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.
Symbols usedSafety symbols
SymbolMeaning
Electrical symbols
SymbolMeaningSymbolMeaning
DANGER!
This symbol alerts you to a dangerous situation. Failure to avoid this situation will result in
serious or fatal injury.
WARNING!
This symbol alerts you to a dangerous situation. Failure to avoid this situation can result in
serious or fatal injury.
CAUTION!
This symbol alerts you to a dangerous situation. Failure to avoid this situation can result in
minor or medium injury.
NOTE!
This symbol contains information on procedures and other facts which do not result in
personal injury.
Direct currentAlternating current
Direct current and alternating currentGround connection
Protective ground connection
A terminal which must be connected
to ground prior to establishing any
other connections.
Symbols for certain types of information
SymbolMeaning
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
A grounded terminal which, as far as
the operator is concerned, is
grounded via a grounding system.
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.
Reference to page
Reference to graphic
Visual inspection
4Endress+Hauser
Page 5
Deltabar FMD71, FMD72
,…,
Symbols in graphics
SymbolMeaning
1, 2, 3 ...Item numbers
Series of steps
A, B, C, ...Views
A-A, B-B, C-C, ... Sections
Documentation
The document types listed are available:
In the Download area of the Endress+Hauser website: www.endress.com → Download
Brief Operating Instructions (KA): getting the 1st measured value quickly
KA01105P:
The Brief Operating Instructions contain all the essential information from incoming acceptance to
initial commissioning.
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.
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.
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.
DeviceDirectiveDocumentationOption
FMD71, FMD72ATEX II 1/2G Ex ia IIC T6 Ga/GbXA00619PBA
FMD71, FMD72ATEX II 1/2G Ex d [ia] IIC T6 Ga/GbXA00620PBC
FMD71, FMD72ATEX II 3G Ex nA IIC T6 GCXA00621PBD
FMD71, FMD72IEC Ex ia IIC T6 Ga/GbXA00622PIA
FMD71, FMD72IEC Ex d [ia] IIC T6 Ga/GbXA00623PIB
FMD71, FMD72CSA General Purpose-CD
FMD71, FMD72NEPSI Ex ia IIC T4/T6 Ga/GbXA01352PNA
FMD71, FMD72NEPSI Ex d [ia] IIC T4/T6 Ga/GbXA01352PNB
FMD71FM C/US IS Cl.I Div.1 Gr.A-D, AEx ia, Zone 0,1,2XA00628PFA
FMD71FM C/US XP AIS Cl.I Div.1 Gr.A-D, Exd [ia] Zone 0,1,2XA00629PFB
FMD71CSA C/US XP Cl.I Div.1 Gr.A-D, Ex d [ia], Zone 0,1,2XA00631PCB
FMD71FM C/US NI Cl.I Div.2 Gr.A-D, Zone 2XA00668PFD
FMD71CSA C/US IS Cl.I Div.1 Gr.A-D, Ex ia Zone 0,1,2XA00630PCA
FMD72CSA C/US IS Cl.I Div.1 Gr.A-D, Ex ia Zone 0,1,2XA00626PCA
FMD72CSA C/US XP Cl.I Div.1 Gr.A-D, Ex d [ia], Zone 0,1,2XA00627PCB
FMD72CSA C/US NI, Cl.I Div.2 Gr.A-D, Zone 2XA00671PCC
1)
Endress+Hauser5
Page 6
Deltabar FMD71, FMD72
LRV
URLURV
LRL
1 = 2
3
4
5
DeviceDirectiveDocumentationOption
FMD72FM C/US IS Cl.I Div.1 Gr.A-D, AEx ia, Zone 0,1,2XA00624PFA
FMD72FM C/US XP AIS Cl.I Div.1 Gr.A-D, Exd [ia] Zone 0,1,2XA00625PFB
FMD72FM C/US NI Cl.I Div.2 Gr.A-D, Zone 2XA00669PFD
1)Product Configurator order code for "Approval"
The nameplate provides information on the Safety Instructions (XA) that are relevant for the
device.
Terms and abbreviations
Term/abbreviationExplanation
XADocument type "Safety Instructions"
KADocument type "Brief Operating Instructions"
BADocument type "Operating Instructions"
SDDocument type "Special Documentation"
PNNominal pressure
MWPThe 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"
→ 29 section.
The MWP can also be found on the nameplate.
OPLThe 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"→ 29 section.
LRLLower range limit
URLUpper range limit
LRVLower range value
URVUpper range value
1)
TDTurn down
Set span and zero-based span.
½Lower range value (LRV) ½ < ½ Upper range
value (URV)½
Example with measuring cell
HP = 1000 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) = 1000 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.
Registered trademarks
HARTâ
Registered trademark of the HART Communication Foundation, Austin, USA
1Set span
2Zero-based span
3Nominal value upper range limit (URL)
4Nominal measuring range
5Sensor measuring range
Devices with ceramic process isolating diaphragm (Ceraphire®)
The ceramic sensor is an oil-free sensor, i.e. the process pressure acts directly on the robust ceramic
process isolating diaphragm and causes it to deflect. A pressure-dependent change in capacitance is
measured at the electrodes of the ceramic substrate and the process isolating diaphragm. The
measuring range is determined by the thickness of the ceramic process isolating diaphragm.
Advantages:
• Guaranteed overload resistance up to 40 times the nominal pressure
• The ultrapure 99.9 % ceramic (Ceraphire®, see also "www.endress.com/ceraphire") ensures:
– Extremely high chemical durability
– Less relaxation
– High mechanical durability
• Can be used in absolute vacuums up to 150 °C (302 °F)
The process pressure deflects the metal process isolating diaphragm of the sensor and a fill fluid
transfers the pressure to a Wheatstone bridge (semiconductor technology). The pressure-dependent
change in the bridge output voltage is measured and evaluated.
Advantages:
• Can be used for process pressures up to 40 bar (600 psi)
• Fully welded process isolating diaphragm
• Small, flush-mounted process connections
• Significantly reduced thermal effect e.g. compared to diaphragm seal systems with capillaries
A0016448
1Silicon measuring element, substrate
2Wheatstone bridge
3Channel with fill fluid
4Metal process isolating diaphragm
Measuring system
The FMD71/FMD72 consists of 2 sensor modules and one transmitter. One sensor module measures
the hydrostatic pressure (high pressure) and the other one the head pressure (low pressure). The
level (electronic differential pressure) is calculated in the transmitter using these two digital values.
Endress+Hauser7
Page 8
Deltabar FMD71, FMD72
Device features
FMD71FMD72
Field of
application
Process
connections
Measuring ranges
(differential
pressure)
1)
MWP
Process
temperature
limits
Ambient
temperature
range
Reference
accuracy of the
individual sensors
Supply voltage• Version for non-hazardous areas: 12 (13) to 45 V DC
Output4 to 20 mA with superimposed HART protocol
Options• NACE-compliant materials
• Level
• Differential pressure
• Thread
• EN and ASME flanges
• Flush-mounted hygienic connections
from
–100 to +100 mbar (–1.5 to +1.5 psi)
to –1 to +40 bar (–15 to +600 psi)
to 60 bar (900 psi)to 160 bar (2400 psi)
Thread / flange connections:
–25 to +125 °C (–13 to +257 °F)/
150 °C (302 °F)
Hygienic connections:
–25 to +130 °C (–13 to +266 °F) ,
150 °C (302 °F) for max. 1 hour
–40 to +80 °C (–40 to +176 °F)
• Up to ±0.075 % of the set span
• PLATINUM version: up to ±0.05 % of the set span
• Ex ia: 12 (13) to 30 V DC
• Software pre-configurations
• Thread
• EN and ASME flanges
• Flush-mounted hygienic connections
from –400 to +400 mbar (–6 to +6 psi)
to –1 to +40 bar (–15 to +600 psi)
Flush-mounted thread G 1 A, G 1½, G 2,
MNPT / flange connections:
–40 to +100 °C (–40 to +212 °F)/150 °C (302 °F)
Thread with internal process isolating
diaphragm: –40 to +125 °C (–40 to +257 °F)/
150 °C (302 °F)
Hygienic connections:
–40 to +130 °C (–40 to +266 °F) ,
150 °C (302 °F) for max. 1 hour
Higher process temperature limits available on
request (up to +250 °C (480 °F))
Product design
1)MWP: depends on the lowest-rated element, with regard to pressure, of the selected components
Level measurement (level, volume and mass) with Deltabar:
8Endress+Hauser
Page 9
Deltabar FMD71, FMD72
LP1
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
1Transmitter
System integration
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).
