Vega VEGADIS 176 Ex, DIS176.ICSI Safety Instructions

Safety instructions
VEGADIS 176 Ex
(DIS176.ICSI)

IECEx PTB 15.0002 X

Ex ib IIC T6 Gb

0044

Document ID: 50016

Contents

1 Area of applicability ................................................................................................................. 3

2 General information ................................................................................................................. 3

3 Technical data .......................................................................................................................... 3

4 Installation/construction ......................................................................................................... 4

5 Grounding/Potential equalization .......................................................................................... 5

6 Material resistance .................................................................................................................. 5

7 Impact and friction sparks ...................................................................................................... 5

Please note:

These safety instructions are part of the documentation:

47916 - VEGADIS 176

•

49684 - Certicate of Conformity IECEx PTB 15.0002 X

•

2

50016-EN-150325

VEGADIS 176 Ex (DIS176.ICSI)

1 Area of applicability

These safety instructions apply to VEGADIS 176 Ex (DIS176.ICSI) according to the Certicate of
Conformity IECEx PTB 15.0002 X (certicate number on the type label) and to all instruments with
the number of the safety instruction (50016) on the type label.

2 General information

The VEGADIS 176 Ex (DIS176.ICSI) is an intrinsically safe, scalable, digital indicating instrument
without external energy for installation in hazardous areas of zone 1. It is looped into intrinsically
safe 4 … 20 mA circuits. The voltage supply for power supply of the electronics is taken from the

4 … 20 mA circuit.

The VEGADIS 176 Ex (DIS176.ICSI) is suitable for use in hazardous atmospheres of all combusti­ble materials of explosion group IIA, IIB and IIC for applications requiring EPL-Gb instruments.

If the VEGADIS 176 Ex (DIS176.ICSI) are installed and operated in hazardous areas, the general Ex
installation regulations IEC 60079-14 as well as these safety instructions must be observed.

The operating instructions as well as the installation regulations or standards that apply for explo­sion protection of electrical systems must generally be observed.

The installation of explosion-endangered systems must always be carried out by qualied person-

nel.

EPL-Gb instrument

The VEGADIS 176 Ex (DIS176.ICSI) is installed in hazardous areas requiring an EPL-Gb instrument
of category 2G (EPL-Gb). The VEGADIS 176 Ex (DIS176.ICSI) can be looped in an intrinsically safe
circuit of EPL-Ga instruments.

3 Technical data

Electrical connection values
VEGADIS 176 Ex (DIS176.ICSI)

Voltage supply: (terminals + and - or +

and LED or + and auxiliary terminal Π)

Temperature class Ambient temperature

T6 -40 … +60 °C

Ui ≤ 30 V DC

Ii ≤ 200 mA

Pi ≤ 900 mW

Li = 35.1 µH

Ci = negligibly small

50016-EN-150325

VEGADIS 176 Ex (DIS176.ICSI)

3

Hazardous area
Zone 0, 1, 2
EPL-Ga, Gb, Gc

e.g. sensor

Connection without background lighting

Hazardous area
Zone 1, 2
EPL-Gb, Gc

Local potential equalization

Local potential equalization

Safe area

Associated, intrinsically safe

+

instrument with max.
electrical connection

–

values (see tables)

LED

–

+

–

I

Y

+

+

–

1

LED

–

+

–

I

Y

+

+

–

1

LED

–

+

+

–

I

2

Y

Connectionwith background lighting

LED

–

+

–

I

Y

+

+

–

1

LED

–

+

–

I

Y

+

+

–

1

LED

–

+

+

–

I

2

Y

1 Transmitter power supply 2 Current source 4...20mA

4 Installation/construction

No potential equalisation on the complete circuit between VEGADIS 176 Ex (DIS176.ICSI) and the
sensor(s), associated instrument required.

The required isolation voltage is > 500 V AC.

For applications requiring instruments of EPL-Gb, the intrinsically safe power supply and signal
circuit can correspond to protection class ia or ib. For connection to a circuit with protection class ib,
the ignition protection type identication is Ex ib IIC T6.

For applications requiring EPL-Ga instruments, the intrinsically safe power supply and signal circuit

50016-EN-150325

4

VEGADIS 176 Ex (DIS176.ICSI)

must be in conformity with protection class ia.

The permitted category of the intrinsically safe circuit for the sensor depends on the ame proong

of the associated instrument used.

5 Grounding/Potential equalization

In order to avoid the danger of electrostatic charging of the housing, the VEGADIS 176 Ex (DIS176.

ICSI), used as EPL-Gb instrument, must be electrostatically connected to the local potential equali­sation (transfer resistance ≤ 1 MΩ), e.g. via the ground terminal.

6 Material resistance

The VEGADIS 176 Ex (DIS176.ICSI) must only be used in media against which the materials of the
wetted parts are suciently resistant.

7 Impact and friction sparks

The VEGADIS 176 Ex (DIS176.ICSI) in light metal versions (e.g. aluminium/titanium/zircon) must be
mounted in such a way that sparks from impact and friction between light metals and steel (except
stainless steel, if the presence of rust particles can be excluded) cannot occur.

50016-EN-150325

VEGADIS 176 Ex (DIS176.ICSI)

5

Notes

50016-EN-150325

6

VEGADIS 176 Ex (DIS176.ICSI)

Notes

50016-EN-150325

VEGADIS 176 Ex (DIS176.ICSI)

7

Printing date:

All statements concerning scope of delivery, application, practical use and operat­ing conditions of the sensors and processing systems correspond to the information
available at the time of printing.
Subject to change without prior notice

© VEGA Grieshaber KG, Schiltach/Germany 2015

VEGA Grieshaber KG
Am Hohenstein 113
77761 Schiltach
Germany

Phone [phone]
Fax [phone]
E-mail: [e-mail]
www.vega.com

50016-EN-150325