Deltabar S PMD70/75 FMD76/77/78
Deltabar S, PMD70, PMD75, FMD76, FMD77, FMD78 - from AoteWell
Deltabar S, PMD70, PMD75, FMD76, FMD77, FMD78 - from AoteWell
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www.aotewell.com www.fa-market.com info@aotewell.com<br />
<strong>Deltabar</strong> S<br />
Planning instructions, diaphragm seal systems<br />
Note!<br />
The performance and the permitted range of application of a diaphragm seal system depend on the process<br />
isolating diaphragm used, the filling oil, the coupling, the unit design and on the process and ambient<br />
conditions present in the individual application.<br />
To help you select the right diaphragm seal system for your applications, Endress+Hauser provides its<br />
customers with the free "Applicator Sizing Diaphragm Seal" tool, which is available on CD or online at<br />
"www.endress.com/applicator".<br />
Applicator Sizing Diaphragm Seal FMD<strong>78</strong>-en<br />
For more detailed information or the layout of the optimum diaphragm seal solution for your application, please<br />
contact your local Endress+Hauser Sales Center.<br />
Applications<br />
Design and operation mode<br />
Diaphragm seal systems should be used if the process and the device should be separated. Diaphragm seal<br />
systems offer clear advantages in the following instances:<br />
• In the case of extreme process temperatures<br />
• For aggressive media<br />
• In the case of process media that crystallize<br />
• In the case of corrosive or highly various process media or process media with solids content<br />
• In the case of heterogeneous and fibrous process media<br />
• If extreme measuring point cleaning is necessary, or for very humid mounting locations<br />
• If the measuring point is exposed to severe vibrations<br />
• For mounting locations that are difficult to access<br />
Diaphragm seals are separating equipment between the measuring system and the process medium.<br />
A diaphragm seal system consists of:<br />
• A diaphragm seal in a one-sided system, e.g. FMD<strong>77</strong> or two diaphragm seals in a two-sided system,<br />
e.g. FMD<strong>78</strong><br />
• One capillary tube or two capillary tubes<br />
• Fill fluid<br />
• A differential pressure transmitter<br />
The process pressure acts via the process isolating diaphragm of the diaphragm seal on the liquid-filled system,<br />
which transfers the process pressure via the capillary tube onto the sensor of the differential pressure<br />
transmitter.<br />
62 Endress+Hauser<br />
AoteWell International.inc sales@aotewell.com Tel: +852-6563-2160
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