The device can be given a tag name (max. 8 alphanumeric characters).
Measuring point (TAG), see additional specifications.: Product Configurator order code for
"Identification", option "Z1"
Endress+Hauser9
Page 10
Input
Measured variableMeasured 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)
Deltabar FMD71, FMD72
FMD71: measuring range of
The maximum span of the differential pressure corresponds to the URL of the HP sensor.
1 bar (15 psi)–1 (–15)+1 (+15)6.7 (100)10 (150)0.01 (0.15)1H
2 bar (30 psi)–1 (–15)+2 (+30)13.3 (200)20 (300)0.01 (0.15)1K
4 bar (60 psi)–1 (–15)+4 (+60)18.7 (280.5)28 (420)0.01 (0.15)1M
10 bar (150 psi)–1 (–15)+10 (+150)26.7 (400.5)40 (600)0.01 (0.15)1P
40 bar (600 psi)–1 (–15)+40 (+600)100 (1500)160 (2400)0.01 (0.15)1S
1)The vacuum resistance applies for the measuring cell under reference operating conditions. (see "Reference operating conditions" section)
2)Product Configurator order code for "Sensor range"
Absolute pressure
abs
1)
Option
)]
Nominal valueRange limitMWPOPLVacuum resistance
lower (LRL)upper (URL)Silicone oil
[bar
(psi
abs
)][bar
abs
abs
(psi
)][bar
abs
abs
(psi
)][bar
abs
abs
(psi
)][bar
abs
abs
(psi
1 bar (15 psi)0+1 (+15)6.7 (100)10 (150)0.01 (0.15)2H
2 bar (30 psi)0+2 (+30)13.3 (200)20 (300)0.01 (0.15)2K
4 bar (60 psi)0+4 (+60)18.7 (280.5)28 (420)0.01 (0.15)2M
10 bar (150 psi)0+10 (+150)26.7 (400.5)40 (600)0.01 (0.15)2P
40 bar (600 psi)–1 (–15)+40 (+600)100 (1500)160 (2400)0.01 (0.15)2S
2)
2)
1)The vacuum resistance applies for the measuring cell under reference operating conditions. (see "Reference operating conditions" section)
2)Product Configurator order code for "Sensor range"
Endress+Hauser11
Page 12
Output
onon
offoff
damp.
damp.
DisplayDisplay
SensorSensor
HARTHART
RR
FIELD COMMUNICATION PROTOCOLFIELD COMMUNICATION PROTOCOL
SW /min
SW /min
E
+
–
E
+
–
U – 12 V
U – 13 V
R
L
max
23 mA
23 mA
£
30
20
12
U
[V]
40 45
1217
1435
783
348
[ ]W
[ ]W
R
L
max
R
L
max
30
20
13
40 45
1174
1391
739
304
Test
Test
£
3
AB
1
3
2
1
2
R
L
max
U
[V]
Deltabar FMD71, FMD72
Output signal
OperationInternal + LCDExternal
Order code option
2)
4 to 20 mA with superimposed digital communication protocol HART 6.0, 2-wire
1)
+ LCDInternal
458
1)In the case of the T17 transmitter housing, the operating keys are always arranged internally on the electronic insert.
2)Product Configurator order code for "Display, operation:"
Signal range 4 to 20 mA
Signal on alarm 4 to 20 mA
3.8 mA to 20.5 mA
As per NAMUR NE43
• High alarm (factory setting: 22 mA): can be set from 21 to 23 mA
• Hold measured value: last measured value is held
• Min. alarm: 3.6 mA
Maximum load
In order to guarantee sufficient terminal voltage in two-wire devices, a maximum load resistance R
(including line resistance) must not be exceeded depending on the supply voltage U0 of the supply
unit. In the following load diagrams, observe the position of the jumper and the explosion protection:
A0021280
AJumper for 4 to 20 mA test signal set to "Non-test" position
BJumper for 4 to 20 mA test signal set to "Test" position
1Power supply for II 1/2 G Ex ia, FM IS, CSA IS
2Power supply for devices for the non-hazardous area, 2 G Ex d, 3 G Ex nA, FM XP, FM NI, CSA XP, CSA dust
ignition-proof
3R
USupply voltage
maximum load resistance
Lmax
When operating via a handheld terminal or via a PC with an operating program, a minimum
communication resistance of 250 Ω must be taken into account.
12Endress+Hauser
A0017533
Page 13
Deltabar FMD71, FMD72
I
63 %
100 %
t
t1t
2
90 %
t
3
Dead time, time constant
Dynamic behavior,
current output
Dynamic behavior, HART
Presentation of the dead time and the time constant:
A0019786
Dead time (t1) [ms]Time constant (T63), t
max.120120280
Dead time (t1) [ms]Dead time (t1) [ms] +
Time constant T63 (= t2) [ms]
min.280400560
max.110012201380
2
Time constant (T90), t
Dead time (t1) [ms] +
Time constant T90 (= t3) [ms]
3
Reading cycle
• Acyclic: max. 3/s, typically 1/s (depending on command # and number of preambles)
• Cyclic (burst): max. 3/s, typically 2/s
The Deltabar FMD71/FMD72 offers BURST MODE functionality for cyclical value transmission via
the HART communication protocol.
Damping
alarm current
Firmware Version
Cycle time (update time)
Cyclic (burst): min. 300 ms
Response time
• Acyclic: min. 330 ms, typically 590 ms (depending on command # and number of preambles)
• Cyclic (burst): min. 160 ms, typically 350 ms (depending on command # and number of
preambles)
A damping affects all outputs (output signal, display):
• Via onsite display, handheld terminal or PC with operating program, continuous from 0 to 999 s
• Via DIP switch on the electronic insert, switch position "on" = set value and "off"
• Factory setting: 2 s
Damping can be switched on or off using a switch on the electronic insert. If the switch is on, the
time constant can be set via a parameter in the menu and if the switch is off, the output signal is not
damped (time constant = 0.0).
Configured min. alarm current: Product configurator order code for "Service", option "IA"
DescriptionOption
01.00.zz, HART, DevRev0178
1)Product Configurator order code for "Firmware version"
1)
Endress+Hauser13
Page 14
Deltabar FMD71, FMD72
Protocol-specific data
Manufacturer ID17 (0x11)
Device type code39 (0x27)
HART specification6.0
Device description files (DTM, DD)Information and files under:
• www.endress.com
• www.hartcomm.org
HART device variablesMeasured values for PV (primary variable)
• Differential pressure
• Level linear (before lin.)
• Level after linearization table
Measured values for SV, TV, QV (second, third and fourth variable)
• Measured differential pressure
• Corrected pressure
• Measured pressure HP
• Sensor pressure HP
• Sensor temperature HP
• Measured pressure LP
• Sensor pressure LP
• Sensor temperature LP
• Level before linearization
• Tank content
• Electronics temperature
Supported functions• Burst mode
• Additional transmitter status
14Endress+Hauser
Page 15
Deltabar FMD71, FMD72
4... 20mA
Test
Test
Test
4... 20mATest
1
8
6
7
2
3
4
5
Terminal assignment
Power supply
WARNING
L
Electrical safety is compromised by an incorrect connection!
In accordance with IEC/EN61010 a separate circuit breaker must be provided for the device .
‣
When using the measuring device in a hazardous area, installation must also comply with the
‣
relevant national standards and regulations as well as the safety instructions or installation or
control drawings.
All explosion protection data are given in separate documentation which is available upon
‣
request. The Ex documentation is supplied as standard with all devices approved for use in
explosion hazardous areas.
Devices with integrated overvoltage protection must be grounded.
‣
Protective circuits against reverse polarity, HF influences and overvoltage peaks are integrated.
‣
A0019989
1Housing
2Supply voltage
34 to 20 mA
4Devices with integrated overvoltage protection are labeled "OVP" (overvoltage protection) here.
5External ground terminal
64 to 20 mA test signal between positive and test terminal
7Internal ground terminal, minimum supply voltage = 12 V DC, jumper is set as illustrated in the diagram.
8Jumper for 4 to 20 mA test signal,
Supply voltage
Electronic versionJumper for 4 to 20 mA test signal in
"Test" position (delivery status)
4 to 20 mA HART, version for
non-hazardous areas
13 to 45 V DC12 to 45 V DC
Jumper for 4 to 20 mA test signal
in "Non-test" position
Measuring a 4 to 20 mA test signal
A 4 to 20 mA test signal may be measured via the positive and test terminal without interrupting
the measurement. The minimum supply voltage of the device can be reduced by simply changing the
position of the jumper. As a result, operation is also possible with a lower supply voltage. To keep the
measured error below 0.1 %, the current measuring device should exhibit an internal resistance of
<0.7Ω. Observe the position of the jumper in accordance with the following table.
