APLISENS PCE-28 Series Pressure Transmitters User Manual

Before installation, perform a delivery check to ensure all components are present. Transport the device carefully to avoid damage. Store in a dry and safe place away from extreme conditions.

FAQs

Q: Can the pressure transmitter be used in extreme environmental conditions?

A: It is not recommended to install or use the device in conditions with possible mechanical impacts, excessive shocks, vibration, temperature fluctuations, water vapor condensation, dusting, or icing to prevent malfunctions and risks to staff.

Q: Where can I find the most up-to-date manuals?

A: Any changes in product manufacturing may be updated on the manufacturer’s website at www.aplisens.com. It is recommended to check the website for the latest manuals and documentation.

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EN.IO.PCE.PRE.28 JANUARY 2025

Revision 01.B.002

USER’S MANUAL
PRESSURE TRANSMITTERS
PCE-28
DIFFERENTIAL PRESSURE TRANSMITTERS
PRE-28
AND HYDROSTATIC LEVEL PROBES
PCE-28P

APLISENS S.A., 03-192 Warsaw, Morelowa 7 St. tel. +48 22 814 07 77; fax +48 22 814 07 78
www.aplisens.com, e-mail: export@aplisens.com

PRODUCT CODE see: 5.2. Transmitter identification.
The QR code or ID number identifies the transmitter and provides quick access to the following documentation on the manufacturer’s website: user’s manual, declarations of conformity and copies of certificates.
PCE-28
ID: 0030 0006 0000 0000 0000 0000 0001 86 https://www.aplisens.pl/ID/003000060000000000000000000186

PCE-28 (Exi)
ID: 0030 0005 0000 0000 0000 0001 0001 68 www.aplisens.pl/ID/003000050000000000000001000168

PCE-28 (Exi) UKCA
ID: 0030 0005 0000 0000 0000 0003 0001 67 https://www.aplisens.pl/ID/003000050000000000000003000167

PRE-28
ID: 0035 0005 0000 0000 0000 0000 0001 05 https://www.aplisens.pl/ID/003500050000000000000000000105

PRE-28 (Exi)
ID: 0035 0004 0000 0000 0000 0001 0001 84 www.aplisens.pl/ID/003500040000000000000001000184

PRE-28 (Exi) UKCA
ID: 0035 0004 0000 0000 0000 0003 0001 83 https://www.aplisens.pl/ID/003500040000000000000003000183

PCE-28P
ID: 0054 0004 0000 0000 0000 0000 0001 76 https://www.aplisens.pl/ID/005400040000000000000000000176

PCE-28P (Exi)
ID: 0054 0003 0000 0000 0000 0001 0001 58 www.aplisens.pl/ID/005400030000000000000001000158

PCE-28P (Exi) UKCA
ID: 0054 0003 0000 0000 0000 0003 0001 57 https://www.aplisens.pl/ID/005400030000000000000003000157

Symbols used
Symbol

Description

Warning to proceed strictly in accordance with the information contained in the documentation in order to ensure the safety and full functionality of the device.

Information particularly useful during installation and operation of the device.

Information particularly useful during installation and operation of an Ex type device.

Information on disposal of used equipment.
BASIC REQUIREMENTS AND SAFE USE The manufacturer will not be liable for damage resulting from incorrect installation, failure to maintain a suitable technical condition of the device or use of the device other than for its intended purpose. Installation should be carried out by qualified staff having the required authorizations to install electrical and I&C equipment. The installer is responsible for performing the installation in accordance with manual as well as with the electromagnetic compatibility and safety regulations and standards applicable to the type of installation. In systems with I&C equipment, in case of leakage, there is a danger to staff due to the medium under pressure. All safety and protection requirements must be observed during installation, operation and inspections. If a malfunction occurs, the device should be disconnected and handed over to the manufacturer for repair.
In order to minimize the risk of malfunction and associated risks to staff, the device is not to be installed or used in particularly unfavourable conditions, where the following hazards occur: possible mechanical impacts, excessive shocks and vibration; excessive temperature fluctuation; water vapour condensation, dusting, icing.
Changes made to the manufacturing of products may be introduced before the paper version of the manual is updated. The up-to-date manuals are available on the manufacturer’s website: www.aplisens.com.

INTRODUCTION

1.1.

Purpose of the document

The subject of manual are pressure transmitters PCE-28, differential pressure transmitters PRE-28 and hydrostatic level probes PCE-28P. The manual applies to the following versions: standard, intrinsically safe Exi and PED version.

Within the meaning of Directive 2014/68/EU (PED), the transmitters are designed to category I, module A. PED marking does not apply to additional equipment of the transmitters, e.g. separators, valves, connectors, impulse tubes, etc. In the manufacturer’s EU declarations of conformity, the transmitters as designed above have the CE markings. The transmitters with permissible pressure 200 bar and lower are manufactured in accordance with good engineering practice according to article 4 paragraph 3 of Directive 2014/68/EU.

The pressure transmitters: PCE-28, PCE-28P, PRE-28 in realization for sea uses are complied with

DNV-GL Rules for Classification of Ships, High Speed & Light Craft acc. to DNV-CG-0339 guidelines

of August 2021, in following Location Classes:

Temperature: D;

Humidity: B;

Vibrations: B;

EMC:

Enclosure: C.

