Faudi AFGUARD User manual

Version 2.6
Operating instructions
AFGUARD®
Zone 0 and Zone 1
Page: 1
of: 41
FAUDI Aviation GmbH, Scharnhorststraße 7 B, D-35260 Stadtallendorf
BA_AFGUARD_Ex_rev2.6_Englisch_l
ogo
Electronic Water Sensor (EWS) for the measurement of free
water in Jet Fuel

Version 2.6
Operating instructions
AFGUARD®
Zone 0 and Zone 1
Page: 2
of: 41
FAUDI Aviation GmbH, Scharnhorststraße 7 B, D-35260 Stadtallendorf
BA_AFGUARD_Ex_rev2.6_Englisch_l
ogo
Contact address of manufacturer:
FAUDI Aviation GmbH
Scharnhorststrasse 7 B
D- 35260 Stadtallendorf
Germany
Phone: [phone] - 570
Fax: [phone] - 223
Email: [e-mail]
Website: www.faudi-aviation.com
Table of contents Page
1Safety instructions................................................................................................ 4
1.1 Designated use.................................................................................................... 5
1.2 Installation, Commissioning and Operation.......................................................... 5
1.3 Operational safety................................................................................................ 5
1.4 Return.................................................................................................................. 5
1.5 Degree of protection (IP-Code)............................................................................ 6
2Identification......................................................................................................... 7
2.1 Product structure.................................................................................................. 7
2.1.1 Nameplate........................................................................................................... 8
2.2 Scope of delivery ................................................................................................. 9
3Installation and dismantling.................................................................................10
3.1 Incoming acceptance, transport, storage.............................................................10
3.2 Installation conditions..........................................................................................11
3.2.1 Dimensions........................................................................................................11
3.2.2 Mounting Position...............................................................................................11
3.3 Thread for AFGUARD installation .......................................................................12
3.3.1 Installation location.............................................................................................12
3.3.2 AFGUARD orientation in the pipe section...........................................................17
3.3.3 Measuring system..............................................................................................17
3.3.4 Installing a measuring point................................................................................18
3.4 Installation examples...........................................................................................19
3.5 Check of correct assembly..................................................................................19
3.6 Dismantling.........................................................................................................19
4Cabling................................................................................................................20
4.1 Direct connection to isolated converter with power supply...................................20
5Operation............................................................................................................21
5.1 Mode of Operation..............................................................................................21
5.2 Signal output.......................................................................................................22
5.3 Calibration...........................................................................................................22
6Commissioning ...................................................................................................23
6.1 Check of Installation and function........................................................................23
7Loop check .........................................................................................................24
8Maintenance.......................................................................................................25
8.1 Cleaning of the AFGUARD®................................................................................25
9Recertification and recalibration of AFGUARD®..................................................26
9.1 Firmware on AFGUARD®....................................................................................26
10 Accessories ........................................................................................................27
10.1 Installation accessories.......................................................................................28
11 Trouble-shooting.................................................................................................29
11.1 Trouble-shooting instructions..............................................................................29
11.2 Sensor checks ....................................................................................................29
11.3 Spare parts.........................................................................................................29

Version 2.6
Operating instructions
AFGUARD®
Zone 0 and Zone 1
Page: 3
of: 41
FAUDI Aviation GmbH, Scharnhorststraße 7 B, D-35260 Stadtallendorf
BA_AFGUARD_Ex_rev2.6_Englisch_l
ogo
11.4 Return.................................................................................................................29
11.5 Disposal..............................................................................................................29
12 Technical Data....................................................................................................30
12.1 Input....................................................................................................................30
12.2 Ambient conditions..............................................................................................30
12.3 Performance and parameter ...............................................................................30
12.4 Process conditions..............................................................................................30
12.5 Layout.................................................................................................................30
12.6 Reliability prediction............................................................................................31
12.7 FMEA..................................................................................................................31
13 EC-Type Examination Certificate (Original).........................................................32
13.1 EC-Type Examination Certificate (Translation)....................................................35
13.2 PESO Certificate for India...................................................................................38
13.3 EG-Konformitätserklärung –EC Declaration of conformity..................................38
14 Issues and solutions............................................................................................39
15 Declaration of decontamination...........................................................................41

