Installation of Explosion Protected Type Transmitters. Kobold Pad, PAD-...N

PAD

3.10 Installation of Explosion Protected Type Transmitters

3.10.1 ATEX Approval Explosion Proof

ATEX Certification number: KEMA 10ATEX0141 X Issue Number: 2

CE 0158 II 2 G

Note 1. Model PAD for potentially explosive atmosphere

Ex d IIC T6...T4 Gb

Operating Temperature: -20 ℃ ≤ T amb

 +60  C

T6 for process ≤ 85  C;

T5 for process ≤ 100  C;

T4 for process ≤ 130  C

Note 2. Electrical Data

Supply Voltage: 11.9…42 V

DC

Output Signal: 4 to 20 mA + HART

Note 3. Electrical Connection: see ordering table

Note 4. PAD ATEX Certification is according to the below standards

EN 60079-0:2012 + A11

EN 60079-1:2007

Note 5. Installation

 All wiring shall comply with local installation requirement.

 The cable glands and blanking elements shall be of a certified flameproof type, suitable for the condition of use and correctly installed. Also, those devices should be endured at the 130  C.

 Housing Ground must be followed to “local electrical codes”. The most efficient ground procedure is to connect directly to the earth as least impedance.

 How to Ground the Housing:

* Internal Ground Connection: Open rear cover on transmitter, there is a bolt for ground with a grounding mark

* External Ground Assembly: On the left side of transmitter, there is a bolt for ground with a grounding mark (for grounding use a cable lug)

* Housing rotation hexa screw bolt shall be screwed tightly in order to hold the position of transmitter

 When use tubing, stopping boxes must be connected with the wall of housing directly.

 Tubing is installed a minimum of 5 threads.

 Sensor is to be threaded a minimum of 7 threads and prevented from turning by tightening the housing rotation set screw.

 Do not disassemble flameproof Joints but in an unavoidable case to disassemble it or need the specification of flameproof Joints, contact the manufacturer before doing. page 16 PAD K15/0522 ATEX

PAD

▲ Warning

Ensure the correct wiring of power cable. Do not connect the power cable on

Test +/- connection, as this may result in transmitter defect or mal-function.

Note 6. Operation

 WARNING-DO NOT OPEN WHEN AN EXPLOSIVE ATMOSPHERE MAY BE

PRESENT

 Take care not to generate mechanical spark when access to the instrument and peripheral devices in hazardous location.

Note 7. Maintenance and Repair

 The instrument modification or parts replacement by other than authorized representative of KOBOLD Messring GmbH is prohibited and will void

KEMA/ATEX Explosion-proof / Flame-proof.

PAD K15/0522 ATEX page 17

PAD

3.10.2 ATEX Approval Intrinsic Safe

ATEX Certificate Number : DEKRA 18ATEX0092 X

Equipment or protective systems intended for use in potentially explosive atmospheres

– Directive 2014/34/EU

The marking of the product shall include the following:

II 1 G or 2 G Ex ia llC T5 or T4 Ga or Gb

For T5: -30 to 40 deg C

For T4: -30 to 80 deg C

Electric Safety Parameter (Ui, Ii, Pi, Ci, Li)

● Ui = 30 Vdc

● Ii = 200 mA

● Pi = 0.9 W

● Ci = 27 nF

● Li = 104 uH

Compliance with Essential Health and Safety Requirements assured with:

EN 60079-0:2009

EN 60079-11:2007

EN 60079-26:2007

Safety Instructions: General

 Comply with the installation and safety instructions in the operating instructions.

 Staff must meet the following conditions for mounting, electrical installation, commissioning and maintenance of the device:

Be suitable qualified for their role and the tasks they perform

Be trained in explosion protection

Be familiar with national regulations

 Install the device according to the manufacturer’s instruction and national regulations

 Only use the device in media to which the wetted materials have sufficient durability.

 Avoid electrostatic charging:

Of plastic surface (e.g. housing, sensor element, special varnishing, attached additional plates,...)

