Deltabar S FMD77, FMD78, PMD75 with FOUNDATION Fieldbus
Order code:
Ext. ord. cd.:
Ser. no.:
www.endress.com/deviceviewer
Endress+Hauser
Operations App
XXXXXXXXXXXX
XXXXX-XXXXXX
XXX.XXXX.XX
Serial number
1.
3.
2.
A0023555
Make sure the document is stored in a safe place such that it is always available when
working on or with the device.
To avoid danger to individuals or the facility, read the "Basic safety instructions" section
carefully, as well as all other safety instructions in the document that are specific to
working procedures.
The manufacturer reserves the right to modify technical data without prior notice. Your
Endress+Hauser Sales Center will supply you with current information and updates to these
Instructions.
2Endress+Hauser
Deltabar S FMD77, FMD78, PMD75 with FOUNDATION Fieldbus
Document informationDeltabar S FMD77, FMD78, PMD75 with FOUNDATION Fieldbus
DANGER
WARNING
CAUTION
NOTICE
)
1Document information
1.1Document function
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.
1.2Symbols used
1.2.1Safety symbols
SymbolMeaning
DANGER!
A0011189-DE
A0011190-DE
A0011191-DE
A0011192-DE
This symbol alerts you to a dangerous situation. Failure to avoid this situation will result in
seriousor fatal injury.
WARNING!
This symbol alerts you to a dangerous situation. Failure to avoid this situation can result in
seriousor fatal injury.
CAUTION!
This symbol alerts you to a dangerous situation. Failure to avoid this situation can result in
minoror medium injury.
NOTICE!
This symbol contains information on procedures and other facts which do not result in
personalinjury.
1.2.2Electrical symbols
Symbol MeaningSymbol Meaning
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.
1.2.3Tool symbols
Symbol Meaning
Allen key
A0011221
Hexagon wrench
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.
A0011222
4Endress+Hauser
Deltabar S FMD77, FMD78, PMD75 with FOUNDATION FieldbusDocument information
,…,
1.
2.
3.
,…,
1.
2.
3.
1.2.4Symbols for certain types of information
Symbol Meaning
Permitted
Indicates procedures, processes or actions that are permitted.
A0011182
Forbidden
Indicates procedures, processes or actions that are forbidden.
A0011184
Tip
Indicates additional information.
A0011193
Reference to documentation
A0015482
Reference to page
A0015484
Reference to graphic
A0015487
Series of steps
A0031595
Result of a sequence of actions
A0018343
Visual inspection
A0015502
1.2.5Symbols in graphics
Symbol Meaning
1, 2, 3, 4, ...Item numbers
Series of steps
A0031595
A, B, C, D, ...Views
1.2.6Symbols at the device
SymbolMeaning
Safety instructions
Observe the safety instructions contained in the associated Operating Instructions.
A0019159
1.3Registered trademarks
KALREZ, VITON, TEFLON
Registered trademarks of E.I. Du Pont de Nemours & Co., Wilmington, USA
TRI-CLAMP
Registered trademark of Ladish & Co., Inc., Kenosha, USA
®
TM
Fieldbus
FOUNDATION
Registered trademark of the FieldComm Group, Austin, USA
GORE-TEX
Registered trademarks of W.L. Gore & Associates, Inc., USA
Endress+Hauser5
Document informationDeltabar S FMD77, FMD78, PMD75 with FOUNDATION Fieldbus
URLOPLMWP
LRL
0
p
LRV
URV
1
2
3
4
1.4Terms and abbreviations
A0029505
Position Term/AbbreviationExplanation
1OPLThe OPL (over pressure limit = sensor overload limit) for the 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 pressuretemperature dependency. For the relevant standards and additional notes,
see technical information.
The OPL may be applied for a limited time period.
2MWPThe MWP (maximum working pressure) for the sensors 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 notes, see technical information.
The MWP may be applied for an unlimited time.
