Aplisens APC-2000ALWL User manual

-
EXPLOSION-PROOF DEVICE MANUAL
SMART PRESSURE TRANSMITTERS
APC-2000ALW, APC-2000ALW SAFETY, APC-2000ALW/L
SMART PRESSURE DIFFERENTIAL TRANSMITTERS
APR-2000ALW, APR-2000ALW SAFETY,
APR-2000ALW with diaphragm seals,
APR-2000ALW/G, APR-2000ALW/L, APR-2200ALW/L
SMART LEVEL PROBES
APR-2000YALW
EN.IX.APC.APR.ALW
AUGUST 2020
APLISENS S.A., 03-192 Warsaw, Morelowa 7 St
tel. [phone]; fax [phone]
www.aplisens.com, e-mail: [email protected]
Revision 01.A.005

Symbols used
Symbol
Description
Warning about the necessity follow strictly the information provided in the
documentation in order to ensure safety and full functionality of the device.
Information particularly useful for device installation and operation.
Information particularly useful for Ex device installation and operation.
Waste of electrical and electronic equipment disposal information.
BASIC REQUIREMENTS AND OPERATION SAFETY
The manufacturer shall not be liable for any damage resulting from
incorrect installation, failure to maintain the device in proper condition, or
device use other than intended.
Installation should be carried out by qualified staff having the required
authorization to install electrical and I&C equipment. The fitter is
responsible for performing the installation in accordance with this
manual and with the electromagnetic compatibility and safety regulations
and standards applicable to the type of installation.
If leakage in systems with I&C equipment occurs, pressurized medium
poses a threat to the personnel. All safety and protection requirements
must be observed during transmitter installation, operation and
inspections.
If a malfunction occurs, the device should be removed and sent for
repair to the manufacturer or a facility authorized by the manufacturer.
In order to minimize the risk of malfunction and associated risks to staff, do
not install or use the device in particularly adverse conditions, where the
following hazards occur:
Possible mechanical impacts, excessive shocks and vibration;
Excessive temperature fluctuation;
Water condensation, dust, icing.
Explosion-proof installations should be made with special care and in
accordance with standards and regulations applicable to this type of
installations.
Changes can be made in the manufacturing before the paper version of user documentation
is updated. Up-to-date user manuals are available on the manufacturer's website:
www.aplisens.com.

EN.IX.APC.APR.ALW
Revision 01.A.005/2020.08 3
TABLE OF CONTENTS
1. INTRODUCTION.......................................................................................... 5
2. SAFETY....................................................................................................... 5
3. COMPLETE DELIVERY CHECKLIST ......................................................... 5
4. IDENTIFICATION MARKS........................................................................... 6
5. TRANSMITTER DESIGN............................................................................. 6
6. ELECTROSTATIC HAZARDS..................................................................... 7
7. SPECIAL CONDITIONS OF USE ................................................................ 7
8. TRANSMITTER PROTECTION LEVEL (EPL) AND HAZARDOUS AREAS8
9. INTRINSICALLY-SAFE Exi TRANSMITTERS ACCORDING WITH
CERTIFICATES KDB 19 ATEX 0011X AND IECEX KDB 19.0003X ................ 9
9.1. Standards used for assessment..................................................................................9
9.2. Transmitter explosion-proofing designations according with certificates KDB 19 ATEX
0011X and IECEx KDB 19.0003X ...............................................................................9
9.3. Minimum supply voltage............................................................................................10
9.4. Load resistance......................................................................................................... 10
10. INTRINSICALLY-SAFE Exi TRANSMITTERS ACCORDING WITH
CERTIFICATES FTZU 08 ATEX 0020X AND IECEX FTZU 14.0026X............ 10
10.1. Standards used for assessment ........................................................ 10
10.2. Transmitter explosion-proofing designations according with certificates FTZU 08
ATEX 0020X and IECEx FTZU 14.0026X.................................................................10
10.3. Minimum supply voltage............................................................................................11
10.4. Load resistance......................................................................................................... 11
11. PERMISSIBLE PARAMETERS OF Exi TRANSMITTERS ........................ 11
11.1. Linear power supply example.................................................................................... 12
11.2. Trapezoidal power supply example...........................................................................12
11.3. Orthogonal power supply example............................................................................12
12. CONNECTING Exi TRANSMITTERS AND PROBES................................ 13
13. FLAMEPROOF Exd TRANSMITTERS ACCORDING WITH
CERTIFICATES KDB 19 ATEX 0011X AND IECEX KDB 19.0003X .............. 14
13.1. Standards used for assessment................................................................................14
13.2. Transmitters explosion-proofing designations according with certificates KDB 19
ATEX 0011X and IECEx KDB 19.0003X...................................................................14
14. PERMISSIBLE PARAMETERS OF Exd TRANSMITTERS ....................... 15
14.1. Ambient temperature range and temperature classes ..............................................15
14.2. Power supply, connection and operation of Exd transmitters....................................16
15. ADDITIONAL INFORMATION ................................................................... 21
15.1. Additional information................................................................................................ 21
15.2. History of revisions....................................................................................................21