The transmitters: PCE-28, PCE-28P, PRE-28 in realization for sea uses are complied with Bureau Ver-

itas (BV) for Classification of Ships, High Speed & Light Craft acc. to the requirements of NR320 for

HBV products.

The manual contains data, tips and general recommendations for safe installation and operation of the transmitters, as well as troubleshooting in case of possible failure.

Data on the PCE-28, PRE-28 transmitters and PCE-28P probes in intrinsically safe version according to IECEx, ATEX and UKEX are included in the appendices marked as APPENDIX Ex.01 and APPENDIX Ex.02.

SAFETY

– The installation and start-up of the device and any activities related to operation shall be carried out after thorough examination of the contents of user’s manual and the instructions related thereto.
– Installation and maintenance should be carried out by qualified staff having the required authorizations to install electrical and measuring devices.
– The device shall be used according to its intended purpose in line with the permissible parameters specified on the nameplate ( 5.2 Transmitter identification).
– The protection elements used by the manufacturer to ensure transmitter safety may be less effective if the device is operated in a manner not consistent with its intended purpose.
– Before installing or disassembling the device, it is absolutely necessary to disconnect it from the power source.
– No repairs or alterations to the transmitter electronic system are permitted. Assessment of damages and possible repair may only be performed by the manufacturer or authorized representative.
– Do not use instruments if damaged. In case of malfunction, the device must be put out of operation.
– In case of transmitters equipped with factory-mounted process connector of C and CR type, it is unacceptable to loosen the fixing screws of the connector cover.

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TRANSPORT AND STORAGE

3.1.

Delivery check

After receiving the delivery, please refer to the general terms and conditions of contracts available on the manufacturer website: https://aplisens.com/ogolne_warunki_umow.html

3.2.

Transport

Transport of transmitters and probes shall be carried out with the use of covered means of transport, in original packages with diaphragm provided with protection. The packaging shall be protected against movement and direct impact of atmospheric factors.

3.3.

Storage

Transmitters and probes shall be stored in a factory packaging, in a room without vapours and aggressive substances, protected against mechanical impact at an air temperature and relative humidity not exceeding the permissible ambient and operating parameters in accordance with data sheet. In case of transmitters with exposed diaphragm or separator connections, stored without packing, covers should be installed to protect the diaphragm from damage.

The operating temperature range and the measured medium for transmitters in Ex version according to APPENDIX Ex.01 and APPENDIX Ex.02.

GUARANTEE

General terms and conditions of guarantee are available on the manufacturer’s website: www.aplisens.com/ogolne_warunki_gwarancji

The guarantee shall be repealed if the device is used against its intended use, failure to comply with user’s manual or interference with the structure of the device.

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IDENTIFICATION

5.1.

Manufacturer’s address

APLISENS S.A.

03-192 Warsaw

Morelowa 7 St.

Poland

5.2.

Transmitter identification

Depending on the version of the transmitter, the nameplates may differ in the amount of information and parameters.

Table 1. Symbols appearing on the transmitter’s nameplate

Logo and name of manufacturer

CE and UKCA mark CE and UKCA mark with number notified body

manufacturer’s address

QR code

transmitter, electrical and process connection type

transmitter model ID transmitter serial number *)

measuring range

supply voltage values

output signal

permissible range of ambient temperature

permissible static pressure

IP protection rating

year of production

note about the obligation to read the manual

//The lower part of the nameplate//

special version(s)

*) – in place of the serial number, the information “On sensor” may be placed.

In this case, the serial number should be read from the transmitter sensor housing.

5.3.

CE, UKCA mark, declaration of conformity

The device has been designed to meet the highest safety standards, has been tested and has left the factory in a condition that is safe for operation. The device complies with the applicable standards and regulations listed in the EU or UK Declaration of Conformity and has CE or/and UKCA marking on nameplate.

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INSTALLATION

6.1.

General recommendations

The PCE-28 and PRE-28 transmitters can operate in any position. In order to avoid measurement errors caused by the accumulation of condensate (in gas installations) or gas bubbles (in liquid installations) in impulse lines, assembly solutions using constructions based on available engineering knowledge should be used. For a gaseous medium, this may mean installing the transmitters above the pressure measuring point and for liquids below this point.

For low measurement ranges, there may be an influence of transmitter’s position and influence of impulse lines position and liquid filling method on output signal. Any possible misalignment of the signal should be corrected by resetting the transmitter after mounting.

PCE-28P level probes are installed in places where liquid level is measured. The probe is immersed
in the measured medium and the electronic unit with the connector is above its maximum level. The probe pipe, with lengths over 1 m, it is advisable to attach it in two places. When installing the
probe outdoors, install a canopy or booth over the electronic unit. If the probe is installed in a stream or in a turbulent area, a conduit must be installed 8.2. Correction of impact of transmitter mounting position on site pressure reset

6.1.1.

Installation instructions for transmitters with separators

The protection of the separator diaphragm can only be removed shortly before installation.
Hydrostatic pressure of the manometric liquid column in the transmitter – separator system may cause
incorrect indication of the measured value. After installation, the transmitter must be pressure-reset 8.2. Correction of impact of transmitter mounting position on site pressure reset (not available for transmitter in ALW, ALM and SG housing).
Do not clean or touch separator diaphragms using hard or pointy objects.