• Measurement of 4 to 20 mA test signal via the positive and test terminal:
possible. (Thus, the output current can be measured without interruption via
the diode.)
• Delivery status
• Minimum supply voltage: 13 V DC
A0019992
• Measurement of 4 to 20 mA test signal via positive and test terminal: not
possible.
• Minimum supply voltage: 12 V DC
A0019993
Plastic M20x1.55 to 10 mm (0.2 to 0.39 in)0.5 to 2.5 mm2 (20 to 14 AWG)
Metal M20 x 1.5 7 to 10.5 mm (0.28 to 0.41 in)
• Endress+Hauser recommends using twisted, shielded two-wire cables.
• Terminals for core cross-sections 0.5 to 2.5 mm2 (20 to 14 AWG)
• The cable outer diameter depends on the cable entry used.
Residual ripple
Without influence on 4 to 20 mA signal up to ±5 % residual ripple within the permitted voltage
range [according to HART hardware specification HCF_SPEC-54 (DIN IEC 60381-1)]
Influence of power supply
≤0.0006 % of URL/1 V
Overvoltage protectionStandard version
The standard version of the pressure instruments does not contain any special elements to protect
against overvoltage ("wire to ground"). Nevertheless the requirements of the applicable EMC
standard EN 61000-4-5 (testing voltage 1kV EMC wire/ground) are met.
Optional overvoltage protection
Devices showing version "NA" in feature 610 "Accessory Mounted" in the order code are equipped
with overvoltage protection.
• Overvoltage protection:
– Nominal functioning DC voltage: 600 V
– Nominal discharge current: 10 kA
• Surge current check î = 20 kA satisfied as per DIN EN 60079-14: 8/20 μs
• Arrester AC current check I = 10 A satisfied
NOTICE
Device could be destroyed!
Devices with integrated overvoltage protection must be grounded.
‣
16Endress+Hauser
Page 17
Deltabar FMD71, FMD72
90°
90°
C
A
B
Performance characteristics of ceramic process isolating
diaphragm
Reference operating
conditions
Influence of the installation
position depending on sensor
• As per IEC 60770
• Ambient temperature TU = constant, in the range of +21 to +33 °C (+70 to +91 °F)
•
Humidityj= constant, in the range of 5 to 80 % rH
• Ambient pressure pA = constant, in the range of860 to 1060 mbar (12.47 to 15.37 psi)
• Position of the measuring cell = constant, in the range of horizontal ±1° (see also "Influence of the
installation position" section → 17)
• Input of Lo Trim Sensor and Hi Trim Sensor for lower range value and upper range value
• Zero based span
• Material of process isolating diaphragm: Al2O3 (aluminum-oxide ceramic, Ceraphire®)
• Supply voltage: 24 V DC ±3 V DC
• Load with HART: 250 Ω
Process isolating diaphragm axis is horizontal (A) Process isolating diaphragm pointing
This effect can be corrected using the function to adjust the position (position adjustment) for the
differential pressure. Additional position adjustments for individual pressure signals are not
available.
A position-dependent zero shift can be corrected on the device .
Resolution
Vibration effects
Application limits
• Current output: 1 μA
• Display: can be set (factory setting: presentation of the maximum accuracy of the transmitter)
Test standardVibration effects
IEC 61298-3≤ Reference accuracy up to 10 to 60 Hz: ±0.35 mm (±0.01 in); 60 to 500 Hz: 2 g
A high ratio between the level and head pressure or between the differential pressure and static
pressure can result in large measured errors. A maximum ratio of 1:10 is recommended. For
calculation purposes, please use the free "Applicator" calculation tool, which is available online at
"www.endress.com/applicator" or on CD-ROM.
Process isolating diaphragm pointing
downwards (C)
A0016465
Endress+Hauser17
Page 18
Deltabar FMD71, FMD72
A
Diff
HPHP
2
(AURL )
+=
.
LPLP
2
(AURL )
.
100100
A[%]
P
100
.
Diff
Diff
=
A
Diff
T
Diff
HPHP
2
(TURL )
+=
.
LPLP
2
(TURL )
.
100100
T[%]
P
100
.
Diff
Diff
=
T
Diff
Reference accuracy
The reference accuracy contains the non-linearity [DIN EN 61298-2 3.11] including the pressure
hysteresis [DIN EN 61298-23.13] and non-repeatability [DIN EN 61298-2 3.11] in accordance with
the limit point method as per [DIN EN 60770].
Measuring cellSensorReference accuracy (A)
[%URL for every sensor]
StandardPlatinum
100 mbar (1.5 psi)Gauge pressureA =
250 mbar (3.75 psi) Gauge pressureA =
400 mbar (6 psi)Gauge pressureA =
1 bar (15 psi)
2 bar (30 psi)
4 bar (60 psi)
10 bar (150 psi)
40 bar (600 psi)
1)For hygienic process connections
Gauge pressure/ Absolute pressure A =
A =
A =
A =
A =
±0.075
±0.15
±0.075
±0.15
±0.075
±0.15
±0.075
±0.15
-Calculation (mbar, bar or psi):
1)
-
1)
-
1)
A =±0.05
1)
Ordering information
DescriptionOption
PlatinumD
StandardG
±0.075
Calculated reference accuracy (A
of the differential pressure
Percentage calculation of URL dP:
1)
1)
Diff
)
A0016468
A0016469
1)Product Configurator order code for "Reference accuracy"
Thermal change of the zero
output and the output spanStandard version
Measuring cell–10 to +60 °C (+14 to +140 °F)–20 to –10 °C (–4 to +14 °F)
1 bar (15 psi)
2 bar (30 psi)
4 bar (60 psi)
10 bar (150 psi)
40 bar (600 psi)
1 bar (15 psi)
2 bar (30 psi)
4 bar (60 psi)
10 bar (150 psi)
40 bar (600 psi)Absolute
1)For hygienic process connections
Total performance
Gauge
pressure
Gauge
pressure
Absolute
pressure
pressure
T
= ±0.176
total
T
= ±0.352
Total
T
= ±0.092
total
T
= ±0.184
total
T
= ±0.092
total
T
= ±0.184
total
T
= ±0.092
total
T
= ±0.184
total
The "Total performance" specification comprises the non-linearity including hysteresis, nonreproducibility as well as the thermal change of the zero point. All specifications apply to the
temperature range –10 to +60 °C (+14 to +140 °F).
+60 to +150 °C
(140 to +302 °F)
1)
1)
1)
1)
T = ±0.75
T = ±1.25
T = ±0.5
T = ±0.75
T = ±0.75
T = ±1.25
T = ±0.5
T = ±0.75
1)
1)
1)
1)
Calculated thermal change (T
of the differential pressure
1 bar (15 psi)
2 bar (30 psi)
4 bar (60 psi)
10 bar (150 psi)
40 bar (600 psi)
TP = ±0.2TP = ±0.46TP = ±0.575Calculation (mbar, bar or psi):
TP = ±0.15TP = ±0.46TP = ±0.5
% of URL for every
sensor - hightemperature version
% of URL for every
sensor - hygienic
version
Calculated total performance (TP
of the differential pressure
Percentage calculation of URL dP:
The "Applicator Sizing Electronic dp" selection tool, available free of charge on the Endress
+Hauser web site (www.endress. com/applicator), enables detailed calculations for your
respective applications.
1 bar (15 psi)
2 bar (30 psi)
4 bar (60 psi)
10 bar (150 psi)
40 bar (600 psi)
1)For hygienic process connections
Gauge pressureL = ±0.05
Absolute pressureL = ±0.3
Total error
1 year10 years
% of URL for every sensor
L = ±0.2
L = ±0.1
1)
The total error comprises the total performance and long-term stability. All specifications apply to
the temperature range –10 to +60 °C (+14 to +140 °F).
