A Quick Overview For You; Signs, Symbols And Abbreviations; Function - WIKA IS-20-S Mode D'emploi

1. Important details for your information / 2. A quick overview for you / 3. Abbreviations, signs
FM / CSA Approval ratings:
Intrinsically Safe with entity approval for Class I, II and III Division 1, Groups A, B, C, D, E, F, G
and Class I, Zone 0, AEx ia IIC
Dust-ignitionproof for Class II and III, Division 1, Groups E, F, and G.
Non-incendive for Class I Division 2 Groups A, B, C and D
Knowledge required
Install and start the pressure transmitter only if you are familiar with the relevant regulations
and directives of your country and if you have the qualification required. You have to be
acquainted with the rules and regulations on hazardous areas, measurement and control tech-
nology and electric circuits. Depending on the operating conditions of your application you
have to have the corresponding knowledge, e.g. of aggressive media or high pressures.

2. A quick overview for you

If you want to get a quick overview, read Chapters 3, 5, 7 and 11. There you will get some
short safety instructions and important information on your product and its starting. Read
these chapters in any case.

3. Signs, symbols and abbreviations

Potential danger of life or of
!
severe injuries.
Warning
Instructions for hazardous
areas: Potential danger of
life or of severe injuries.
Warning
Notice, important informa-
tion, malfunction.
ATEX European guideline for explosion protection (Atmosphère=AT,
Explosible=EX). The product complies with the requirements of the European
directive 94/9/EC (ATEX) on explosion protection.
4 WIKA Operating instructions/Betriebsanleitung/Mode d'emploi/Instrucciones de servicio
GB
Potential danger of life or
of severe injuries due to
catapulting parts.
Warning
Potential danger of burns
due to hot surfaces.
Caution
The product complies with
the applicable European
directives.
IS-2X
3. Signs, symbols and abbreviations / 4. Function
FM
Factory Mutual
The product was tested and
certified by FM Approvals. It
complies with the applicable US-
American standards on safety
(including explosion protection).
GL
Germanischer Lloyd
The product was tested and
certified by GL. It complies with
the requirements of the GL Type
Approval system.
2-wire Two connection lines are intended for the voltage supply.
The supply current is the measurement signal.
U+ Positive supply connection
U- Negative supply connection

4. Function

IS-20: Pressure connection (intrinsically safe) with internal diaphragm (standard version).
IS-21: Pressure connection with flush diaphragm (intrinsically safe) for highly viscous or
solids entrained media which might clog the pressure port.
IS-2X-S: Pressure transmitter (intrinsically safe), version with electrical connector or
flying leads.
IS-2X-F: Pressure transmitter (intrinsically safe), field case version.
IS-20-H: Pressure transmitter (intrinsically safe), highest pressure connection.
Function: The pressure prevailing within the application is transformed into a standardised
electrical signal through the deflection of the diaphragm, which acts on the sensor element
with the power supply fed to the transmitter. This electric signal changes in proportion to the
pressure and can be evaluated correspondingly
WIKA Operating instructions/Betriebsanleitung/Mode d'emploi/Instrucciones de servicio
GB
CSA
Canadian Standard Association
The product was tested and
certified by CSA International.
It complies with the applicable
Canadian and US-American
standards on safety (including
explosion protection).
5
IS-2X