Version 2.6
Operating instructions
AFGUARD®
Zone 0 and Zone 1
Page: 4
of: 41
FAUDI Aviation GmbH, Scharnhorststraße 7 B, D-35260 Stadtallendorf
BA_AFGUARD_Ex_rev2.6_Englisch_l
ogo
1 Safety instructions
This manual provides installation, operation and routine maintenance instructions for
the FAUDI Aviation AFGUARD®electronic water sensor.
Read this manual and ensure that you fully understand its content before you attempt
to install, use or maintain the AFGUARD®electronic water sensor.
Important safety information is highlighted in this manual as WARNINGs and CAUTIONs.
The AFGUARD®is an intrinsically safe Sensor, suitable for the needs of field and laboratory
analysis of the content of free water in Jet Fuel.
Work on electrical equipment is only to be carried out by trained specialists as per the
regulations currently in force.
Attention must be paid to the requirements of VDE 0100 when setting high-power electrical
units with nominal voltages of up to 1000V, together with the associated standards and
stipulations.
Check the details on the housing to ensure that the equipment is connected to the correct
mains voltage.
Protect against touching dangerously high electrical voltages.
The equipment is only to be set within the permitted range of temperatures and pressures.
For use in hazardous areas, observe the relevant national and international instructions and
regulations.
Check that the location is weather-protected. It is recommended that the AFGUARD®sensor
is not subjected to either direct rain or sunshine.
Installation, maintenance and monitoring may only be carried out by authorised personnel
with respect to the relevant stipulations. Repairs should only be carried out by the supplier.
All part replacements which are not specified or approved by FAUDI Aviation GmbH, as well
as any repair and service with the use of unauthorized parts shall invalidate the Ex-
Certificate.
In case of any doubts, please directly contact FAUDI Aviation GmbH or the authorized
FAUDI Aviation Distributor or Service organisation.
The AFGUARD®sensor is certified by DEKRA Exam in Bochum, an authorized company
for official approval of electric equipment in Germany.
Detailed information and a copy of the certificate are attached to this operating manual.
Installation and operation of the analyser has to be carried out in accordance to the
conditions in the Ex-Certificate (see appendix). Only if such conditions are followed, can the
reliability of operation in hazardous areas be guaranteed.
E
AFGUARD®is subject to the standards of electrical equipment in accordance to safety
regulations:
oEN 60079-0 (General Requirements);
oEN 60079-11 (Equipment protection by intrinsic safety "i");
oEN 60079-18 (Equipment protection by encapsulation "m");
oEN 60079-26 (Equipment protection for Group II Category 1 G);
oEN 60079-28 (Protection of equipment and transmission systems using optical
radiation).
For operation of equipment in hazardous areas group II category 2, Explosion group “IIB”,
Temperature class T4 with ambient temperature range –30 °C Ta+60 °C.