1 bar (15 psi)
2 bar (30 psi)
4 bar (60 psi)
10 bar (150 psi)
40 bar (600 psi)
TE = ±0.25TE = ±0.51TE = ±0.925Calculation (mbar, bar or psi):
TE = ±0.2TE = ±0.51TE = ±0.7
% of URL for every
sensor - hightemperature version
% of URL for every
sensor - hygienic
version
Calculated total error (TE
of the differential pressure
Percentage calculation of URL dP:
Diff
Diff
)
A0016464
)
A0016472
Warm-up period
A0016473
4 to 20 mA HART : < 10 s
20Endress+Hauser
Page 21
Deltabar FMD71, FMD72
90°
90°
C
A
B
Performance characteristics of metallic process isolating
diaphragm
Reference operating
conditions
Influence of the installation
position depending on sensor
• As per IEC 60770
• Ambient temperature TU = constant, in the range of +21 to +33 °C (+70 to +91 °F)
•
Humidityj= constant, in the range of 5 to 80 % rH
• Ambient pressure pA = constant, in the range of860 to 1060 mbar (12.47 to 15.37 psi)
• Position of the measuring cell = constant, in the range of horizontal ±1° (see also "Influence of the
installation position" section → 21)
• Input of Lo Trim Sensor and Hi Trim Sensor for lower range value and upper range value
• Zero based span
• Process isolating diaphragm material: AISI 316L (1.4435)
• Filling oil: silicone oil
• Supply voltage: 24 V DC ±3 V DC
• Load with HART: 250 Ω
Sensor with 1/2" thread and
silicone oil
Sensor with thread > 1/2"
and flanges
Resolution
Vibration effects
Application limits
Process isolating diaphragm
axis is horizontal (A)
Calibration position, no
measurement error
Process isolating diaphragm pointing
upwards (B)
< +4 mbar (+0.06 psi)< –4 mbar (–0.06 psi)
< +10 mbar (+0.145 psi)
The value is doubled for inert oil.
Process isolating diaphragm pointing
downwards (C)
< –10 mbar (–0.145 psi)
The value is doubled for inert oil.
This effect can be corrected using the function to adjust the position (position adjustment) for the
differential pressure. Additional position adjustments for individual pressure signals are not
available.
A position-dependent zero shift can be corrected on the device .
• Current output: 1 μA
• Display: can be set (factory setting: presentation of the maximum accuracy of the transmitter)
Test standardVibration effects
IEC 61298-3≤ Reference accuracy up to 10 to 60 Hz: ±0.35 mm (±0.01 in); 60 to 500 Hz: 2 g
A high ratio between the level and head pressure or between the differential pressure and static
pressure can result in large measured errors. A maximum ratio of 1:10 is recommended. For
calculation purposes, please use the free "Applicator" calculation tool, which is available online at
"www.endress.com/applicator" or on CD-ROM.
A0016465
Endress+Hauser21
Page 22
Deltabar FMD71, FMD72
A
Diff
HPHP
2
(AURL )
+=
.
LPLP
2
(AURL )
.
100100
A[%]
P
100
.
Diff
Diff
=
A
Diff
T
Diff
HPHP
2
(TURL )
+=
.
LPLP
2
(TURL )
.
100100
T[%]
P
100
.
Diff
Diff
=
T
Diff
Reference accuracy
The reference accuracy contains the non-linearity [DIN EN 61298-2 3.11] including the pressure
hysteresis [DIN EN 61298-23.13] and non-repeatability [DIN EN 61298-2 3.11] in accordance with
the limit point method as per [DIN EN 60770].
Measuring cellSensorReference accuracy (A)
[%URL for every sensor]
StandardPlatinum
400 mbar (6 psi)Gauge pressureA =±0.15
±0.3
1 bar (15 psi)
2 bar (30 psi)
4 bar (60 psi)
10 bar (150 psi)
40 bar (600 psi)
1)For hygienic process connections
Gauge pressure/
Absolute pressure
A =
A =
±0.075
±0.15
-Calculation (mbar, bar or psi):
1)
A =
1)
A =
Ordering information
DescriptionOption
PlatinumD
StandardG
±0.05
±0.075
Calculated reference accuracy (A
of the differential pressure
1)
Percentage calculation of URL dP:
)
Diff
A0016468
A0016469
1)
1)Product Configurator order code for "Reference accuracy"
Thermal change of the zero
output and the output span
Measuring cell–10 to +60 °C (+14 to +140 °F)–40 to –10 °C (–40 to +14 °F)
% of the set span for every sensor
400 mbar (6 psi)T
1 bar (15 psi)
2 bar (30 psi)
4 bar (60 psi)
10 bar (150 psi)
40 bar (600 psi)
total
T
span
T
zero point
T
total
T
span
T
zero point
= ±0.215
= ±0.2
= ±0.015
= ±0.101
= ±0.1
= ±0.01
'
'
+60 to +80 °C (+140 to +176 °F)
T
= ±0.43
total
T
= ±0.4
span
T
= ±0.03
zero point
T
= ±0.42
total
T
= ±0.4
span
T
= ±0.02
zero point
Calculated thermal change (T
of the differential pressure
Calculation (mbar, bar or psi):
Percentage calculation of URL dP:
Diff
)
A0016474
A0016475
22Endress+Hauser
Page 23
Deltabar FMD71, FMD72
TP
Diff
HPHP
2
(TPURL )
+=
.
LPLP
2
(TP URL )
.
100100
TP[%]
P
100
.
Diff
Diff
=
TP
Diff
L
Diff
HPHP
2
(L
100100
URL )
+=
.
LPLP
2
(LURL )
.
L[%]
P
100
.
Diff
Diff
=
L
Diff
TE
Diff
HPHP
2
(TEURL )
+=
.
LPLP
2
(TEURL )
.
100100
TE[%]
P
100
.
Diff
Diff
=
TE
Diff
Total performance
The "Total performance" specification comprises the non-linearity including hysteresis, nonreproducibility as well as the thermal change of the zero point. All specifications apply to the
temperature range –10 to +60 °C (+14 to +140 °F).
Measuring cell% of URL for every sensorCalculated total performance (TP
400 mbar (6 psi)TP = ±0.25
TP = ±0.34
1 bar (15 psi)
2 bar (30 psi)
4 bar (60 psi)
10 bar (150 psi)
40 bar (600 psi)
1)For hygienic process connections
TP = ±0.15
TP = ±0.25
1)
1)
Calculation (mbar, bar or psi):
Percentage calculation of URL dP:
The "Applicator Sizing Electronic dp" selection tool, available free of charge on the Endress
+Hauser web site (www.endress. com/applicator), enables detailed calculations for your
respective applications.
The total error comprises the total performance and long-term stability. All specifications apply to
of the differential pressure
Percentage calculation of URL dP/year:
the temperature range –10 to +60 °C (+14 to +140 °F).
Measuring cell% of URL/year for every sensorCalculated total error (TE
400 mbar (6 psi)TE = ±0.30Calculation (mbar, bar or psi):
1 bar (15 psi)
2 bar (30 psi)
4 bar (60 psi)
10 bar (150 psi)
40 bar (600 psi)
TE = ±0.20
Percentage calculation of URL dP:
)
Diff
) of the differential pressure
Diff
A0016463
A0016464
A0016472
Warm-up period
Endress+Hauser23
4 to 20 mA HART : < 10 s
A0016473
Page 24
Deltabar FMD71, FMD72
A
B
12
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.
• If possible, point the cable and connector downwards to prevent moisture (e.g. rain or
condensation) from penetrating.
Mounting location
Orientation
General installation
instructions
Thermal insulation - FMD71
high-temperature version
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.
• 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).
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.
The FMD71 high-temperature version may only be insulated up to a certain height. The maximum
permitted insulation height is indicated on the devices and applies to an insulation material with a
heat conductivity ≤ 0.04 W/(m x K) and to the maximum permitted ambient and process
temperature. The insulation height is not indicated on hygienic connections.
• Ambient temperature (TA): ≤ 70 °C (158 °F)
• Process temperature (TP): ≤ 150 °C (302 °F)
The data were determined under the most critical application "quiescent air".
A0021075
AAmbient temperature
BProcess temperature
1Insulation height
2Insulation material
24Endress+Hauser
Page 25
Deltabar FMD71, FMD72
Installing the sensor
modules
Mounting sensor modules
with PVDF installation
coupling
General installation instructions
• 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.
• 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.
WARNING
L
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!
The mounting bracket can be installed on pipes with a diameter of 1¼" to 2" or on walls.
Installing the transmitter
A0017514
• 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).
• Dimensions → 54.
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.
A0021145
• The mounting bracket is included in the delivery.
• If an additional mounting bracket is required, this can be ordered as follows:
Product Configurator order code for "Enclosed accessories", option "PA" or as separate accessory
(part number: 71102216).
• Dimensions → 54.