EN.IX.APC.APR.ALW
4Revision 01.A.005/2020.08
LIST OF DRAWINGS
Figure 1. Sample transmitter nameplate with common Exi and Exd designation ....................6
Figure 2. Transmitter installation in potentially explosive areas. .............................................8
Figure 3. Principle of power supply from a linear source.......................................................12
Figure 4. Principle of power supply from a trapezoidal source. .............................................12
Figure 5. Connecting Exi transmitters and probes ................................................................13
Figure 6. Connecting Exd transmitters and probes ...............................................................16
Figure 7. Installation of cable entries and blinding plugs .......................................................18
Figure 8. Flameproof joints of enclosure. ..............................................................................20
LIST OF TABLES
Table 1. Minimum supply voltage of and Exi transmitter according with certificates KDB 19
ATEX 0011X and IECEx KDB 19.0003X................................................................................10
Table 2. Minimum supply voltage of and Exi transmitter according with certificates FTZU 08
ATEX 0020X and IECEx KDB 14.0026X................................................................................11
Table 3. Permissible input parameters of an Exi transmitter..................................................11
Table 4. Ambient temperature range and temperature classes for Exd transmitters .............15
Table 5. Maximum supply voltage for Exd transmitters .........................................................16
Table 6. List of equivalent cable entries ................................................................................18
Table 7. List of equivalent blinding plugs ...............................................................................19
Table 8. List of flameproof joints in a flameproof enclosure...................................................20

EN.IX.APC.APR.ALW
Revision 01.A.005/2020.08 5
1. INTRODUCTION
This manual is only applicable to the APC-2000ALW, APC-2000ALW Safety,
APR–2000ALW, APR–2000ALW Safety, APR–2000ALW with diaphragm seals, APR-
2000ALW/G and APR–2000YALW series transmitters in Ex (explosion-proof), Exi
(intrinsically safe), Exd (flameproof), and both Exi and Exd variants. The transmitters are
identified with model ID on nameplates and also as specified in section 4. Ex information are
included in the “Product Certificate”. Model ID indicates type and version of transmitter.
The manual contains most important information on intrinsically safe and flameproof
transmitters compliant with ATEX directive and IECEx requirements. If explosion-proof
transmitters are installed, refer to this manual and also:
- EN.IO.APC.APR.ALW.SFT manual for APC-2000ALW Safety, APR-2000ALW Safety
series transmitters,
- EN.IO.APC.APR.ALW manual for APC-2000ALW, APR-2000ALW, APR-2000ALW/G
and APR–2000YALW series transmitters.
2. SAFETY
Read this manual carefully before installing, commissioning and operating the
transmitter.
Installation and maintenance should be carried out by qualified staff having the
required authorization to install electrical and measuring devices.
The transmitter should used as intended within permissible parameters.
Power source must be disconnected before installing or removing the transmitter.
No repairs or alterations to the transducer electronic system are permitted. Only
the manufacturer or a facility authorized by the manufacturer may assess
damages and repair the device (if possible).
Do not use damaged instruments. In case of failure, the device must be
disconnected.
If the equipment is used in Ex zones, the technical requirements specified in this
manual and applicable local (national) regulations must be followed.
3. COMPLETE DELIVERY CHECKLIST
The user receives the following with the transmitter:
a) Product Certificate, which also constitutes a warranty card.
b) Declaration of Conformity.
c) Certificate copy (on request).
d) EN.IX.APC.APR.ALW explosion-proof device manual.
e) EN.IO.APC.APR.ALW.SFT user manual or EN.IO.APC.APR.ALW user manual.
Items b), c), d), e) are available at www.aplisens.com.

