Endress+Hauser Cerabar PMP51B User manual

Products Solutions Services
Operating Instructions
Cerabar PMP51B
Process pressure measurement
Analog
4-20 mA Analog
BA02051P/00/EN/03.21
71547520
2021-11-30
Valid as of version
01.00.zz (Device firmware)

Cerabar PMP51B Analog
2 Endress+Hauser
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
• 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. The
Endress+Hauser sales organization will supply you with current information and updates
to these instructions.

Cerabar PMP51B Analog Table of contents
Endress+Hauser 3
Table of contents
1 About this document ............... 4
1.1 Document function ..................... 4
1.2 Symbols ............................. 4
1.3 List of abbreviations ..................... 6
1.4 Turn down calculation ................... 6
1.5 Documentation ........................ 7
1.6 Registered trademarks ................... 7
2 Basic safety instructions ............ 8
2.1 Requirements for the personnel ............ 8
2.2 Intended use .......................... 8
2.3 Workplace safety ....................... 8
2.4 Operational safety ...................... 8
2.5 Product safety ......................... 9
3 Product description ............... 10
3.1 Product design ....................... 10
4 Incoming acceptance and product
identification ..................... 13
4.1 Incoming acceptance ................... 13
4.2 Product identification ................... 13
4.3 Storage and transport .................. 14
5 Mounting ......................... 15
5.1 Mounting requirements ................. 15
5.2 Mounting the device ................... 17
5.3 Post-mounting check ................... 24
6 Electrical connection .............. 25
6.1 Connecting requirements ............... 25
6.2 Connecting the device .................. 25
6.3 Ensuring the degree of protection ......... 29
6.4 Post-connection check .................. 29
7 Operation options ................. 30
7.1 Operating keys and DIP switches on the
electronic insert ....................... 30
7.2 local display ......................... 30
8 Commissioning ................... 31
8.1 Preliminaries ........................ 31
8.2 Function check ....................... 31
8.3 Device configuration ................... 31
8.4 Protecting settings from unauthorized
access .............................. 33
9 Diagnostics and troubleshooting ... 35
9.1 General troubleshooting ................. 35
9.2 Diagnostic information on local display ...... 37
9.3 Diagnostic list ........................ 37
9.4 Event logbook ........................ 40
9.5 Resetting the device .................... 42
9.6 Firmware history ...................... 42
10 Maintenance ...................... 43
10.1 Maintenance tasks ..................... 43
11 Repair ............................ 44
11.1 General notes ........................ 44
11.2 Spare parts .......................... 44
11.3 Return .............................. 45
11.4 Disposal ............................ 45
12 Accessories ....................... 46
12.1 Device-specific accessories ............... 46
12.2 Device Viewer ........................ 46
13 Technical data .................... 47
13.1 Output ............................. 47
13.2 Environment ......................... 48
13.3 Process ............................. 51
Index .................................. 58

About this document Cerabar PMP51B Analog
4 Endress+Hauser
1 About this document
1.1 Document 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.
1.2 Symbols
1.2.1 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.
1.2.2 Electrical symbols
Ground connection:
Terminal for connection to the grounding system.
1.2.3 Symbols for certain types of information
Permitted:
Procedures, processes or actions that are permitted.
Forbidden:
Procedures, processes or actions that are forbidden.

Cerabar PMP51B Analog About this document
Endress+Hauser 5
Additional information:
Reference to documentation:
Reference to page:
Series of steps:
1.
,
2.
,
3.
Result of an individual step:
1.2.4 Symbols in graphics
Item numbers: 1, 2, 3 ...
Series of steps:
1.
,
2.
,
3.
Views: A, B, C, ...
1.2.5 Symbols on the device
Safety instructions:
Observe the safety instructions contained in the associated Operating Instructions.

