Aplisens PC-50 User manual

USER’S MANUAL
PRESSURE TRANSMITTERS
PC-50
DIFFERENTIAL PRESSURE TRANSMITTERS
PR-50, PR-54, PRE-50G
EN.IO.PC.PR.50
MARCH 2022
APLISENS S.A., 03-192 Warsaw, Morelowa 7 St.
tel. [phone]; fax [phone]
www.aplisens.com, e-mail: [email protected]
Revision 01.A.001

PRODUCT CODE –see: (➔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.
PC-50
ID: 0049 0001 0000 0000 0000 0000 0001 87
https://www.aplisens.pl/ID/004900010000000000000000000187/
PR-50
ID: 0052 0001 0000 0000 0000 0000 0001 78
https://www.aplisens.pl/ID/005200010000000000000000000178/
PRE-50G
ID: 0051 0001 0000 0000 0000 0000 0001 81
https://www.aplisens.pl/ID/005100010000000000000000000181/
PR-54
ID: 0053 0001 0000 0000 0000 0000 0001 75
https://www.aplisens.pl/ID/005300010000000000000000000175/

Symbols used
Symbol
Description
Warning to proceed strictly in accordance with the information contained in the doc-
umentation in order to ensure the safety and full functionality of the device.
Information particularly useful during installation and operation of the 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 therequired 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 com-
patibility 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 ob-
served 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 fol-
lowing 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.

EN.IO.PC.PR.50
4Revision 01.A.001/2022.03
TABLE OF CONTENTS
1. INTRODUCTION..........................................................................................5
1.1. Purpose of the document............................................................................................5
2. SAFETY.......................................................................................................5
3. TRANSPORT AND STORAGE....................................................................6
3.1. Delivery check.............................................................................................................6
3.2. Transport.....................................................................................................................6
3.3. Storage........................................................................................................................6
4. GUARANTEE ..............................................................................................6
5. IDENTIFICATION.........................................................................................7
5.1. Manufacturer’s address...............................................................................................7
5.2. Transmitter identification.............................................................................................7
5.3. CE mark, declaration of conformity .............................................................................7
6. INSTALLATION...........................................................................................8
6.1. General recommendations..........................................................................................8
6.1.1. Installation instructions for transmitters with separators.......................................8
7. ELECTRICAL CONNECTION......................................................................9
7.1. Cable connection to transmitter...................................................................................9
7.1.1. Connection of transmitters with PD-type connector .............................................9
7.1.2. Cabling specification ............................................................................................9
7.1.3. Grounding ..........................................................................................................10
7.1.4. Overvoltage protection.......................................................................................10
7.1.5. Shielding, equipotential bonding ........................................................................10
7.2. Transmitter power supply..........................................................................................11
7.2.1. Transmitter supply voltage.................................................................................11
7.2.2. Resistance load in power supply line .................................................................11
7.3. Final inspection of cabling.........................................................................................11
8. START-UP.................................................................................................12
8.1. Correction of impact of transmitter mounting position after installation .....................12
9. MAINTENANCE.........................................................................................13
9.1. Periodic inspections ..................................................................................................13
9.2. Non-periodic inspections...........................................................................................13
9.3. Cleaning/washing......................................................................................................13
9.3.1. Diaphragm cleaning ...........................................................................................13
9.4. Spare parts................................................................................................................13
9.5. Repair .......................................................................................................................13
9.6. Returns......................................................................................................................13
10.SCRAPPING, DISPOSAL..........................................................................14
11.HISTORY OF REVISIONS.........................................................................14
LIST OF DRAWINGS
Figure 1. Electrical connection of the transmitter. ...................................................................9
LIST OF TABLES
Table 1. Symbols appearing on the transmitter's nameplate...................................................7
Table 2. Permissible transmitter supply voltages. .................................................................11

EN.IO.PC.PR.50
Revision 01.A.001/2022.03 5
1. INTRODUCTION
1.1. Purpose of the document
The subject of manual are pressure transmitters PC-50, and differential pressure transmitters
PR-50, PR-54, PRE-50G.The manual applies to the standard versions.
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.
2. 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 instruc-
tions 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 (➔Transmitter identification);
−the protection elements used by the manufacturer to ensure transmitter safety may be
less effective if thedevice is operated in amannernot 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 type, it is
unacceptable to loosen the fixing screws of the connector cover.

