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
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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
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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