3.1 Considerations for ST 3000 Transmitter, Continued
Pressure ratings
Table 6 lists maximum working pressure for a given transmitter Upper
Range Limit (URL).
The maximum allowable working pressure (MAWP) is the pressure
used for the approval body safety calculations.
Table 6 Transmitter Maximum Allowable Working Pressure (MAWP) Ratings
Transmitter Type Upper Range Limit
(URL)
MAWP
Draft Range
10 inches H
2
O (25
mbar)
50 psi (3.5 bar)
Differential Pressure
400 inches H
2
O (1 bar) 3000 psi (210 bar)
100 psi (7 bar) 3000 psi (210 bar)
3000 psi (210 bar) 3000 psi (210 bar)
Gauge Pressure
100 psi (7 bar) 100 psi (7 bar)
300 psi (21 bar) 300 psi (21 bar)
500 psi (35 bar) 500 psi (35 bar)
3000 psi (210 bar) 3000 psi (210 bar)
6000 psi (415 bar) 6000 psi (415 bar)
10000 psi (690 bar) 10000 psi (690 bar)
400 inches H2O (1 bar)
Flange Mount
100 psi (7 bar)
Per selected flange and material
(ANSI/ASME 150#, 300#, DN
PN40)
400 inches H2O (1 bar)
Remote Seal
100 psi (7 bar)
Lesser MAWP of either Remote
Seal selected or transmitter
pressure rating
Absolute Pressure
780 mmHg Absolute
(1 bar)
780 mmHg Absolute
(1 bar)
500 psia (35 bar) 500 psia (35 bar)
Note: Maximum Allowable Working Pressure (MAWP) may vary with materials of construction and process
temperature. For more specific information, refer to the appropriate Specification and Model Selection
Guide or transmitter nameplate
Note: To convert bar values to kilopascals (kPa), multiply by 100.
For example, 3.5 bar equals 350 kPa.
2/05 ST 3000 Release 300 Installation Guide
19
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