Endress+Hauser25
Page 26
Deltabar FMD71, FMD72
Sensor and transmitter cable
DescriptionLengthOption
Sensor cable PE-X1.82 m (6 ft)BC
4.57 m (15 ft)CC
10.67 m (35 ft)DC
30.48 m (100 ft)FC
45.72 m (150 ft)GC
Transmitter cable PE-X1.82 m (6 ft)BC
4.57 m (15 ft)CC
10.67 m (35 ft)DC
1)Product Configurator order code for "Cable length"
Technical data for PE-X cable:
• Temperature resistance:–40 to +80 °C (–40 to +176 °F)
• Flame resistance: to DIN 60332-1-2 and DIN EN 50266-2-5
• Halogen-free: to DIN VDE 0472 part 815
• Oil-resistant: to DIN EN 60811-2-1
• Other: UV-resistant to DIN VDE 0276-605
• Bending radius: min. 34 mm (1.34 in), permanently installed
1)
26Endress+Hauser
Page 27
Deltabar FMD71, FMD72
Environment
Ambient temperature range
Storage temperature range
Climate class
Degree of protection
Vibration resistance
Electromagnetic
compatibility
• Without local display: –40 to +80 °C (–40 to +176 °F)
• WIth local display: –20 to +70 °C (–4 to +158 °F)
Extended temperature operation range with limitations in optical properties, such as display speed
and contrast. –40 to +80 °C (–40 to +176 °F)
For devices for use in hazardous areas, see Safety Instructions .
The device can be used in this temperature range. The values of the specification, such as thermal
change, may be exceeded.
–40 to +80 °C (–40 to +176 °F)
Class 4K4H (air temperature: –20 to +55 °C (–4 to +131 °F), relative humidity: 4 to 100 %) fulfilled
as per DIN EN 60721-3-4 (condensation possible)
IP66/68 NEMA 4x/6P
IP 68 degree of protection for T17 housing: 1.83 mH2O for 24 h
HousingTest standardVibration resistance
Aluminum and steel housingIEC 61298-3Guaranteed for:
10 to 60 Hz: ±0.15 mm (±0.0059 in);
60 to 500 Hz: 2 g in all 3 planes
• Electromagnetic compatibility as per EN 61326 Appendix A and NAMUR Recommendation EMC
(NE21). For details, refer to the Declaration of Conformity.
• Maximum deviation: < 0.5 % of span
• All EMC measurements were performed with a turn down (TD) = 2:1.
Endress+Hauser27
Page 28
Process
Deltabar FMD71, FMD72
Process temperature range
for devices with ceramic
process isolating diaphragm
FMD71
• Thread and flanges: –25 to +125 °C (–13 to +257 °F)
• Hygienic connections:–25 to +130 °C (–13 to +266 °F) , 150 °C (302 °F) for max. 60 minutes
• High-temperature version: –15 to +150 °C (+5 to +302 °F); see ordering information, order code
610, option "NB".
• For saturated steam applications, use a device with a metal process isolating diaphragm, or
provide a siphon for temperature isolation when installing.
• Pay attention to the process temperature range of the seal. See also the following table.
SealNotesProcess temperature rangeOption
Threaded connection or flangeHygienic process connections
FKM Viton-–25 to +125 °C (–13 to +257 °F)/
150 °C (302 °F)
2)
FKM VitonFDA
3)
, 3A Class I, USP
–5 to +125 °C (+23 to +257 °F)–5 to +150 °C
Class VI
Kalrez, Compound 4079-+5 to +125 °C (+41 to +257 °F)
-A
(+23 to +302 °F)
-D
+5 to +150 °C (+41 to +302 °F)
NBRFDA
3)
–10 to +100 °C (+14 to +212 °F)-F
NBR, low temperature-–40 to +100 °C (–40 to +212 °F)-H
4)
HNBR
EPDM 70FDA
EPDM 291
4)
3)
FDA
, 3A Class II,
KTW, AFNOR, BAM
3)
3)
FDA
, 3A Class II, USP
Class VI, DVGW, KTW,
–25 to +125 °C (–13 to +257 °F)/
150 °C (302 °F)
2)
–20 to +125 °C (–4 to +257 °F) G
–40 to +125 °C (–40 to +257 °F)-J
–15 to +125 °C (+5 to +257 °F)/
150 °C (302 °F)
2)
–15 to +150 °C
(+5 to +302 °F)
W270, WRAS, ACS,
NSF61
FFKM Kalrez 6375-+5 to +125 °C (+41 to +257 °F)-L
FFKM Kalrez 7075-+5 to +125 °C (+41 to +257 °F)-M
FFKM Kalrez 6221FDA
3)
, USP Class VI–5 to +125 °C (+23 to +257 °F)–5 to +150 °C
(+23 to +302 °F)
Fluoroprene XP40FDA
VMQ siliconeFDA
3)
, USP Class VI, 3A
Class I
3)
+5 to +125 °C (+41 to +257 °F)/
150 °C (302 °F)
2)
+5 to +150 °C
(+41 to +302 °F)
–35 to +85 °C (–31 to +185 °F)–20 to +85 °C (–4 to +185 °F)S
The process temperature ranges indicated here refer to the permanent operation of the FMD71. For devices with hygienic process connections, a
higher temperature (max. 150 °C (302 °F)) may be applied for a short period (max. 60 min.) for cleaning purposes. 60 min.) eine höhere Temperatur
(max. 150 °C (302 °F) angewendet werden.
1)
B
K
N
P
1)Product Configurator order code for "Seal"
2)150 °C (302 °F) for high temperature version
3)Food-safe FDA 21 CFR 177.2600
4)These seals are used for devices with 3A-approved process connections.
Applications with changes in temperature
Frequent extreme changes in temperatures can temporarily cause measuring errors. Temperature
compensation takes place after a few minutes. Internal temperature compensation is faster the
smaller the change in temperature and the longer the time interval.
28Endress+Hauser
Page 29
Deltabar FMD71, FMD72
Process temperature range
for devices with metallic
process isolating diaphragm
FMD72
Pressure specifications
DeviceLimits
Process connections with internal process isolating diaphragm–40 to +125 °C (–40 to +257 °F)
Process connections with flush-mounted process isolating diaphragm
(flanges, G 1 A, G 1½, G 2, MNPT)
Hygienic process connections with flush-mounted process isolating
diaphragm
WARNING
L
The maximum pressure for the measuring device depends on the lowest-rated element with
regard to pressure.
For pressure specifications, see the "Measuring range" section and the "Mechanical construction"
‣
section.
The MWP (maximum working pressure) is specified on the nameplate of the individual sensor
‣
module. Betriebsdruck) angegeben. This value refers to a reference temperature of
+20 °C (+68 °F), or +38 °C (+100 °F)for ASME flanges, and can be present at the device for an
unlimited period. Observe pressure-temperature dependency.
Please refer to the following standards for the pressure values permitted at higher temperatures:
‣
EN 1092-1: 2001 Tab. 18 (With regard to their stability-temperature property, the materials
1.4435 and 1.4404 are grouped together under 13E0 in EN 1092-1 Tab. 18. The chemical
composition of the two materials can be identical.) // ASME B 16.5a – 1998 Tab. 2-2.2 F316 //
ASME B 16.5a – 1998 Tab. 2.3.8 N10276 // JIS B 2220
The test pressure corresponds to the overload limit of the individual sensors (overpressure limit
‣
OPL = 1.5 x MWP (formula does not apply to the FMD72 with a 40 bar (600 psi) measuring
cell)) and may be applied for a limited period only to ensure that no lasting damage occurs.
The Pressure Equipment Directive (EC Directive 97/23/EC) uses the abbreviation "PS". The
‣
abbreviation "PS" corresponds to the MWP (maximum working pressure ) of the measuring
device..
In the case of sensor range and process connections where the over pressure limit (OPL) of the
‣
process connection is smaller than the nominal value of the sensor, the device is set at the
factory, at the very maximum, to the OPL value of the process connection. If you want to use the
entire sensor range, select a process connection with a higher OPL value (1.5 x PN; MWP = PN).
–40 to +100 °C (–40 to +212 °F)
–40 to +130 °C (–40 to +266 °F)
For max. 60 minutes: +150 °C (+302 °F)
Endress+Hauser29
Page 30
Mechanical construction
A
B
C
D
Deltabar FMD71, FMD72
Device height
The device height is calculated from
• the height of the housing and
• the height of the individual process connection.
