34-ST-03-64 Page 12
Parameter | Description |
Pressure Equipment Directive | The ST 3000 pressure transmitters listed in this Specification have no pressurized |
(97/23/EC) | 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 | |
Maximum Ambient | 160 | |
140 | ||
Temperature (°F) | ||
120 | ||
| ||
| 100 | |
| 80 | |
| 60 | |
| 40 | |
| 20 | |
| 0 |
185
165
140
200 350 450
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
