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

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:

Result of an individual step:

2.2.4 Symbols in graphics

Item numbers: 1, 2, 3 ...

Series of steps:

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

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.

A0045412

1 Ground terminal for connecting the potential matching line

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