About this document Cerabar PMP51B Analog
6 Endress+Hauser
1.3 List of abbreviations
URL OPLMWP
LRL
0
p
LRV URV
1
2
3
4
A0029505
1 OPL: The OPL (overpressure limit = sensor overload limit) for the 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. Pay attention to the pressure/temperature dependency.
2 MWP: The 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. Pay attention to the pressure/temperature dependency. The MWP may be
applied at the device for an unlimited period of time. The MWP can be found on the nameplate.
3 The maximum sensor measuring range corresponds to the span between the LRL and URL. This sensor
measuring range is equivalent to the maximum calibratable/adjustable span.
4 The calibrated/adjusted span corresponds to the span between the LRV and URV. Factory setting: 0 to URL.
Other calibrated spans can be ordered as customized spans.
p Pressure
LRL Lower range limit
URL Upper range limit
LRV Lower range value
URV Upper range value
TD Turn down. Example - see the following section.
1.4 Turn down calculation
LRV URLURV LRL
1 = 2 3
A0029545
1 Calibrated/adjusted span
2 Zero point-based span
3 Upper range limit
Example:
• Sensor: 10 bar (150 psi)
• Upper range limit (URL) = 10 bar (150 psi)
• Calibrated/adjusted span: 0 to 5 bar (0 to 75 psi)
• Lower range value (LRV) = 0 bar (0 psi)
• Upper range value (URV) = 5 bar (75 psi)
TD =URL
|URV - LRV|

Cerabar PMP51B Analog About this document
Endress+Hauser 7
In this example, the TD is 2:1. This span is based on the zero point.
1.5 Documentation
All available documents can be downloaded using:
• the serial number of the device (see cover page for description) or
• the data matrix code of the device (see cover page for description) or
• the "Downloads" area of the website www.endress.com
1.5.1 Supplementary device-dependent documentation
Additional documents are supplied depending on the device version ordered: Always
comply strictly with the instructions in the supplementary documentation. The
supplementary documentation is an integral part of the device documentation.
1.6 Registered trademarks

Basic safety instructions Cerabar PMP51B Analog
8 Endress+Hauser
2 Basic safety instructions
2.1 Requirements for the personnel
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)
‣Follow instructions and comply with 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
2.2 Intended use
The Cerabar is a pressure transmitter for measuring level and pressure.
2.2.1 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.
2.3 Workplace safety
When working on and with the device:
‣Wear the required personal protective equipment according to federal/national
regulations.
‣Switch off the supply voltage before connecting the device.
2.4 Operational safety
Risk of injury!
‣Operate the device only if it is in proper technical condition, free from errors and faults.
‣The operator is responsible for the interference-free operation of the device.
Modifications to the device
Unauthorized modifications to the device are not permitted and can lead to unforeseeable
dangers:
‣If, despite this, modifications are required, consult with Endress+Hauser.
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 the repair of an electrical device.
‣Use original spare parts and accessories from Endress+Hauser only.

Cerabar PMP51B Analog Basic safety instructions
Endress+Hauser 9
Hazardous area
To eliminate the risk of danger to persons or the facility when the device is used in the
approval-related area (e.g. explosion protection, pressure equipment safety):
‣Check the nameplate to verify if the device ordered can be put to its intended use in the
approval-related area.
‣Observe the specifications in the separate supplementary documentation that is an
integral part of these Instructions.
2.5 Product safety
This device is designed in accordance with good engineering practice to meet state-of-the-
art safety requirements, has been tested, and left the factory in a condition in which it is
safe to operate.
It meets general safety standards and legal requirements. It also complies with the EC
directives listed in the device-specific EC Declaration of Conformity. Endress+Hauser
confirms this by affixing the CE mark to the device.

Product description Cerabar PMP51B Analog
10 Endress+Hauser
3 Product description
3.1 Product design
3.1.1 Metal process membrane
Standard device (without diaphragm seal)
1
2
3
p
A0043089
1 Measuring element
2 Channel with fill fluid
3 Metal process membrane
p Pressure
The pressure deflects the metal process membrane of the sensor. A fill fluid transfers the
pressure to a Wheatstone bridge (semi-conductor technology). The pressure-dependent
change in the bridge output voltage is measured and evaluated.
Advantages:
• Can be used for high process pressures
• High long-term stability
• High overload resistance
• Secondary containment for enhanced integrity
• Significantly reduced thermal effect e.g. compared to diaphragm seal systems with
capillaries

