ICS Schneider Messtechnik CPT-2 Series Manual de usuario
Operating Instructions
Process pressure transmitter CPT-2x
Process pressure transmitter CPT-2x
4 … 20 mA
Ceramic measuring cell
2
Contents
WIKA Operating Instructions - Process pressure transmitter CPT-2x
Contents
1 About this document ............................................................................................................... 4
1.1 Function ........................................................................................................................... 4
1.2 Target group ..................................................................................................................... 4
1.3 Symbols used................................................................................................................... 4
2 For your safety ......................................................................................................................... 5
2.1 Authorised personnel ....................................................................................................... 5
2.2 Appropriate use................................................................................................................ 5
2.3 Warning about incorrect use............................................................................................. 5
2.4 General safety instructions............................................................................................... 5
2.5 EU conformity................................................................................................................... 5
2.6 NAMUR recommendations .............................................................................................. 6
2.7 Installation and operation in the USA and Canada ........................................................... 6
3 Product description ................................................................................................................. 7
3.1 Conguration.................................................................................................................... 7
3.2 Principle of operation........................................................................................................ 8
3.3 Supplementary cleaning procedures.............................................................................. 12
3.4 Packaging, transport and storage................................................................................... 13
4 Mounting................................................................................................................................. 14
4.1 General instructions ....................................................................................................... 14
4.2 Instructions for oxygen applications ............................................................................... 16
4.3 Ventilation and pressure compensation.......................................................................... 16
4.4 Process pressure measurement..................................................................................... 18
4.5 Level measurement........................................................................................................ 20
4.6 External housing ............................................................................................................ 21
5 Connecting to power supply................................................................................................. 22
5.1 Preparing the connection ............................................................................................... 22
5.2 Connecting..................................................................................................................... 23
5.3 Single chamber housing................................................................................................. 24
5.4 Housing IP66/IP68 (1 bar) .............................................................................................. 25
5.5 External housing with version IP68 (25 bar) ................................................................... 26
5.6 Switch-on phase............................................................................................................. 27
6 Set up with the display and adjustment module ................................................................ 29
6.1 Insert display and adjustment module............................................................................ 29
6.2 Adjustment system......................................................................................................... 29
6.3 Measured value indication.............................................................................................. 30
6.4 Parameter adjustment - Quick setup .............................................................................. 31
6.5 Parameter adjustment - Extended adjustment................................................................ 31
6.6 Saving the parameterisation data................................................................................... 44
7 Diagnostics and servicing .................................................................................................... 45
7.1 Maintenance .................................................................................................................. 45
7.2 Cleaning - hygienic connection with compression nut .................................................... 45
7.3 Diagnosis function.......................................................................................................... 46
7.4 Rectify faults................................................................................................................... 48
7.5 Exchange process module on version IP68 (25 bar) ...................................................... 48
7.6 Instrument repair ............................................................................................................ 49
3
Contents
WIKA Operating Instructions - Process pressure transmitter CPT-2x
8 Dismount................................................................................................................................. 51
8.1 Dismounting steps.......................................................................................................... 51
8.2 Disposal ......................................................................................................................... 51
9 Supplement ............................................................................................................................ 52
9.1 Technical data ................................................................................................................ 52
9.2 Calculation of the total deviation..................................................................................... 64
9.3 Calculation of the total deviation - Practical example...................................................... 64
9.4 Dimensions .................................................................................................................... 67
9.5 Trademark ...................................................................................................................... 75
Safety instructions for Ex areas
TakenoteoftheExspecicsafetyinstructionsforExapplications.
These instructions are attached as documents to each instrument
with Ex approval and are part of the operating instructions.
Editing status: 2020-05-12
4
1 About this document
WIKA Operating Instructions - Process pressure transmitter CPT-2x
1 About this document
1.1 Function
This instruction provides all the information you need for mounting,
connection and setup as well as important instructions for mainte-
nance,faultrectication,theexchangeofpartsandthesafetyofthe
user. Please read this information before putting the instrument into
operation and keep this manual accessible in the immediate vicinity
of the device.
1.2 Target group
This operating instructions manual is directed to trained personnel.
Thecontentsofthismanualmustbemadeavailabletothequalied
personnel and implemented.
