Zone 0
Zone 1 or 2
Safe area
Zone 0 Zone 1 or 2 Safe area
Level
transmitter
Pressure transmitter
pressure transmitter
or differential
Appendix Exi
II. APPENDIX Exi
APC–2000ALW PRESSURE TRANSMITTER,
APR–2000ALW, APR–2200ALW, APR–2000GALW
DIFFERENTIAL PRESSURE TRANSMITTERS,
APR–2000YALW LEVEL PROBE,
APC–2000ALW/L LEVEL TANSMITTER
Ex VERSION
1. Introduction
1.1. This “Appendix Exi” applies to transmitters of types APC–2000ALW, APR–2000ALW,
APR–2200ALW, APR–2000GALW, APC–2000ALW/L and APR–2000YALW in Ex versions only, marked
on the rating plate as shown in 2.2 and denoted Ex in the Product Certificate.
1.2. The appendix contains supplementary information relating to the Ex versions of these transmitters.
During installation and use of Ex transmitters, reference should be made to DTR.APC.APR.ALW.03
(ENG)
in
conjunction with “Appendix Exi”.
2. Use of APC… APR… transmitters in danger zones.
2.1. The transmitters are produced in accordance with the requirements of the following standards
EN 60079-0:2009, EN 60079-26:2007, EN 60079-11:2012, EN 50303:2000
2.2. The transmitters may operate in areas where there is a risk of explosion, in accordance with the rating of
the explosion protection design:
II 1/2G Ex ia IIC T4/T5 Ga/Gb
II 1/2G Ex ia IIB T4/T5 Ga/Gb (version with Teflon-shielelded cable)
II 1D Ex ia IIIC T105
°
°°
°
C Da
I M1 Ex ia I Ma (version with enclosure ss316L)
FTZÚ 08 ATEX 0020X
2.3. Transmitter category and hazard areas
The category 1/2G, contained within the rating, means that the transmitter may be installed within a type 1
or 2 hazard zone. The APC…, APR… process connections may connect to a 0 zone type (see the diagram
below for an example).
3. Identifying marks
.
Intrinsically safe transmitters must have a rating plate
containing the information specified in paragraph 4
of DTR.APC.APR.ALW.03
(ENG
) and also at least the following:
− CE mark and number of notified unit:, , mark
− designation of explosion protection design, certificate number
− values of parameters such as. Ui, Ii, Pi, Ci, Li
− year of manufacture
− text: "SC Version" - transmitters version with lowered values of Ci=2,5nF and Li=18µH.
− text: "SC, SA Version" - separate power supply for transmitters with surge arresters. Power supply must
be separate to earth.
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