The individual heights of the components are listed in the following sections. To calculate the device
height simply add up the individual heights of the components. Where applicable also take into
consideration the installation distance (space that is used to install the device). You can use the
following table for this purpose:
SectionPageHeightExample
Transmitter height→ 31 ff.(A)
Sensor height→ 32(B)
Process connections→ 34(C)
Installation distance-(D)
A0021292
Device height
30Endress+Hauser
Page 31
Deltabar FMD71, FMD72
152 (5.98)
111 (4.37)
111 (4.37)
220 (8.66)
94 (3.7)
132 (5.2)
115 (4.53)
238 (9.37)
T14 transmitter housing
(optional display on the side)
A0016478
Engineering unit mm (in)
In preparation - T17
transmitter housing
(optional display on the side)
MaterialDegree of protectionCable entryWeight kg (lbs)Option
With displayWithout display
AluminumIP66/68 NEMA 4x/6P• M20
• G ½"
• NPT ½"
Stainless steelIP66/68 NEMA 4x/6P• M20
• G ½"
• NPT ½"
1)Product Configurator order code for "Transmitter housing"
1.7 (3.75)1.6 (3.53)A
2.6 (5.73)2.5 (5.51)B
1)
A0021293
Engineering unit mm (in)
1)
MaterialDegree of protectionCable entryWeight kg (lbs)Option
With displayWithout display
316LIP66/68 NEMA 6P• M20
• G ½"
• NPT ½"
1)Product Configurator order code for "Transmitter housing"
2.6 (5.73)2.5 (5.51)C
Endress+Hauser31
Page 32
Sensor housing
64.5 (2.54)
145 (5.71)
115 (4.53)
1
2
Deltabar FMD71, FMD72
A0016480
1 With M20 cable entry
2With NPT ½" thread
Engineering unit mm (in)
Selecting the electrical
connection
MaterialDegree of protectionCable entryWeightOption
kg (lbs)
AluminumIP66/68 NEMA 4x/6P• M20 cable entry
• NPT ½"
Stainless steelIP66/68 NEMA 4x/6P• M20 cable entry
• NPT ½"
1)Product Configurator order code for "Sensor module housing"
0.6 (1.32)A
1.35 (2.98)B
1)
There is a dependency between the cable entries of the transmitter housing and those of the sensor
module housing.
Different cable entries are available in the sensor module housing depending on the cable entry
selected for the transmitter housing (see the following table):
BANSI ½" MNPT, bore hole11.4 mm (0.45 in)AISI 316L (CRN)RKJ
Alloy C276 (2.4819) (CRN)RKC
Monel (2.4360)RKD
CANSI ½" MNPT, bore hole3 mm (0.12 in)PVDF
• Mount only with mounting bracket
• MWP 10 bar (150 psi), OPL max. 15 bar (225 psi)
• Process temperature range: +10 to +60 °C (+14 to +140 °F)
DANSI ½" FNPT 11.4 mm (0.45 in)AISI 316L (CRN)R1J
Alloy C276 (2.4819) (CRN)R1C
Monel (2.4360)R1D
1)Product Configurator order code for "Process connection"
DescriptionHeight H
Standard version29 mm (1.14 in)
High-temperature version107 mm (4.21 in)
RJF
1)
Endress+Hauser35
Page 36
Deltabar FMD71, FMD72
60
NPT 1½"
H
27 (1.06)
ø68 (2.68)
70
H
30 (1.18)
33.5 (1.32)
NPT 2"
FMD71 process connections,
Thread ANSI
flush-mounted process
isolating diaphragm
ItemDescriptionMaterialWeightOption
AANSI 1 ½" MNPTAISI 316L (CRN)0.63 (1.39)U7J
BANSI 2" MNPTAISI 316L (CRN)U8J
A
Engineering unit mm (in)
Alloy C276 (2.4819) (CRN)U7C
Monel (2.4360)U7D
Alloy C276 (2.4819) (CRN)U8C
Monel (2.4360)U8D
B
A0020948
kg (lbs)
A0020949
1)
1)Product Configurator order code for "Process connection"
ItemDescriptionHeight H
AStandard version57 mm (2.24 in)
High-temperature version64 mm (2.52 in)
BStandard version54 mm (2.13 in)
High-temperature version61 mm (2.4 in)
36Endress+Hauser
Page 37
Deltabar FMD71, FMD72
H
60
11 (0.43)
M44x1.25
22 (0.87)
ø40.5 (1.59)
FMD71 process connections,
flush-mounted process
isolating diaphragm
Thread DIN 13
Engineering unit mm (in)
DescriptionMaterialWeightOption
kg (lbs)
DIN 13 M44 x 1.25AISI 316L0.63 (1.39)G4J
Alloy C276 (2.4819)G4C
1)Product Configurator order code for "Process connection"
A0020950
1)
DescriptionHeight H
Standard version62 mm (2.44 in)
High-temperature version69 mm (2.72 in)
Endress+Hauser37
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Deltabar FMD71, FMD72
ø55 (2.17)
H
60
25 (0.98)
G 1½"
28 (1.1)
ø68 (2.68)
70
G 2"
H
30 (1.18)
33.5 (1.32)
FMD71 process connections,
Thread ISO 228 G
flush-mounted process
isolating diaphragm
ItemDescriptionMaterialWeightOption
AThread ISO 228 G 1 ½" AAISI 316L0.63 (1.39)GVJ
BThread ISO 228 G 2" AAISI 316LGWJ
A
Engineering unit mm (in)
B
A0020946
kg (lbs)
Alloy C276 (2.4819)GVC
Monel (2.4360)GVD
Alloy C276 (2.4819)GWC
Monel (2.4360)GWD
A0020947
1)
1)Product Configurator order code for "Process connection"
ItemDescriptionHeight H
AStandard version59 mm (2.32 in)
High-temperature version66 mm (2.6 in)
BStandard version54 mm (2.13 in)
High-temperature version61 mm (2.4 in)
38Endress+Hauser
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Deltabar FMD71, FMD72
ø42 (1.65)
ø64 (2.52)
ø61 (2.4)
ø57 (2.24)
ø52 (2.05)
13 (0.51)
20 (0.79)
72 (2.83)
ø42 (1.65)
ø52 (2.05)
ø77 (3.03)
ø91 (3.58)
ø84 (3.31)
72 (2.83)
ø42 (1.65)
ø75 (2.95)
ø84 (3.31)
ø52 (2.05)
12 (0.47)
20 (0.79)
72 (2.83)
ø38 (1.5)
ø66 (2.6)
ø52 (2.05)
ø60 (2.36)
12 (0.47)
42 (1.65)
49 (1.93)
FMD71 process connections,
flush-mounted process
isolating diaphragm
A
Hygienic connections
B
A0026375
A0026376
C
Engineering unit mm (in)
Item DescriptionMaterialWeightOption
2)
A
Tri-Clamp ISO 2852 DN 40 – DN 51 (2"), DIN 32676DN 50, EHEDG, 3A (CRN)AISI 316L (1.4435)0.7 (1.54)TDJ
BTri-Clamp ISO 2852 DN 76.1 (3"), EHEDG, 3A, with FDA seal0.9 (1.98)TFJ
2)
C
Varivent Type N for pipes 40 – 162, PN 40, EHEDG, 3A (CRN)1 (2.21)TRJ
DVarivent Type F for pipes DN25-32 PN 40, 316L, EHEDG, 3A, with FDA seal0.46 (1)TQJ
D
A0026377
kg (lbs)
3)
3)
A0026376
A0026378
1)
1)Product Configurator order code for "Process connection"
2)Roughness of wetted surfaces Ra < 0.76 µm (30 µin) as standard. Surface quality Ra < 0.38 µm (15 µin) electropolished (wetted) available on
request.
3)Endress+Hauser supplies these slotted nuts in stainless steel AISI 304 (DIN/EN material number 1.4301) or in AISI 304L (DIN/EN material
number 1.4307).
1)Product Configurator order code for "Process connection"
2)Endress+Hauser supplies these slotted nuts in stainless steel AISI 304 (DIN/EN material number 1.4301) or in AISI 304L (DIN/EN material
number 1.4307).
A0026386
1)
2)
2)
2)
2)
40Endress+Hauser
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Deltabar FMD71, FMD72
12 (0.47)
ø42 (1.65)
ø82 (3.23)
ø52 (2.05)
ø60 (2.36)
ø100 (3.94)
ø69 (2.72)
20 (0.79)
72 (2.83)
16 (0.63)
ø42 (1.65)
ø52 (2.05)
ø61 (2.4)
ø84 (3.31)
ø105 (4.13)
ø65 (2.56)
68 (2.68)
ø38 (1.5)
ø50 (1.97)
ø70 (2.76)
ø52 (2.05)
ø90 (3.54)
17 (0.67)
53 (2.09)
39 (1.54)
I
K
A0026387
J
A0026388
A0026389
Engineering unit mm (in)
ItemDescriptionMaterialWeightOption
kg (lbs)
IAPV inline DN50 PN40, 316L, 3A, with FDA sealAISI 316L (1.4435)1.2 (2.65)TMJ
1)The roughness of the surface in contact with the medium is Ra <0.76 µm (30 µin).
