Siemens 7MF4233 series

UMSITRAPDS3-1 Model Designations and Specifications
November 2005
9-17
TABLE 9-10 Measuring Cells for Pressure and Flow, Differential Const., Service Parts
DS III and DS III PA series, differential construction, 7MF4994-
Measuring cell filling Measuring cell cleaning
Silicon oil Normal
1
Inert Grease-free
3
Nominal measuring range
PN 460 psi, static span 0.4 To 8 inH
2
O
1)
B
PN 2320 psi, static span 0.4 To 24 inH
2
O
C
1 To 100 inH
2
O
D
2.4 To 240 inH
2
O
E
6.4 To 640 inH
2
O
F
20 To 2000 inH
2
O
G
4.3 To 435 psi
H
Wetted parts materials (stainless steel process flanges)
Seal diaphragm Parts of measuring cell
Stainless steel Stainless steel
A
Hastelloy Stainless steel
B
Hastelloy Hastelloy
C
Tantalum
2)
Tantalum
E
Monel
2)
Monel
H
Gold
2) 3)
Gold
L
Process connection
Female thread 1/4-18 NPT with flange connection to DIN 19213 with:
Sealing screw opposite process connection
- Mounting thread M10
0
- Mounting thread 7/16-20 UNF
2
Sealing screw on side of process flange
- Mounting thread M10
4)
4
- Mounting thread 7/16-20 UNF
4)
6
Non-wetted parts materials
Process flange screws
Steel
0
Stainless steel
2
1)
Not for remote seal connection
2)
Only with span D, F, G, or H
3)
Only with stainless steel process flange screws
4)
Not with K01 or K02
Other versions
Add "Z" to the order number and the specify order code 7MF4994-............- Z
Process flange O-ring (instead of FPM (Viton)) made of:
- PTFE (Teflon)
A20
- FEP (with silicone core, approved for foodstuffs
A21
- FFPM (Kalrez)
A22
- NBR (Buna N)
A23
Remote seals; not with K01, K02 or K04
D20
Vent on side for gas measurements
H02
Process flanges of stainless steel for vertical differential lines; not with K01, K02 or K04
H03
Process flanges:
- without process flanges
K00
- Hastelloy flanges
K01
- Monel flanges
K02
- Stainless steel, with PVDF insert, flanges
K04