Separators with pressure transmitter form a closed, calibrated system filled with gauge fluid. The opening for filling the device with gauge fluid is sealed and must not be opened.

When choosing a mounting location, it is necessary to ensure sufficient stress relief of the capillaries tension in order to avoid excessive bending.

Incorrect installation of the sealing may result in incorrect measurement indications.

Special attention must be paid when selecting correct dimensions of the sealing.

As standard, the separators are not provided with the gaskets.

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ELECTRICAL CONNECTION

7.1.

Cable connection to transmitter internal terminals

EN.IO.PCE.PRE.28

All connection and installation operations shall be performed with disconnected supply voltage and other external voltages, if used.

Failure to provide proper connection of the transmitter may result in danger. Risk of electric shock and/or ignition in potentially explosive atmospheres.

7.1.1.

Connection of transmitters with PD type connector

Loosen the screw in the upper part of the connector and the nut that connects the connector to the transmitter housing, the cable outlet can be set in any direction. It is advantageous to form the conduit in the form of a drip loop to prevent condensation from running down towards the gland. Connect the cables in accordance with the marking on the transmitter and Table 2 or Table 3 (depending on the version). A correctly assembled PD connection should have tightened: the gland nut, the connection nut to the steel housing and the screw connecting both parts of the connector.

7.1.2.

Connection of transmitters with PZ type connector

The electrical connection of the transmitters with the connector should be made by connecting the signal wires to the transmitter terminals. Screw on the cover and the stuffing plug of the gland carefully, making sure that the gasket is tightly compressed on the conduit.

7.1.3.

Connection of transmitters with PK, PKD, SG and PM12 type connector (cable connection)

Electrical connections of transmitters equipped with PK, PKD, PM12 and SG type connectors are made through a terminal box with a gland in which the converter cable connects to the further part of the signal line. The terminal box must not be completely airtight, as the transmitter must be able to “breathe” through a capillary in the connector cable. It is recommended to use a Aplisens S.A. PP terminal box.

7.1.4.

Connection of transmitters with ALW, ALM type connector

Electrical connections transmitters equipped with ALW type or ALM type connector is the same as connecting transmitters with connectors PD or PM12, depending on the ordered version.

Table 2. Connection for the current version

Connection for current version

Connector connection

Connector number

PM12

Cable connection

Wire colour

Type of connector

Red

–

Not supported

Black

–

Not supported

–

Green

SHIELDED CABLE

Not supported

SHIELDED CABLE

Table 3. Connection for the voltage version

Connection for voltage version

Connector connection

Cable connection

Connector number

PM12

Wire colour

Type of connector

Red

Voltage

Not supported

Black

–

Blue

Voltage

SHIELDED CABLE

Green

SHIELDED CABLE

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7.1.5.

Specifications of electrical switching terminals

Internal electrical switching terminals are suitable for conductors with the cross-section from 0.5 to 2.5 mm2 (depending on version). The internal and external electrical ground terminal of the body is suitable for conductors with cross-section from 0.5 to 4 mm2 (depending on version).

7.1.6.

Cabling specification

Aplisens S.A. recommends using two-wire screened twisted pair cable. The outer diameter of the cable shell from 6 to 8 mm (for cable gland PG-9) or from 8 to 10 mm (for cable gland PG-11) is recommended.

7.2.

Earthing

Transmitters with PD connections have a ground terminal in the connector, which should not be used for protective grounding or for connecting the equalizing conductor; it is only used for functional grounding. The transmitters with PZ connection are equipped with internal (in Ex version also external) grounding terminals, to which functional or equipotential grounding conductors can be connected. In transmitters with PK, PKD, SG, PM12 cable connections, the cable screens are brought out and remain at the user’s disposal. The screen of the cable should be connected on one side with the earthing point of the measuring system. The transmitters with ALW and ALM connections are additionally equipped with an external earthing terminal. If the transmitter has a galvanic connection via the process connection to a well-grounded metal pipe or vessel, additional functional grounding is not necessary. The grounding terminals in electrical connections are as functional grounding. They should be used when the transmitter is not grounded through the head connection stub. If it is impossible to ground the cable shield at the power supply point and the converter grounded through the head connector, the grounding clamps can be used to connect the cable shield. Functional grounding is to ensure the correct operation of the anti-interference suppression unit of the transmitter. In standard installations, e.g. when the transmitter is grounded through the pipeline, and the possible cable shield is connected to the transmitter’s power supply and measurement system, the functional grounding terminal should not be used.

7.3.

Overvoltage protection

Transmitter and

Protection between wires Security between the wires and ground

Electrical connection

(transil diodes)

and / or casing – type

type

nominal voltages

protections nominal voltage

PCE-28, PRE-28, PCE-28P

with PD, PK connection PCE-28 with PZ, PKD, SG,
SGM, PM12 connection,

Standard version 36 V DC Exi version 40 V DC

Gas limiter – 230 V DC used in Exi only for “Version SA”

ALW, ALM

Additionally, an external protective device can be used, e.g. the UZ-2 system by APLISENS or others.

7.4.

Shielding, equipotential bonding

In the case of using a cable in the screen, connect the screen on one side at the point where the transmitter is powered.

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7.5. 7.5.1.

Transmitter power supply Transmitter supply voltage
Power cables may be live. There is a risk of electric shock and/or explosion.