EN.IX.APC.APR.ALW
6Revision 01.A.005/2020.08
4. IDENTIFICATION MARKS.
Ex transmitters are delivered with a nameplate which contains data specified
EN.IO.APC.APR.ALW.SFT or EN.IO.APC.APR.ALW and also the following:
a) Designation of explosion-proof design type, certificate number.
b) Parameter values, e.g. Ui, Ii, Ci, Li for Exi transmitters.
c) Year of manufacture.
d) “SA Version” inscription —isolated power supply for intrinsically safe transmitters with
overvoltage protection in which ground isolated power supply should be used.
Figure 1. Sample transmitter nameplate with common Exi and Exd designation
5. TRANSMITTER DESIGN
The basic transmitter components are: an enclosure made of 316 (1.4401) stainless steel or
aluminum, measuring head where a pressure signal is converted to an electrical signal, and
an electronic module converting the signal from the head to an output signal. Transmitters in
aluminum enclosures are allowed for II and III group, and transmitters in steel enclosures are
allowed for I, II and III group.

EN.IX.APC.APR.ALW
Revision 01.A.005/2020.08 7
6. ELECTROSTATIC HAZARDS
The paint, plastic nameplate and diaphragm seals coated with PTFE form a non-conducting
layer applied on a conducting base of enclosure or diaphragm seals. Transmitters with this
design in a dust-explosion zone should be installed in a place where electrostatic charging is
impossible, in particular by contact with electrically charged dust falling off or blown from
neighboring devices.
7. SPECIAL CONDITIONS OF USE
a) The maximum temperature of the external heating source cannot heat the transmitter
above the maximum declared ambient temperature.
b) Some gaps of flameproof joint are smaller and longer than those required in table 1 of
EN 60079-1 (see Table 8).
c) In hazardous zones of dust explosion, transmitters with painted aluminum enclosures as
well as transmitters equipped with equipped with plastic nameplate and PTFE-coated
diaphragm separator components should be installed in way that prevents electrostatic
charging specified in accordance with point 6.
d) A diaphragm separator with titan components must be protected from mechanical
impacts.
e) An intrinsically safe transmitter version with surge arrester, marked on the nameplate as
“SA” does not meet the requirements of clause 10.3 of EN 60079-11 (500Vrms). The
device should be installed in accordance with point 12.
f) If a transmitter with a nameplate containing various explosion-proof designs is used, the
applied protection type must be permanently marked on the nameplate before
installation (see Figure 1).
g) For a transmitter with a flameproof enclosure, the diaphragm should not be exposed to
damage during transmitter installation and operation. The transmitter diaphragm is
made of stainless steel, Hastelloy or tantalum and must not be exposed to contact with
a medium that may damage it.
h) Galvanically separated part of apparatus placed into measuring head is electrically
connected with mass of enclosure. It should be taken into account when installing the
apparatus with remote measuring head on cable.

EN.IX.APC.APR.ALW
8Revision 01.A.005/2020.08
8. TRANSMITTER PROTECTION LEVEL (EPL) AND
HAZARDOUS AREAS
Ga/Gb (Da/Db) EPL protection level means that the transmitter can be installed in Zone 1
(21) or 2 (22), and transmitter process connectors can connect to Zone 0 (20). Gb (Db) EPL
protection level means that the transmitter and process connector can be installed in Zone 1
(21) or 2 (22). Da EPL protection level means that the transmitter and process connector can
be installed in Zone 20 or 21. Transmitters for mining applications Mb should be turned off if
explosion hazard occurs.
Figure 2. Transmitter installation in potentially explosive areas.

