Endress+Hauser Cerabar S PMC71 Specifiche tecniche
Products Solutions Services
Brief Operating Instructions
Cerabar S PMC71, PMP71,
PMP75
Process pressure measurement
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
KA01025P/00/EN/19.22-00
71565953
2022-04-05
Associated documentation Cerabar S PMC71, PMP71, PMP75
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.
Cerabar S PMC71, PMP71, PMP75 About this document
Endress+Hauser 3
2.2 Symbols
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 Cerabar S PMC71, PMP71, PMP75
4 Endress+Hauser
1, 2, 3, ...
Item numbers
1.
,
2.
,
3.
Series of steps
Result of a step
2.3 Registered trademarks
•KALREZ®
Trademark of E.I. Du Pont de Nemours & Co., Wilmington, USA
•TRI-CLAMP®
Trademark of Ladish & Co., Inc., Kenosha, USA
•FOUNDATIONTM Fieldbus
Registered trademark of the FieldComm Group, Austin, USA
•GORE-TEX®
Trademark of W.L. Gore & Associates, Inc., 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
‣Before starting work, read and understand the instructions in the manual and
supplementary documentation as well as the certificates (depending on the application)
‣Follow instructions and comply with basic conditions
3.2 Intended use
The Cerabar S is a pressure transmitter for measuring level and pressure.
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.
Cerabar S PMC71, PMP71, PMP75 Basic safety instructions
Endress+Hauser 5
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 danger to persons or the installation when the device is used in the hazardous
area (e.g. explosion protection, pressure vessel safety):
‣Check the nameplate to verify whether the ordered device can be used for the intended
purpose in the hazardous area.
‣Observe the specifications in the separate supplementary documentation, which is an
integral part of this manual.
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 it
is safe to operate.
It meets the 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.
3.6 Functional safety SIL3 (optional)
The Functional Safety Manual must be strictly observed for devices that are used in functional
safety applications.
Incoming acceptance and product identification Cerabar S PMC71, PMP71, PMP75
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) provided?
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).
Cerabar S PMC71, PMP71, PMP75 Mounting
Endress+Hauser 7
5 Mounting
5.1 Mounting requirements
5.1.1 General installation instructions
• Devices with a G 1 1/2 thread:
When screwing the device into the tank, the flat seal has to be positioned on the sealing
surface of the process connection. To avoid additional strain on the process membrane, the
thread should never be sealed with hemp or similar materials.
• Devices with NPT threads:
• Wrap Teflon tape around the thread to seal it.
• Tighten the device at the hexagonal bolt only. Do not turn at the housing.
• Do not overtighten the thread when screwing. Max. tightening torque:
20 to 30 Nm (14.75 to 22.13 lbf ft)
• For the following process connections, a tightening torque of max. 40 Nm (29.50 lbf ft) is
specified:
• Thread ISO228 G1/2 (order option "1A" or "1B")
• Thread DIN13 M20 x 1.5 (order option "1N" or "1P")
5.1.2 Mounting sensor modules with PVDF thread
LWARNING
Risk of damage to process connection!
Risk of injury!
‣Sensor modules with PVDF thread must be installed with the mounting bracket provided!
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.
‣The integrity of the thread must be checked regularly and the thread may need to be
retightened with the maximum tightening torque of 7 Nm (5.16 lbf ft). Teflon tape is
recommended for sealing the ½" NPT thread.
5.2 Installation instructions for devices without diaphragm seals -
PMP71, PMC71
NOTICE
Damage to the device!
If a heated Cerabar S is cooled during the cleaning process (e.g. by cold water), a vacuum
develops for a short time, and as a result, moisture can enter the sensor through the pressure
compensation (1).
‣Mount the device as follows.
Mounting Cerabar S PMC71, PMP71, PMP75
8 Endress+Hauser
1
1
1
1
A0031804
• Keep the pressure compensation and GORE-TEX® filter (1) free from contamination and
water.