Table 4. Permissible transmitter supply voltages

Version and type of transmitter

Output signal

Minimum supply voltage

Maximum supply voltage

– PCE(PRE)-28

4…20 mA 0…10 V

10 V DC*** 13 V DC

36 V DC 30 V DC

– PCE-28P

8 V DC

36 V DC

Standard Version

– PCE-28 ALW/ALM (version with display)

11 V DC

36 V DC

– PCE(PRE)-28/TR** – PCE-28P/TR**
– PCE(PRE)-28 PCE-28P

4…20 mA

10.5 V DC 9 V DC

36 V DC 28 V DC

Exi Version

– PCE-28 ALW/ALM (with display)

12 V DC*

28 V DC

– PCE(PRE)-28/TR** – PCE-28P/TR**

12 V DC

28 V DC

* Turning on the display backlight in the PCE-28 converters with ALW and ALM type connectors increases the

minimum supply voltage for all versions by 3 V. The way to turn the backlight on or off is shown in

Figure 4. Backlighting jumper view at transmitter electric board

** TR- design for Pressure measurements in fast changing processes

***8 V DC special version

7.5.2.

Resistance load in power supply line

The power line resistance, power source resistance and other additional serial resistances increase the

voltage drops between the power source and the transmitter terminals. The maximum current of stand-

ard transmitters under normal operation conditions is defined as I_max = 0.02 A, but during high alarm

the value of current.

The maximum resistance value in the power circuit (along with the power cables resistance) is defined

by the formula:

20
For voltage version

( – ) 0.02

For current version

where:

Usup voltage at the supply terminals of the 4…20 mA current loop [V] Umin minimum supply voltage of transmitter Table 4. Permissible transmitter supply voltages
RLmax maximum power supply line resistance []

7.6.

Final inspection of cabling

After completing the electrical installation of the transmitter it is necessary to check the following:

– Does the supply voltage measured at the transmitter terminals at maximum set current match the range of supply voltage specified on the transmitter nameplate?
– Is the transmitter connected according to the information given in section 7.1 Cable connection to transmitter internal terminals?
– Are all the screws tightened? – Are the transmitter covers tightened? – Are the cable gland and the gland plug tightened?

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START-UP

The basic data of the transmitter and probe can be read out from its nameplate ( 5.2. Transmitter identification).

Use the transmitter within the allowable pressure limits. Risk of injury due to component breakage after exceeding the maximum permitted operating pressure.

8.1.

Alarm configuration

Analog transmitters have the possibility of setting the low alarm level (about 3 mA) or high (about 25 mA). Alarms indicate damage to the pressure sensor and/or the transmitter analog circuit. The setting of alarms is possible only at the production level according to the customer’s order. It is not possible to make changes and configuration of alarms in field conditions.

8.2.

Correction of impact of transmitter mounting position on site pressure reset

After installing the transmitter, you may need to adjust the zero signal. This can be done with a precision screwdriver and a milliammeter, or a millivoltmeter for a pressure transmitter (gauge) with zero adjustable for atmospheric pressure. The adjustment can be made after powering the transmitter, partially disassembling the electrical connection and gaining access to the appropriate potentiometer marked with the symbol “zero”. At atmospheric pressure in the installation, use a potentiometer to bring the zero signal to the initial value: 4 mA or 0.05 V depending on the output signal. At other than zero values of the initial pressure, the zero adjustment can only be performed when the pressure at the lower limit

of the measuring range is applied to the transmitter input. The zero signal can be adjusted or shifted

within 10% of the measuring range width (FSO) from the factory-set value.

Figure 1. View of potentiometers of zero and span (PD, PK, PKD or PM12)

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OPERATION

The transmitter gives the possibility of rotating the housing and adjusting the display position to the mounting position of the body. To rotate the housing, loosen the screw (item 1), position the transmitter housing (item 2) as required, tighten the screw (item 1). Access to the extensions (item 4) used to rotate the display is provided after opening the front cover (item 3).

Figure 2. Rotation of the housing, change of display position and access to buttons
1. Screw. 2. Transmitter housing. 3. Front cover. 4. Buttons.
The LCD has three primary information fields identified in the figure below as LCD1, LCD2, LCD3.

Figure 3. Display information fields
LCD1 field – display field of current or guidance percent preset range display. Depending on the display configuration will be displayed the current value of the current line 4…20 mA with a resolution 0.1 mA, or percent guidance the preset range with a resolution of indications 1%.
LCD2 field – display field of digital value of measured pressure by transmitter, value of pressure rescaled according to the user’s units or the error code. Decimal point position can be set in local MENU.
LCD3 field – information field. During normal operation is designed for continuous display of the base unit or the user units. In case of errors in the transmitter’s work, it displays an error number. In manual mode, the local change settings menu displays options of selecting the setting. It also displays errors related to the implementation of commands in the local menu of the settings change.