1.3 Symbols used
Information, note, tip: This symbol indicates helpful additional infor-
mation and tips for successful work.
Note: This symbol indicates notes to prevent failures, malfunctions,
damage to devices or plants.
Caution: Non-observance of the information marked with this symbol
may result in personal injury.
Warning: Non-observance of the information marked with this symbol
may result in serious or fatal personal injury.
Danger: Non-observance of the information marked with this symbol
results in serious or fatal personal injury.
Ex applications
This symbol indicates special instructions for Ex applications.
• List
The dot set in front indicates a list with no implied sequence.
1 Sequence of actions
Numbers set in front indicate successive steps in a procedure.
Battery disposal
This symbol indicates special information about the disposal of bat-
teries and accumulators.
5
2 For your safety
WIKA Operating Instructions - Process pressure transmitter CPT-2x
2 For your safety
2.1 Authorised personnel
All operations described in this documentation must be carried out
onlybytrained,qualiedpersonnelauthorisedbytheplantoperator.
During work on and with the device, the required personal protective
equipment must always be worn.
2.2 Appropriate use
The CPT-2x is a pressure transmitter for process pressure and hydro-
static level measurement.
Youcannddetailedinformationabouttheareaofapplicationin
chapter "Product description".
Operational reliability is ensured only if the instrument is properly
usedaccordingtothespecicationsintheoperatinginstructions
manual as well as possible supplementary instructions.
2.3 Warning about incorrect use
Inappropriate or incorrect use of this product can give rise to applica-
tion-specichazards,e.g.vesseloverllthroughincorrectmounting
or adjustment. Damage to property and persons or environmental
contamination can result. Also, the protective characteristics of the
instrument can be impaired.
2.4 General safety instructions
This is a state-of-the-art instrument complying with all prevailing
regulations and directives.The instrument must only be operated in a
technicallyawlessandreliablecondition.Theoperatorisresponsi-
ble for the trouble-free operation of the instrument. When measuring
aggressive or corrosive media that can cause a dangerous situation
if the instrument malfunctions, the operator has to implement suitable
measures to make sure the instrument is functioning properly.
The safety instructions in this operating instructions manual, the na-
tional installation standards as well as the valid safety regulations and
accident prevention rules must be observed by the user.
For safety and warranty reasons, any invasive work on the device
beyond that described in the operating instructions manual may be
carried out only by personnel authorised by the manufacturer. Arbi-
traryconversionsormodicationsareexplicitlyforbidden.Forsafety
reasons,onlytheaccessoryspeciedbythemanufacturermustbe
used.
To avoid any danger, the safety approval markings and safety tips on
the device must also be observed.
2.5 EU conformity
ThedevicefullsthelegalrequirementsoftheapplicableEUdirec-
tives.ByaxingtheCEmarking,weconrmtheconformityofthe
instrument with these directives.
6
2 For your safety
WIKA Operating Instructions - Process pressure transmitter CPT-2x
The EU conformity declaration can be found on our homepage.
Duetothedesignofitsprocessttings,thedevicedoesnotsubject
of EU pressure device directive if it is operated at process pressures
≤200bar.
2.6 NAMUR recommendations
NAMUR is the automation technology user association in the process
industry in Germany. The published NAMUR recommendations are
acceptedasthestandardineldinstrumentation.
ThedevicefullstherequirementsofthefollowingNAMURrecom-
mendations:
• NE 21 – Electromagnetic compatibility of equipment
• NE 43 – Signal level for fault information from measuring transduc-
ers
• NE53–Compatibilityofelddevicesanddisplay/adjustment
components
• NE107–Self-monitoringanddiagnosisofelddevices
For further information see www.namur.de.
2.7 Installation and operation in the USA and
Canada
This information is only valid for USA and Canada. Hence the follow-
ing text is only available in the English language.
Installations in the US shall comply with the relevant requirements of
the National Electrical Code (ANSI/NFPA 70).
Installations in Canada shall comply with the relevant requirements of
the Canadian Electrical Code
A Class 2 power supply unit has to be used for the installation in the
USA and Canada.