Version 2.6
Operating instructions
AFGUARD®
Zone 0 and Zone 1
Page: 5
of: 41
FAUDI Aviation GmbH, Scharnhorststraße 7 B, D-35260 Stadtallendorf
BA_AFGUARD_Ex_rev2.6_Englisch_l
ogo
1.1 Designated use
The AFGUARD®is suitable for continuous measurement of free water in Jet Fuel.
Typical applications of the AFGUARD®are:
Measuring the content of free water at the inlet of refuelling units and filter water
separators.
Measuring the free water content at the outlet of FWS Filter Water Separators.
Measuring the content of free water at the inlet and outlet of filter vessels, especially at the
outlet of Dirt Defence Filters according to JIG bulletin 130.
The manufacturer is not liable for damage caused by improper or non-designated use.
1.2 Installation, Commissioning and Operation
Please note:
Installation, electrical connection, commissioning, operation and maintenance of the
measuring system must only be carried out by trained technical personnel.
The technical personnel must be authorised for the specified activities by the system
operator.
Technical personnel must have read and understood these Operating Instructions and must
adhere to them.
Before commissioning the entire measuring point, check that all connections are correct.
Ensure that electrical cables and hose connections are not damaged.
Do not operate damaged products and secure them against unintentional commissioning.
Mark any damaged product as being defective.
Measuring point faults may only be rectified by authorised and specially trained personnel.
If faults cannot be rectified, products must be taken out of service and secured against
unintentional commissioning.
Repairs not described in these Operating Instructions may only be carried out at the
manufacturer or by a designated service organisation.
1.3 Operational safety
The sensor has been designed and tested according to the highest standards and it left the
factory in perfect functioning order.
Relevant regulations and European standards have been met.
As the user, you are responsible for complying with the following safety conditions:
Installation instructions
Local prevailing standards and regulations
1.4 Return
If the device requires repair, please send it in cleaned condition to the appropriate sales
centre. Please use the original packaging.
Please enclose the completed "Declaration of Decontamination" (available for download on
our homepage) with the packaging and in addition, the shipping documents.
No repair is possible without the completed "Declaration of Decontamination"!
For optimized shipment, please contact FAUDI-Aviation Shipping department ahead of
shipment, e.g. to get a proforma invoice.

Version 2.6
Operating instructions
AFGUARD®
Zone 0 and Zone 1
Page: 6
of: 41
FAUDI Aviation GmbH, Scharnhorststraße 7 B, D-35260 Stadtallendorf
BA_AFGUARD_Ex_rev2.6_Englisch_l
ogo
1.5 Degree of protection (IP-Code)
For safety reasons, connectors must be protected from outside influences like dust,
foreign objects, direct contact, and heavy rain. This protection is provided on industrial
connectors by their housings with their latching devices and sealed cable entries.
To ensure IP67 protection, AFGUARD must always be connected to the dedicated cable with
its proper cable connector. Without connection, IP67 protection cannot be guaranteed!
High pressure cleaners (such as Kärcher) that use high pressure and/or
high temperatures must not be used on the sensor.This can cause harmful
effects and the sensor can react with a failure signal or can be destroyed.
Notes on safety icons and symbols
Warning!
This symbol alerts you to possible faults which can end in explosion. They
can cause serious damage to the instrument or to persons if ignored.
Warning!
This symbol alerts you to hazards. They can cause serious damage to the
instrument or to persons if ignored.
Caution!
This symbol alerts you to possible faults which could arise from incorrect
operation. They could cause damage to the instrument if ignored.
Note!
This symbol indicates important items of information.

Version 2.6
Operating instructions
AFGUARD®
Zone 0 and Zone 1
Page: 7
of: 41
FAUDI Aviation GmbH, Scharnhorststraße 7 B, D-35260 Stadtallendorf
BA_AFGUARD_Ex_rev2.6_Englisch_l
ogo
2 Identification
2.1 Product structure
The AFGUARD®is marked with the following, permanently identification markings.
At the head of the Sensor, you will find the engraved name AFGUARD®and serial No. –see
attached picture.
The Series No. is the distinctive feature that distinguishes the AFGUARD®from one other. It
is born according the following attributes:
Engraved Serial No.: AFGX/XXXXX/a
Year of construction
Serial number
(5 digits)
0 = Ex-Version zone 0/1
Name
Brand name
AFGUARD®-SENSOR
Serial No.
AFG0/00001/a