3Maximum sensor
measuring range
4Calibrated/Adjusted
measuring span
p-Pressure
-LRLLower range limit
-URLUpper range limit
-LRVLower range value
-URVUpper range value
-TDTurn down
Range between LRL and URL
This span is the maximum calibratable/adjustable measuring span.
Range between LRV and URV
Factory setting: 0...URL
Other calibrated spans can be ordered with customised settings.
6Endress+Hauser
Deltabar S FMD77, FMD78, PMD75 with FOUNDATION FieldbusDocument information
LRV
URLURV
LRL
1 = 2
3
1.5Turn down calculation
A0029545
Fig. 1:
1Calibrated/Adjusted measuring span
2Zero-based span
3Upper range limit
Example
• Sensor: 10 bar (150 psi)
• Upper range limit (URL) = 10 bar (150 psi)
Turn down (TD):
TD =
|URV-LRV|
URL
• Calibrated/Adjusted measuring span: 0...5 bar
(0...75 psi)
• Lower range value (LRV) = 0 bar
• Upper range value (URV) = 5 bar (75 psi)
TD =
In this example, the TD is thus 2:1.
This span is based on the zero point.
|5 bar (75 psi)-0 bar (0 psi)|
10 bar (150 psi)
=2
Endress+Hauser7
Basic safety instructionsDeltabar S FMD77, FMD78, PMD75 with FOUNDATION Fieldbus
2Basic safety instructions
2.1Requirements concerning the staff
The personnel for installation, commissioning, diagnostics and maintenance must fulfill the
following requirements:
• Trained, qualified specialists: must have a relevant qualification for this specific function
and task
• Are authorized by the plant owner/operator
• Are familiar with federal/national regulations
• Before beginning work, the specialist staff must have read and understood the instructions
in the Operating Instructions and supplementary documentation as well as in the
certificates (depending on the application)
• Following instructions and basic conditions
The operating personnel must fulfill the following requirements:
• Being instructed and authorized according to the requirements of the task by the facility's
owner-operator
• Following the instructions in these Operating Instructions
2.2Designated use
The Deltabar S is a differential pressure transmitter for measuring differential pressure, flow
and level.
2.2.1Incorrect use
The manufacturer is not liable for damage caused by improper or non-designated use.
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.
2.3Workplace 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.
2.4Operational 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.
Conversions 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.
Repair
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.
8Endress+Hauser
Deltabar S FMD77, FMD78, PMD75 with FOUNDATION FieldbusBasic safety instructions
2.5Hazardous area
To eliminate a danger for persons or for the facility when the device is used in the hazardous
area (e.g. explosion protection, pressure vessel safety):
• Based on the nameplate, check whether the ordered device is permitted for the intended
use in the hazardous area.
• Observe the specifications in the separate supplementary documentation that is an
integral part of these Instructions.
2.6Product 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 they are safe to operate. It fulfills general safety requirements and legal requirements.
It also conforms to the EC directives listed in the device-specific EC declaration of conformity.
Endress+Hauser confirms this fact by applying the CE mark.
Endress+Hauser9
IdentificationDeltabar S FMD77, FMD78, PMD75 with FOUNDATION Fieldbus
Ser. no.:
Order code:
Ext. order code:
2
5
6
3
4
1
3Identification
3.1Product 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).
3.2Device designation
3.2.1Nameplates
• The MWP (maximum working pressure) is specified on the nameplate. This value refers
to a reference temperature of +20 °C (68°F) and may be applied to the device for an
unlimited time. Observe temperature dependency of the MWP. The pressure values
permitted at higher temperatures can be found in the standards EN 1092-1: 2001 Tab. 18
(With regard to their stability-temperature property, the materials 1.4435 and 1.4404 are
grouped together under 13EO 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.
• For PMD75, the MWP applies for the temperature ranges specified in the Technical
Information TI00382P in the "Ambient temperature range" and "Process temperature
limits" sections.