EN.IO.PC.PR.50
6Revision 01.A.001/2022.03
3. TRANSPORT AND STORAGE
3.1. Delivery check
After receiving the delivery of the equipment, please refer to the general terms and conditions available
on the manufacturer's website: https://aplisens.com/ogolne_warunki_umow.html.
3.2. Transport
Transport of transmitters shall be carried out with the use of covered means of transport, in original
packages with diaphragm provided with protection. The packaging shall beprotected against movement
and direct impact of atmospheric factors.
3.3. Storage
Transmitters shall be stored in a factory packaging, in a room without vapours and aggressive sub-
stances, protected against mechanical impact.
Allowable ambient and operating temperature range:
PC-50: -40...80°C (-40...176°F);
PR-50, PR-54, PRE-50G: -25...80°C (-13...176°F).
4. 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.

EN.IO.PC.PR.50
Revision 01.A.001/2022.03 7
5. 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 mark
Product QR code
Transmitter type, type of electrical and process connector
Transmitter model ID
Transmitter serial number
Measuring range
Supply voltage values
Output signal
Permissible range of ambient temperature
Maximum static pressure
IP protection rating
Year of production
Note about the obligation to read the manual
//Lower part of the
nameplate//
Special executions
5.3. CE 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 Declaration of Conformity and has CE marking on nameplate.

EN.IO.PC.PR.50
8Revision 01.A.001/2022.03
6. INSTALLATION
6.1. General recommendations
It is recommended that in case of a gaseous medium, the transmitters should be installed
above the measuring point so that condensate may flow to the point from which the meas-
ured pressure is collected, while in case of liquid medium or steam, it should be installed
below the point of pressure intake. The configurationof impulse tubes and valve connection
system should be selected taking into account the measurement conditions.
Differential pressure transmitters for gases PRE-50G should be obligatorily installed verti-
cally.
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.
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.

EN.IO.PC.PR.50
Revision 01.A.001/2022.03 9
7. ELECTRICAL CONNECTION
7.1. Cable connection to transmitter
All connection and installation operations shall be performed with disconnected supply volt-
age 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
In order to properly connect the wires, remove the terminal block with its cover from the contact pins
and remove the block from the cover, undermining it with the end of the screwdriver inserted into the
slot provided for this purpose. Connect the wires to the cube as shown in the picture below.
Figure 1. Electrical connection of the transmitter.
If the sealing of the cables in the gland is ineffective (e.g. when single cables are con-
nected), the opening of the gland must be sealed with a flexible sealing compound to
achieve IP54 protection. It is advantageous to form the section of the signal cable lead-
ing to the cable gland in the form of a drip loop in order to prevent condensation from
running off towards the cable gland.
7.1.2. Cabling specification
Aplisens S.A. recommends using two-wire screened twisted pair cable. The recommended cable outer
diameter is 8-10 mm (PG-11 gland).

EN.IO.PC.PR.50
10 Revision 01.A.001/2022.03
7.1.3. Grounding
Transmitters with PD connections have a ground terminal in the connector which should not be used
for protective earthing or connecting an equipotential bonding cable; it is only used for functional earth-
ing. If the transmitter has, via the process connection, a galvanic connection to a well earthed metal
pipeline or tank, additional functional earthing is not necessary. The earthing terminals in the electrical
connections act as functional earthing. They should be used when the transmitter is not earthed through
the head connection port. If there is no possibility of earthing the cable shield at the power supply point
and the transmitter is earthed through the head connector, earthing terminals can be used to connect
the cable shield. Functional earthing is to ensure correct operation of the transmitter's anti-interference
unit. In standard installations, i.e. when the transmitter is earthed through the pipeline and a possible
cable screen is connected to the transmitter's power supply and measurement installation, the func-
tional earthing terminal should not be used.
7.1.4. Overvoltage protection
Type of transmitter and
electrical connection
Protection between wires (TVS di-
odes) –nominal voltages
Protection between wires and
earth and/or enclosures - type of
protection - nominal voltages
PC-50, PR-50,
PR-54 with PD
connector 4…20 mA out-
put 2-wire transmission
39 V DC
Gas surge arrester–230 V DC
PC-50, PR-50,
PR-54 with PD connector
0…10 V, 0…20 mA output
3-wire transmission
between ‘’+’’ and ‘’-‘’ of power supply
39 V DC
between ‘’-‘’ of power supply
and output 39 V DC
PRE-50G with PD con-
nector, 4…20 mA output
2-wire transmission
39 V DC
PRE-50G with PD con-
nector, 0…10 V output
3-wire transmission
between ‘’+’’ and ‘’-‘’ of power supply
39 V DC
between ‘’-‘’ of power supply
and output 39 V DC
In addition, an external protective device can be used, e.g. UZ-2 system produced by APLISENS S.A.
or others.
7.1.5. Shielding, equipotential bonding
When using a cable in the screen, connect the screen on one side at the transmitter’s power supply
point.