EN.IX.APC.APR.ALW
Revision 01.A.005/2020.08 9
9. INTRINSICALLY-SAFE Exi TRANSMITTERS ACCORDING
TO CERTIFICATES KDB 19 ATEX 0011X AND IECEX KDB
19.0003X
9.1. Standards used for assessment
The transmitters are manufactured in compliance with the following standards:
EN 60079-0:2012+A11:2013 (IEC 60079-0:2011 ed. 6.0)
EN 60079-11:2012 (IEC 60079-11:2011 ed. 6.0).
9.2. Transmitter explosion-proofing designations according to
certificates KDB 19 ATEX 0011X and IECEx KDB 19.0003X
The following ATEX and IECEx markings apply only to intrinsically safe transmitters marked
with the type and model ID:
APC-2000ALW ID 0005 0004 ...,
APC-2000ALW Safety ID 0001 0004 ...,
APR-2000ALW ID 0006 0004 ...,
APR-2000ALW Safety ID 0002 0004 …,
APR-2000ALW
with diaphragm seals ID 0007 0004 ...,
APR-2000ALW/G ID 0008 0004 ...,
APR-2000YALW ID 0009 0004 ...,
ATEX:
II 1/2G Ex ia IIC T4/T5 Ga/Gb
II 1D Ex ia IIIC T105ºC Da
I M1 Ex ia I Ma (for the version with 1.4401 (316) steel enclosure)
KDB 19 ATEX 0011X
IECEx:
Ex ia IIC T4/T5 Ga/Gb
Ex ia IIIC T105ºC Da
Ex ia I Ma (for the version with 1.4401 (316) steel enclosure)
IECEx KDB 19.0003X
As standard, the transmitters are manufactured for explosive gas atmospheres.
A customer can also order a transmitter for explosive dust atmospheres and for
mining applications.
Transmitters with common Exi and Exd designation, as presented in Figure 1,
become intrinsically safe transmitters when Exi field is permanently marked.

EN.IX.APC.APR.ALW
10 Revision 01.A.005/2020.08
9.3. Minimum supply voltage
Table 1. Minimum supply voltage of an Exi transmitter according with certificates
KDB 19 ATEX 0011X and IECEx KDB 19.0003X
Minimum supply voltage for
transmitters with backlight off
Minimum supply voltage for
transmitters with backlight on *)
11.5 V
14.5 V
*) Backlight can only be turned on at transmitter manufacturing
stage
9.4. Load resistance
a) For a linear power supply from a barrier
󰇟󰇠    󰇛 󰇜

b) For power supply from a trapezoidal or orthogonal source.
󰇟󰇠   

Rw –barrier resistance;
Uapp –minimum voltage of the barrier used
10. INTRINSICALLY-SAFE Exi TRANSMITTERS ACCORDING
TO CERTIFICATES FTZU 08 ATEX 0020X AND IECEX
FTZU 14.0026X
10.1. Standards used for assessment
The transmitters are manufactured in compliance with the following standards:
EN 60079-0:2012+A11:2013 (IEC 60079-0:2011 ed. 6.0)
EN 60079-11:2012 (IEC 60079-11:2011 ed. 6.0).
10.2. Transmitter explosion-proofing designations according to
certificates FTZU 08 ATEX 0020X and IECEx FTZU 14.0026X
The following ATEX and IECEx markings apply only to intrinsically safe transmitters marked
with the type and model ID:
APC-2000ALW ID 0005 0007 ...,
APR-2000ALW ID 0006 0007 ...,
APR-2000ALW/G ID 0008 0007 ...,
APR-2000ALW
with diaphragm seals ID 0007 0007 ...,
APR-2000YALW ID 0009 0007 ...,
APC-2000ALW/L ID 0010 0007 ...,
APR-2200ALW/L ID 0012 0007 ...,
APR-2000ALW/L ID 0011 0007 ...,
APR-2200ALW/D ID 0013 0007 ...,
ATEX:
II 1/2G Ex ia IIC T4/T5 Ga/Gb
II 1/2G Ex ia IIB T4/T5 Ga/Gb (version with PTFE-shielded cable)
II 1D Ex ia IIIC T105ºC Da
IM1 Ex ia I Ma (for the version with 1.4401 (316) steel enclosure)
FTZU 08 ATEX 0020X

EN.IX.APC.APR.ALW
Revision 01.A.005/2020.08 11
IECEx:
Ex ia IIC T4/T5 Ga/Gb
Ex ia IIB T4/T5 Ga/Gb (version with PTFE-shielded cable)
Ex ia IIIC T105ºC Da
Ex ia I Ma (for the version with 1.4401 (316) steel enclosure)
IECEx FTZU 14.0026X
As standard, the transmitters are manufactured for explosive gas atmospheres. A
customer can also order a transmitter for explosive dust atmospheres and for mining
applications.
10.3. Minimum supply voltage
Table 2. Minimum supply voltage of an Exi transmitter according with certificates
FTZU 08 ATEX 0020X and IECEx KDB 14.0026X
Minimum supply voltage
10.5 V
10.4. Load resistance
a) For a linear power supply from a barrier
󰇟󰇠    󰇛 󰇜

