Endress+Hauser Cerabar PMC71B Technische Daten
Products Solutions Services
Brief Operating Instructions
Cerabar PMC71B
Process pressure measurement
HART
These Instructions are Brief Operating Instructions; they 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 other documentation:
Available for all device versions via:
• Internet: www.endress.com/deviceviewer
• Smart phone/tablet: Endress+Hauser Operations App
KA01463P/00/EN/04.22-00
71582828
2022-08-31
Associated documentation Cerabar PMC71B HART
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.
2.2 Symbols
2.2.1 Safety symbols
DANGER
Cerabar PMC71B HART About this document
Endress+Hauser 3
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
Ground connection:
Terminal for connection to the grounding system.
2.2.3 Symbols for certain types of information
Permitted:
Procedures, processes or actions that are permitted.
Forbidden:
Procedures, processes or actions that are forbidden.
Additional information:
Reference to documentation:
Reference to page:
Series of steps:
1.
,
2.
,
3.
Result of an individual step:
2.2.4 Symbols in graphics
Item numbers: 1, 2, 3 ...
Series of steps:
1.
,
2.
,
3.
Views: A, B, C, ...
2.2.5 Symbols on the device
Safety instructions:
Observe the safety instructions contained in the associated Operating Instructions.
Basic safety instructions Cerabar PMC71B HART
4 Endress+Hauser
2.2.6 Communication symbols
2.3 Registered trademarks
HART®
Registered trademark of the FieldComm Group, Austin, Texas, USA
Bluetooth®
The Bluetooth® wordmark and logos are registered trademarks of Bluetooth SIG, Inc. and any
use of these trademarks by Endress+Hauser is licensed. Other trademarks and trade names
are those of their respective owners.
Apple®
Apple, the Apple logo, iPhone, and iPod touch are trademarks of Apple Inc., registered in the
U.S. and other countries. App Store is a service mark of Apple Inc.
Android®
Android, Google Play and the Google Play logo are trademarks of Google Inc.
KALREZ®
Registered trademark of DuPont Performance Elastomers L.L.C., Wilmington, USA
3 Basic safety instructions
3.1 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
3.2 Intended use
The Cerabar is a pressure transmitter for measuring level and pressure.
3.2.1 Incorrect use
The manufacturer is not liable for damage caused by improper or non-intended use.
Cerabar PMC71B HART Basic safety instructions
Endress+Hauser 5
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
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.
3.4 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.
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.
3.5 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.
Incoming acceptance and product identification Cerabar PMC71B HART
6 Endress+Hauser
3.6 Functional Safety SIL (optional)
The Functional Safety Manual must be strictly observed for devices that are used in functional
safety applications.
3.7 IT security
Endress+Hauser can only provide a warranty if the device is installed and used as described in
the Operating Instructions. The device is equipped with security mechanisms to protect it
against any inadvertent changes to the device settings. IT security measures in line with
operators' security standards and designed to provide additional protection for the device and
device data transfer must be implemented by the operators themselves.
3.8 Device-specific IT security
The device offers specific functions to support protective measures by the operator. These
functions can be configured by the user and guarantee greater in-operation safety if used
correctly. An overview of the most important functions is provided in the following section:
• Write protection via hardware write protection switch
• Access code to change the user role (applies for operation via display, Bluetooth, or
FieldCare, DeviceCare, Asset Management Tools ( e.g. AMS, PDM)
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.
Cerabar PMC71B HART Mounting
Endress+Hauser 7
4.2 Storage and transport
4.2.1 Storage conditions
• Use the original packaging
• Store the device in clean and dry conditions and protect from damage caused by shocks
Storage temperature range
See Technical Information.
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 device to the measuring point in the original packaging.
5 Mounting
5.1 Mounting requirements
5.1.1 General instructions
• Do not clean or touch the membrane with hard and/or pointed objects.
• Do not remove the protection on the membrane until just 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 devices 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 if there is a risk of medium buildup or clogging at the process
connection
• The flushing ring is clamped between the process connection and process
• Material buildup in front of the 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
Mounting Cerabar PMC71B HART
8 Endress+Hauser
• 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 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 devices with PVDF thread
LWARNING
Risk of damage to process connection!
Risk of injury!
‣Devices with a PVDF thread must be installed with the mounting bracket provided!
‣PVDF is only intended for metal-free applications!
LWARNING
Material fatigue from pressure and temperature!
Risk of injury if parts burst! The thread can become loose if exposed to high pressure and
temperature loads.
‣Check the leak-tight integrity of the thread regularly.
‣Use Teflon tape to seal the ½" NPT thread.
5.1.4 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 measuring cell via the pressure
compensation element (1).
‣Mount the device as follows.
Cerabar PMC71B HART Mounting
Endress+Hauser 9
1
1
11
A0038723
• 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
• 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
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
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
5.2.3 Pressure measurement in liquids
Mount the device with the shutoff device below or at the same level as the tapping point.
Electrical connection Cerabar PMC71B HART
10 Endress+Hauser
5.2.4 Level measurement
• 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 Closing the housing cover
NOTICE
Thread and housing cover damaged from dirt and fouling!
‣Remove fouling (e.g. sand.) on the thread of the cover and housing.
‣If you continue to encounter resistance when closing the cover, check the thread again for
fouling.
Housing thread
The thread of the electronics and connection compartment is coated with lubricant
varnish.
Avoid additional lubrication.
6 Electrical connection
6.1 Connecting requirements
6.1.1 Potential equalization
The protective ground on the device must not be connected. If necessary, the potential
matching line can be connected to the outer ground terminal of the device before the device is
connected.
1
A0045412
1 Ground terminal for connecting the potential matching line
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