Emerson EZH and EZHSO Series Pressure Reducing Regulators Manual de instrucciones Pagina 6

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Type OS2
6
Table 9. Mechanism Box (BM) Versions
Version Installation Sealing Connection Mechanical Connection
Electrical connections
Common NF NO Connection
C0 - - - - IP 68 Without 1/2 NPT cap - - - -
C1
Explosion proof
IP 68
Explosion
proof
3 m wire Black Blue Brown Wires
C2 IP 68 Explosion proof connector box/PE explosion proof 3 4 5 Screwed wiring
C3 Intrinsical safe IP 68 Intrinsical safe tight-shut connector A B C Welded wiring
Contact
Figure 16. Different Versions of BM Connections
BK
BU
BN
A
B
C
NF --> BK(A)/BU(B)
NO --> BK(A)/BN(C)
WIRING
BK
BU
BN
123456
NF --> BK(3)/BU(4)
NO --> BK(3)/BN(5)
WIRING
Version C3 connection
Explosion proof connection
with sealed connector for intrinsic safe
Version C2 connection
Explosion proof connection
with explosion proof connector box
N14
N15
N13
BK
BU
BN
NF --> BK/BU
NO --> BK/BN
WIRING
Version C1 connection
Explosion proof connection with cable
and tight-shut packing gland
3 m
BK
BU
BN
NF --> BK/BU
NO --> BK/BN
WIRING
NF : Normally closed
NO: Normally opened
Table 8. Mechanism Box (BM) Connections
AC DC
Max. intensity 7.0 A 0.8 A
Max. tension 400 V 250 V
Protection EEx-d IIC T6
Tightness IP 66
Temperature -29°C +71°C
Fastening 2 M3 screws
Cable 3 wires (black, brown, blue) H05VVF (3 x 0.75 mm²) D 6.5 mm
Figure 17. BMS with Diaphragm Figure 18. BMS with Piston Figure 19. BMS with Bellows
N16 N17 N18
SAFETY MANOMETRIC BOX (BMS) DESCRIPTION AND SPARE PARTS
SAFETY
MANOMETRIC
BOX (BMS)
BASE
SAFETY
MANOMETRIC
BOX 1 (TYPE BMS 1)
“HOOK” KIT
SAFETY
MANOMETRIC
BOX 2 (YPE BMS 2)
“HOOK” KIT
SAFETY
MANOMETRIC
BOX (BMS)
BASE
SAFETY
MANOMETRIC
BOX 1 (TYPE BMS 1)
“HOOK” KIT
SAFETY
MANOMETRIC
BOX 2 (TYPE BMS 2)
“HOOK” KIT
SAFETY
MANOMETRIC
BOX (BMS)
BASE
SAFETY
MANOMETRIC
BOX 1 (TYPE BMS 1)
“HOOK” KIT
SAFETY
MANOMETRIC
BOX 2 (TYPE BMS 2)
“HOOK” KIT
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