7
3 Product description
WIKA Operating Instructions - Process pressure transmitter CPT-2x
3 Product description
3.1 Conguration
The scope of delivery encompasses:
• Instrument CPT-2x
The further scope of delivery encompasses:
• Documentation
– Quick setup guide CPT-2x
– Testcerticateforpressuretransmitters
– Instructions for optional instrument features
– Ex-specic"Safety instructions" (with Ex versions)
– Ifnecessary,furthercerticates
Information:
Optional instrument features are also described in this operating
instructions manual.The respective scope of delivery results from the
orderspecication.
This operating instructions manual applies to the following instrument
versions:
• Hardware from 1.0.0
• Software from 1.3.5
Note:
Youcanndthehardwareandsoftwareversionoftheinstrumentas
follows:
• On the type plate of the electronics module
• In the adjustment menu under "Info"
Thetypelabelcontainsthemostimportantdataforidenticationand
use of the instrument:
Scope of delivery
Scope of this operating
instructions
Type label
8
3 Product description
WIKA Operating Instructions - Process pressure transmitter CPT-2x
1
5
6
7
4
2
3
MWP :
Fig. 1: Layout of the type label (example)
1 Instrument type
2 Field for approvals
3 Technical data
4 Product code
5 Serial number of the instrument
6 Symbol of the device protection class
7 ID numbers, instrument documentation
3.2 Principle of operation
CPT-2x is suitable for applications in virtually all industries. It is used
for the measurement of the following pressure types.
• Gauge pressure
• Absolute pressure
• Vacuum
Measured products are gases, vapours and liquids.
Dependingontheprocessttingandmeasurementsetup,measured
products can be also viscous or contain abrasive substances.
The CPT-2x is suitable for the measurement of the following process
variables:
• Process pressure
• Level
Application area
Measured products
Measured variables
9
3 Product description
WIKA Operating Instructions - Process pressure transmitter CPT-2x
Fig. 2: Process pressure measurement CPT-2x
Sensor element is the measuring cell with robust ceramic diaphragm.
Theprocesspressuredeectstheceramicdiaphragmandcausesa
capacitance change in the measuring cell. This capacitance change
is converted into an electrical signal and output as measured value
via the output signal.
16 µm
1
2
3
Fig. 3: Conguration of the ceramic measuring cell
1 Process diaphragm
2 Glass joint
3 Base element
A temperature sensor in the ceramic diaphragm of the ø 28 mm or on
the ceramic base of the ø 17.5 mm measuring cell detects the actual
process temperature.The temperature value is output via the master
sensor.
Even extreme jumps in process temperature are immediately de-
tected by the ø 28 mm measuring cell.The values are compared with
those of an additional temperature measurement on the ceramic base
body. Within a few measuring cycles, the intelligent sensor electron-
ics compensates for otherwise unavoidable measurement devia-
tions caused by temperature shocks in the range. Depending on the
adjusted damping, these cause only slight and brief changes in the
output signal.1)
Measuring system pres-
sure
Measuring system tem-
perature
1) At temperatures above 100 °C the function is automatically deactivated, at
temperatures below 95 °C it is automatically reactivated.
10
3 Product description
WIKA Operating Instructions - Process pressure transmitter CPT-2x
The measuring cell design depends on the selected pressure type.
Relative pressure: the measuring cell is open to the atmosphere.
The ambient pressure is detected in the measuring cell and compen-
sated.Itthushasnoinuenceonthemeasuredvalue.
Absolute pressure: the measuring cell contains vacuum and is
encapsulated.The ambient pressure is not compensated and does
henceinuencethemeasuredvalue.
The following presentations show examples for the installation of the
ceramicmeasuringcellintotheprocessttingandthedierentseal
concepts.
The recessed installation is particularly suitable for applications with
gases, vapours and clear liquids.The measuring cell seal is posi-
tioned laterally as well as in addition in front.
1
2
5
6
3
4
Fig. 4: Recessed installation of the measuring cell (example: manometer con-
nection G½)
1 Measuring cell
2 Seal for the measuring cell
3 Additional, front seal for measuring cell
4 Diaphragm
5 Process tting
6 Seal for the process tting
Thefront-ushinstallationisparticularlysuitableforapplicationswith
viscous and abrasive media and in case of buildup.The measuring
cell seal is positioned laterally.
Pressure types
Seal concepts
Recessed installation
Front-ushmountingwith
single seal
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