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| | | © Siemens AG 2007 | | |
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| | | SITRANS P measuring instruments for pressure | | |
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| | | ressure and absolute pressure | | |
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| | | I Overview | | |
| | | Function The measured pressure is transferred from the diaphragm, mounted on the inner circumference of the clamp-on seal, to the filling liquid and then passes through the capillary to the measuring chamber of the pressure industrial transmitter. The interior of the clamp-on seal and of the capillary, as well as the measuring chamber of the pressure transmitter, are filled gas-free by the filling liquid. Note: When operating in the low-pressure range, also during commissioning, it is recommended to use a vacuum-proof pressure transmitter (see Selection and Ordering data). ■ Technical specifications Clamp-on seals of quick-release design for pressure | | |
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| | | | | | | | | | | Connection | Nominal diameter | Nominal pressure | | | | • To DIN 11851 with threaded socket | DN 25 | PN 40 | | | | | DN 40 | PN 40 | | | | | DN 50 | PN 25 | | | | | DN 65 | PN 25 | | | | | DN 80 | PN 25 | | | | | DN 100 | PN 25 | | | | • Clamp connection | 1/ inch | PN 40 | | | | | 2 inch | PN 40 | | | | | 2/ inch | PN 40 | | | | | 3 inch | PN 40 | | | | | | | | | | |
| | | Quick-release clamp-on seals, to DIN 11851 with threaded socket | | |
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| | | | | | | | | Material • Main body • Diaphragm | Stainless steel 1.4404/316L Stainless steel 1.4404/316L | | | | Capillary | | | | | • Length | Max. 10 m (32.8 ft) | | | | • Internal diameter | 2 mm (0.079 inch) | | | | • Minimum bending radius | 150 mm (5.9 inch) | | | | Filling liquid | • Food oil (FDA listed) • Glycerin/water (not suitable for use in low-pressure range) | | | | | | | | |
| | | Quick-release clamp-on seals, with clamp connection Quick-release clamp-on seals for pressure are available for the following SITRANS P pressure transmitter series: • MK II • P300 • DS III • DS III PA • DS III FF I Application The quick-release clamp-on seal is a special design for flowing media and high-viscosity media. Since it is completely integrated in the process pipe, no turbulences, dead volumes or other obstructions to the flow occur. The measured medium flows unhindered through the clamp-on seal and results in self-cleaning of the measuring chamber. Furthermore, the clamp-on seal can be cleaned by a pig. | | |
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| | | Permissible ambient temperature | | Dependent on the pressure transmitter and the filling liquid of the remote seal More information can be found in the technical data of the pressure transmitters and in the section "Technical data of filling liquid" in the Technical description to the remote seals | | |
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| | | Weight | | Approx. 4 kg (approx. 8.82 lb) | | |
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| | | Certificate and approvals Classification according to pressure equipment directive (DRGL 97/23/EC) | | |
| | | For gases of fluid group 1 and liquids of fluid group 1; complies with the requirements of article 3, paragraph 1 (appendix 1); assigned to category III, conformity evaluation module H by the TUV Nord | | |
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| | | I Design | | |
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| | | The quick-release clamp is available in two versions: • DIN 11851 with threaded socket • Clamp connection The clamp-on seal is connected to the pressure transmitter either directly or by way of a capillary. | | |
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| | | Siemens FI 01 • 2008 | | |
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