EN.IO.PC.PR.50
Revision 01.A.001/2022.03 11
7.2. Transmitter power supply
7.2.1. Transmitter supply voltage
Power cables may be live.
There is a risk of electric shock and/or explosion.
Table 2. Permissible transmitter supply voltages.
Transmitter
Output signal
Min. supply voltage
Max. supply voltage
PRE-50G
PC-50
PR-50
PR-54
4…20 mA
2-wire transmission
10 V DC
36 V DC
0…20 mA
3-wire transmission
10 V DC
36 V DC
0…10 V
3-wire transmission
13 V DC
39 V DC
7.2.2. 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 trans-
mitters under normal operation conditions is defined as 0,02 A.
The maximum resistance value in the power circuit (along with the power cables resistance) is defined
by the formula:
(for 4…20 mA output)
(for voltage output)
where:
USPLY –voltage at the supply terminals of the 4…20 mA current loop [V].
UMIN –minimum supply voltage of transmitter ➔Table 2. Permissible transmitter supply voltages.
RL_MAX –maximum power supply line resistance [Ω].
7.3. 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 (➔Cable connection
to transmitter)?
−Are all the screws tightened?
−Is the cable gland tightened?

EN.IO.PC.PR.50
12 Revision 01.A.001/2022.03
8. START-UP
The base range of the transmitter can be read out from its nameplate (➔Transmitter identification).
Use the transmitter within the allowable pressure limits. Risk of injury due to component break-
age after exceeding the maximum permitted operating pressure.
8.1. Correction of impact of transmitter mounting position after installation
After installation of the transmitter, it may be necessary to adjust the zero signal (mainly for low pressure
ranges and versions with separators). This can be done using a precision screwdriver and
a milliammeter, or a millivoltmeter for a relative pressure (gauge) transmitter with zero set for atmos-
pheric pressure. The adjustment can be made after the transducer has been supplied with electricity,
the electrical connection has been partially disassembled, and the appropriate potentiometer labelled
'zero' is accessible. At atmospheric pressure in the system, the potentiometer should be used to
reduce the zero signal to its initial value: 4 mA, 0 mA or 0 V depending on the output signal.
At initial pressures other than zero, zero adjustment can only be carried out when the pressure at the
lower limit of the measuring range is delivered to the transmitter input. The zero signal can be adjusted
or shifted up to 10% of the measuring range width (FSO) from the factory set value.

EN.IO.PC.PR.50
Revision 01.A.001/2022.03 13
9. MAINTENANCE
9.1. 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 con-
nections 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.
9.2. 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 in-
correct 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 charac-
teristics.
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.
9.3. Cleaning/washing
To remove impurities from the external surfaces of the transmitter wipe it with a cloth dampened in
water.
9.3.1. 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 trans-
mitter can be damaged.
9.4. Spare parts
Parts of the transmitter that may be worn or damaged and thus replaced in PD connector: terminal
block with angle cover and seal and connector base with seal.
9.5. Repair
Faulty or non-operational transmitter shall be provided to the manufacturer.
9.6. 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.

EN.IO.PC.PR.50
14 Revision 01.A.001/2022.03
10. 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.
11. HISTORY OF REVISIONS
Revision
No.
Document revision
Description of changes
-
DTR.PRE-50G(ENG)/07.2012
-
1
DTR.PRE-50G(ENG) Revision A/03.2014
Editorial changes.
2
DTR.PR-54(ENG)/03.2016
-
3
01.A.001/2022.03
New document edition. Change of electron-
ics, update of supply voltage. Developed by
DBFD.