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Backlight (available for versions with display: ALW or ALM) local display is equipped in backlight which can be switched on or off depending on needs. This can be done with a jumper on the back of the electronics module after removing the rear cover of the display housing Figure 4. Backlighting jumper view at transmitter electric board Turn on the backlight increases the minimum supply voltage for all version of 3 V

Figure 4. Backlighting jumper view at transmitter electric board

Abbreviations of physical units of pressures and levels and their description:

INH2O INGH FTH2O MMH2O MMHG

Inches of water column with temperature of 0°C
Inches of mercury column with temperature of 0°C Feet of water column with temperature of 20°C (68°F) Millimetres of water column with temperature of 20°C (68°F) Millimetres of mercury column with temperature of 0°C

PSI

Pounds per square inch

BAR

Bars

MBAR Millibars

GSQCM Grams per square centimetre

KGSQCM Kilograms per square centimetre

Pascals

KPA

Kilopascals

TORR Torrs

ATM

Atmosphere

MH2O4

Metres of water column with temperature of 4°C

MPA

Megapascals

INH2O4

Inches of water column with temperature of 4°C

MMH2O4

Millimetres of water column with temperature of 4°C

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Abbreviations displayed during configuration via local MENU and their descriptions:

<-BACK EXIT UNIT TEMP MISC SETLRV SETLRV RESET XX.XXX UNIT
+/-
LCD2DP
X.XXXX XX.XXX XXX.XX XXXX.X XXXXX. DONE FILTER LCD1VR CURREN PERCEN

Return to one level above in local MENU. Going out of the local MENU. Pressure and level unit selection menu. Menu of selecting temperature. Menu of selecting others units. The function allows you to assign a specific value to the 4 mA current. The function allows you to assign a specific value to the 20 mA current. Transmitter hot restart software menu. The function displays the current value of the beginning or the end of the displayed range. The confirmation of the option makes it possible to assign a specific value to the beginning or the end of the set range. Entering the value of the set range. The character is selected by pressing “” or “”. The addition of the digit is done by confirming the previous one and pressing the [] button. The comma is set after the 6th character of the parameter is confirmed. The device will confirm the acceptance of the command with the message “DONE” or report an error number. The parameter is entered in UNIT units. Changing the position of the decimal point of the variable displayed in the LCD2 field of the display. Option of selecting position of comma/decimal point. Option of selecting position of comma/decimal point. Option of selecting position of comma/decimal point. Option of selecting position of comma/decimal point. Option of selecting position of comma/decimal point. The message of acceptance and execution of the setting change. Selection of the averaging time of the displayed process variable. Process variable type displayed in the LCD1 field of the display. The value of the current in the loop will appear on the display in the LCD1 field. The percentage value of the output activation will appear on the display in the field view.

9.1.

Local buttons

Local buttons are used to enable the configuration mode of some transmitter parameters and to navigate through MENU and accept MENU options. The MENU can be accessed by pressing and holding any of the buttons for at least 4 seconds. After this time, the LCD3 field of the local display will show an EXIT message. This signals entering into the MENU navigation mode.

9.2.

Local configuration of setpoints

Transmitter enables local configuration of some of the most common setpoints via local buttons and local LCD display (available for ALW and ALM housing version).

9.3.

Navigation in local setpoints MENU

The MENU can be accessed by pressing and holding any of the buttons for at least 4 seconds. After
this time, the LCD3 field of the local display will show an EXIT message. This signals entering into the
local configuration MENU. By pressing the buttons with arrows [] [] for at least 1 second you can move up or down in MENU.

9.4.

Acceptance of local setpoints

The button marked with symbol [] is used to accept the selection. The acceptance of setpoint change is confirmed by a DONE message displayed on LCD3. After changing the setpoint, the transmitter leaves the local configuration change MENU. If no selection is made in the MENU mode, after 2 minutes the transmitter automatically returns to display of standard messages. The MENU can also be left by selecting and accepting the EXIT option.

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9.5.

Structure of local setpoints MENU

Press and hold any button for 4 seconds.

When navigating in the area of the active local MENU, holding the button required to trigger the action is minimum 1 second. Continuous pressing of the or button results in scrolling of the MENU positions every 1 second. If the local MENU remains inactive for more than 2 minutes, after this time the transmitter will automatically leave the MENU mode and will display the process variable.

Figure 5. Diagram of the display menu (applies to ALW and ALM versions)

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10.

MAINTENANCE

10.1. Periodic inspections
Periodic inspections shall be carried out in accordance with applicable standards. During the inspection, the condition of the pressure (absence of loosened elements and leaks) and electrical (check of connections reliability and condition of gaskets and glands) connectors, condition of separating diaphragms (tarnish, corrosion) and stability of fixing of the housing and mounting bracket (if used) shall be checked. Check the processing characteristics by performing the operations specific for the CALIBRATION and possibly CONFIGURATION procedure.

10.2. Non-periodic inspections
If the transmitter at the installation site has been exposed to mechanical damage, pressure overload, hydraulic pulses, overvoltage, deposits, medium crystallization, undercutting of the diaphragm, or incorrect operation of the transmitter is detected, the device should be inspected. Check the condition of the diaphragm, clean it. Check the electrical functionality of the transmitter and the processing characteristics.

If there is no signal in the transmission line or its value is improper, check the supply line, connection status on terminal blocks, connectors, etc. Check if the supply voltage and load resistance are correct.

10.3. Cleaning/washing To remove impurities from the external surfaces of the transmitter wipe it with a cloth dampened in water.
10.3.1. Diaphragm cleaning The only possible method of cleaning the transmitter diaphragms is to dissolve the sludge produced.
Do not remove deposits and impurities from the transmitter diaphragms, which are formed during operation, mechanically using tools, since the diaphragms and the transmitter can be damaged.

