KROHNE DK 32-DK 34-DK 37 Safety V1 EN - Manual (Page 18)

8
ANNEX
18
DK32 - DK34 - DK37
www.krohne.com 02/2012 - 4000574702 MA DK32 34 37 SIL R02 en
Annex
8.1 Annex 1
Constricted Description Code for DK3* Functional Safety Equipment acc. to EN 61508
The description code for DK32 and DK34 consists of the following elements 1
The description code for DK37 consists of the following elements 1
1 Positions which are not used in the type code are not required.
8.2 Annex 2
Fail-safe contact types, used for SIL2 compliant DK32, DK34, DK37/M8M:
Recommended fail-safe switching amplifiers for the fail-safe NAMUR limit switches
1 32 - with needle valve and horizontal connections / 34 without needle valve and vertical connections
2 RE - Inlet pressure regulator / RA - Outlet pressure regulator
3 K1 - one limit switch / K2 - two limit switches
4 S - plug connection / L - cable gland incl. 1.5m cable
5 A - limit switch EC type-tested
6 EX - Explosion-protected equipment
7 SK - SIL2 compliance of limit switches acc. to IEC 61508
1 M8M - Mechanical display / M8E - Electronic display and signal output 4...20mA
2 RE - Inlet pressure regulator / RA - Outlet pressure regulator
3 K1 - one limit switch / K2 - two limit switches
4 Ex is not part of the designation key
5 SK - SIL2 compliance of limit switches acc. to IEC 61508
SE - SIL1 compliance of current output acc. to IEC 61508
SJ2-SN (Pepperl+Fuchs) 2-wire fail-safe inductive NAMUR switch
SJ2-S1N (Pepperl+Fuchs) 2-wire fail-safe inductive NAMUR switch (inverted)
Type code Manufacturer Supply voltage Channel Output
KFD2-SH-Ex1 Pepperl+Fuchs 20…35 Vdc 1 safe fail Redundant relay
KHD2-SH-Ex1.T.OP Pepperl+Fuchs 20…35 Vdc 1 safe fail Electronic + relay
KHA6-SH-Ex1 Pepperl+Fuchs 85…253 Vac 1 safe fail Redundant relay
MA_DK32_34_37_SIL_R02_en_574702_PRT.book Page 18 Thursday, March 1, 2012 9:53 AM