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34-ST-03-64
Page 12
Parameter Description
Pressure Equipment Directive
(97/23/EC)
The ST 3000 pressure transmitters listed in this Specification have no pressurized
internal volume or have a pressurized internal volume rated less than 1,000 bar (14,500
psig) and/or have a maximum volume of less than 0.1 liter. Therefore, these
transmitters are either; not subject to the essential requirements of the directive
97/23/EC (PED, Annex 1) and shall not have the CE mark, or the manufacturer has the
free choice of a module when the CE mark is required for pressures > 200 bar (2,900
psig).
NOTE: Pressure transmitters that are part of safety equipment for the protection of piping (systems) or vessel(s) from
exceeding allowable pressure limits, (equipment with safety functions in accordance with Pressure Equipment Directive
97/23/EC article 1, 2.1.3), require separate examination.
200
180
160
140
120
100
80
60
40
20
0
185
165
Maximum Ambient
Temperature (°F)
140
350
200
450
Process Interface Temperature (°F)
200
180
160
140
120
100
80
60
40
20
0
185
165
Maximum Ambient
Temperature (°F)
140
350
200
450
Process Interface Temperature (°F)
Figure 13—Ambient temperature and process interface chart.
Transmitter Minimum Span and Maximum Capillary Length
Minimum recommended span for STR12D and STR13D DP Transmitter with two Remote Seals
Diaphragm Capillary Capillary Length
Size 5' 10' 15' 20' 30' 35' maximum
2.4 200 iwc - - - - - 5'
2.9 100 iwc 125 iwc 150 iwc 175 iwc - - 20'
3.5 16 iwc 20 iwc 24 iwc 28 iwc 36 iwc 40 iwc 35'
4.1 12 iwc 15 iwc 18 iwc 21 iwc 27 iwc 30 iwc 35'
Minimum recommended span for STR12D and STR13D DP Transmitter with one Remote Seal
Diaphragm Direct Capillary Capillary Length
Size Mount 5' 10' 15' 20' 30' 35' maximum
2.4 20 psig 30 psig - - - - - 5'
2.9 10 psig 15 psig 20 psig 25 psig 30 psig - - 20'
3.5 50 iwc 80 iwc 100 iwc 120 iwc 140 iwc 180 iwc 200 iwc 35'
4.1 40 iwc 60 iwc 80 iwc 100 iwc 120 iwc 160 iwc 180 iwc 35'
Minimum recommended span for STR14G, STR14A, STR17G Transmitter with Remote Seal
Diaphragm Direct Capillary Capillary Length
Size Mount 5' 10' 15' 20' 30' 35' maximum
2.0 25 psi 30 psi 40 psi 50 psi - - - 15'
2.4 10 psi 15 psi 20 psi 25 psi 30 psi 40 psi 50 psi 35'
2.9 8 psi 9 psi 10 psi 11 psi 12 psi 14 psi 15 psi 35'
3.5 5 psi 5 psi 5 psi 5 psi 5 psi 7 psi 8 psi 35'
4.1 5 psi 5 psi 5 psi 5 psi 5 psi 7 psi 8 psi 35'
Minimum span is the higher of the value from the table above or the value defined under Performance Conditions for the range transmitter
Figure 14—Maximum capillary length and diaphragm size chart.