Cerabar PMP51B Analog Product description
Endress+Hauser 11
Device with diaphragm seal
p
1
2
3
4
A0043583
1 Measuring element
2 Internal process membrane
3 Channel with fill fluid
4 Metal process membrane
p Pressure
The pressure acts on the process membrane of the diaphragm seal and is transferred from
a diaphragm seal fill fluid to the internal process membrane. The internal process
membrane is deflected. A fill fluid transfers the pressure to the measuring element on
which a resistance bridge is located. The pressure-dependent change in the bridge output
voltage is measured and evaluated.
Advantages:
• Depending on the version, can be used for process pressures up to 400 bar (6 000 psi)
and for extreme process temperatures
• High long-term stability
• High overload resistance
• Standard device (without diaphragm seal): secondary containment for enhanced
integrity
Applications for diaphragm seals
Diaphragm seal systems are used if the process and the device need to be separated.
Diaphragm seal systems offer clear advantages in the following instances:
• In the case of extreme process temperatures - through the use of temperature isolators
or capillaries
• In the case of strong vibrations - decouple the process from the device by using a
capillary
• In the case of aggressive or corrosive media - through the use of high-durability
membrane materials
• In the case of media that crystallize or contain solids - through the choice of suitable
coatings
• In the case of heterogeneous and fibrous process media
• If extreme measuring point cleaning is necessary, or in the event of very damp mounting
locations
• For mounting locations that are difficult to access

Product description Cerabar PMP51B Analog
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3.1.2 Level measurement (level, volume and mass)
Standard device (without diaphragm seal)
h = p
ρ g
h
A0038343
h Height (level)
p Pressure
ρ Density of the medium
g Gravitational constant
Device with diaphragm seal
h = p
ρ g
h
A0038342
 1 Sample illustration: diaphragm seal with capillary
h Height (level)
p Pressure
ρ Density of the medium
g Gravitational constant
Advantages:
• Volume and mass measurements in any vessel shape with a freely programmable
characteristic curve
• Has a wide range of uses, e.g.
• For foam formation
• In vessels with agitators or screen fittings
• For liquid gases

Cerabar PMP51B Analog Incoming acceptance and product identification
Endress+Hauser 13
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) provided?
If you can answer "no" to any of these questions, please contact Endress+Hauser.
4.1.1 Scope of delivery
The scope of delivery comprises:
• Device
• Optional accessories
Accompanying documentation:
• Brief Operating Instructions
• Final inspection report
• Additional Safety Instructions for devices with approvals (e.g. ATEX, IECEx, NEPSI, etc.)
• Optional: factory calibration form, test certificates
The Operating Instructions are available on the Internet at:
www.endress.com → Download
4.2 Product identification
The following options are available for the identification of the measuring device:
• Nameplate specifications
• Order code with breakdown of the device features on the delivery note
• Enter the serial numbers from the nameplates in Device Viewer
(www.endress.com/deviceviewer): all the information about the measuring device is
displayed.
4.2.1 Manufacturer address
Endress+Hauser SE+Co. KG
Hauptstraße 1
79689 Maulburg, Germany
Place of manufacture: See nameplate.

Incoming acceptance and product identification Cerabar PMP51B Analog
14 Endress+Hauser
4.2.2 Nameplate
Different nameplates are used depending on the device version.
The nameplates contain the following information:
• Manufacturer name and device name
• Address of the certificate holder and country of manufacture
• Order code and serial number
• Technical data
• Approval-specific information
Compare the data on the nameplate with your order.
4.3 Storage and transport
4.3.1 Storage conditions
• Use the original packaging
• Store the measuring device in clean and dry conditions and protect from damage caused
by shocks
Storage temperature range
See Technical Information.
4.3.2 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 the original packaging.
LWARNING
Incorrect transport!
Capillaries may become damaged, and there is a risk of injury!
‣Do not use capillaries as a carrying aid for the diaphragm seals.

