KROHNE BM 70A EEx EN - Manual (Page 4)

07/2010 - 4000662402 MA BM70x-Ex-AD-R02-en www.krohne.com 4
2. Safety-relevant type code
Designation of the signal converter
(see nameplate, places not needed in the type code may be omitted):
BM 70.. / . / . - Ex
1 2 3 4 5
1:
Tank level gauge
2:
Signal converter series
70A : Advanced
70Ai : Advanced + intrinsically safe I/O function
70P : Precision
70Pi : Precision+ intrinsically safe I/O function
700 : Low Cost
702 : 2-wire + intrinsically safe I/O function
702A : 2-wire Advanced + intrinsically safe I/O function
3: Symbol for type of protection for the terminal compartment
E : terminal compartment in Increased Safety “e“ (standard)
D : terminal compartment as Flameproof Enclosure “d“ (option)
unassigned : intrinsically “ia“ (BM 702 / BM 702 A)
4:
Ambient temperature range
S : Extended range –40°C ... +55°C
unassigned : Standard range –20°C ... +55°C
5:
Safety function
Ex : explosion-protected electrical equipment
Designation of the flange system converter (see nameplate):
... . . . . . . . . . - . .
6 7 8 9
6: Flange system series
V96 : Flange system V96
WS : Flange system Wave-Stick
7: Material of waveguide window
unassigned : standard (stainless steel)
H : Hastelloy window
8: Materials of wetted parts
Flange system V96:
» Antennas and flanges, including coating:
SS : stainless steel
HB : Hastelloy B
HC : Hastelloy C
Ti : Titanium
Ta : Tantalum
» Gasket materials:
FFKM : FFKM or Parofluor™
K2035 : Gasket of FFKM 2035
K4079 : Gasket of FFKM 4079
K6230 : Gasket of FFKM 6230
K6375 : Gasket of FFKM 6375
FEPS : FEP coated Silicone
FPM : FPM, e.g. Viton™
FEP : FEP coated FPM
PFA : Gasket PFA- coated stainless steel spring