Special Safety Instruction
308030EN, Edition 2
April 2013
Special Safety Instruction
Tank Gauging System
ATEX version
www.rosemount-tg.com
Special Safety Instruction
308030EN, Edition 2
April 2013
Rosemount TankRadar REX
Table of Contents
Contents
SPECIAL SAFETY INSTRUCTION . . . . . . . . . . . . . . . . . . . . . . TOC-II
1. GENERAL REQUIREMENTS . . . . . . . . . . . . . . . . . . . . . . . 1-1
1.1 SAFETY INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1.2 FLAMEPROOF/EXPLOSIONPROOF ENCLOSURES . . . . . . . . . . . . .1-2
1.3 NON-RECOGNIZED SPARE PARTS . . . . . . . . . . . . . . . . . . . . . . . . . .1-2
2. EXPLOSION PROTECTION TECHNIQUES . . . . . . . . . . . . . . 2-1
2.1 INTRINSIC SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2.2 FLAMEPROOF/EXPLOSION PROOF . . . . . . . . . . . . . . . . . . . . . . . . .2-2
2.3 INCREASED SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
2.4 EUROPEAN ATEX DIRECTIVE INFORMATION . . . . . . . . . . . . . . . . . 2-3
2.4.1 Radar Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3
2.4.2 Radar Tank Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
2.4.3 Transmitter Interface Card (TIC) . . . . . . . . . . . . . . . . . . . .2-5
2.4.4 Temperature Multiplexer Card (TMC) . . . . . . . . . . . . . . . .2-6
2.4.5 FF Adaptor Card (FFA) . . . . . . . . . . . . . . . . . . . . . . . . . . .2-7
2.4.6 Data Acquisition Unit (DAU) . . . . . . . . . . . . . . . . . . . . . . .2-8
2.4.7 Remote Display Unit 40 (RDU 40) . . . . . . . . . . . . . . . . . .2-9
3. SAFE CONNECTION OF TANKRADAR REX . . . . . . . . . . . . 3-1
3.1 CABLING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1
3.2 INTEGRATED JUNCTION BOX, JBI . . . . . . . . . . . . . . . . . . . . . . . . . .3-1
3.3 CUSTOMER SUPPLIED JUNCTION BOX . . . . . . . . . . . . . . . . . . . . . .3-1
3.4 GROUNDING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2
TOC-i
Rosemount TankRadar REX
Table of Contents
SPECIAL SAFETY INSTRUCTION
This document lists specific requirements which have to be fulfilled to
secure a safe installation and use of Rosemount TankRadar REX in
hazardous area.
Omission may jeopardize safety, and Rosemount Tank Radar AB will not
take any responsibility if requirements as listed below are not fulfilled.
Special Safety Instruction
308030EN, Edition 2
April 2013
TOC-ii
Special Safety Instruction
308030EN, Edition 2
April 2013
1. General Requirements
1.1 Safety Instructions
• The REX 3900 gauge must be installed by suitably trained personnel according to the accompanied instructions and in accordance
with the applicable code of practice.
• An “X” suffix on the approval number (e.g. Baseefa
03ATEX0071X) indicates that special conditions for safe use
apply.
• Make sure that the connected power supply is in accordance with
the marking on the REX 3900 gauge.
• Select external fuse rating with respect to area temperature classification (T1-T6) and maximum expected ambient temperature to
prevent overheating of the W11 wiring (0.5 mm2), see Figure 3-1.
Example: maximum allowed (fault) current in a T4 installation with
70°C ambient is 7.5 A according to the lead seal compartment certificate PTB 97 ATEX 1047 U.
Rosemount Tank Radar REX
Chapter 1 General Requirements
1-1
Special Safety Instruction
Rosemount Tank Radar REX
Chapter 1 General Requirements
1.2 Flameproof/Explosionproof Enclosures
Flameproof/Explosionproof enclosures of Radar Tank Gauges (RTG)
may not be opened while energized.
Rosemount Tank Radar AB will not take any responsibility for local
regulations defining conditions when flame proof enclosures are allowed
to be opened while energized.
308030EN, Edition 2
April 2013
Flameproof enclosure
RTG3930_Flameproof.eps
Figure 1-1. Radar Tank Gauge with flameproof enclosure.
1.3 Non-Recognized Spare Parts
Any substitution of non-recognized spare parts may jeopardize safety.
Rosemount Tank Radar AB will not take any responsibility for faults,
accidents, etc. caused by non-recognized spare parts.
Recognized spare parts shall have or be packed with label with
Rosemount Tank Radar AB name and identification number.
