Endress+Hauser Deltabar M PMD55 Technical specifications

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Brief Operating Instructions
Deltabar M PMD55
Differential pressure measurement
FOUNDATION Fieldbus
Differential pressure transmitter with metallic
measuring cell
These Brief Operating Instructions are not a substitute for the
Operating Instructions pertaining to the device.
Detailed information about the device can be found in the
Operating Instructions and the additional documentation.
Available for all device versions via
• Internet: www.endress.com/deviceviewer
• Smartphone/tablet: Endress+Hauser Operations app
KA01029P/00/EN/06.21-00
71549529
2021-09-30

Associated documentation Deltabar M PMD55 FOUNDATION Fieldbus
2 Endress+Hauser
1 Associated documentation
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
2 About this document
2.1 Document function
The Brief Operating Instructions contain all the essential information from incoming
acceptance to initial commissioning.

Deltabar M PMD55 FOUNDATION Fieldbus About this document
Endress+Hauser 3
2.2 Symbols used
2.2.1 Safety symbols
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.
NOTICE
This symbol contains information on procedures and other facts which do not result in
personal injury.
2.2.2 Electrical symbols
Protective earth (PE)
Ground terminals that must be connected to ground prior to establishing any other
connections.
The ground terminals are located on the interior and exterior of the device:
• Interior ground terminal: protective earth is connected to the mains supply.
• Exterior ground terminal: device is connected to the plant grounding system.
2.2.3 Symbols for certain types of information and graphics
Symbols for certain types of information and graphics
Permitted
Procedures, processes or actions that are permitted
Forbidden
Procedures, processes or actions that are forbidden
Tip
Indicates additional information
Reference to documentation
A
Reference to page
Visual inspection
Notice or individual step to be observed

Basic safety instructions Deltabar M PMD55 FOUNDATION Fieldbus
4 Endress+Hauser
1, 2, 3, ...
Item numbers
1.
,
2.
,
3.
Series of steps
Result of a step
2.3 Registered trademarks
FOUNDATIONTM Fieldbus
Registered trademark of the FieldComm Group, Austin, USA
3 Basic safety instructions
3.1 Requirements for the personnel
Personnel must meet the following requirements for their tasks:
‣Trained, qualified specialists must be suitably qualified to perform this function and task
‣Are authorized by the plant owner/operator
‣Are familiar with federal/national regulations
‣They must have read and understood the instructions in the manual, supplementary
documentation and certificates (depending on the application) prior to starting work
‣They must follow instructions and comply with basic conditions
3.2 Intended use
The Deltabar M is a differential pressure transmitter for measuring differential pressure, flow
and level.
3.2.1 Foreseeable incorrect use
The manufacturer is not liable for damage caused by improper or non-intended 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.
3.3 Workplace safety
For work on and with the device:
‣Wear the required personal protective equipment according to federal/national
regulations.
‣Switch off the supply voltage before connecting the device.

Deltabar M PMD55 FOUNDATION Fieldbus Basic safety instructions
Endress+Hauser 5
3.4 Operational safety
Risk of injury!
‣Operate the device in proper technical condition and fail-safe condition only.
‣The operator is responsible for interference-free operation of the device.
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.
Hazardous 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.
3.5 Product safety
This measuring device is designed in accordance with good engineering practice to meet state-
of-the- art safety requirements, has been tested, and left the factory in a condition in which
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.

Incoming acceptance and product identification Deltabar M PMD55 FOUNDATION Fieldbus
6 Endress+Hauser
4 Incoming acceptance and product identification
4.1 Incoming acceptance
DELIVERY NOTE
1 = 2
A0016870
• Is the order code on the delivery note (1) identical to the order code on the product sticker
(2)?
• Are the goods undamaged?
• Do the data on the nameplate correspond to the order specifications and the delivery note?
• Is the documentation available?
• If required (see nameplate): Are the safety instructions (XA) present?
If one of these conditions is not fulfilled, please contact your Endress+Hauser sales office.
4.2 Storage and transport
4.2.1 Storage conditions
Use original packaging.
Store the measuring device in clean and dry conditions and protect from damage caused by
shocks (EN 837-2).
4.2.2 Transporting the product to the measuring point
LWARNING
Incorrect transport!
Housing and membrane may become damaged, and there is a risk of injury!
‣Transport the measuring device to the measuring point in its original packaging or by the
process connection.
‣Follow the safety instructions and transport conditions for devices weighing more than 18
kg (39.6 lbs).