b) For power supply from a trapezoidal or orthogonal source.
󰇟󰇠   

Rw –barrier resistance;
Uapp –minimum voltage of the barrier used
11. PERMISSIBLE PARAMETERS OF Exi TRANSMITTERS
Table 3. Permissible input parameters of an Exi transmitter
Linear power
supply
Orthogonal power supply
Trapezoidal power
supply
Ui = 30 V
Ui = 24 V
Ui = 24 V
Ui = 24 V, UQ=48 V
Ii = 0.1 A
Ii = 0.025 A
Ii = 0.05 A
Ii = 0.05 A
Pi = 0.75 W
Pi = 0.6 W
Pi = 1.2 W
Pi = 0.7 W
Ci = 2.5 nF
Ci = 2.5 nF
Ci = 2.5 nF
Ci = 2.5 nF
Li = 18 µH
Li = 18 µH
Li = 18 µH
Li = 18 µH
-40⁰C≤Ta≤+80⁰C (T5)
-40⁰C≤Ta≤+80⁰C (T5)
-40⁰C≤Ta≤+80⁰C (T4)
-40⁰C≤Ta≤+80⁰C (T5)
Supply power to transmitters from supply and measurement devices with applicable
intrinsic safety certificates whose parameters of outputs to a hazard zone should not
exceed the permissible transmitter power supply parameters specified above.

EN.IX.APC.APR.ALW
12 Revision 01.A.005/2020.08
11.1. Linear power supply example
For example, linear power supply is provided by a typical barrier with the following
parameters
Uo = 28V; Io = 0.1A; Po = 0.7W; Rw = 280.
Figure 3. Principle of power supply from a linear source.
11.2. Trapezoidal power supply example
Uo = 24V; Io = 50mA; Po = 0.7W
An example of trapezoidal power supply is shown in Figure 4.
Figure 4. Principle of power supply from a trapezoidal source.
If 
, UQ, I0, P0have the following relations:
 

If  UQ, I0, P0have the following relations:
󰇛 󰇜

Resistance Rw:


11.3. Orthogonal power supply example
Uo = 24 V Io = 25 mA Po = 0.6 W
Uo = 24 V Io = 50 mA Po = 1.2 W
Orthogonal power supply means that the voltage of an intrinsically safe power adapter
does not change until the current limiter is activated.
The level of protection of orthogonal power supply adapters is usually “ib”. A transmitter
supplied from such power adapter is usually an “ib” intrinsically safe device.
transmitter
transmitter
Io
Ui
Uo
Q
I
Rw
UQ
Ii

EN.IX.APC.APR.ALW
Revision 01.A.005/2020.08 13
An example of power supply in practice:
A stabilized power adapter with Uo = 24 V, “ib” protection level and current limited to
Io = 25 mA.
12. CONNECTING Exi TRANSMITTERS AND PROBES
Transmitter and equipment in the transmitter measurement loop must be connected
in compliance with intrinsic safety and explosion proofing standards and conditions
for application in risk zones. If intrinsic safety rules are not followed, explosion can
occur and people can be exposed to danger.
Figure 5. Connecting Exi transmitters and probes
The transmitter is equipped with an additional communication resistor RD=240Ω.
<SIGNAL -> and <TEST -> terminals are short-circuited in factory. RDresistor is used
when the transmitter need to be communicated with locally (from its terminals) and a
Ro < 240 Ω. <SIGNAL -> and <TEST -> terminals must be open-circuited then.
If the medium temperature can exceed Ta=80°C, separating elements, such as
diaphragm separators, siphon tubes, etc., should be used. The transmitter operating
temperature Tp must meet the Tp≤Ta condition.
The electrical system for connecting transmitters should meet installation
requirements of applicable standards.
No repairs or alterations to the transmitter electrical system are permitted. Only the
manufacturer or a facility authorized by the manufacturer may assess damages and
repair the device (if possible).