10.4. Spare parts
Parts of the transmitter that may be worn or damaged and thus replaced: – Transmitters with PD connector: terminal block with angular cover and gasket, and connector base with gasket. – Transmitters with PK, PKD connection: all connections. – Transmitters with PZ connector: cover gasket and gland, electrical connection plate with a cover. – Transmitter with PM12 connection: PM12 connector. – Transmitter with ALW or ALM connection: cover gasket and PD or PM12 connector.
Other parts in the case of ATEX, PED type of transmitter may be replaced only by the manufacturer or an authorized representative.

10.5. Repair Faulty or non-operational transmitter shall be provided to the manufacturer or an authorized representative.
10.6. Returns In the following cases, the transmitter should be returned directly to the manufacturer:
– need for repair; – need for factory calibration; – replacement of improperly selected/shipped transmitter.

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11.

SCRAPPING, DISPOSAL

Worn or damaged devices shall be scrapped in accordance with WEEE Directive (2012/19/EU) on waste electrical and electronic equipment or returned to the manufacturer.

12.

HISTORY OF REVISIONS

Revision No.
–

Document revision

Description of changes

Revision F/2018.02 Introduction of the directive ROHS. Editorial changes.

Revision G/2019.01 Marine certificates update.

Revision H/2020.01 PED certificate update.

New version of the document. Replaces the revision H.

01.A.001/2021.06 Change of electronics, supply voltages update. Editorial

changes by DBFD.

01.A.002/2022.05 Supply voltages update. Editorial changes by DBFD.

01.A.003/2023.01

Appendix Ex.01 update. Editorial changes. Prepared by DCF.

01.A.004/2023.07

Appendix Ex.01 update (input parameters for ALW, ALM versions). Prepared by DCF.

01.A.005/2023.11

PM12 connector change, minor editorial changes. Prepared by DBFD.

01.A.006/2024.04 Editorial changes. Prepared by DBFD.

01.B.001/2024.06

Added IECEx (Australia) marking in Annex Ex.01. Prepared by DCF.

01.B.002/2025.01 Added UKEX marking. Prepared by DCF.

Revision 01.B.002/2025.01

EN.IO.PCE.PRE.28 APPENDIX Ex.01

I. APPENDIX Ex.01
PRESSURE TRANSMITTERS TYPE: PC(E)28/XX/YY, DIFFERENTIAL PRESSURE TRANSMITTERS TYPE: PR(E)28/XX/YY,
HYDROSTATIC LEVEL PROBES TYPE: PC(E)28P/XX/YY, INTRINSICALLY SAFE VERSION acc. to ATEX, UKEX and IECEx.

Introduction

The “Appendix Ex.01” to EN.IO.PCE.PRE.28 applies to PC(E)-28/XX/YY, PC(E)-28P/XX/YY and PR(E)-28/XX/YY transmitters in intrinsically safe version according to ATEX, UKEX and IECEx marked on the rating plate as shown in section 2. Extensions XX, YY after the marking product types apply to the types of pressure (XX) and electrical (YY) connections and will not occur later in the documentation. The appendix contains supplementary information relating to the Exi version transmitters. During installation and use of the intrinsically safe transmitters, reference should be made to EN.IO.PCE.PRE.28 together with “Appendix Ex.01”. In the case of Ex transmitters with diaphragm seals, the “IO.SEPARATORS” manual should also be used.

Using of PCE-28, PCE-28P, PRE-28 in hazardous areas

The transmitters are produced in accordance with the requirements of the following standards: EN IEC 60079-0:2018 (IEC 60079-0:2017), EN 60079-11:2012 (IEC 60079-11:2011), EN 50303:2000.

The transmitters with PD, PK, PKM, PZ, SG, SGM electrical connection may operate in areas where

there is a risk of explosion, in accordance with the rating of the explosion protection design:

ATEX, UKEX:

IECEx:

IECEx (Australia):

I M1 Ex ia I Ma

Ex ia I Ma

II 1/2G Ex ia IIC T6/T5/T4 Ga/Gb Ex ia IIC T6/T5/T4 Ga/Gb Ex ia IIC T6/T5/T4 Ga/Gb

II 1D Ex ia IIIC T135ºC Da

Ex ia IIIC T135ºC Da

FTZÚ 12 ATEX 0193X

IECEx FTZÚ 13.0004X

IECEx TSA 24.0007X

EXV 24 UKEX 1805X

The transmitters with PKD and PM12 electrical connection are permitted only for potentially explosive

gas atmospheres and are marked:

ATEX, UKEX:

IECEx:

IECEx (Australia):

II 1/2G Ex ia IIC T6/T5/T4 Ga/Gb
FTZÚ 12 ATEX 0193X EXV 24 UKEX 1805X

Ex ia IIC T6/T5/T4 Ga/Gb IECEx FTZÚ 13.0004X

Ex ia IIC T6/T5/T4 Ga/Gb IECEx TSA 24.0007X

The transmitters with ALW and ALM electrical connection are permitted for potentially explosive gas

and dust atmospheres and are marked:

ATEX, UKEX:

IECEx:

IECEx (Australia):