Cerabar PMP51B Analog Mounting
Endress+Hauser 15
5 Mounting
5.1 Mounting requirements
5.1.1 General instructions
• Do not clean or touch process membrane with hard and/or pointed objects
• Do not remove process membrane protection until shortly before installation
Always firmly tighten the housing cover and the cable entries.
1. Counter-tighten the cable entries.
2. Tighten the coupling nut.
5.1.2 Installation instructions
• The standard devices (without diaphragm seals) are mounted according to the same
guidelines as pressure gauges (DIN EN837-2)
• To ensure optimal readability of the local display, adjust the housing and local display
• Endress+Hauser offers a mounting bracket to mount the device on pipes or walls
• Use flushing rings for flanges, flange seals and pancake seals if buildup or clogging can
be expected at the process membrane
• The flushing ring is clamped between the process connection and the flange, flange
seal or pancake seal
• Material buildup in front of the process membrane is flushed away and the pressure
chamber is vented via the two lateral flushing holes
• When measuring in media containing solids (e.g. dirty liquids), installing separators and
drain valves is useful for capturing and removing sediment
• Using a valve manifold allows for easy commissioning, installation and maintenance
without interrupting the process
• When mounting the device, establishing the electrical connection and during operation:
prevent the penetration of moisture into the housing
• Point the cable and plug downwards as much as possible to prevent moisture from
entering (e.g. rainwater or condensation)
5.1.3 Installation instructions for thread
• Device with G 1 ½" thread:
Place the flat seal on the sealing surface of the process connection
Avoid additional strain on the process membrane: do not seal the thread with hemp or
similar materials
• Device with NPT thread:
• Wrap Teflon tape around the thread to seal it
• Tighten the device at the hexagon bolt only; do not turn it by the housing
• When screwing in, do not overtighten the thread; tighten the NPT thread to the
required depth according to the standard
• For the following process connections, a tightening torque of max. 40 Nm (29.50 lbf ft)
is specified:
• Thread ISO228 G ½" with flush membrane
• Thread DIN13 M20 x 1.5 with flush membrane
• NPT 3/4" with flush membrane

Mounting Cerabar PMP51B Analog
16 Endress+Hauser
5.1.4 Installation instructions for devices with diaphragm seals
NOTICE
Incorrect handling!
Damage to the device!
‣The diaphragm seal and pressure transmitter form a closed, calibrated system which
has been filled with diaphragm seal fill fluid. Never open any of the holes for fill fluid.
‣Ensure strain relief to prevent the capillary from bending (bending radius ≥
100 mm (3.94 in).
‣Do not use capillaries as a carrying aid for the diaphragm seals.
‣Observe the application limits of the diaphragm seal fill fluid.
General information
In the case of devices with diaphragm seals and capillaries, the zero point shift caused by
the hydrostatic pressure of the filling fluid column in the capillaries must be taken into
account when selecting the measuring cell. If a measuring cell with a small measuring
range is selected, a position adjustment can cause the sensor to go over range (position
adjustment due to zero point offset, caused by the orientation of the liquid column of the
fill fluid). Perform zero point adjustment if necessary.
For devices with a capillary, use a suitable bracket (mounting bracket) for mounting.
When mounting, sufficient strain relief must be provided for the capillary to prevent the
capillary from bending (capillary bending radius ≥ 100 mm (3.94 in)).
Mount the capillary so that it is vibration-free (in order to avoid additional pressure
fluctuations).
Do not mount capillaries in the vicinity of heating or cooling lines and protect them
against direct sunlight.
More detailed installation instructions are provided in the Applicator
"Sizing Diaphragm Seal".
5.1.5 Orientation
NOTICE
Damage to the device!
If a heated device is cooled during a cleaning process (e.g. by cold water), a vacuum
develops for a short time. As a result of this, moisture can enter the sensor via the pressure
compensation element (1).
‣Mount the device as follows.
1
1
11
A0038723

Cerabar PMP51B Analog Mounting
Endress+Hauser 17
• Keep the pressure compensation element (1) free from contamination
• A position-dependent zero point shift (when the vessel is empty the measured value
does not display zero) can be corrected
• Diaphragm seals also shift the zero point, depending on the installation position
• The use of shutoff devices and/or water pocket pipes is recommended for mounting
• The orientation depends on the measuring application
5.2 Mounting the device
5.2.1 Pressure measurement in gases
1
2
A0038730
1 Device
2 Shutoff device
Mount the device with the shutoff device above the tapping point so that any condensate
can flow into the process.
5.2.2 Pressure measurement in vapors
1
2
3
4
1
2
A0038731
1 Device
2 Shutoff device
3 U-shaped water pocket pipe
4 O-shaped water pocket pipe
A water pocket pipe reduces the temperature to almost the ambient temperature. The
defined water column only causes minimal (negligible) measured errors and minimal
(negligible) thermal effects on the device.
Observe the maximum permitted ambient temperature of the transmitter!
• Ideally, mount the device with the O-shaped water pocket pipe below the tapping point
The device may also be mounted above the tapping point
• Fill the water pocket pipe with liquid before commissioning