Version 2.6
Operating instructions
AFGUARD®
Zone 0 and Zone 1
Page: 8
of: 41
FAUDI Aviation GmbH, Scharnhorststraße 7 B, D-35260 Stadtallendorf
BA_AFGUARD_Ex_rev2.6_Englisch_l
ogo
In addition to the markings of name and serial No., there is an engraved nameplate on the
housing of the AFGUARD®with additional information:
Picture: Nameplate of a Hazardous Area approved Version of the AFGUARD® for
hazardous Area Zone 0/1
2.1.1 Nameplate
It is prohibited to commission the equipment if the nameplate is no longer legible or is
completely missing.
Take organizational measures to ensure:
That the nameplate and possible affixed prohibition, or instruction labels on the equipment
are kept legible!
If the nameplate is painted on or destroyed, the sensor is damaged and may no longer
be used.
Solution: Remove the paint or buy a new sensor!
Make sure the sensor is not damaged by using chemical products when removing the paint.

Version 2.6
Operating instructions
AFGUARD®
Zone 0 and Zone 1
Page: 9
of: 41
FAUDI Aviation GmbH, Scharnhorststraße 7 B, D-35260 Stadtallendorf
BA_AFGUARD_Ex_rev2.6_Englisch_l
ogo
2.2 Scope of delivery
The following items are included in the delivery:
Transport case –Hard-Top Case with foam
AFGUARD®with protective screw pipe to protect the mirror and optical path of the sensor
Set of accessories with the following content:
o2 mm and 1.5 mm sealings,
oAluminium and SS thread,
oBlue 15 m cable with Sensor plug connector,
oOperating Instructions –underneath the foam cover
oCalibration protocol
If you have any questions, please ask your local supplier or distributor.

Version 2.6
Operating instructions
AFGUARD®
Zone 0 and Zone 1
Page: 10
of: 41
FAUDI Aviation GmbH, Scharnhorststraße 7 B, D-35260 Stadtallendorf
BA_AFGUARD_Ex_rev2.6_Englisch_l
ogo
3 Installation and dismantling
3.1 Incoming acceptance, transport, and storage
You should have received a delivery as shown in the picture below.
Make sure the packaging is undamaged!
Inform the supplier about any damage to the packaging.
Keep the damaged packaging until the matter has been settled.
Make sure the contents are undamaged!
Inform the supplier about any damage to the delivery contents. Keep all damaged products
until the matter has been settled.
Check that the scope of delivery is complete and agrees with your order and the shipping.
The packaging material used to store or to transport the product must provide shock
protection and humidity protection. The original packaging offers the best protection. Also,
keep to the approved ambient conditions (see "Technical data").
If you have any questions, please contact your supplier or your assigned sales centre.

Version 2.6
Operating instructions
AFGUARD®
Zone 0 and Zone 1
Page: 11
of: 41
FAUDI Aviation GmbH, Scharnhorststraße 7 B, D-35260 Stadtallendorf
BA_AFGUARD_Ex_rev2.6_Englisch_l
ogo
3.2 Installation conditions
3.2.1 Dimensions
3.2.2 Mounting Position
The AFGUARD®must be mounted horizontally. Also check the drawing on page 13. Do
not mount the AFGUARD®upside down. Make sure that there is enough space inside the
pipe to prevent contact between
the rear wall and the mirror
during assembly –space for
proper installation.

Version 2.6
Operating instructions
AFGUARD®
Zone 0 and Zone 1
Page: 12
of: 41
FAUDI Aviation GmbH, Scharnhorststraße 7 B, D-35260 Stadtallendorf
BA_AFGUARD_Ex_rev2.6_Englisch_l
ogo
Do not touch the optics or mirror to avoid damaging it.
3.3 Thread for AFGUARD®installation
The AFGUARD®uses special threads to be weld into the pipe section. Threads are available
in Stainless steel and Aluminium.
Ensure to only use FAUDI-Aviation threads as they have been specially designed for that
purpose. Standard threads do not work with the AFGUARD®.
Welding instructions are part of each socket delivery.
3.3.1 Installation location
Select the installation location so that there is easy access for future checks and service
work.
Make sure that the AFGUARD®and related assemblies are secured safely and vibration-
free. FAUDI Aviation would be happy to provide a good, picturized guideline on how to select
a proper place for the installation of the AFGUARD®. Installation itself should be carried out
by trained technicians, most probably by Trained Installers or Certified Installers.

