7501QA01
LERBAKKEN 10, 8410 RØNDE DENMARK. WWW.PRELECTRONICS.COM
Revision date:
2015-09-16
Version Revision
V2R0
Page:
2/6
Ex ia installation
General installation instructions
The sensor circuit is not infallibly galvanic isolated from the supply output circuit. However, the
galvanic isolation between the circuits is capable of withstanding a test voltage of 500Vac during 1
minute.
The enclosure must be connected to the potential matching line
If the transmitter is physically connected to a possible source of heating or cooling, e.g. by
mounting to a process pipe or a temperature sensor, the temperature at the point of connection
shall be within the ambient temperature range as given in the certificate or this manual.
Cable entries and blanking elements shall be used that are suitable for the application and correctly
installed.
For installalation in zone 0 / EPL Ga, the transmitter must be installed such, that even in the event
of rare incidents, ignition sources due to impact and friction, sparks are excluded.
Protection degree of IP 54 according to EN 60529 is achieved if certified cable glands or conduit
entry devices are used that are suitable for the application and correctly installed.
Protection degree of IP 68 according to EN 60529 is only achieved if certified cable glands or
conduit entry devices are used that are suitable for the application and correctly installed with
sealing washers or Loctite sealant added to the threads of the sensor, blanking elements and cable
glands.
For group III (dust), electrostatic charging of the paint layer shall be avoided
7501QA01
LERBAKKEN 10, 8410 RØNDE DENMARK. WWW.PRELECTRONICS.COM
Revision date:
2015-09-16
Version Revision
V2R0
Page:
3/6
Ex nA, ic installation:
Certificate
DEKRA
15ATEX0058
X
Marking
II 3 G Ex nA IIC T6…T4 Gc
II 3 G Ex ic IIC T6...T4 Gc
II 3 D Ex ic IIIC T100°C Dc
Standards:
EN 60079-0:2012, EN 60079-11:2012, EN60079-15:2010
Sensor
Terminal: 3,4,5,6
Ex ic
Uo: 9.6 VDC
Io: 28 mA
Po: 67 mW
Lo: 45 mH
Co: 28 μF
Supply
Terminal: 1,2
Ex ic
Ui: 35 VDC
Li: 0 μH
Ci: 2 nF
Supply
Terminal: 1,2
Ex nA
U : 35 VDC
1
2
6
5
4
3
+
-
Supply
7501
Hazardous area
Zone 2, 22
Non Hazardous Area
Type of protection Ex nA
O-ring Sealing : Silicone
T4: -40 ≤ Ta ≤ 85ºC T4 (7501A )
T4: -40 ≤ Ta ≤ 80ºC T4 (7501B )
T6: -40 ≤ Ta ≤ 60ºC T6
O-ring Sealing : FKM
T4: -20 ≤ Ta ≤ 85ºC (7501A )
T4: -20 ≤ Ta ≤ 80ºC (7501B )
T6: -20 ≤ Ta ≤ 60ºC
Type of protection Ex ic
T4: -40 ≤ Ta ≤ 85ºC T100ºC (7501A )
T4; -40 ≤ Ta ≤ 80ºC T100ºC (7501B )
T6: -40 ≤ Ta ≤ 60ºC T85 ºC
7501QA01
LERBAKKEN 10, 8410 RØNDE DENMARK. WWW.PRELECTRONICS.COM
Revision date:
2015-09-16
Version Revision
V2R0
Page:
1/6
7501 ATEX Installation
For safe installation of 7501 the following must be observed. The module shall only be installed by
qualified personnel who are familiar with the national and international laws, directives and
standards (EN60079-14) that apply to this area.
Year of manufacture can be taken from the first two digits in the serial number.