• The test pressure corresponds to the over pressure limit (OPL) of the device = MWP x 1.5.
• The Pressure Equipment Directive (2014/68/EU) uses the abbreviation "PS".
The abbreviation "PS" corresponds to the MWP (maximum working pressure) of the
measuring device.
Aluminium housing (T14/T15) and stainless steel housing (T14)
Fig. 2: Nameplate
1Device name
2Order code (for re-orders)
3Extended order code (complete)
4Technical data
5Serial number (for identification)
6Address of manufacturer
10Endress+Hauser
A0016056
Deltabar S FMD77, FMD78, PMD75 with FOUNDATION FieldbusIdentification
2
1
1
2
7
3
4
5
6
1
Ser. no.:
Order code:
Ext. ord. cd.:
Devices for use in hazardous areas are fitted with an additional nameplate.
A0021222
Fig. 3: Additional nameplate
1Approval-specific information
2Document number for safety instructions or drawing number
Devices suitable for oxygen applications or with PVDF process connection are fitted with an
additional nameplate.
A0022683
Fig. 4: Additional nameplate
1Application limits
Hygenic stainless steel housing (T17)
A0021552
Fig. 5: Nameplate
1Device name
2Address of manufacturer
3Order code (for re-orders)
4Extended order code (complete)
5Serial number (for identification)
6Technical data
7Approval-specific information and document number for safety instructions or drawing number
3.2.2Identifying the sensor type
See parameter "Sensor Meas.Type" in Operating Instruction BA00303P.
Endress+Hauser11
IdentificationDeltabar S FMD77, FMD78, PMD75 with FOUNDATION Fieldbus
3.3Scope of delivery
The scope of delivery comprises:
• Deltabar S differential pressure transmitter
• For PMD75 with side flanges made of AISI 316L or C22.8: additionally 2 vent valves, AISI
316L
• PMD75 with side flanges made of AISI 316L or C22.8 and side vent: additionally 4 locking
screws, AISI 316L
• For devices with the "HistoROM/M-DAT" option: CD-ROM with Endress+Hauser operating
program
• Optional accessories
Documentation supplied:
• Operating Instructions BA00301P and BA00303P are available via the Internet.
See: www.endress.com Download.
• Brief Operating Instructions KA01024P
• Fold-out brochure KA00252P
• Final inspection report
• Additional Safety Instructions with ATEX, IECEx and NEPSI devices
• Optional: factory calibration form, test certificates
3.4CE mark, Declaration of Conformity
The devices are designed to meet state-of-the-art safety requirements, have been tested and
left the factory in a condition in which they are safe to operate. The devices comply with the
applicable standards and regulations as listed in the EC Declaration of Conformity and thus
comply with the statutory requirements of the EC Directives. Endress+Hauser confirms the
conformity of the device by affixing to it the CE mark.
3.5Registered trademarks
KALREZ, VITON, TEFLON
Registered trademarks of E.I. Du Pont de Nemours & Co., Wilmington, USA
TRI-CLAMP
Registered trademark of Ladish & Co., Inc., Kenosha, USA
FOUNDATION
Registered trademark of the Fieldbus Foundation Austin, Texas, USA
TM
Fieldbus
12Endress+Hauser
Deltabar S FMD77, FMD78, PMD75 with FOUNDATION FieldbusInstallation
NOTICE
WARNING
!
1
4Installation
Incorrect handling!
Damage of the device!
‣ Disassembly of the screws with item number (1) is not permissible under any
circumstances and will result in loss of warranty.
A0025336
4.1Incoming acceptance and storage
4.1.1Incoming acceptance
• Check the packaging and the contents for damage.
• Check the shipment, make sure nothing is missing and that the scope of supply matches
your order.
4.1.2Transport
Incorrect transport
Housing and diaphragm may be damaged and and there is a risk of injury!
