closed system, please note that the sensor module is affected by the superimposed
head pressure (p2) in addition to the hydrostatic pressure (p1). This must be taken into
account when sizing the sensor module on the high-pressure side (HP).
4 Incoming acceptance and product identification
4.1 Incoming acceptance
A0015502
DELIVERY NOTE
1 = 2
A0016870
Is the order code on the delivery note (1) identical to the order code on the
product sticker (2)?

Deltabar FMD71, FMD72 Incoming acceptance and product identification
Endress+Hauser 13
A0016052
A0015502
A0016053
Are the goods undamaged?
A0015502
DELIVERY NOTE
Span
Ser. no.:
Order code:
P
U:
Deltabar
Ext. order code:
Order Code:
Ser.-No.:
MWP
Span
U=
Mat. -
Dat.:
0044
Mat.:
P
Ser. no.:
MWP
Sensor module Deltabar
A0016054
Do the data on the nameplate correspond to the order specifications and
the delivery note?

Incoming acceptance and product identification Deltabar FMD71, FMD72
14 Endress+Hauser
A0015502
A0022106
Is the documentation available?
If required (see nameplate): Are the safety instructions (XA) present?
If one of these conditions is not fulfilled, please contact your Endress+Hauser sales office.
4.2 Product identification
The following options are available for identification of the measuring device:
• Nameplate specifications
• Order code with breakdown of the device features on the delivery note
• Enter serial numbers from nameplates in W@M Device Viewer
(www.endress.com/deviceviewer): All information about the measuring device is displayed.
For an overview of the technical documentation provided, enter the serial number from the
nameplates in the W@M Device Viewer (www.endress.com/deviceviewer)
4.3 Nameplates
4.3.1 Nameplates of the T14 transmitter housing
Ser. no.:
Order code:
Ext. order code:
25
6
3
4
1
A0016056
1 Device name
2 Order number (shortened for re-ordering)
3 Extended order number (complete)
4 Technical data
5 Serial number (for clear identification)
6 Manufacturer's address

Deltabar FMD71, FMD72 Incoming acceptance and product identification
Endress+Hauser 15
Additional nameplate for devices with Ex approval
2
1
A0021222
1 Approval-specific information
2 Document number of Safety Instructions or drawing number
Additional nameplate for devices with PVDF process connection
1
A0022683
1 Application limits

Incoming acceptance and product identification Deltabar FMD71, FMD72
16 Endress+Hauser
4.3.2 Nameplates of the T17 transmitter housing
2
7
3
4
5
6
1
Ser. no.:
Order code:
Ext. ord. cd.:
A0021552
1 Device name
2 Manufacturer's address
3 Order number (shortened for re-ordering)
4 Extended order number (complete)
5 Serial number (for clear identification)
6 Technical data
7 Approval-related information and document number of Safety Instructions or drawing number
4.3.3 Nameplate of the sensor housing
0044
Mat.:
P
Ser. no.:
MWP
Sensor module Deltabar
2
1
A0021224
1 Sensor serial number
2 Identification of sensor type (HP/LP)

Deltabar FMD71, FMD72 Incoming acceptance and product identification
Endress+Hauser 17
4.4 Storage and transport
4.4.1 Storage conditions
Use original packaging.
Store the measuring device in clean and dry conditions and protect from damage caused by
shocks (EN 837-2).
Storage temperature range
–40 to +80 °C (–40 to +176 °F)
4.4.2 Transporting the product to the measuring point
LWARNING
Incorrect transport!
Housing and diaphragm may become damaged, and there is a risk of injury!
‣Transport the measuring device to the measuring point in its original packaging or by the
process connection.
‣Follow the safety instructions and transport conditions for devices weighing more than 18
kg (39.6 lbs).
A0016058