Ex ia installation:
ATEX Certificate
DEKRA
15ATEX0058
X
Marking
Standards:
EN 60079-0: 2012, EN 60079-11: 2012, EN60079-26:2007
Non Hazardous Area
Hazardous area
Zone 0, 1, 2, 20, 21, 22, (Mines)
II 1 G Ex ia IIC T6...T4 Ga
II 1 D Ex ia IIIC T100°C Da
I M1 Ex ia I Ma ( 7501B )
Sensor
Terminal: 3,4,5,6
Uo: 9.6 VDC
Io: 28 mA
Po: 67 mW
Lo: 35 mH
Co: 3.5 μF
Supply
Terminal: 1,2
Ui: 30 VDC
Ii: 120 mA
Pi: 0.84 W
Li: 0 μH
Ci: 2 nF
T4: -40 ≤ Ta ≤ 85ºC T100 ºC ( 7501A)
T4: -40 ≤ Ta ≤ 80ºC T100 ºC ( 7501B)
T5: -40 ≤ Ta ≤ 60ºC T75 ºC
T6: -40 ≤ Ta ≤ 45ºC T60 ºC
1
2
6
5
4
3
+
-
Barrier
7501
7501QA01
LERBAKKEN 10, 8410 RØNDE DENMARK. WWW.PRELECTRONICS.COM
Revision date:
2015-09-16
Version Revision
V2R0
Page:
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Ex d, tb installation:
ATEX Certificate
DEKRA
15ATEX0058
X
Marking
Standards:
EN 60079-0:2012, EN 60079-1:2007, EN60079-31:2014
Non Hazardous Area
Hazardous area
Zone 1, 2, 21, 22
II 2 G Ex d IIC T6…T4 Gb
II 2 D Ex tb IIIC T100°C Db
Terminal: 3,4,5,6
Sensor: RTD or TC
Terminal: 1,2
Umax: 35 VDC
1
2
6
5
4
3
+
-
Supply
7501
Type of protection Ex d
T4,T5: -40 ≤ Ta ≤ 85ºC (7501A )
T4,T5: -40 ≤ Ta ≤ 80ºC (7501B )
T6: -40 ≤ Ta ≤ 70ºC
Type of protection Ex tb
O-ring Sealing : Silicone
-40 ≤ Ta ≤ 85ºC T100°C (7501A )
-40 ≤ Ta ≤ 80ºC T100°C (7501B )
-40 ≤ Ta ≤ 70ºC T85°C
O-ring Sealing : FKM
-20 ≤ Ta ≤ 85ºC T100°C (7501A )
-20 ≤ Ta ≤ 80ºC T100°C (7501B )
-20 ≤ Ta ≤ 70ºC T85°C
7501QA01
LERBAKKEN 10, 8410 RØNDE DENMARK. WWW.PRELECTRONICS.COM
Revision date:
2015-09-16
Version Revision
V2R0
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Ex nA, ic installation:
For an ambient temperature exceeding 70 °C, heat resistant cables and cable glands suitable for at
least 90°C shall be used.
If the transmitter is physically connected to a possible source of heating or cooling, e.g. by
mounting to a process pipe or a temperature sensor, the temperature at the point of connection
shall be within the ambient temperature range as given in the certificate.
Cable entries and blanking elements shall be used that are suitable for the application and correctly
installed.
The enclosure must be connected to the potential matching line
Applied screw terminal torque is max 0.4 Nm on all terminals.
Protection degree of IP 54 according to EN 60529 is achieved if certified cable glands or conduit
entry devices are used that are suitable for the application and correctly installed.
Protection degree of IP 68 according to EN 60529 is only achieved if certified cable glands or
conduit entry devices are used that are suitable for the application and correctly installed with
sealing washers or Loctite sealant added to the threads of the sensor, blanking elements and cable
glands.
For group III (dust), electrostatic charging of the paint layer shall be avoided
7501QA01
LERBAKKEN 10, 8410 RØNDE DENMARK. WWW.PRELECTRONICS.COM
Revision date:
2015-09-16
Version Revision
V2R0
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Ex d, tb installation:
Unused cable entries must be sealed by the blanking elements supplied with the 7501 or other Ex d
and/or Ex tb certified blanking elements suitable for the application. .
Only Ex d and/or Ex tb certified cable and cable glands shall be used that are suitable for the
application and correctly installed.
Protection degree of IP 54 according to EN 60529 is achieved if Ex d certified cable glands or
conduit entry devices are used that are suitable for the application and correctly installed.
Protection degree of IP 68 according to EN 60529 is only achieved if Ex d certified cable glands or
conduit entry devices are used that are suitable for the application and correctly installed with sealing
washers or Loctite sealant added to the threads of the sensor, blanking elements and cable glands.
The display cover must be screwed all the way in and the safety catch must be fastened before
putting into service. Do not open display cover until 30 minutes after disconnecting power to the
equipment allowing internal capacitors to discharge, or do not open display cover unless area is
known to be safe
For an ambient temperature exceeding 70 °C, heat resistant cables and cable glands suitable for at
least 90°C shall be used.
If the transmitter is physically connected to a possible source of heating or cooling, e.g. by mounting
to a process pipe or a temperature sensor, the temperature at the point of connection shall be within
the ambient temperature range as given in the certificate. The sensor shall be suitable for use as
entry device on an Ex d enclosure and shall not add volume to the 7501 enclosure. The thread of the
sensor must be in compliance with EN60079-1 / EN60079-31.
The enclosure must be connected to the potential matching line.
When the process temperature range exceeds the service temperature range it shall be verified by
on-site temperature measurements, taking the worst case conditions into account, that the service
temperature does not exceed the range of the module.