‣ Transport the measuring device to the measuring point in its original packaging or by the
process connection (with secure transport protection for the diaphragm).
‣ Follow the safety instructions and transport conditions for devices of more than 18 kg
(39.69 lbs).
‣ Do not use capillaries as a carrying aid for the diaphragm seals.
4.1.3Storage
The device must be stored in a dry, clean area and protected against impact (EN 837-2).
Storage temperature range:
• –40 to +90°C (–40 to +194 °F)
• Onsite display: –40 to +85°C (–40 to +185°F)
• Separate housing: –40 to +60°C (–40 to +140°F)
4.2Installation conditions
4.2.1Dimensions
For dimensions, please refer to the Technical Information for Deltabar S TI00382P,
"Mechanical construction" section.
Endress+Hauser13
InstallationDeltabar S FMD77, FMD78, PMD75 with FOUNDATION Fieldbus
➀
➂
➃
+
–
➁
4.3Installation instructions
• Due to the orientation of the Deltabar S, there may be a shift in the measured value, i.e.
when the container is empty or partially full, the measured value does not display zero. You
can correct this zero point shift using the "Zero" key on the electronic insert or externally
on the device or via the onsite display. ä 36, Section 6.2.1 "Position of the operating
elements", ä 37, Section 6.2.3 "Function of the operating elements – onsite display
connected" and ä 65, Section 7.5 "Position adjustment"..
• For FMD77 and FMD78, please refer to Section 4.3.4 "Installation instructions for devices
with diaphragm seals (FMD78)", ä 21.
• General recommendations for routing the pressure piping can be found in DIN 19210
"Methods for measurement of fluid flow; differential piping for flow measurement devices"
or the corresponding national or international standards.
• Using a three-way or five-way valve manifold allows for easy commissioning, installation
and maintenance without interrupting the process.
• When routing the pressure piping outdoors, ensure that sufficient antifreeze protection is
used, e.g. by using pipe heat tracing.
• Install the pressure piping with a monotonic gradient of at least 10%.
• To ensure optimal readability of the onsite display, it is possible to rotate the housing up
to 380°. ä 29, Section 4.3.9 "Rotating the housing".
• Endress+Hauser offers a mounting bracket for installing on pipes or walls.
ä 26, Section 4.3.7 "Wall and pipe-mounting (optional)".
4.3.1Installation for flow measurement
Flow measurement in gases with PMD75
P01-PMD75xxx-11-xx-xx-xx-000
Fig. 6: Measuring arrangement for flow measurement in gases with PMD75
1Deltabar S, here PMD75
2Three-way valve manifold
3Shutoff valves
4Orifice plate or Pitot tube
• Mount the Deltabar S above the measuring point so that the condensate can run off into
the process piping.
14Endress+Hauser
Deltabar S FMD77, FMD78, PMD75 with FOUNDATION FieldbusInstallation
➀
➁
➃
+
–
➂
➅
➄
➆
➂
➅
➄
+
–
➀
➂
➅
➁
➃
➄
➁
➃
➄
Flow measurement in steam with PMD75
P01-PMD75xxx-11-xx-xx-xx-001
Fig. 7: Measuring arrangement for flow measurement in steam with PMD75
1Condensate traps
2Orifice plate or Pitot tube
3Shutoff valves
4Deltabar S, here PMD75
5Separator
6Drain valves
7Three-way valve manifold
• Mount the Deltabar S below the measuring point.
• Mount the condensate traps at the same level as the tapping points and at the same
distance to the Deltabar S.
• Prior to commissioning, fill the pressure piping to the level of the condensate traps.
Flow measurement in liquids with PMD75
P01-PMD75xxx-11-xx-xx-xx-002
Fig. 8: Measuring arrangement for flow measurement in liquids with PMD75
1Orifice plate or Pitot tube
2Shutoff valves
3Deltabar S, here PMD75
4Separator
5Drain valves
6Three-way valve manifold
• Mount the Deltabar S below the measuring point so that the pressure piping is always
filled with liquid and gas bubbles can run back into the process piping.