Deltabar M PMD55 FOUNDATION Fieldbus Mounting
Endress+Hauser 7
5 Mounting
5.1 Mounting requirements
5.2 Installing the
NOTICE
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.
1
A0024166
5.2.1 Orientation
• Due to the orientation of the Deltabar M, there may be a shift in the measured value, i.e.
when the container is empty, the measured value does not display zero. You may correct
this zero point shift by a position adjustment in one of the following ways:
• Via the keys on the electronics module (→  16, "Function of the operating elements")
• Via the operating menu (, "Position adjustment")
• Refer to the relevant national or international standards for general recommendations on
laying the piping.
• Using a three-valve or five-valve manifold allows for easy commissioning, installation and
maintenance without interrupting the process.
• When routing the impulse piping outdoors, ensure that sufficient anti-freeze protection is
used, e.g. by using pipe heat tracing.
• Lay the piping with a monotonic gradient of at least 10 %.
• Endress+Hauser offers a mounting bracket for mounting on pipes or walls (, "Wall and pipe
mounting (optional)").
Installation position for flow measurement
Flow measurement in gases
Mount the Deltabar M above the measuring point so that the condensate which may be
present, can run off into the process piping.

Mounting Deltabar M PMD55 FOUNDATION Fieldbus
8 Endress+Hauser
Flow measurement in vapors
• Mount the Deltabar M below the measuring point.
• Mount the condensate traps at the same level as the tapping points and at the same
distance to the Deltabar M.
• Prior to commissioning, fill the impulse piping to the height of the condensate traps.
Flow measurement in liquids
• Mount the Deltabar M below the measuring point so that the impulse 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.
Installation position for level measurement
Level measurement in an open container
• Mount the Deltabar M below the lower measuring connection so that the impulse piping is
always filled with liquid.
• The low-pressure 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 a closed container
• Mount the Deltabar M below the lower measuring connection so that the impulse piping is
always filled with liquid.
• Always connect the low-pressure 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 superimposed steam
• Mount the Deltabar M below the lower measuring connection so that the impulse piping is
always filled with liquid.
• Always connect the low-pressure side above the maximum level.
• A condensate trap ensures constant pressure on the low-pressure side.
• When measuring in media with solid parts, such as dirty liquids, installing separators and
drain valves is useful for capturing and removing sediment.
Installation position for differential pressure measurement
Differential pressure measurement in gases and vapors
• Mount the Deltabar M above the measuring point so that the condensate which may be
present, can run off into the process piping.
• The low-pressure 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.

Deltabar M PMD55 FOUNDATION Fieldbus Mounting
Endress+Hauser 9
Differential pressure measurement in liquids
• Mount the Deltabar M below the measuring point so that the impulse 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.
5.2.2 Wall and pipe-mounting
Endress+Hauser offers the following mounting brackets for installing the device on pipes or
walls:
Standard design Heavy-duty version
A0031326 A0031327
The standard mounting bracket version is not suitable for use in an application subject to
vibrations.
The vibration resistance of the heavy-duty version of the mounting bracket has been
tested according to IEC 61298-3, see the "Vibration resistance" section in the Technical
Information.
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.
Technical data (e.g. dimensions or order numbers for screws) see accessory document
SD01553P/00/EN.