II 1/2G Ex ia IIC T4 Ga/Gb*

Ex ia IIC T4 Ga/Gb*

II 1D Ex ia IIIC T135ºC Da**

Ex ia IIIC T135ºC Da**

FTZÚ 12 ATEX 0193X

IECEx FTZÚ 13.0004X

IECEx TSA 24.0007X

EXV 24 UKEX 1805X

* – with PD or PM12 connector

** – with PD connector

Revision 01.B.002/2025.01

EN.IO.PCE.PRE.28

APPENDIX Ex.01

Permissible input parameters

The transmitters should be powered from cooperating power supply and measurement devices with relevant intrinsically safe certificates, the parameters of which outputs to the hazardous area should not exceed the permissible supply parameters for the transmitters specified in items a) and b). Transmitters in “SA” version and transmitters operating in the dust zone area should be supplied from devices with a galvanically separated power supply. If it is not possible to use a galvanically separated power supply, the transmitter or any metal parts connected to it should be properly earthed, e.g. using an equipotential bonding system or an equipotential bonding between the transmitter and the negative terminal of the power supply barrier.

The pressure transmitter is an intrinsically safe device with the “ia” protection level, when the supply circuit has the “ia” protection level. a) Permissible input parameters for power supply with a linear output characteristic: Ui = 28 V DC; Ii = 0.1 A; Pi = 0.7 W b) Permissible input parameters for power supply with a trapezoidal and rectangular output characteristic: Ui = 24 V DC; Ii = 0.1 A; Pi = 1.2 W c) Input inductance and capacity:

Transmitter version

Input capacity

Input inductance

Ver. A

Ci = 25 nF*

Li = 0.4 mH*

Ver. B

Ci = 2.5 nF* / **

Li = 0 mH* / **

* One should take into account the capacity and inductance of the cable, which permanently connected cable

are: CK = 0.2 nF/m and LK = 1 µH/m.

**For ALW, ALM electrical connector: Ci = 25 nF, Li = 0.4 mH

Input capacitance CW and input inductance LW of the transmitters with PK, PKM, PKD, SG or SGM
electrical connections, taking into account the parameters of the permanently connected cable are accordingly:
CW = Ci + a · CK = 25 nF + a · 0.2 nF/m or Cw = Ci + a · Ck = 2.5 nF + a · 0.2 nF/m LW = Li + a · LK = 400 µH + a · 1 µH/m or Lw= Li + a·Lk = 0 µH + a · 1 µH/m Where: a – length of the mounted permanently cable in meters;
Ta = -40ºC to … – see table Z1

Table Z1. Temperature classes and maximum surface temperature for group III

Pi [W]

Ta [ºC]

Temperature class

0.7

T4, group I, group III – 135ºC

1.2

55 80

T5 T4, group I, group III – 135ºC

Special conditions for use:

Ambient temperature range from Ta = -40ºC to…- see table Z1. Process temperature (medium) at the diaphragm of the transmitter or probe must be in range of ambient temperature. In case of use the transmitter in dust atmosphere, supplying voltage could occur on transmitter housing. It should be taken into consideration during transmitter installation. In case of use titan parts in diaphragm seal, during installation and operation of the device the diaphragm seal should be protected against mechanical impact.
Version of transmitter or probe with surge arrester, marked on the plate “Version SA”, does not meet the requirements of Section 6.3.13 of the EN 60079-11:2012 (test of isolation 500 V AC). This must be taken into consideration during the installation of transmitter.
Transmitters with display (with electrical connections ALW, ALM) for Group lll, should be installed in a place and in a way that prevents electrostatic charging.
In hazardous areas, diaphragm seals of transmitters covered with a PTFE layer should be installed in places and in a manner preventing electrostatic charging.

Revision 01.B.002/2025.01

EN.IO.PCE.PRE.28
APPENDIX Ex.01 At the customer’s request, elements of diaphragm seal can be made of titanium. This version of the transmitter has information on the label that the titanium elements are used (e.g. PCE-28/S-Ch titan/PD). Then user should secure the diaphragm seal against the possibility of an impact.
When medium temperature is higher than ambient temperature – Ta, use of separating elements such a diaphragm seal, or looped siphon tube etc. is necessary. The process temperature (medium) at the diaphragm of the transmitter must be within the ambient temperature range.

Electrostatic hazards

A plastic nameplate, a light alloy housing varnish, a Teflon layer covering the elements of the transmitter diaphragm seal, a Teflon cable sheath and a heat-shrinkable sheath applied to a metal capillary constitute a non-conductive layer applied to the conductive substrate. Such transmitters, in dust explosion hazard zones, should be installed in a way that prevents electrostatic charging, in particular through contact with electrified dust falling off or blown from devices operating nearby.

How to connect Ex transmitters: PCE-28, PCE-28P and PRE-28

Connections of the transmitter and devices in the transmitter measuring loop should be made in accordance with the intrinsic safety and explosion-proof standards and the conditions of use in hazardous areas. Failure to follow these rules may result in an explosion and hazards to workers.

Figure 1. Connection of the transmitter with PD and PM12 electrical connectors

Figure 2. Connection of the transmitter with PZ electrical connector

Figure 3. Connection of the transmitter with PK electrical connector

Revision 01.B.002/2025.01

EN.IO.PCE.PRE.28 APPENDIX Ex.01
Figure 4. Connection of the transmitter with PKD electrical connector Figure 5. Connection of the transmitter with SG electrical connector
Figure 6. Connection of the transmitter with PM12 electrical connector

Figure 7. Connection of the transmitter with ALW electrical connector
24

Revision 01.B.002/2025.01

EN.IO.PCE.PRE.28 APPENDIX Ex.01
Figure 8. Connection of the transmitter with ALM electrical connector
It is not allowed to repair or otherwise interfere with the transmitter’s electrical circuits in any way. Damage and possible repair can be assessed and done by the manufactures or another authorised party only.