• When measuring in media with solid parts, such as dirty liquids, installing separators and
drain valves is useful for capturing and removing sediment.
Endress+Hauser15
InstallationDeltabar S FMD77, FMD78, PMD75 with FOUNDATION Fieldbus
+
➃
➂
➀
➁
➄
p
atm
min.
p
atm
+
–
min.
max.
1
2
p
atm
p
atm
4.3.2Installation for level measurement
Level measurement in an open container with PMD75
P01-PMD75xxx-11-xx-xx-xx-003
Fig. 9: Measuring arrangement for level measurement in an open container with PMD75
1The negative side is open to atmospheric pressure
2Deltabar S, here PMD75
3Shutoff valve
4Separator
5Drain valve
• Mount the Deltabar S below the lower measuring connection so that the pressure piping
is always filled with liquid.
• The negative side is open to atmospheric pressure.
• When measuring in media with solid parts, such as dirty liquids, installing separators and
drain valves is useful for capturing and removing sediment.
Level measurement in an open container with FMD77
A0024164
Fig. 10: Measuring arrangement for level measurement in an open container with FMD77
1Deltabar S, here FMD77
2The negative side is open to atmospheric pressure
• Mount the Deltabar S directly on the container. ä 23, Section 4.3.5 "Seal for flange
mounting".
• The negative side is open to atmospheric pressure.
16Endress+Hauser
Deltabar S FMD77, FMD78, PMD75 with FOUNDATION FieldbusInstallation
+
–
➀
➂
➃
➄
➁
➀
➂
➃
min.
max.
+
–
min.
max.
1
2
3
4
Level measurement in a closed container with PMD75
P01-PMD75xxx-11-xx-xx-xx-004
Fig. 11: Measuring arrangement for level measurement in a closed container with PMD75
• Mount the Deltabar S below the lower measuring connection so that the pressure piping
is always filled with liquid.
• Always connect the impulse piping of negative side above the maximum level.
• When measuring in media with solid parts, such as dirty liquids, installing separators and
drain valves is useful for capturing and removing sediment.
Level measurement in a closed container with FMD77
A0024163
Fig. 12: Measuring arrangement for level measurement in a closed container with FMD77
Endress+Hauser17
1Shutoff valve
2Separator
3Drain valve
4Deltabar S, here FMD77
• Mount the Deltabar S directly on the container. ä 23, Section 4.3.5 "Seal for flange
mounting".
• Always connect the impulse piping of negative side above the maximum level.
• When measuring in media with solid parts, such as dirty liquids, installing separators and
drain valves is useful for capturing and removing sediment.
InstallationDeltabar S FMD77, FMD78, PMD75 with FOUNDATION Fieldbus
+
–
➀
min.
max.
+
–
➂
➀
➁
➃
➄
➅
➃
➄
min.
max.
➁
Level measurement in a closed container with FMD78
P01-FMD78xxx-11-xx-xx-xx-000
Fig. 13: Measuring arrangement for level measurement in a closed container with FMD78
1Deltabar S, here FMD78
• Mount the Deltabar S below the lower diaphragm seal. ä 21, Section 4.3.4 "Installation
instructions for devices with diaphragm seals (FMD78)".
• The ambient temperature should be the same for both capillaries.
Level measurement is only ensured between the upper edge of the lower diaphragm seal and
the lower edge of the upper diaphragm seal.
Level measurement in a closed container with superimposed steam with PMD75
P01-PMD75xxx-11-xx-xx-xx-005
Fig. 14: Measuring arrangement for level measurement in a container with superimposed steam with PMD75
• Mount the Deltabar S below the lower measuring connection so that the pressure piping
is always filled with liquid.
• Always connect the impulse piping of negative side above the maximum level.
• A condensate trap ensures constant pressure on the negative side.