Mounting Deltabar M PMD55 FOUNDATION Fieldbus
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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).
NOTICE
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.
1
1
2
2
2
1
A0024167

Deltabar M PMD55 FOUNDATION Fieldbus Mounting
Endress+Hauser 11
Typical installation arrangements
1
1
2
4
3
1
2
3
3
4
C
AB
4
A0023109
A Impulse line vertical, version V1, alignment 90°
B Impulse line horizontal, version H1, alignment 180°
C Impulse line horizontal, version H2, alignment 90°
1 Deltabar M
2 Adapter plate
3 Mounting bracket
4 Pressure line

Electrical connection Deltabar M PMD55 FOUNDATION Fieldbus
12 Endress+Hauser
6 Electrical connection
6.1 Connecting requirements
6.1.1 Shielding/potential equalization
• You achieve optimum shielding against disturbances if the shielding is connected on both
sides (in the cabinet and on the device). If potential equalization currents are expected in
the plant, only ground shielding on one side, preferably at the transmitter.
• When using in hazardous areas, you must observe the applicable regulations.
Separate Ex documentation with additional technical data and instructions is included with
all Ex systems as standard. Connect all devices to the local potential equalization.
6.2 Connecting the device
LWARNING
Supply voltage might be connected!
Risk of electric shock and/or explosion!
‣Ensure that no uncontrolled processes are activated at the facility.
‣Switch off the supply voltage before connecting the device.
‣When using the measuring device in hazardous areas, installation must also comply with
the applicable national standards and regulations and the Safety Instructions or
Installation or Control Drawings.
‣In accordance with IEC/EN61010 a suitable circuit breaker must be provided for the device.
‣Devices with integrated overvoltage protection must be grounded.
‣Protective circuits against reverse polarity, HF influences and overvoltage peaks are
integrated.
Connect the device in the following order:
1. Check whether the supply voltage matches the supply voltage indicated on the
nameplate.
2. Switch off the supply voltage before connecting the device.
3. Remove the housing cover.
4. Guide the cable through the gland. Preferably use a twisted, shielded two-wire cable.
5. Connect the device as indicated in the following diagram.
6. Screw down the housing cover.
7. Switch on the supply voltage.

Deltabar M PMD55 FOUNDATION Fieldbus Electrical connection
Endress+Hauser 13
- +
1
1
2
3
4
A0029967
1 External ground terminal
2 Grounding terminal
3 FOUNDATION Fieldbus: Supply voltage: 9...32 VDC (Power conditioner)
4 Terminals for supply voltage and signal
6.2.1 Connection of devices with 7/8" plug
4
2
3
1
A0011176
1 Signal -
2 Signal +
3 Shielding
4 Not assigned

Operation options Deltabar M PMD55 FOUNDATION Fieldbus
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6.2.2 Supply voltage
FOUNDATION Fieldbus
Version for non-hazardous areas: 9 to 32 V DC
6.2.3 Current consumption
16 mA ±1 mA, switch-on current corresponds to IEC 61158-2, Clause 21.
6.2.4 Terminals
• Supply voltage and internal ground terminal: 0.5 to 2.5 mm2 (20 to 14 AWG)
• External ground terminal: 0.5 to 4 mm2 (20 to 12 AWG)
6.2.5 Cable specification
FOUNDATION Fieldbus
Use a twisted, shielded two-wire cable, preferably cable type A.
For further information on the cable specifications, see Operating Instructions
BA00013S "FOUNDATION Fieldbus Overview", FOUNDATION Fieldbus Guideline and IEC
61158-2 (MBP).
7 Operation options
7.1 Operation without an operating menu
Operation options Explanation Graphic Description
Local operation
without device display
The device is operated using the operating
keys and the DIP switches on the electronic
insert.
on
off
Display
Zero
simulation
TM
FOUNDATION
SW / P2=High
SW / Ö
damping
delta p only
A0029998
→  15
7.1.1 Position of operating elements
The operating key and DIP switches are located on the electronic insert in the device.

