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Model Designations and Specifications
TABLE 9-9 Measuring Cells for Absolute Pressure, Differential Const., Service Parts
DS III and DS III PA series, Differential Construction, 7MF4993-
Measuring cell filling
Silicon oil
Inert
Nominal measuring range
3.3 inH
20 inH
14.4 psia To
Wetted parts materials (stainless steel process flanges)
Seal diaphragm
Stainless steel
Hastelloy
Hastelloy
Tantalum
Monel
1)
Gold
Process connection
Female thread 1/4-18 NPT with flange connection to DIN 19213 with:
Sealing screw opposite process connection
- Mounting thread M10
- Mounting thread 7/16-20 UNF
Sealing screw on side of process flange
- Mounting thread M10
- Mounting thread 7/16-20 UNF
Non-wetted parts materials
Process flange screws
Steel
Stainless steel
1)
Only with stainless steel process flange screws
2)
Maximum PN 2320 psi static
3)
Not for spans G, H, or K
Other versions
Add "Z" to the order number and the specify order code
Process flange O-ring (instead of FPM (Viton)) made of:
- PTFE (Teflon)
- FEP (with silicone core, approved for foodstuffs
- FFPM (Kalrez)
- NBR (Buna N)
Remote seals; not with K01, K02 or K04
Vent on side for gas measurements
Without process flange
Process flange made of:
- Hastelloy
- Monel
- Stainless steel with PVDF insert
9-16
Measuring cell cleaning
Normal
Grease-free
Oa To
100 inH
Oa
2
2
Oa To
525 inH
Oa
2
2
2.3 psia To
72 psia
435 psia
77 psia To
2320 psia
Parts of measuring cell
Stainless steel
Stainless steel
Hastelloy
Tantalum
Monel
Gold
2)
3)
1
3
PN
460 psi
460 psi
460 psi
460 psi
3625 psi
7MF4993-............- Z
A20
A21
A22
A23
D20
H02
K00
K01
K02
K04
UMSITRPDS3-1
D
F
G
H
K
E
A
B
C
E
H
L
0
2
4
6
0
2
November 2005
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