Version 2.6
Operating instructions
AFGUARD®
Zone 0 and Zone 1
Page: 13
of: 41
FAUDI Aviation GmbH, Scharnhorststraße 7 B, D-35260 Stadtallendorf
BA_AFGUARD_Ex_rev2.6_Englisch_l
ogo
Procedure for proper AFGUARD®installation
Step 1:
Select the best place for installation in the effluent pipe section.
Have a look on the assembly area:

Version 2.6
Operating instructions
AFGUARD®
Zone 0 and Zone 1
Page: 14
of: 41
FAUDI Aviation GmbH, Scharnhorststraße 7 B, D-35260 Stadtallendorf
BA_AFGUARD_Ex_rev2.6_Englisch_l
ogo
Step 2:
Drain the pipe section.
Step 3:
Disconnect the pipe section from the vessel and clean the pipe section from flammable fluids.
Step 4:
Drill the hole for the AFGUARD® socket.
Drilling tools:
HSS 45mm cylindrical saw for a hand drill
AFGUARD® stainless steel socket
FAUDI article number: 600355
HSS 54mm cylindrical saw a hand drill
AFGUARD® aluminum socket
FAUDI article number: 600356
Please pay close attention to the welding instructions.

Version 2.6
Operating instructions
AFGUARD®
Zone 0 and Zone 1
Page: 15
of: 41
FAUDI Aviation GmbH, Scharnhorststraße 7 B, D-35260 Stadtallendorf
BA_AFGUARD_Ex_rev2.6_Englisch_l
ogo
Step 5:
Weld the special AFGUARD® socket into the pipe section.
Step 6:
After welding, it is recommended to thread the socket with a G3/4”-thread cutter.
Step 7:
Proceed a pressure test to ensure the required PN rating of the pipe section.
Step 8:
Reassemble the pipe section (ensure to use good working seals).

Version 2.6
Operating instructions
AFGUARD®
Zone 0 and Zone 1
Page: 16
of: 41
FAUDI Aviation GmbH, Scharnhorststraße 7 B, D-35260 Stadtallendorf
BA_AFGUARD_Ex_rev2.6_Englisch_l
ogo
Step 9:
Install the AFGUARD® in the socket with one of the provided special KLINGERSIL-sealings. Start with
the 2 mm one and check the AFGUARD orientation in the pipe section. If not adequate –replace it
with the 1.5mm one.
Use the special AFGUARD® torque spanner to achieve the recommended torque of 50Nm.
Step 10: AFGUARD spanner - FAUDI article no 600513
Connect the AFGUARD® to the control system of the truck / tank farm by using the blue two wire
cable.
For hazardous area use, please ensure to only use the AFGUARD® together with a suitable barrier
with power supply.