Deltabar M PMD55 FOUNDATION Fieldbus Operation options
Endress+Hauser 15
FOUNDATION Fieldbus
on
off
Display
Zero
simulation
TM
FOUNDATION
SW / P2=High
SW /
damping
delta p only
1
2
3
on
off
SW / P2=High Simulation
SW /
damping
123 4 5
87654
A0032660
1 Operating key for position zero adjustment (Zero) or reset
2 Green LED to indicate successful operation
3 Slot for optional local display
4 DIP switch used to determine the high-pressure side
5 DIP switch used to control the output characteristics and measuring mode
6 DIP-switch for simulation mode
7 DIP switch for switching damping on/off
8 DIP switch for locking/unlocking parameters relevant to the measured value
Function of the DIP switches
Symbol/labeling Switch position
"off" "on"
A0011978
The device is unlocked. Parameters relevant to
the measured value can be modified.
The device is locked. Parameters relevant to the
measured value cannot be modified.
damping τ Damping is switched off. The output signal
follows measured value changes without any
delay.
Damping is switched on. The output signal
follows measured value changes with the delay
time t. 1)
Simulation The simulation mode is switched off (factory
setting).
The simulation mode is switched on.
SW/√ The measuring mode and output characteristics
is defined by the setting in the operating menu.
• "Setup" → "Measuring mode"
• "Setup" → "Extended setup"
The measuring mode is "Flow" and the output
characteristic is "Square root" regardless of the
setting in the operating menu.
SW/P2= High The high-pressure (+/HP) side is defined by the
setting in the operating menu. ("Setup" → "High
Press. Side")
The high-pressure side (+/HP) is allocated to
the P2 pressure connection regardless of the
setting in the operating menu.
1) The value for the delay time can be configured via the operating menu ("Setup" → "Damping"). Factory setting: τ =
2 s or as per order specifications.

Operation options Deltabar M PMD55 FOUNDATION Fieldbus
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Function of the operating elements
Key Meaning
Zero pressed for at least 3
seconds
Position adjustment
Press key for at least 3 seconds. The LED on the electronic insert lights up briefly if
the pressure applied has been accepted for position adjustment. See also the
following Section "Performing position adjustment on site.''
Zero pressed for at least 12
seconds
Reset
All the parameters are reset to the order configuration.
Performing position adjustment on site
• Operation must be unlocked.
• The device is configured for the "Pressure" measuring mode (Cerabar, Deltabar) or "Level"
measuring mode (Deltapilot) as standard.
Operation via FF configuration program: In the Pressure Transducer Block, you can change
the measuring mode by means of the PRIMARY_VALUE_TYPE parameter.
• The pressure applied must be within the nominal pressure limits of the sensor. See
information on the nameplate.
• To reconcile the parameter database, perform a "Reconcile device" (after position
adjustment) with the FF host.
Perform position adjustment:
1. Pressure is present at the device.
2. Press key for at least 3 seconds.
3. If the LED on the electronic insert lights up briefly, the pressure applied has been
accepted for position adjustment. If the LED does not light up, the pressure applied was
not accepted. Observe the input limits. For error messages see the Operating
Instructions.

Deltabar M PMD55 FOUNDATION Fieldbus Operation options
Endress+Hauser 17
7.2 Operation with device display (optional)
1. 2. 3.
4. 5. 6.
A0028500
Functions:
• 8-digit measured value display including sign and decimal point.
• Bar graph as graphic display of the current pressure measured value in relation to the set
pressure range in the Pressure Transducer Block. The pressure range is set by means of the
SCALE_IN parameter (via FF configuration program, not via local display).
• Three keys for operation
• Simple and complete menu guidance due to breakdown of parameters into several levels
and groups
• Each parameter is given a 3-digit parameter code for easy navigation
• Possibility of configuring the display to suit individual requirements and preferences, e.g.
language, alternating display, display of other measured values such as sensor temperature,
contrast setting
• Comprehensive diagnostic functions (fault and warning message etc.)