EN.IX.APC.APR.ALW
14 Revision 01.A.005/2020.08
“Version SA” transmitters should be supplied from devices equipped with galvanically
isolated power supply. If galvanically isolated power supply is not possible, the
transmitter or metal parts connected to it should be properly grounded, for instance
with an equipotential wiring or an equipotential bonding between the transmitter and
the negative pole of power supply barrier.
A transmitter enclosure has two holes for installing a cable entry and blinding plug
with M20x1.5 or 1/2 NPT thread. Transmitters with common Exi and Exd designation,
as presented in Figure 1, become intrinsically safe transmitters when Exi field is
permanently marked. If such transmitter is delivered without a cable gland, the
customer is obliged to install a cable gland with at least IP66 protection and operation
temperature range suitable for the installation site. In transmitters used in dust
explosion zones, the cable glands installed by the customer should be certified and
have a designation proper to dust zones where the transmitters are used.
13. FLAMEPROOF Exd TRANSMITTERS ACCORDING TO
CERTIFICATES KDB 19 ATEX 0011X AND IECEX KDB
19.0003X
13.1. Standards used for assessment
The transmitters are manufactured in compliance with the following standards:
EN 60079-0:2012+A11:2013 (IEC 60079-0:2011 ed. 6.0)
EN 60079-11:2012 (IEC 60079-11:2011 ed. 6.0)
EN 60079-1:2014 (IEC 60079-1:2014 ed. 7.0)
EN 60079-31:2014 (IEC 60079-31:2013 ed. 2.0)
EN 60079-26:2015 (IEC 60079-26:2014 ed. 3.0)
13.2. Transmitters explosion-proofing designations according to
certificates KDB 19 ATEX 0011X and IECEx KDB 19.0003X
The following ATEX and IECEx markings apply only to flameproof safe transmitters marked
with the type and model ID:
APC-2000ALW ID 0005 0008 ...,
APC-2000ALW Safety ID 0001 0004 ...,
APR-2000ALW ID 0006 0008 ...,
APR-2000ALW Safety ID 0002 0004 …,
APR-2000ALW
with diaphragm seals ID 0007 0008 ...,
APR-2000ALW/G ID 0008 0008 ...,
APR-2000YALW ID 0009 0008 ...,

EN.IX.APC.APR.ALW
Revision 01.A.005/2020.08 15
ATEX:
II 1/2G Ex ia/db IIC T6/T5 Ga/Gb
II 1/2D Ex ia/tb IIIC T105ºC Da/Db
I M2 Ex db ia I Mb (for the version with 1.4401 (316) steel enclosure)
KDB 19 ATEX 0011X
II 2G Ex ia/db IIC T6/T5 Gb
II 2D Ex ia/tb IIIC T105ºC Db
I M2 Ex db ia I Mb (for the version with 1.4401 (316) steel enclosure)
KDB 19 ATEX 0011X
IECEx:
Ex ia/db IIC T6/T5 Ga/Gb
Ex ia/tb IIIC T105ºC Da/Db
Ex db ia I Mb (for the version with 1.4401 (316) steel enclosure)
IECEx KDB 19.0003X
Ex ia/db IIC T6/T5 Gb
Ex ia/tb IIIC T105ºC Db
Ex db ia I Mb (for the version with 1.4401 (316) steel enclosure)
IECEx KDB 19.0003X
Transmitters with common Exi and Exd designation, as presented in Figure 1,
become flameproof transmitters when Exd field is permanently marked.
14. PERMISSIBLE PARAMETERS OF Exd TRANSMITTERS
14.1. Ambient temperature range and temperature classes
Table 4. Ambient temperature range and temperature classes for Exd transmitters
Operating temperature range
Temperature class and
maximum surface temperature
Ambient
temperature
Process
temperature
-40ºC ≤ Ta≤ 40ºC
-40ºC ÷ 40ºC
T6/T105ºC
-40ºC ≤ Ta≤ 75ºC
-40ºC ÷ 75ºC
T5/T105ºC
If the medium temperature can exceed Tamax, separating elements, such as
diaphragm separators, siphon tubes, etc., should be used. The transmitter operating
temperature Tp must meet the Tp≤Tamax condition.