Of isolated capacities (e.g. isolated metallic plates)

Safety Instructions: Special Conditions

The non-metallic parts incorporated in the enclosure of this equipment may generate an ignition capable level of electrostatic charge. Therefore, particularly when it is used for application that specifically require Group IIC, EPL Ga equipment, the equipment shall not be installed in a location where the external conditions can result in the build-up of electrostatic charge on such surfaces.

Additionally, the equipment shall only be cleaned with a damp cloth. page 18 PAD K15/0522 ATEX

PAD

Models with enclosures made of aluminium (ASTM B85) are considered to present a potential risk of ignition by impact or friction. Care must be taken during installation and use to prevent impact or friction. Particularly, it must not be used for applications that specifically require EPL Ga equipment.

The insulation between the intrinsically safe circuit and the frame of the equipment is not capable of withstanding a 500 V dielectric strength test as defined in clause 6.3.12 of EN 60079-11:2007. This shall be taken into account during installation.

▲ Warning

 There are two cable entries. User shall select one of them to wire the cable.

 Make sure to use a cable gland at one cable entry with sufficient protection category and suiting the outer cable diameter used. The second cable entry shall be blocked by using a conduit plug or any other parts.

 For hazardous area usage, the choice of cable gland should suit the application and fulfill the corresponding certification requirements & end user’s requirement.

INSTALLATION

◈ Wiring is to be carried out only by qualified staff.

◈ The power supply voltage limits shall not be exceeded.

◈ Maintenance and repair should be isolated by power supply and any pressure.

◈ Wiring methods and length of cable of power supply cable and ground cable

should be considered by proper Ex condition.

◈ Transmitter has the ‘reverse polarity protection diode’ in order to prevent failure

in the field while wiring +, - power supply voltage. However if the wiring is not

performed correctly or wrong terminals on rear terminal board are used for

power supply, the transmitter may malfunction.

PAD K15/0522 ATEX page 19

PAD

◈ Any additional part or accessory connected to transmitter shall have correct

approval certificate to comply with the given Ex/ Non-Ex requirement. Cable

gland, connector, adapter or any other connection used shall have the

appropriate certification/ approval for use with the transmitter

◈ Additional electrical connection parts shall only be plugged by suitable plugs.

◈ Grounding of housing shall follow the “Local Electrical Codes”. For grounding a wire cross section of at least 4 mm 2 is recommended.

◈ Any cable grand must be approved by Ex condition in hazardous area.

◈ Connecting point of any joint (thread) parts should be followed by IEC 60079-1,

5.3 clause.

◈ Housing Grounding

● Internal Ground Connection: Open rear cover on transmitter, the ground bolt

is located inside with grounding mark

● External Ground Assembly: On the left side of transmitter, there is a bolt for

ground with grounding mark (for grounding use a cable lug).

● Housing Rotation hexa screw bolt shall be screwed tightly in order to hold

the position of transmitter.

◇ Compliance for intrinsically safety is ensured only if the intrinsically safe safety

barrier complies with safety parameters as provided in the relevant ATEX

certification

◇ To comply with intrinsic safe system concept, the transmitter is connected with

the safety barrier in a loop (see chapter 5.7. Wiring).

◇ To assure an Intrinsic Safety System, the transmitter and barrier must be

wired in accordance with the barrier manufacturer’s field wiring instructions

and the applicable circuit diagram.

Warning

The entity concept allows interconnection of intrinsic safe apparatus to associated apparatus not specifically examined in combination as a system.

◇ The approved value of open circuit max. voltage Uo, max. short circuit current

Io and max. power Po in associated equipments are should be less than or

equal for max. safe input voltage Uo, max. input current Ii and max. safe

power Pi of the transmitter with Ex ia.

◇ The approved value of max. capacitance Co in associated equipments should

be bigger than total value of capacitance Ci in transmitter with Ex ia + cable

capacitance in associated equipment.

◇ The approved value of max. inductance Lo should be bigger than total value

of inductance Li in transmitter with Ex ia + cable inductance in associated

equipment.

Equip with Ex ia

Ui = 30 VDC

Comparison

≥

Associated Equipment

Uo

Ii = 200 mA

Pi = 0.9 W

Ci = 27 nF

Li = 104 uH

≥

≥

<

<

Io

Po

C

L o o page 20 PAD K15/0522 ATEX