Siemens 7MF4233 series

Model Designations and Specifications UMSITRPDS3-1
November 2005
9-30
If pressure measurements exceed the measuring limits repeatedly (e.g. batch
processes with transitions between vacuum and ventilation), a measuring cell
with a maximum range of 525 inH
2
O should be selected to avoid overloading.
TABLE 9-20 Absolute Pressure, Differential Construction, 7MF4333
Measuring Span, Continuously Adjustable Process Pressure Limits
3.3 To 100 inH
2
O see Note 464 psi
18 To 525 inH
2
O 464 psi
64 To 2000 inH
2
O 464 psi
400 To 12,000 inH
2
O 2320 psi
77 To 2325 psi 3625 psi
* 2325 psi at M10 process connection.
Note: 100 inH
2
O Cell
This measuring cell is designed for operation within the measuring limits of 0
inH
2
O (absolute) to 100 inH
2
O (absolute). When stored in the normal ambient
pressure of about of about 14.7 psi (absolute), the measuring cell is in the
overload state. An overload error of up to 0.8 inH
2
O may occur. The overload
disappears in normal operation within the measuring limits and the transmitter
operates within specifications.
When performing accurate continuous pressure measurements within the
measuring limits, a readjustment of the transmitter zero for absolute pressure
must be performed after approximately one day (refer to Section 6.2.5).
If pressure measurements exceed the measuring limits repeatedly (e.g. batch
processes with transitions between vacuum and ventilation), a measuring cell
with a maximum range of 525 inH
2
O should be selected to avoid overloading.
TABLE 9-21 Flanged Level, 7MF4633 / 7MF4912
Measuring Span, Continuously Adjustable Maximum Working Pressure
10 To 100 inH
2
O consult factory
10 To 240 inH
2
O consult factory
20 To 640 inH
2
O consult factory
64 To 2000 inH
2
O consult factory