EN.IX.APC.APR.ALW
16 Revision 01.A.005/2020.08
14.2. Power supply, connection and operation of Exd transmitters
Connect the transmitter according to the wiring diagram (Figure 6). The transmitter
electrical connections in potentially explosive zones should be made by personnel
having necessary knowledge and experience in this respect. The transmitters should
be properly grounded by means of a grounding terminal. If the transmitter has metal
contact with grounding structural elements or piping, separate transmitter grounding
is not necessary.
Transmitter and equipment in the transmitter measurement loop must be connected
in compliance with explosion proofing standards and conditions for application in
explosion risk zones. If these rules are not followed, explosion can occur and people
can be exposed to danger.
Figure 6. Connecting Exd transmitters and probes
The transmitters should be supplied with maximum voltage specified in the table
below (24 VDC rating) from transformer power supplies or other devices providing at
least enhanced isolation between primary and secondary winding in which voltages
not larger than 250 VAC occur. It is responsibility of the user to provide power supply
compliant with the requirements above.
Table 5. Maximum supply voltage for Exd transmitters
Maximum supply voltage
APC-2000ALW Safety,
APR-2000ALW Safety
APC-2000ALW, APR-2000ALW,
APR-2000ALW/G, APR-2000YALW
36 VDC
55 VDC
In an explosion risk zone, do not remove the cover of supplied transmitter and do not
connect to the terminals, and do not change the position of local indicator (display).

EN.IX.APC.APR.ALW
Revision 01.A.005/2020.08 17
For transmitter calibration or check outside a risk zone, a communicating device can
be connected to <SIGNAL +> and <TEST +> terminals.
The transmitter is equipped with a communication resistor RD= 240 Ω, which is
short-circuited at <SIGNAL -> and <TEST -> terminals in factory. RDresistor is used
when the transmitter need to be communicated with locally (from its terminals) and a
Ro < 240 Ω. <SIGNAL -> and <TEST -> terminals must be open-circuited then.
In order to secure the side covers against loosening, unscrew the hex socket
screws pressing the screw heads against the edges of the covers. The method of
locking the covers against unscrewing and the possible method of sealing the
transmitter are presented in the PL.IO.APC.APR.ALW.SFT user manual.
No repairs or alterations to the transmitter enclosure elements and electrical system
are permitted. Only the manufacturer or a facility authorized by the manufacturer may
assess damages and repair the device (if possible).
Due to the type of enclosure material (light alloy with high aluminum content), the
user is obliged to ensure that in the transmitter installation site its enclosure cannot
be hit and, consequently, damaged.
In a transmitter enclosure there are two holes for installing, one for a cable entry and
second for a blinding plug with M20x1.5 or 1/2 NPT thread. As standard, the
transmitter is delivered to the customer without cable gland installed. After
consultation with the manufacturer, the user can purchase a transmitter with a cable
gland, or without a cable gland and the missing cable gland purchase separately. A
transport plug is installed in the cable gland place. In such case, the transport plug
should be removed and appropriate cable gland installed (Figure 7) before the
transmitter is installed. It is responsibility of the user to install a certified cable gland
compliant with the list of equivalent cable glands in Table 6. List of equivalent cable
entries. As a blinding plug, an Aplisens plug supplied with the transmitter or a
certified blinding plug compliant with the list of equivalent blinding plugs in Table 6
can be used. It is allowed to install other types of certified cable entries and blinding
plugs about marking Exd IIC Gb, Extb IIIC Db and Exd I Mb with at least IP66
protection and -40°C...75°C temperature range.
Apply LOCTITE 577 on the 1/2 NPT thread of cable gland before installation.
When connecting, make sure that the cable type and diameter is suitable for the
cable gland used and temperature in the installation site.