• When measuring in media with solid parts, such as dirty liquids, installing separators and
drain valves is useful for capturing and removing sediment.
18Endress+Hauser
Deltabar S FMD77, FMD78, PMD75 with FOUNDATION FieldbusInstallation
+
–
min.
max.
3
4
2
1
5
+
➂
➀
➁
➂
➃
Level measurement in a closed container with superimposed steam with FMD77
A0024162
Fig. 15: Measuring arrangement for level measurement in a container with superimposed steam with FMD77
• Mount the Deltabar S directly on the container. ä 23, Section 4.3.5 "Seal for flange
mounting".
• Always connect the impulse piping of negative side above the maximum level.
• A condensate trap ensures constant pressure on the negative side.
• When measuring in media with solid parts, such as dirty liquids, installing separators and
drain valves is useful for capturing and removing sediment.
4.3.3Installation for differential pressure measurement
Differential pressure measurement in gases and steam with PMD75
P01-PMD75xxx-11-xx-xx-xx-006
Fig. 16: Measuring arrangement for differential pressure measurement in gases and steam with PMD75
• Mount the Deltabar S below the measuring point so that the pressure piping is always
filled with liquid and gas bubbles can run back into the process piping.
• When measuring in media with solid parts, such as dirty liquids, installing separators and
drain valves is useful for capturing and removing sediment.
Differential pressure measurement in gases, steam and liquids with FMD78
P01-FMD78xxx-11-xx-xx-xx-000
Fig. 18: Measuring arrangement for differential pressure measurement in gases, steam and liquids with FMD78
1Diaphragm seal
2Capillary
3e.g. filter
4Deltabar S, here FMD78
• Mount the diaphragm seal with capillaries at the top or on the side on the piping.
• For vacuum applications: mount the Deltabar S below the measuring point. ä 22,
Section 4.3.4, "Vacuum application (FMD78)".
• The ambient temperature should be the same for both capillaries.
20Endress+Hauser
Deltabar S FMD77, FMD78, PMD75 with FOUNDATION FieldbusInstallation
NOTICE
NOTICE
+ –
+
–
≥ 100 mm
4.3.4Installation instructions for devices with diaphragm seals
(FMD78)
• Please note that the hydrostatic pressure of the liquid columns in the capillaries can cause
zero point shift. The zero point shift can be corrected.
• Do not clean or touch the process isolating diaphragm of the diaphragm seal with hard or
pointed objects.
• Do not remove process isolating diaphragm protection until shortly before installation.
Improper handling!
Damage to the device!
‣ A diaphragm seal and the pressure transmitter together form a closed, oil-filled
calibrated system. The fill fluid hole is sealed and may not be opened.
‣ When using a mounting bracket, sufficient strain relief must be ensured for the
capillaries in order to prevent the capillary bending down (bending radius 100
(3.94 in)).
‣ Please observe the application limits of the diaphragm seal filling oil as detailed in the
Technical Information for Deltabar S TI00382P, "Planning instructions for diaphragm
seal systems" section.
In order to obtain more precise measurement results and to avoid a defect in the device,
mount the capillaries as follows:
‣ Vibration-free (in order to avoid additional pressure fluctuations)
‣ Not in the vicinity of heating or cooling lines
‣ Insulate if the ambient temperature is below or above the reference temperature
‣ With a bending radius of 100 mm (3.94 in).
‣ Do not use the capillaries as a carrying aid for the diaphragm seals!
‣ The ambient temperature and length of both capillaries should be the same when using
two-sided diaphragm seal systems.
‣ Two diaphragm seals which are the same (e.g. with regard to diameter, material, etc.)
should always be used for the negative and positive side (standard delivery).
P01-FMD78xxx-11-xx-xx-xx-005
Fig. 19: Mounting Deltabar S, FMD78 with diaphragm seals and capillaries, recommended mounting for vacuum applications:
Endress+Hauser21
mount pressure transmitter below the lowest diaphragm seal!