1-2
Special Safety Instruction
308030EN, Edition 2
April 2013
Chapter 2 Explosion Protection Techniques
Rosemount Tank Radar REX
2. Explosion Protection Techniques
TankRadar REX equipment is often used in areas where flammable
materials are handled and where an explosive gas atmosphere may be
present, so called hazardous areas. To protect the environment and the
personnel, precautions must be taken to ensure that this atmosphere
cannot be ignited. Consequently, equipment within hazardous areas
must be explosion protected.
A number of different explosion protection techniques have been
developed over the years. Intrinsic Safety, Flameproof/Explosionproof
enclosures and Increased Safety are different techniques.
The basic principles of explosion protection are:
• Flammable materials are grouped according to the energy needed
to ignite them.
• Equipment located in hazardous areas are classified according to
the maximum surface temperature that it can produce and this
must be safe with the flammable gases that may be present.
• Hazardous areas are classified according to the probability that an
explosive atmosphere is present, and this dictates whether or not
a particular explosion protection technique may be used.
2.1 Intrinsic Safety
Intrinsic safety, IS, is based on the principle of restricting electrical
energy available in hazardous-area circuits such that any sparks or hot
surfaces, that may occur as a result of electrical faults in components,
are unable to cause ignition. Intrinsic safety is the only technique
accepted for Zone 0 hazardous areas. For example, temperature
measurement with the DAU is intrinsically safe.
Note! Special care and skills is necessary for troubleshooting in Intrinsically
Safe circuits.
Instruments for troubleshooting in Intrinsically Safe circuits must be
approved for the intended use.
2-1
Special Safety Instruction
Rosemount Tank Radar REX
Chapter 2 Explosion Protection Techniques
308030EN, Edition 2
April 2013
2.2 Flameproof/Explosion Proof
Flameproof/Explosion proof enclosures can be used when an explosion
is allowed inside the enclosure as long as it does not spread to the
outside. The enclosure must be strong enough to withstand the pressure
and must have narrow gaps to allow the pressure to escape without
igniting the atmosphere outside the equipment.
Note! The flameproof/explosionproof enclosure must not be opened while the
unit is powered or when an explosive gas atmosphere is present.
Damaged enclosures must be taken out of service.
All cover fastening screws must be present and firmly tightened.
2.3 Increased Safety
This type of protection is intended for products in which arcs and sparks
do not occur in normal service nor under fault conditions, and in which
excessive surface temperatures are prevented. Increased Safety is
achieved by enhancing insulation values and creepage and clearance
distances above those required for normal service, thus providing a
safety factor against accidental breakdown. Electrical connections are
carried out in such a way that self-loosening is not possible.
2-2
Special Safety Instruction
308030EN, Edition 2
April 2013
Chapter 2 Explosion Protection Techniques
2.4 European ATEX Directive Information
2.4.1 Radar Unit
The REX Radar Unit has been certified to comply with Directive 94/9/EC
of the European Parliament and the Council as published in the Official
Journal of the European Communities No. L 100/1.
Figure 2-1. Certification label ATEX for the 2015 Radar Unit (used in
3900 series radar tank gauges).
Rosemount Tank Radar REX
The following information is provided as part of the label of the radar unit:
• Name and address of the manufacturer
(Rosemount Tank Radar AB).
• CE Conformity Marking
• Complete model number
• The serial number of the device
• Year of construction
• Marking for explosion protection:
• Ex d IIB Gb T6 (-40 °C Ta +70 °C)
• Baseefa(2001) ATEX certificate number: Baseefa03ATEX0071X
Special Conditions for Safe Use (X):
• The Type TH2015-2019 Radar Units are not to be mounted
directly on to a tank.
• For replacement purposes the cover fastening screws are to be of
minimum grade A4-80 stainless steel.
• The permanently attached cables are to be suitably terminated
and protected against impact.
2-3
Rosemount Tank Radar REX
Chapter 2 Explosion Protection Techniques
2.4.2 Radar Tank Gauge
The 3900 Radar Tank Gauge (type TH2015-2019 Radar Unit with
antenna certified for Zone 0) has been certified to comply with Directive
94/9/EC of the European Parliament and the Council as published in the
Official Journal of the European Communities No. L 100/1.
The 3900 series of Radar Tank Gauges is intended to be mounted
directly on tank.
Figure 2-2. Certification label ATEX for the 3900 Series Radar Tank
Gauge.
Special Safety Instruction
308030EN, Edition 2
April 2013
The following information is provided as part of the label of the radar tank
gauge:
• Name and address of the manufacturer
(Rosemount Tank Radar AB).
• CE Conformity Marking
• Complete model number
• The serial number of the device
• Year of construction
• Marking for explosion protection:
• Ex d IIB Ga/Gb T6 (-40 °C Ta +70 °C)
• Baseefa(2001) ATEX certificate number: Baseefa03ATEX0071X
Special Conditions for Safe Use (X):
• For replacement purposes the cover fastening screws are to be of
minimum grade A4-80 stainless steel.