Version 2.6
Operating instructions
AFGUARD®
Zone 0 and Zone 1
Page: 17
of: 41
FAUDI Aviation GmbH, Scharnhorststraße 7 B, D-35260 Stadtallendorf
BA_AFGUARD_Ex_rev2.6_Englisch_l
ogo
3.3.2 AFGUARD orientation in the pipe section
AFGUARD®is capable of detecting different droplet size distributions. Especially for bigger
droplets, AFGUARD®orientation in the pipe section is of major importance.
Therefore, we recommend installing the AFGUARD according the following image:
Orientation of AFGUARD®could be achieved using one of the supplied sealings. Start with
the 2 mm sealing to get an idea about the AFGUARD orientation (using the AFGUARD®
spanner). If insufficient, replace with the 1.5 mm sealing.
3.3.3 Measuring system
➢A complete measuring system comprises at least:
➢The AFGUARD®sensor
➢Sealing (select the 1,5 mm or the 2 mm seal which is provided together with the
AFGUARD)
➢Two-wire cable connection with plug connector. Only the cable delivered together with
the AFGUARD® should be used.
➢Isolating converter with transmitter supply.
E
3.3.3.1 Isolating converter with transmitter supply for signal output 4 to 20 mA (inherent safe)
Manufacturer
Type
Rating. EGB for Explosion group „IIB“
Uo
Io
Po
Co
Lo
Endress +
Hauser
RMA42
27,3 V
96,5 mA
659 mW
352 nF
100 mH
RN221N
(PTB 00 ATEX 2018)
27,3 V
87, 6 mA
597 mW
683 nF
18,9 mH
Phoenix
Contact
MACX MCR-EX-SL-RPSS-I
25,2 V
93 mA
587 mW
820 nF
4 mH
FAUDI Aviation highly recommends the use of isolating converters with transmitter supply.
Especially for use in hazardous areas, the use of inherent safe isolating converters is
mandatory. Protection class can be "ia" or "ib".
E

Version 2.6
Operating instructions
AFGUARD®
Zone 0 and Zone 1
Page: 18
of: 41
FAUDI Aviation GmbH, Scharnhorststraße 7 B, D-35260 Stadtallendorf
BA_AFGUARD_Ex_rev2.6_Englisch_l
ogo
3.3.3.2 Proof of intrinsic safety for the interconnection of simple electrical circuitry Ex i
When using AFGUARD®in combination with an isolating converter with transmitter supply
(sometimes together with other equipment like displays), it is evident to make sure that such
equipment may be used together. This should be done before installation. If you are not sure
on how to proceed, please contact FAUDI Aviation GmbH.
Example: Combination of AFGUARD (Ex ia IIB) together with RN 221N (E+H)
Intrinsic safe AFGUARD
Proof of intrinsic
safety
Isolating converter with
power suply
AFGUARD Zone 0/1
Ex ia IIB
RN221N (E+H)
Ex ia IIB
Data
Data
Remarks
Ui
30 V
≥
U0
27,3
V
comply
Ii
100 mA
≥
I0
87,6
mA
comply
Pi
750 mW
≥
P0
597
mW
comply
Li+Lc
≤
L0
18,9
mH
Linegligible
Ci+Cc
≤
C0
683
nF
Cinegligible
cable data according to EN 60079-14, 12.2.2.2
LC
1
µH/m
results in
18900
m
length of cable
CC
200
pF/m
results in
3415
m
length of cable
Use the result with shorter cable length
max. cable length
3415
m
acc. EN 60079-14
The calculation delivers the maximum length of cable (please use specific cable data) to be
used for the specific combination of AFGUARD, optional Display, and isolating converter with
power supply.
3.3.4 Installing a measuring point
The AFGUARD®is an optical working measuring device that is designed for use in field
applications under rough conditions. Regarding these circumstances, some minimum
directives must be considered:
The optical path of the AFGUARD®(Glass rod, Mirror) is specially adjusted to the application.
Avoid direct contact with hard or sharp edges. Do not touch with unprotected hands.
During installation of the AFGUARD®, be careful when applying force.
The recommended fastening force is 50 Nm –the AFGUARD spanner should be used.
Handle the connection cable with care. Do not lay the cable under stress. Try to avoid sharp
angles.
Protect the cable against "getting caught".
Please take care of possible electrostatic charges on the outer surface of the cable. The
cable may only be cleaned by using a damp cloth.