InstallationDeltabar S FMD77, FMD78, PMD75 with FOUNDATION Fieldbus
+
–
H1
1
2
3
4
5
A
B
0.0
2.0
4.0
6.0
8.0
10.0
12.0
50 100300 400 500 600700800 900 1000200
[mbar ]
abs
[m]
Vacuum application (FMD78)
For applications under vacuum, Endress+Hauser recommends mounting the pressure
transmitter below the diaphragm seal. This prevents vacuum loading of the diaphragm seal
caused by the presence of fill fluid in the capillary.
When the pressure transmitter is mounted above the diaphragm seal, the maximum height
difference H1 in accordance with the illustrations below must not be exceeded.
Fig. 20: Installation above the lower diaphragm seal
The maximum height difference depends on the density of the filling oil and the smallest
ever pressure that is permitted to occur at the diaphragm seal (empty vessel), see illustration
below:
Fig. 21: Diagram of maximum installation height above the lower diaphragm seal for vacuum applications depending on the
AHeight difference H1
BPressure at diaphragm seal
1Low temperature oil
2Vegetable oil
3Silicone oil
4High-temperature oil
5Inert oil
pressure at the diaphragm seal on the positive side
A0023986-en
A0023983
22Endress+Hauser
Deltabar S FMD77, FMD78, PMD75 with FOUNDATION FieldbusInstallation
NOTICE
12
4.3.5Seal for flange mounting
Distorted measurement results.
The seal is not allowed to press on the process isolating diaphragm as this could affect the
measurement result.
‣ Ensure that the seal is not touching the process isolating diaphragm.
A0017743
Fig. 22:
1Process isolating diaphragm
2Seal
Endress+Hauser23
InstallationDeltabar S FMD77, FMD78, PMD75 with FOUNDATION Fieldbus
30 (1.18)
T
a
T
P
53 (2.09)
A
C
B
D
100 (3.94)
77 (3.03)
A, B
T
a
T
P
T
1
1
1
1
p
T
a
+32
60
55
+85
50
45
140
131
+185122
113
200
85
−70
300
392
185
+32
−40
−94
572
+400+752
T
a
[°C]
[°F]
[°C][°F]
T
p
A
B
D
−−−403530
−−−403122
0
0
−40
C
C, D
4.3.6Heat insulation – FMD77
The FMD77 must only be insulated up to a certain height. The maximum permitted
insulation height 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 data were
determined under the most critical application "quiescent air".
A0025889
1)
Fig. 23: Maximum insulation height
1Insulation material
Without insulation, the ambient temperature decreases by 5 K.
PositionDesignTemperature isolatorOption
ATransmitter horizontallylongMA
BTransmitter vertical longMB
CTransmitter horizontallyshortMC
DTransmitter vertical shortMD
1) Product Configurator, order code for "Process connection"
24Endress+Hauser
Deltabar S FMD77, FMD78, PMD75 with FOUNDATION FieldbusInstallation
T
U
T
P
E
+
–
100 (3.94)
1
A0023984
Fig. 24: Maximum insulation height
1Insulation material
Position DesignAmbient temperature T
EU-bracket, Transmitter horizontally
70 °C (158 °F)max. 350 °C (662 °F) , depending on
1) Product Configurator, order code for "Process connection"
2) In combination with CSA approval.
1)
Endress+Hauser25
InstallationDeltabar S FMD77, FMD78, PMD75 with FOUNDATION Fieldbus
4.3.7Wall and pipe-mounting (optional)
Endress+Hauser offers the following mounting brackets for installing the device on pipes or
walls:
Standard designHeavy duty design
A0031326A0031327
The standard mounting bracket version is not suitable for use in an application subject to
vibrations.
The vibration resistance of the reinforced version of the mounting bracket has been tested
according to IEC 61298-3, see the "Vibration resistance" section in the technical
documentation TI00382P.