Mounting Cerabar PMP51B Analog
18 Endress+Hauser
5.2.3 Pressure measurement in liquids
3
1
2
A0038732
1 Device
2 Shutoff device
3 Water pocket pipe
Mount the device with the shutoff device below or at the same level as the tapping point.
5.2.4 Level measurement
A0038733
• Always mount the device below the lowest measuring point
• Do not install the device at the following positions:
• In the filling curtain
• In the tank outlet
• In the suction area of a pump
• At a point in the tank which could be affected by pressure pulses from the agitator
• Mount the device downstream from a shutoff device: the calibration and function check
can be carried out more easily
5.2.5 Thermal insulation with diaphragm seal directly mounted
The device may only be insulated up to a certain height. The maximum permitted
insulation height is indicated on the device 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 data were determined under the most critical application "quiescent air".
Maximum permitted insulation height, indicated here on a device with a flange:

Cerabar PMP51B Analog Mounting
Endress+Hauser 19
A
B
1 2
A0020474
A Ambient temperature
B Process temperature
1 Maximum permitted insulation height
2 Insulation material
5.2.6 Mounting with a "Compact" diaphragm seal type
Tp
Ta
−100−148
−50−58
032
50122
100212
150302
200392
[°C]
[°F]
[°C][°F]
−60
−76
−40
−40
−20
−4
0
32
20
68
40
104
60
140
80
176
100
212
TT
pp
T T
a a
A0040383
TaAmbient temperature at transmitter
TpMaximum process temperature
TaTp
+85 °C (+185 °F) –70 to +120 °C (–94 to +248 °F)
+60 °C (+140 °F) –70 to +160 °C (–94 to +320 °F)
–20 °C (–4 °F) –70 to +160 °C (–94 to +320 °F)
–50 °C (–58 °F) 0 to +160 °C (+32 to +320 °F)
5.2.7 Thermal insulation when mounting with a "Temperature
isolator" diaphragm seal type
Use of temperature isolators in the event of constant extreme medium temperatures which
cause the maximum permissible electronics temperature of +85 °C (+185 °F) to be
exceeded. Diaphragm seal systems with temperature isolators can be used up to a

Mounting Cerabar PMP51B Analog
20 Endress+Hauser
maximum temperature of +400 °C (+752 °F) depending on the fill fluid used. For details
see the Technical Information. To minimize the influence of rising heat, mount the device
horizontally or with the housing pointing downwards. The additional installation height
brings about a zero point shift due to the hydrostatic column in the temperature isolator.
This zero point shift can be corrected on the device.
The maximum ambient temperature Ta at the transmitter depends on the maximum
process temperature Tp.
The maximum process temperature depends on the diaphragm seal fill fluid used.
TT
pp
TT
aa
A B C
2
2
111
TpTa
Tp
Ta
+176+140+104+68+32-4
+400
+350
+300
+250
+200
+150
+100
+50
0
-50
-100
+752
+662
+572
+482
+392
+302
+212
+122
+32
-58
-148 [°C]
[°F]
[°C][°F]
+80+60+40+20
0
-20
-40
-40
A
A
C
C
B
B
-76
- 06
A0039378
A No insulation
B Insulation 30 mm (1.18 in)
C Maximum insulation
1 Transmitter
2 Insulation material
Item Ta 1) Tp 2)
A60 °C (140 °F) 400 °C (752 °F) 3)
85 °C (185 °F) 200 °C (392 °F)
–50 °C (–58 °F) 60 °C (140 °F)
–35 °C (–31 °F) –70 °C (–94 °F)
B80 °C (176 °F) 400 °C (752 °F) 3)
85 °C (185 °F) 300 °C (572 °F)
–50 °C (–58 °F) 130 °C (266 °F)
–35 °C (–31 °F) –70 °C (–94 °F)