• Cerabar S devices without diaphragm seals are mounted in accordance with the same
guidelines as a manometer (DIN EN 837‑2). We recommend the use of shutoff devices and
water pocket pipes. The orientation depends on the measuring application.
• Do not clean or touch process membranes with hard or pointed objects.
• The device must be installed as follows in order to comply with the cleanability
requirements of the ASME-BPE (Part SD Cleanability):
A0031805
Cerabar S PMC71, PMP71, PMP75 Mounting
Endress+Hauser 9
5.2.1 Pressure measurement in gases
Mount the Cerabar S with shutoff device above the tapping point so that any condensate can
flow into the process.
5.2.2 Pressure measurement in vapors
For pressure measurement in vapors, use water pocket pipes. The water pocket pipe reduces
the temperature to almost ambient temperature. Preferably mount the device with the water
pocket pipe below the tapping point.
Advantages:
• defined water column only causes minimal/negligible measured errors
• only minor/negligible heat effects on the device.
Mounting above the tapping point is also permitted. Observe the max. permitted ambient
temperature of the transmitter.
5.2.3 Pressure measurement in liquids
Mount the Cerabar S with the shutoff device below or at the same level as the tapping point.
5.2.4 Level measurement
• Always install the Cerabar S below the lowest measuring point.
• Do not mount the device in the filling curtain or at a point in the tank which could be
affected by pressure pulses from an agitator.
• Do not mount the device in the suction area of a pump.
• The adjustment and functional test can be carried out more easily if you mount the device
downstream from a shutoff device.
5.3 Installation instructions for devices with diaphragm seals –
PMP75
• Cerabar S devices with diaphragm seals are screwed in, flanged or clamped on, depending
on the type of diaphragm seal.
• Please note that the hydrostatic pressure of the liquid columns in the capillaries can cause
zero point shift. The zero point shift can be corrected.
• Do not clean or touch the process membrane of the diaphragm seal with hard or pointed
objects.
• Do not remove the protection on the process membrane until just before installation.
NOTICE
Incorrect handling!
Damage to the device!
‣A diaphragm seal and the pressure transmitter together form a closed, oil-filled calibrated
system. The fill fluid hole is sealed and may not be opened.
‣If a mounting bracket is used, sufficient strain relief must be ensured for the capillaries in
order to prevent them from buckling (bending radius >= 100 mm (3.94 in)))
‣Please observe the application limits of the diaphragm seal fill fluid as specified in the
Technical Information for Cerabar S TI00383P, "Planning instructions for diaphragm seal
systems" section.
Electrical connection Cerabar S PMC71, PMP71, PMP75
10 Endress+Hauser
NOTICE
In order to obtain more precise measurement results and to avoid a defect in the device,
mount the capillaries as follows:
‣Mount capillaries vibration-free (in order to avoid additional pressure fluctuations)
‣Do not mount in the vicinity of heating or cooling lines
‣Insulate the capillaries if the ambient temperature is below or above the reference
temperature
‣Mount with a bending radius >= 100 mm (3.94 in)
‣Do not use the capillaries as a carrying aid for the diaphragm seals!
6 Electrical connection
6.1 Connecting requirements
LWARNING
Risk of electric shock!
If the operating voltage is > 35 VDC: Dangerous contact voltage at terminals.
‣In a wet environment, do not open the cover if voltage is present.
LWARNING
An incorrect connection compromises electrical safety!
‣Risk of electric shock and/or explosion! 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.
‣Devices with integrated overvoltage protection must be grounded.
‣Protective circuits against reverse polarity, HF influences and overvoltage peaks are
integrated.
‣The supply voltage must match the power supply on the nameplate, see Operating
Instructions → 2.
‣Switch off the supply voltage before connecting.
‣Remove the housing cover of the terminal compartment.
‣Guide the cable through the gland. Preferably use a twisted, shielded two-wire cable.
‣Connect the device as indicated in the diagram.
‣Screw down the housing cover.
‣Switch on the supply voltage.
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