EN.IX.APC.APR.ALW
18 Revision 01.A.005/2020.08
Figure 7. Installation of cable entries and blinding plugs
Table 6. List of equivalent cable entries
Cable entry type
Manufacturer
Thread
Designation
IP
Certificate no.
501/423
Hawke
International
M20x1.5
(1/2” NPT)
Exd IIC Gb
Extb IIIC Db
67
CML
19ATEX1167X
501/421
Hawke
International
M20x1.5
(1/2” NPT)
Exd IIC Gb
Extb IIIC Db
67
CML
19ATEX1167X
ICG 623
Hawke
International
M20x1.5
(1/2” NPT)
Exd IIC Gb
Extb IIIC Db
67
Baseefa
06ATEX0058X
501/453/RAC
Hawke
International
M20x1.5
(1/2” NPT)
Exd IIC Gb
Extb IIIC Db
67
CML
19ATEX1167X
501/453/Universal
Hawke
International
M20x1.5
(1/2” NPT)
Exd IIC Gb
Extb IIIC Db
67
CML
18ATEX1268X
ICG/653/Universal
Hawke
International
M20x1.5
(1/2” NPT)
Exdb IIC Gb
Extb IIIC Db
67
CML
18ATEX1268X
ICG/653/Universal/L
Hawke
International
M20x1.5
(1/2” NPT)
Exd IIC Gb
Extb IIIC Db
67
CML
18ATEX1268X
A2F, A2FRC
CMP-
Products
M20x1.5
(1/2” NPT)
Exd IIC Gb
Exta IIIC Da
67
CML
18ATEX1321X
SS2K
CMP-
Products
M20x1.5
(1/2” NPT)
Exd IIC Gb
Exta IIIC Da
67
CML
18ATEX1321X
E1FW, E2FW
CMP-
Products
M20x1.5
(1/2” NPT)
Exd IIC Gb
Exta IIIC Da
Exd I Mb
67
CML
18ATEX1324X
PX2K, PXSS2K,
PX2KX
CMP-
Products
M20x1.5
(1/2” NPT)
Exdb IIC Gb
Exta IIIC Da
Exdb I Mb
67
CML18ATEX1325
X

EN.IX.APC.APR.ALW
Revision 01.A.005/2020.08 19
Table 7. List of equivalent blinding plugs
Plug type
Manufacturer
Thread
Designation
IP
Certificate no.
475
Hawke
International
M20x1.5
(1/2” NPT)
Exd IIC Gb
Extb IIIC Da
Exd I Mb
67
Baseefa
10ATEX0262X
477
Hawke
International
M20x1.5
(1/2” NPT)
Exd IIC Gb
Extb IIIC Da
Exd I Mb
67
Baseefa
10ATEX0262X
747, 757 and 767
CMP-Products
M20x1.5
(1/2” NPT)
Exd IIC Gb
Exta IIIC Da
Exd I Mb
67
CML 18ATEX1320X
Use a shielded or unshielded, non-reinforced cable with compact structure and
circular cross-section in an non-hygroscopic sheath made of an elastomer, e.g.
YKSLY 2*1, YnTKSYekw 1*2*1, LIYCY 2*1.
If a cable of different design has to be used, it should be agreed on with the
transmitter manufacturer in order to choose a suitable cable gland or individually
purchase a cable gland suited to the cable used. The list of equivalent cable entries
is given above (Table 6). The cables should be protected from damage by routing
them in cable trays, jacket tubes, cable ladders, by using fixed mounts, etc.
When periodic inspections are performed, the covers tightness, cable entry and cable
fixing in the cable entry should be checked. Visually check the enclosure and cable
for mechanical damage, and the nameplate for legibility. The sensor diaphragm
should be also included to periodic inspections. There shouldn’t be a signs of
damage. During maintenance it is recommended to apply acid-free petroleum jelly on
threads connection.

EN.IX.APC.APR.ALW
20 Revision 01.A.005/2020.08
Figure 8. Flameproof joints of enclosure.
Table 8. List of flameproof joints in a flameproof enclosure
No
Length of joint
(min. actual)
L
[mm]
Diameter
D-d
[mm]
Quantity
of joint
Comments
(min. values acc. to
EN 60079-1)
D
[mm]
d
[mm]
L4
13.2
ᴓ15+0,027
󰢌

0.097
2
length of joint min.12,5
L5
12
M72x1.5
M72x1.5
2
min. 5 meshing turns
L6
9
M20x1.5
M20x1.5
2
min. 5 meshing turns
L7
12.7
1/2 NPT
1/2 NPT
2
min. 5 meshing turns
on each surface
L8
10
1
Bonded joint,
length of joint min.10
The diaphragm should not be exposed to damage during transmitter installation and
operation. The transmitter diaphragm is made of stainless steel or Hastelloy and
must not be exposed to contact with a medium that may damage it.
The connecting and operating general rules for an Exd transmitters should be
compliant with the rules and standards applicable to devices in a flameproof
enclosure:
EN 60079-14 –Electrical devices in explosive atmospheres. Part 14: Electrical
installations in risk areas (other than mines).
EN 60079-17 –Electrical devices in explosive atmospheres. Part 17: Electrical
installations inspection and maintenance in risk areas (other than mines).