2-4
• The permanently attached cables are to be suitably terminated
and protected against impact.
Special Safety Instruction
308030EN, Edition 2
April 2013
2.4.3 Transmitter Interface Card (TIC)
Figure 2-3. Certification label for the Transmitter Interface Card (TIC).
The Transmitter Interface Card (TIC) is mounted within the flameproof
enclosure. It is required for intrinsically safe inputs such as 4-20 mA
current loops and local display unit.
The following information is provided as part of the label of the TIC:
Rosemount Tank Radar REX
Chapter 2 Explosion Protection Techniques
• Name and address of the manufacturer
(Rosemount Tank Radar AB)
• CE Conformity Marking:
• Year of construction
• Marking for explosion protection:
• [Ex ia] IIC (Ga) (-40 °C Ta +85 °C)
• Baseefa(2001) ATEX EC-Type Examination Certificate number:
Baseefa03ATEX0050U
Schedule of Limitations
• The Transmitter Interface Card must be housed within an enclosure which provides a degree of protection of at least IP20.
• The 0V connections must be interconnected and connected to an
I.S. earth point in accordance with EN60079-14 12.2.4., when the
component is installed within an assembly.
• The arrangements for the connections to non-hazardous area and
hazardous area external circuits must comply with the requirements of Clause 6.3 of EN 50020:2002.
Note! For electrical (I.S.) parameters refer to the appended EC-Type
Examination Certificate Baseefa03ATEX0050U.
2-5
Rosemount Tank Radar REX
Chapter 2 Explosion Protection Techniques
2.4.4 Temperature Multiplexer Card (TMC)
Figure 2-4. Certification label for the Temperature Multiplexer Card
(TMC).
The Temperature Multiplexer Card (TMC) is mounted within the
flameproof enclosure. It is used for connecting up to 6 temperature
sensors to the REX 3900 gauge.
The following information is provided as part of the label of the TMC:
Special Safety Instruction
308030EN, Edition 2
April 2013
• Name and address of the manufacturer
(Rosemount Tank Radar AB)
• CE Conformity Marking:
• Year of construction
• Marking for explosion protection:
• [Ex ia] IIC (Ga) (-40 °C Ta +85 °C)
• Baseefa(2001) ATEX EC-Type Examination number:
Baseefa03ATEX0050U
Schedule of Limitations
• The Temperature Multiplexer Card must be housed within an
enclosure which provides a degree of protection of at least IP20.
• The 0V connections must be interconnected and connected to an
I.S. earth point in accordance with EN60079-14 12.2.4., when the
component is installed within an assembly.
• The arrangements for the connections to non-hazardous area and
hazardous area external circuits must comply with the requirements of Clause 6.3 of EN 50020:2002.
Note! For electrical (I.S.) parameters refer to the appended EC-Type
Examination Certificate Baseefa03ATEX0050U.
2-6
Special Safety Instruction
308030EN, Edition 2
April 2013
2.4.5 FF Adaptor Card (FFA)
Figure 2-5. Certification label for the FF Adaptor Card (FFA).
The FF Adaptor card (FFA) is mounted within the flameproof enclosure.
It is, in conjunction with a Fieldbus Communication Board
(BAS01ATEX1385U), used to interface to an intrinsically safe Fieldbus.
The following information is provided as part of the label of the FFA:
Rosemount Tank Radar REX
Chapter 2 Explosion Protection Techniques
• Name and address of the manufacturer
(Rosemount Tank Radar AB)
• CE Conformity Marking:
• Year of construction
• Marking for explosion protection:
• [Ex ia] IIC (Ga) (-40 °C Ta +85 °C)
• Baseefa(2001) ATEX EC-Type Examination Certificate number:
Baseefa04ATEX0119U
Schedule of Limitations
• The FF Adaptor Card must be housed within an enclosure which
provides a degree of protection of at least IP20. If the FF Adaptor
Card is mounted within a hazardous area it must be installed
within an appropriately certified flameproof enclosure.
• The arrangements for the connections to non-hazardous area and
hazardous area external circuits must comply with the requirements of Clause 6.3 of EN 50020:2002.
• The FF Adaptor Card is considered to be suitable for use within
EEx d apparatus with an Ambient Temperature range of
(-40 °C Ta +85 °C).
Note! For electrical (I.S.) parameters refer to the appended EC-Type
Examination Certificate Baseefa04ATEX0119U.
2-7
Rosemount Tank Radar REX
Chapter 2 Explosion Protection Techniques
2.4.6 Data Acquisition Unit (DAU)
Figure 2-6. Certification label ATEX for the Data Acquisition Unit.