For group III (dust), electrostatic charging of the paint layer shall be avoided
No modification to the enclosure is allowed by the customer except as mentioned in the manual or
installation drawing.
7501QC01
LERBAKKEN 10, 8410 RØNDE DENMARK. WWW.PRELECTRONICS.COM
Revision date:
2015-09-22
Version Revision
V2R0
Page:
2/3
Explosion proof:
Explosion proof for Hazardous area
Class I, Division 1, Groups ABCD;
Class II, Division 1, Groups EFG;
Class III
Ex d IIC, Class I, Zone 1
T4,T5: -20/-40 ≤ Ta ≤ 85ºC T100°C
T6: -20/-40 ≤ Ta ≤ 70ºC T85°C
Non Hazardous Area
1
2
6
5
4
3
+
-
Supply
7501
Terminal: 1,2
Umax: 35 VDC
Terminal: 3,4,5,6
Sensor: RTD or TC
O-ring Sealing
Silicone rubber:-40°C ≤Ta ≤ +85°C
FKM rubber: -20°C ≤Ta ≤ +85°C
7501QC01
LERBAKKEN 10, 8410 RØNDE DENMARK. WWW.PRELECTRONICS.COM
Revision date:
2015-09-22
Version Revision
V2R0
Page:
1/3
7501 CSA Installation
For safe installation of 7501 the following must be observed. The module shall only be installed by
qualified personnel who are familiar with the national and international laws, directives and
standards that apply to this area.
Intrinsic Safe Installation:
Hazardous classified Location
Class I,Division1, Groups, ABCD;
Class II,Group EFG;
Class III, Division 1.
Class I, Zone 0, IIC
Ex/AEx ia IIC Ga
Warning:
Substitution of components may impair intrinsic safety.
The module must be installed according to the installation codes stipulated in the Canadian
Electrical Code (CEC) or for US the National Electrical Code (NEC).
Non classified Location
Terminal: 3,4,5,6
Uo: 9.6 VDC
Io: 28 mA
Po: 67 mW
Lo: 35 mH
Co: 3.5 μF
Terminal: 1,2
Ui: 30 VDC
Ii: 120 mA
Pi: 0.84 W
Li: 0 μH
Ci: 2 nF
UM < 250V
Voc or Uo < Vmax or Ui
Isc or Io < Imax or Ii
Po < Pi
Ca or Co > Ci + Ccable
La or Lo > Li + Lcable
The barrier must not
be connected to any
associated apparatus
which uses or
generates more than
250 VRMS
1
2
6
5
4
3
+
-
Barrier
7501
T4: -40 ≤ Ta ≤ 85ºC T100 ºC
T5: -40 ≤ Ta ≤ 60ºC T75 ºC
T6: -40 ≤ Ta ≤ 45ºC T60 ºC
7501QC01
LERBAKKEN 10, 8410 RØNDE DENMARK. WWW.PRELECTRONICS.COM
Revision date:
2015-09-22
Version Revision
V2R0
Page:
3/3
Explosion proof Installation.
Conduit and sensor connections must be in NPT modified threads.
Only third party certified sensors suitable for “Class I, Division 1 / Zone 1, Groups ABCD / IIC“ may
be connected to the Temperature Transmitter.
For Class I Group A installation and Class I Zone 1 installation, conduit seal is required within 18
inches of enclosure.
For an ambient temperature exceeding 70°C, heat resistant cables and cables suitable for at least
90°C shall be used.
The display cover must be screwed all the way in and the safety catch must be fastened before
putting the module into service.
Do not open / remove front cover unless area is known to be safe.
The remote temperature sensor must comply with the requirements for installation in hazardous
locations “Class I, Division 1 / Zone 1, Groups ABCD / IIC”
The remote temperature sensor must comply with the requirements for Ex d installation
Only certified cable and cable glands shall be used that are suitable for the application and
correctly installed.
For protection according to Type 4X / IP66 use Loctite 577 on threads of sensor and cable glands.
The enclosure must be connected to the potential matching line
Unused cable entries must be sealed by the blanking elements supplied with the 7501 or other Ex
certified blanking elements.
If the transmitter is physically connected to a possible source of heating or cooling, e.g. by
mounting to a process pipe or a temperature sensor, the temperature at the point of connection
shall be within the ambient temperature range as given in the certificate.
When the process temperature range exceeds the service temperature range it shall be verified by
on-site temperature measurements, taking the worst case conditions into account, that the service
temperature does not exceed the range of the module.
For Class II, III, electrostatic charging of the paint layer shall be avoided.
No modification to the enclosure is allowed by the customer except as mentioned in the manual or
installation drawing.