Revision 01.B.002/2025.01

EN.IO.PCE.PRE.28 APPENDIX Ex.02
II. APPENDIX Ex.02

PRESSURE TRANSMITTER TYPE: PCE28/TR/XX/YY, PC28P/TR/XX/YY, DIFFERENTIAL PRESSURE TRANSMITTER TYPE: PRE28/TR/XX/YY, HYDROSTATIC LEVEL PROBES TYPE: PCE28P/TR/XX/YY, INTRINSICALLY SAFE VERSION acc. to ATEX KDB 08ATEX002X

Introduction

The “Appendix Ex.01” to EN.IO.PCE.PRE.28 applies to PCE-28/XX/YY, PCE-28P/XX/YY and PRE-28/XX/YY transmitters in Ex version according to ATEX marked on the rating plate as shown in section 2 and 3 and signed “Ex” in the Product Certificate, only. Extensions XX, YY after the marking product types apply to the types of pressure (XX) and electrical (YY) connections and will not occur later in the documentation.
The appendix contains supplementary information relating to the Ex version transmitters. During installation and use of the Ex transmitters, reference should be made to EN.IO.PCE.PRE.28 together with “Appendix Ex.02”.

Using PCE-28, PRE-28,PCE-28P transmitters in hazardous area

The transmitters are produced in accordance with the requirements of the following standards: EN 60079-0:2013, EN 60079-11:2012, EN 50303:2000 The transmitters may operate in areas where there is a risk of explosion, in accordance with the rating of the explosion protection design:

I M1 Ex ia I Ma
II 1/2G Ex ia IIC T4/T5/T6 Ga/Gb
II 1D Ex ia IIIC T110ºC Da KDB 08ATEX002X

Permissible input parameters (based on data from the ATEX KDB

08ATEX002X)

The transmitters should be supplied from cooperating power supply and measurement devices with relevant intrinsically safe certificates, the parameters of which outputs to the hazardous area should not exceed the permissible supply parameters for transmitters specified in items a) and b).

The pressure transmitter is an intrinsically safe device with the “ia” protection level, when the supply circuit has the “ia” protection level.

a) Permissible input parameters for power supply with a linear output characteristic: Ui = 28 V DC; Ii = 0.1 A b) Permissible input parameters for power supply with a trapezial and rectangular output characteristic Ui = 24 V DC; Ii = 0.1 A c) Input inductance and capacity: Ci = 25 nF; Li = 0.4 mH Pi for all type of power supply see Table Z2

Table Z2. Temperature classes and maximum Surface temperature for group III

Pi[W] 0.7 0.9 1.2

Ta [ºC] 45 80 80 75 80

Temperature class
T6 T5, T4, group I, group III – 110ºC T5, T4, group I, group III – 110ºC
T5 T4 group I, group III – 110ºC

Revision 01.B.002/2025.01

EN.IO.PCE.PRE.28
APPENDIX Ex.02 Special conditions for safe use: If titanium parts are used in the structure of the separator, the diaphragm seal should be protected against mechanical damage during installation and operation of the transmitter.
At the customer’s request, the separator elements can be made of titanium. This version of the transmitter has information on the plate that a separator with titanium elements was used (e.g. PCE-28 / TR / S-Ch titanium / PD). In this case, the user is obliged to protect the separator against the possibility of impact.
The process temperature at the transmitter diaphragm must be within the transmitter operating temperature range and the temperature class. In the case of measuring the medium causing the transmitter to heat up above the operating temperature range, use separating elements, e.g. diaphragm seals (see IO.SEPARATORS), loop-siphon tubes, etc.

Supply examples

4.1. Power supply with a linear output characteristic Power supply with a linear characteristic may be e.g. a typical barrier with parameters Uo = 28 V; Io = 0.093 A; Rw = 300 4.2. Power supply with a trapezial output characteristic
Supply parameters, for example – Ta 80ºC and T4: a) Uo = 24 V; Io = 0.08 A; Po = 1.2 W b) Uo = 24 V; Io = 0.05 A; Po = 0.6 W 4.3. Power supply with rectangular output characteristic Uo = 24 V; Io = 0.05 A; Po = 1.2 W

How to connect Ex transmitters: PCE28/TR, PCE28P/TR and

PRE28/TR

– acc. to section 5 and 6 EN.IO.PCE.PRE.28 APPENDIX Ex.01

Revision 01.B.002/2025.01

Documents / Resources

APLISENS PCE-28 Series Pressure Transmitters [pdf] User Manual
PCE-28, PRE-28, PCE-28P, PCE-28 Series Pressure Transmitters, PCE-28 Series, Pressure Transmitters, Transmitters

References

User Manual

APLISENS PCE-28 Series Pressure Transmitters

Product Usage Instructions

FAQs

INTRODUCTION

INSTALLATION

ELECTRICAL CONNECTION

OPERATION

MAINTENANCE

Documents / Resources

References

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