Special Safety Instruction
308030EN, Edition 2
April 2013
The following information is provided as part of the label of the Data
Acquisition Unit (DAU):
• Name and address of the manufacturer
(Rosemount Tank Radar AB)
• CE Conformity Marking
• Complete model number
• The serial number of the device
• Year of construction
• Marking for explosion protection:
• Ex ia IIB T4 Ga (-40 °C Ta +65 °C)
X20 Pin 6 w.r.t Pin 7 X20 Pin 5 w.r.t Pin 7 X21 (For connection of up to 14 RTDs)
Ui=14 V
Ii=334 mA
Pi=1.17 W
Li=Ci=0
Ui=6 V
Ii=60 mA
Pi=0.08 W
Li=Ci=0
U0=6 V
I0=394 mA
P0=1.25 W
Ui=1.2 V
Ii=10 mA
Pi=0.02 W
Li=0
Ci=13.5 F
2-8
• Baseefa(2001) ATEX EC-Type Examination Certificate number:
Baseefa03ATEX0044
Special Safety Instruction
308030EN, Edition 2
April 2013
2.4.7 Remote Display Unit 40 (RDU 40)
Figure 2-7. Approval label for the Remote Display Unit RDU40.
The following information is provided as part of the label of the Remote
Display Unit 40 (RDU 40):
• Name and address of the manufacturer
(Rosemount Tank Radar AB).
• CE Conformity Marking:
Rosemount Tank Radar REX
Chapter 2 Explosion Protection Techniques
• Year of construction
• Marking for explosion protection:
• Ex ib IIC T4 Gb (-40 °C Ta +70 °C)
• Sira ATEX certificate number: Sira 00 ATEX 2062
The following instructions apply to equipment covered by certificate
number Sira 00ATEX2062:
1 The equipment may be used with flammable gases and vapours
with apparatus groups IIC, IIB and IIA and with temperature
classes T1, T2, T3 and T4.
2 The equipment is only certified for use in ambient temperatures in
the range -40 °C to +70 °C and should not be used outside this
range.
3 Installation shall be carried out in accordance with the applicable
code of practice.
4 Repair of this equipment shall be carried out in accordance with
the applicable code of practice.
5 Certification marking as detailed in drawing number 9150 074-
980.
2-9
Rosemount Tank Radar REX
Chapter 2 Explosion Protection Techniques
Special Safety Instruction
308030EN, Edition 2
April 2013
2-10
Special Safety Instruction
308030EN, Edition 2
April 2013
Chapter 3 Safe Connection of TankRadar REX
Rosemount Tank Radar REX
3. Safe Connection of TankRadar REX
3.1 Cabling
The permanently attached cables are to be suitably terminated and
protected against impact. On the REX gauge this must be applied for
cable outputs W11 and W12.
W11W12
Non-intrinsically SafeIntrinsically Safe
Cabling.eps
Figure 3-1. Enclosure with output W11 and W12.
3.2 Integrated Junction Box, JBi
Note! The cover of the Integrated Junction Box may not be opened while
energized.
The intrinsically safe wiring to the internal TIC/TMC Board at output W12,
must be adequately segregated from the nonintrinsically safe wiring to
output W11.
3.3 Customer Supplied Junction Box
Customer supplied junction box, used for connection of output W11 to
customers field cabling, must be certified for use in hazardous area.
Leads from Radar Tank Gauge to junction box must be protected
according to national code of practice.
The intrinsically safe wiring to the internal TIC/TMC Board at output W12,
must be adequately segregated from the nonintrinsically safe wiring to
output W11.
3-1
Rosemount Tank Radar REX
Chapter 3 Safe Connection of TankRadar REX
3.4 Grounding
The housing must be grounded according to national code of practice.
Normally this means that the grounding lug on the flameproof enclosure
is connected to a potential equalizing network, normally the tank shell.
Special Safety Instruction
308030EN, Edition 2
April 2013
TH3900_GroundLug.eps
Figure 3-2. Grounding lug.
If the enclosure is connected to a tank structure without a potential
equalizing network, the protective ground with the power supply must not
be connected.
3-2
Special Safety Instruction
308030EN, Edition 2
April 2013
Rosemount Tank Gauging local representative:
Emerson Process Management
Rosemount Tank Gauging
Box 130 45
SE-402 51 Göteborg
SWEDEN
Tel (International): +46 31 337 00 00
Fax (International): +46 31 25 30 22
E-mail: sales.srt@emersonprocess.com
www.rosemount-tg.com
Copyright © Rosemount Tank Radar AB.
Ref. no: 308030EN, Edition 2. April 2013.
Loading...