1)
52Endress+Hauser
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Deltabar FMD71, FMD72
H
d
M
D2
k
D1
2 (0.08)
R
d
M
D2
k
D1
H
H
d
M
D2
D1
k
105 (4.13)
15,5 (0.6)
H
d
M
D2
k
D1
I
K
Engineering unit mm (in)
A0021808
A0021810
J
A0021809
L
A0021811
ItemDescriptionNominal
pressure
D1D2Hole
circle-
DiaphragmHeightMaterialWeightOption
PNkd
INeumo
D25
1664 (2.52)30.4 (1.2)50 (1.97);
4 x, R 3.5
21.65
(0.85)
mm (0.14
in)
JNeumo
D50
1689.5 (3.52) 49.9 (1.96)70 (2.76);
4 x ø 9 mm
28 (1.10)1.2 (2.65)S4J
(0.35 in)
KDRD2564.5 (2.54) 52.5 (2.07)84 (3.31);
28 (1.10)1.0 (2.21)TIJ
4 x ø 11.5
mm (0.45
in)
LAPV Inline 1099.5 (3.92) 64 (2.52)82 (3.23);
28 (1.10)1.2 (2.65)TMJ
6 x ø 8.6
mm (0.34
in) + 2 x
M8
1)The roughness of the surface in contact with the medium is Ra <0.76 µm (30 µin).
1)
M
Hkg (lbs)
max. 40
(1.57)
AISI 316L
(1.4435)
0.8 (1.76)S1J
Endress+Hauser53
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Wall and pipe mounting with
52 (2.05)
ø52 (2.05)
ø40 (1.57)
84 (3.31)
131 (5.16)
90 (3.54)
90 (3.54)
140 (5.51)
175 (6.89)
122 (4.8)
ø6,4 (0.25)
122 (4.8)
86 (3.39)
158 (6.22)
ø6 (0.24)
ø42...60 (1.65...2.36)
70 (2.76)
mounting bracket
Deltabar FMD71, FMD72
Engineering unit mm (in)
Weight kg (lbs)Option
HousingMounting bracket
→ 310.5 (1.1)PA
1)Product Configurator order code for "Process connection"
Also available for order as a separate accessory: part number 71102216
A0016495
1)
54Endress+Hauser
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Deltabar FMD71, FMD72
Materials in contact with
process
NOTICE
Device components in contact with the process are listed in the "Mechanical construction"
‣
→ 30 and "Ordering information" sections.
TSE Certificate of Suitability
The following applies to all device components in contact with the process:
• They do not contain any materials derived from animals.
• No additives or operating materials derived from animals are used in production or processing.
Process connections
• Endress+Hauser supplies DIN/EN flanges and threaded connection in stainless steel as per AISI
316L (DIN/ EN material number 1.4404 or 1.4435). With regard to their stability-temperature
property, the materials 1.4404 and 1.4435 are grouped together under 13E0 in EN 1092-1: 2001
Tab. 18. The chemical composition of the two materials can be identical.
• "Clamp connections" and "Hygienic process connections": AISI 316L (DIN/EN material number
1.4435)
• Some process connections are also available in Alloy C276 (DIN/EN material number 2.4819). For
this purpose see the information in the "Mechanical construction" section.
Process isolating diaphragm
Sensor DescriptionOption
FMD71 Al2O3 aluminum oxide ceramic FDA
FMD72 AISI 316L (DIN/EN material number 1.4435)A
FMD72 AlloyC (on request)B
2)
, Ceraphire® (see also www.endress.com/ceraphire)-
1)
1)Product Configurator order code for "Process connection"
2)The US Food & Drug Administration (FDA) has no objections to the use of ceramics made from aluminum
oxide as a surface material in contact with foodstuffs. This declaration is based on supporting documents
from the FDA furnished by our ceramic suppliers.
Filling oil
DescriptionOption
Silicone oil1
Inert oil (on request)2
Synthetic oil, FDA3
1)Product Configurator order code for "Process connection"
1)
Endress+Hauser55
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Deltabar FMD71, FMD72
14
5
3
3
15
6
8
13
9
10
11
12
4
1
7
2
2
Materials not in contact with
process
T14 transmitter housing
A0016496
Item number Component partMaterial
1T14 housing, RAL 5012 (blue)Die-cast aluminum with protective powder-coating on
polyester base
T14 housingPrecision cast AISI 316L (1.4435)
2Cover, RAL 7035 (gray)• Die-cast aluminum with protective powder-coating on
polyester base
• Coating on thread: Heat-curing lubricant varnish
Cover• Precision cast AISI 316L (1.4435)
• Coating on thread: Heat-curing lubricant varnish
3Cover sealEPDM
4NameplatesAISI 304 (1.4404)
5Pressure compensation filter, O-ringVMQ or EPDM
6Pressure compensation filterAISI 316L (1.4404) and PBT-FR
7External operation (keys and key
cover), RAL 7035 (gray)
8Cable entryPolyamide (PA)
SealSilicone (VMQ)
9Blind plugPBT-GF30 FR, for dust ignition-proof: AISI 316L
5Pressure compensation filterAISI 316L (1.4404) and PBT-FR
6Pressure compensation filter, O-ringVMQ or EPDM
7Sight glass for non-hazardous area, ATEX Ex ia,
8
9Sight glass sealEPDM
10ScrewA2-70
11Sealing ringEPDM
12Snap ringPA6
13ScrewA4-50
14External ground terminalAISI 304 (1.4301)
15Cable entry M20Polyamide PA, for dust ignition-proof:
16Seal of cable entry and plugSilicone (VMQ)
17Blind plugPBT-GF30 FR, for dust ignition-proof:
NEPSI Zone 0/1 Ex ia, IECEx Zone 0/1 Ex ia, FM NI,
FM IS, CSA IS
Polycarbonate (PC)
Coating on thread: Heat-curing
lubricant varnish
CuZn nickel-plated
AISI 316L (1.4435)
A0020021
Endress+Hauser57
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Deltabar FMD71, FMD72
1
24
5
6
7
3
1
4
2
5
36
4
Sensor modules
A0021295
Item number Component partMaterial
1Sensor module housing and cover Aluminum with protective powder-coating on polyester base
AISI 316L (1.4404)
2Pressure compensation filterPA6 GF10 or 316L (1.4404)
3Blind plugPBT-GF30 FR, for dust ignition-proof: AISI 316L (1.4435)
SealSilicone (VMQ)
4Conduit adapter NPT ½"316L
5Snap ring for coverPP
6Earth connection box316L
7NameplatesPlastic film
Connecting parts
Item numberComponent partMaterial
1Mounting bracketBracket AISI 316L (1.4404)
2Screw and nuts A4-70
3Half-shells: AISI 316L (1.4404)
4M12 connectorPP and stainless steel
5Cable for transmitter connectionPE-X halogen-free
6Cable for sensor connectionPE-X halogen-free
A0016497
58Endress+Hauser
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Deltabar FMD71, FMD72
Operability
Operating conceptOperator-oriented menu structure for user-specific tasks
• Commissioning
• Operation
• Diagnosis
• Expert level
Fast and safe commissioning
Guided menus for applications
Reliable operation
• Local operation possible in up to two languages
• Standardized operation at the device and in the operating tools
• Parameters relating to measured values can be locked/unlocked using the device's write protection
switch, using the device software or via remote operation.
Operating the device using onsite display (optional)
A 4-line liquid crystal display (LCD) is used for display and operation. The onsite display shows
measured values, dialog text as well as fault and notice messages in plain text, thereby supporting
the user in every stage of operation.
The display can be removed for easy operation.
The device display can be turned in 90° steps.
Depending on the installation position of the device, this makes it easy to operate the device and
read the measured value.
Functions:
• 8-digit measured value display incl. sign and decimal point, bar graph for 4 to 20 mA HART as
current display.
• Simple and complete menu guidance due to breakdown of parameters into several levels and
groups.
• Each parameter is given a 3-digit ID number for easy navigation.
FunctionExternal operation
(operating keys, optional)
correction)
at the device
Device reset
(only if display is connected)
(only if display is connected)
(only if display is connected)
¾
Internal
operation
(electronic
insert)
Onsite display
(optional)
Endress+Hauser59
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Deltabar FMD71, FMD72
1
3
2
4
5
E
+
–
• Possibility of configuring the display in accordance with individual wishes and requirements e.g.
language, alternating display, display of other measured values, such as sensor temperature,
contrast setting
1Operating keys
2Bargraph
3Symbol
4Header
5Parameter ID number
Operating keys on the exterior of the device
With the T14 housing (aluminum or stainless steel), the operating keys are located either outside of
the housing, under the protection cap or inside on the electronic insert. In addition, devices with an
onsite display and a 4 to 20 mA HART electronic insert have operating keys on the onsite display.