Version 2.6
Operating instructions
AFGUARD®
Zone 0 and Zone 1
Page: 19
of: 41
FAUDI Aviation GmbH, Scharnhorststraße 7 B, D-35260 Stadtallendorf
BA_AFGUARD_Ex_rev2.6_Englisch_l
ogo
3.4 Installation examples
Try to only touch the AFGUARD®on the housing when taking it out of the box.
Remove the protection device from the optics.
Put the sealing over the thread in front of the Sensor. Only use one seal –the 1.5 mm or the
2 mm seal, which were delivered together with the AFGUARD®. Do not use other sealing
than the ones recommended by FAUDI Aviation GmbH.
Screw the sensor into the fitting.
Manually secure it and apply the recommended torque setting of approx. 50 Nm.
Check the sealing.
Adjust the cable. Make sure no stress is applied to the cable.
3.5 Check of Correct Assembly
Check the mounting position.
Check the recommended torque setting of 50 Nm by using of the AFGUARD®spanner.
Check against any leakages. Make sure the AFGUARD® sensor is correctly positioned.
Check the signal cable. Try to position it in a way as to prevent water from going straight to
the plug. The direction of the cable should be downwards or horizontal.
Avoid applying any stress to the cable.
3.6 Dismantling
The dismantling of the Sensor is made by reversing the steps used to install the
AFGUARD®.
Make sure that the power is off and the pipe work is free of pressure and empty (medium
free).
Remove the sensor plug connection.
Screw the Sensor out.
Remove the sealing,
Screw in a blind plug instead of the Sensor (do not forget the sealing).
Clean the Sensor and check it carefully.
To send the Sensor back for service purposes, please fill out the declaration of
decontamination (chapter 12), which is available for download on our Homepage.
Use the original transport box for storage and/or transport.
E
FAUDI Aviation highly recommends the use of isolating converters with transmitter
supply. Especially for use in hazardous areas, the use of inherent safe isolating
converters is mandatory. Protection classes "ia" or "ib" are allowed.
Connect the cable to the responding connecting terminals using one of the recommended
isolating converters with transmitter supply.
Finally, connect the plug with the responding plug socket at the rear end of the AFGUARD®

Version 2.6
Operating instructions
AFGUARD®
Zone 0 and Zone 1
Page: 20
of: 41
FAUDI Aviation GmbH, Scharnhorststraße 7 B, D-35260 Stadtallendorf
BA_AFGUARD_Ex_rev2.6_Englisch_l
ogo
4 Cabling
WARNING!
The electrical connection must only be carried out by authorised technical personnel.
Technical personnel must have read and understood the instructions in this manual and
must adhere to them.
Ensure that there is no voltage at the power cable before beginning connection.
Colour of cable
Function
blue
Signal output
brown
Power supply
4.1 Direct connection to isolated converter with power supply
The power circuit parameters should comply with:
Supply and signal circuit intended for connection to an intrinsically safe 4 to 20 mA current
loop
Voltage UiDC 30 V
Current Ii100 mA
Power Pi750 mW
Effective internal capacitance Cinegligible
Effective internal inductance Linegligible
Make sure to follow the manufacturer’s instructions of the operating manual that will be
provided with your isolating converter with power supply. For hazardous areas, make sure to
use correct intrinsically safe power supply.
E
It is only permitted to use the cable specified by FAUDI Aviation GmbH.
For direct connection between the AFGUARD®and the recommended isolated converter
with transmitter supply, FAUDI Aviation delivers 15 m of two-wired cable with isolated plug
adapter M12*1. The cable can only be shortened by authorized technical personnel.
The following connection is recommended:
E
It is only allowed to clean the cable using a damp cloth to prevent electrostatic charges.
E
The AFGUARD®must be connected via specified sensor cable with plug adaptor with the
terminal clamps of an inherent safety isolated converter with power supply.
The marking "II 1/2G Ex ib [ia] IIB T4" applies to the transmitter in case of being supplied
by means of an IS 2-wire supply, and signal circuit providing level of protection "Ex ib IIB."
The marking "II 1/2G Ex ia IIB T4" applies to the transmitter in case of being supplied by
means of an IS 2-wire supply, and signal circuit providing level of protection "Ex ia IIB."