Installation Deltabar FMD71, FMD72
18 Endress+Hauser
5 Installation
• No moisture may enter the housing when installing or operating the device, or when
establishing the electrical connection.
• When measuring in media containing solids, such as dirty liquids, installing separators and
drain valves is useful for capturing and removing sediment.
• Do not clean or touch process isolating diaphragms with hard and/or pointed objects.
• Do not remove the protector on the process isolating diaphragm until just before
installation.
• Always firmly tighten the housing cover and the cable entries.
• If possible, point the cable and connector downwards to prevent moisture (e.g. rain or
condensation) from penetrating.
5.1 Mounting dimensions
For dimensions, see the "Mechanical construction" section in the Technical Information.
5.2 Mounting location
The FMD71/FMD72 is best suited to level measurement in vessels with pressure overlay or in
vacuum vessels and tanks, high distillation columns and other vessels with changing ambient
temperatures.
The sensor module HP is mounted on the lower measuring connection and the sensor module
LP is mounted above the maximum level. The transmitter can be mounted on pipes or walls
with the mounting bracket.
5.3 Orientation
• Transmitter: Any orientation.
• Sensor modules: The orientation can cause a zero point shift .
This position-dependent zero point shift can be corrected directly at the device via the
operating key, and also in hazardous areas in the case of devices with external operation
(position adjustment).
5.4 General installation instructions
Mounting the sensor modules and transmitter is very easy
• The housings of the sensor modules can be rotated up to 360°.
• The transmitter is freely rotatable in the mounting bracket.
The sensor modules and transmitter can be easily aligned when mounted.
Your benefits
• Easy installation due to optimum alignment of housing
• Easily accessible device operation
• Optimum readability of the onsite display (optional)
• Easy pipe installation due to optional alignment of the modules.
5.5 Thermal insulation - FMD71 high-temperature version
See Operating Instructions.

Deltabar FMD71, FMD72 Installation
Endress+Hauser 19
5.6 Installing the sensor modules
5.6.1 General installation instructions
• The nameplate on the sensor module specifies where the sensor module is typically
installed:
HP (bottom)
LP (top)
For further information, see the "Function" section .
• Due to the orientation of the sensor modules, there may be a shift in the zero point, i.e.
when the vessel is empty or partially full, the measured value does not display zero.
You can correct this zero point shift: see the "Commissioning without an operating menu"
→  36 or the "Position adjustment" section→  40.
• Always install the sensor module HP below the lowest measuring point.
• Always install the sensor module LP above the highest measuring point.
• Do not mount the sensor modules in the filling curtain or at a point in the tank which could
be affected by pressure pulses from an agitator.
• Do not mount the sensor modules in the suction area of a pump.
• The adjustment and functional test can be carried out more easily if you mount the sensor
modules downstream of a shutoff device.
• If a heated sensor module is cooled during the cleaning process (e.g. by cold water), a
vacuum develops for a short time, whereby moisture can penetrate the sensor through the
pressure compensation (3). If this is the case, mount the sensor with the pressure
compensation (3) pointing downwards.
• Keep the pressure compensation and GORE-TEX® filter (3) free from contamination.
• Do not clean or touch process isolating diaphragms with hard or pointed objects.
2
3
1
A0017512

Installation Deltabar FMD71, FMD72
20 Endress+Hauser
5.7 Mounting sensor modules with PVDF installation coupling
LWARNING
Risk of damage to process connection!
Risk of injury!
‣Sensor modules with PVDF process connections with threaded connection must be
installed with the mounting bracket provided!
LWARNING
Material fatigue from pressure and temperature!
Risk of injury if parts burst! The thread can become lose if exposed to high pressure and
temperature loads.
‣The integrity of the thread must be checked regularly. Also, the thread may need to be re-
tightened with the maximum tightening torque of 7 Nm (5.16 lbf ft). Teflon tape is
recommended for sealing the ½" NPT thread.
The mounting bracket can be installed on pipes with a diameter of 1¼" to 2" or on walls.
In the case of pipe mounting, the nuts on the bracket must be tightened uniformly with a
torque of at least 5 Nm (3.69 lbf ft).
• The mounting bracket is included in the delivery.
• Ordering information:
Product Configurator order code for "Enclosed accessories", option "PA" or
as separate accessory (Part No.: 71102216).
5.8 Installing the transmitter
The transmitter is installed with the mounting bracket supplied. The mounting bracket can be
installed on pipes with a diameter of 1¼" to 2" or on walls.
In the case of pipe mounting, the nuts on the bracket must be tightened uniformly with a
torque of at least 5 Nm (3.69 lbf ft).
The mounting bracket is included in the delivery.
5.8.1 Turning the display module
See "Operating Instructions".
5.9 Closing the housing covers
NOTICE
The housing cover can no longer be closed.
Damaged thread!
‣When closing the housing covers make sure that the threads on the covers and the housing
are free from dirt, for example sand. If you encounter resistance when closing the covers,
then check the threads again for dirt or fouling.