A0016499
The operating keys on the outside of the device make it unnecessary to open the housing. This
guarantees:
• Complete protection against environmental influences such as moisture and contamination
• Simple operation without any tools.
• No wear.
60Endress+Hauser
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Deltabar FMD71, FMD72
on
off
damp.
Display
Sensor
HART
R
FIELD COMMUNICATION PROTOCOL
SW /min
t
on
off
1 2
3
4
5
6
SW/min
78
Operating keys and elements located internally on the electronic insert
A0016500
1DIP switch for locking/unlocking parameters relevant to the measured value
2DIP switch for switching damping on/off
3DIP switch for alarm current SW/Alarm min (3.6 mA)
4...5 Not assigned
6Green LED to indicate value being accepted
7Operating keys
8Slot for optional display
Operating languages
You can also choose another language in addition to the standard language "English":
The device meets the legal requirements of the relevant EC directives. Endress+Hauser confirms that
the device has been successfully tested by applying the CE mark.
• ATEX
• FM
• CSA
• IECEx
• NEPSI
All explosion protection data are given in separate documentation which is available upon request.
Ex documentation is supplied as standard with all devices approved for use in hazardous areas .
All materials in contact with foodstuffs comply with framework regulation (EC) 1935/2004. The
device is available with hygienic process connections (overview: see order code).
CAUTION
L
Contamination in the process!
Risk of contamination if incorrect seals and parts are used!
To avoid the risk of contamination, when installing the device comply with the design principles
‣
of EHEDG, Guideline 37 "Hygienic Design and Application of Sensors" and Guideline 16 "Hygienic
Pipe Couplings".
Suitable assemblies and seals must be used to ensure hygienic design in accordance with 3-A SSI
‣
and EHEDG specifications.
The leak-proof connections can be cleaned with the cleaning methods typical of this industry
‣
(CIP and SIP). Attention must be paid to the pressure and temperature specifications of the
sensor and process connections for CIP and SIP processes (clean in place/sterilize in place).
Pressure Equipment
Directive (PED)
Other standards and
guidelines
The seamless connections can be cleaned of all residue using any of the typical cleaning
methods within this industry.
A0025601
The device corresponds to Article 3 (3) of the EC directive 97/23/EC (Pressure Equipment Directive)
and has been designed and manufactured in accordance with good engineering practice or complies
with Category I or II, SEP.
The applicable European guidelines and standards can be found in the relevant EU Declarations of
Conformity. The following were also applied:
EN 60529:
Degrees of protection provided by enclosures (IP code)
DIN EN 60770 (IEC 60770):
Transmitters for use in industrial process control systems Part 1: Methods for performance
evaluation
Methods for evaluating the performance of transmitters for control and regulation in industrial
process control systems.
DIN 16086:
Electrical pressure measuring instruments, pressure sensors, pressure transmitters, pressure
measuring instruments, concepts, specifications on data sheets
Procedure for writing specifications in data sheets for electrical pressure measuring instruments,
pressure sensors and pressure transmitters.
62Endress+Hauser
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Deltabar FMD71, FMD72
EN 61326-X:
EMC product family standard for electrical equipment for measurement, control and laboratory use.
NAMUR - User association of automation technology in process industries.
NE21 - Electromagnetic Compatibility (EMC) of Industrial Process and Laboratory Control
Equipment.
NE43 - Standardization of the Signal Level for the Failure Information of Digital Transmitters.
NE32 - Data Retention in the Event of a Power Failure in Field and Control Instruments with
Microprocessors
NE44 - Standardization of Status Indicators on PCT Instruments with the Help of Light Emitting
Diodes
NE53 - Software of Field Devices and Signal-processing Devices with Digital Electronics
NE107 - Self-monitoring and Diagnosis of Field Devices
CRN approval
Classification of process
sealing between electrical
systems and (flammable or
combustible) process fluids
in accordance with ANSI/ISA
12.27.01
Calibration unit
A CRN approval is available for some device versions. A CRN-approved process connection with a
CSA approval must be ordered for a CRN-approved device. The CRN-approved devices are assigned a
registration number.
Ordering information: Product Configurator order code for "Process connection" (the CRN process
connections are indicated appropriately in the "Mechanical construction" section.)
Endress+Hauser devices are designed in accordance with ANSI/ISA 12.27.01. allowing the user to
waive the use and save the cost of installing external secondary process seals in the conduit as
required by the process sealing sections of ANSI/NFPA 70 (NEC) and CSA 22.1 (CEC). These
instruments comply with the North American installation practice and provide a very safe and costsaving installation for pressurized applications with hazardous fluids. Please refer to the following
table for the seal class assigned (single seal or dual seal):
DeviceApprovalSingle seal MWP
Deltabar FMD71/FMD72CSA, FM IS, XP, NI40 bar (580psi)
Further information can be found in the control drawings of the relevant devices.
DescriptionOption
Level range; %A
Differential pressure range; mbar/barB
Differential pressure range; kPa/MPaC
Differential pressure range; mm/mH2OD
Differential pressure range; inH2O/ftH2OE
Differential pressure range; psiF
Customer-specific level; see additional specK
Customer-specific pressure; see additional spec.J
1)
1)Product Configurator order code for "Calibration; unit"
Calibration
Inspection certificates
DescriptionOption
Factory calibration certificate, 5-pointF1
1)Product Configurator order code for "Calibration"
DescriptionOption
3.1 Material documentation, wetted metal parts, EN10204-3.1 inspection certificateYES
Declaration of Conformity NACE MR0175, wetted metal partsJB
1)Product Configurator order code for "Test, certificate"
1)
64Endress+Hauser
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Deltabar FMD71, FMD72
Ordering information
Detailed ordering information is available from the following sources:
• In the Product Configurator on the Endress+Hauser website: www.endress.com→ Select country→
Products→ Select product→ Product page function: Configure this product
• From your Endress+Hauser Sales Center: www.endress.com/worldwide
Product Configurator - the tool for individual product configuration
• Up-to-the-minute configuration data
• Depending on the device: Direct input of information specific to measuring point, e.g.
measuring range
• Automatic verification of exclusion criteria
• Automatic creation of the order code and its breakdown in PDF or Excel output format
• Ability to order directly from the Endress+Hauser Online Shop
Scope of delivery
• Measuring device
• Optional accessories
• Brief Operating Instructions
• Certificates
Endress+Hauser65
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Supplementary documentation
Deltabar FMD71, FMD72
Field of Activities
Technical Information
Operating Instructions
Brief Operating Instructions
Safety Instructions (XA)
Pressure measurement, powerful instruments for process pressure, differential pressure, level and
flow:
FA00004P/00/EN
EMC test procedures TI00241F/00/EN
BA01044P/00/EN
KA01105P/00/EN - Brief Operating Instructions for devices
SD00354P/00/A2 - Screening with Cable Shield
Safety Instructions (XA) are supplied with the device depending on the approval. These instructions
are an integral part of the Operating Instructions.
DeviceDirectiveDocumentationOption
FMD71, FMD72ATEX II 1/2G Ex ia IIC T6 Ga/GbXA00619PBA
FMD71, FMD72ATEX II 1/2G Ex d [ia] IIC T6 Ga/GbXA00620PBC
FMD71, FMD72ATEX II 3G Ex nA IIC T6 GCXA00621PBD
FMD71, FMD72IEC Ex ia IIC T6 Ga/GbXA00622PIA
FMD71, FMD72IEC Ex d [ia] IIC T6 Ga/GbXA00623PIB
FMD71, FMD72CSA General Purpose-CD
FMD71, FMD72NEPSI Ex ia IIC T4/T6 Ga/GbXA01352PNA
FMD71, FMD72NEPSI Ex d [ia] IIC T4/T6 Ga/GbXA01352PNB
FMD71FM C/US IS Cl.I Div.1 Gr.A-D, AEx ia, Zone 0,1,2XA00628PFA
FMD71FM C/US XP AIS Cl.I Div.1 Gr.A-D, Exd [ia] Zone 0,1,2XA00629PFB
FMD71CSA C/US XP Cl.I Div.1 Gr.A-D, Ex d [ia], Zone 0,1,2XA00631PCB
FMD71FM C/US NI Cl.I Div.2 Gr.A-D, Zone 2XA00668PFD