Operation options Deltabar M PMD55 FOUNDATION Fieldbus
18 Endress+Hauser
E
+
–
F
1
6
2
57
3
4
A0030013
1 Main line
2 Value
3 Symbol
4 Unit
5 Bar graph
6 Information line
7 Operating keys
The following table illustrates the symbols that can appear on the local display. Four symbols
may appear at the same time.
Symbol Meaning
A0018154
Lock symbol
The operation of the device is locked. Unlock the device, .
A0018155
Communication symbol
Data transfer via communication
A0030015
Root symbol
Active measuring mode "Flow measurement"
The root flow signal is used for the current output.
A0013958
Error message "Out of specification"
The device is being operated outside its technical specifications (e.g. during startup or cleaning).
A0013959
Error message "Service mode"
The device is in the service mode (e.g. during a simulation).
A0013957
Error message "Maintenance required"
Maintenance is required. The measured value remains valid.

Deltabar M PMD55 FOUNDATION Fieldbus Operation options
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Symbol Meaning
A0013956
Error message "Failure detected"
An operating error has occurred. The measured value is no longer valid.
A0018156
Simulation symbol
Simulation mode is activated. DIP switch 2 for simulation is set to "On".
7.2.1 Operating keys on the display and operating module
Operating key(s) Meaning
A0017879
• Navigate down in the picklist
• Edit the numerical values or characters within a function
A0017880
• Navigate up in the picklist
• Edit the numerical values or characters within a function
A0017881
• Confirm entry
• Jump to the next item
• Select a menu item and activate the edit mode
A0017879
and
A0017881
Contrast setting of local display: darker
A0017880
and
A0017881
Contrast setting of local display: brighter
A0017879
and
A0017880
ESC functions:
• Exit edit mode for a parameter without saving the changed value
• You are in a menu at a selection level. Each time you press the keys simultaneously, you go
up a level in the menu.
7.2.2 Operating example: Parameters with a picklist
Example: selecting "Deutsch" as the language of the menu.
Language 000 Operation
1  English "English" is set as the menu language (default value).
A  in front of the menu text indicates the option that is currently active.
Deutsch
2 Deutsch Select "Deutsch" with  or .
 English
3  Deutsch • Select  to confirm. A  in front of the menu text indicates the active option ("Deutsch" is
now selected as the menu language).
• Use  to exit the edit mode for the parameter.
English

Operation options Deltabar M PMD55 FOUNDATION Fieldbus
20 Endress+Hauser
7.2.3 Operating example: User-definable parameters
Example: Setting the "Set URV (014)" parameter from 100 mbar (1.5 psi) to
50 mbar (0.75 psi).
Menu path: Setup → Extended setup → Current output → Set URV
Set URV 014 Operation
The local display shows the parameter to be changed. The "mbar" unit is
defined in another parameter and cannot be changed here.
11 0 0 . 0 0 0 mbar
Press  or  to enter the edit mode.
The first digit is highlighted in black.
210 0 . 0 0 0 mbar
Use the  key to change "1" to "5".
Press the  key to confirm "5". The cursor jumps to the next position
(highlighted in black).
Confirm "0" with  (second position).
350 0 . 0 0 0 mbar
The third digit is highlighted in black and can now be edited.
45 0 0. 0 0 0 mbar
Use the  key to change to the " " symbol.
Use  to save the new value and exit the edit mode. See next graphic.
55 0 ¿. 0 0 0 mbar
The new value for the upper range value is 50 mbar (0.75 psi).
Use  to exit the edit mode for the parameter.
Use  or  to return to the edit mode.
65 0 . 0 0 0 mbar
7.2.4 Operating example: Accepting the pressure present
Example: Setting position adjustment.
Menu path: Main menu → Setup → Position adjustment
Position adjustment 007 Operation
1  Cancel The pressure for position adjustment is present at the device.
Confirm
2 Cancel Use  or  to switch to the "Confirm" option. The active option is highlighted in
black.
 Confirm
3 Adjustment has
been accepted!
Use the  key to accept the applied pressure for position adjustment. The device
confirms the adjustment and goes back to the "Position adjustment" parameter.