When using a valve block, the block's dimensions must be taken into account.
Bracket for wall and pipe mounting including retaining bracket for pipe mounting and two
nuts.
material of the screws used to secure the device depend on the order code.
Technical data (e.g. dimensions or order numbers for screws) see accessory document
SD01553P/00/EN.
Please note the following when mounting:
• To prevent the mounting screws from scoring, lubricate them with a multi-purpose grease
prior to mounting.
• In the case of pipe mounting, the nuts on the bracket must be tightened uniformly with a
torque of at least 30 Nm (22.13 lbf ft).
• For installation purposes, only use the screws with item number (2) (see the following
diagram).
26Endress+Hauser
Deltabar S FMD77, FMD78, PMD75 with FOUNDATION FieldbusInstallation
NOTICE
1
2
1
2
Incorrect handling!
Damage of the device!
‣ Disassembly of the screws with item number (1) is not permissible under any
circumstances and will result in loss of warranty.
A0025335
Endress+Hauser27
InstallationDeltabar S FMD77, FMD78, PMD75 with FOUNDATION Fieldbus
r ³ 120 mm
1
2
4
5
6
7
4.3.8Assembling and mounting the "separate housing" version
P01-xMD7xxxx-11-xx-xx-xx-011
Fig. 25: "Separate housing" version
1In the "separate housing" version, the sensor is supplied with the process connection and cable ready-fitted.
2Cable with connection jack
4Plug
5Locking screw
6Housing fitted with housing adapter, included
7Mounting bracket suitable for wall and pipe mounting, included
Assembly and mounting
1.Insert the 10-pin connector (item 4) into the corresponding connection jack of the cable
(item 2).
2.Plug the cable into the housing adapter (item 6).
3.Tighten the locking screw (item 6).
4.Mount the housing on a wall or pipe using the mounting bracket (item 7).
When mounting on a pipe, tighten the nuts on the bracket uniformly with a torque of
at least 5 Nm (3.69 lbs ft).
Mount the cable with a bending radius (r) 120 mm (4.72 in).
28Endress+Hauser
Deltabar S FMD77, FMD78, PMD75 with FOUNDATION FieldbusInstallation
NOTICE
NOTICE
T14
T15
T17
23
+
–
4.3.9Rotating the housing
The housing can be rotated up to 380° by loosening the Allen screw.
A0019996
1. T14 housing: Loosen setscrew with a 2 mm (0.08 in) Allen key.
T15 andT17 housing: Loosen setscrew with a 3 mm (0.12 in) Allen key.
2. Rotate housing (max. up to 380 °).
3. Retighten setscrew with 1 Nm (0,74 lbf ft.
4.3.10Closing the housing cover
Devices with EPDM cover seal - transmitter leakiness!
Mineral-based, animal-based or vegetable-based lubricants cause the EPDM cover seal to
swell and the transmitter to become leaky.
‣ The thread is coated at the factory and therefore does not require any lubrication.
The housing cover can no longer be closed.
Damaged thread!
‣ When closing the housing cover, please ensure that the thread of the cover and housing
are free from dirt, e.g. sand.If you feel any resistance when closing the cover, check the
thread on both again to ensure that they are free from dirt.
Closing the covers on the hygienic stainless steel housing (T17)
Fig. 26: Closing the covers
The covers for the terminal and electronics compartment are hooked into the housing and
closed with a screw. These screws should be tightened handtight (2 Nm (1.48 lbf ft)) to the
stop to ensure that the covers sit tightly.
Endress+Hauser29
P01-PMD75xxx-17-xx-xx-xx-000
InstallationDeltabar S FMD77, FMD78, PMD75 with FOUNDATION Fieldbus
4.4Post-installation check
After installing the device, carry out the following checks:
• Are all screws firmly tightened?
• Are the housing covers screwed down tight?
• Are all locking screws and vent valves firmly tightened?
30Endress+Hauser
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