Fully welded diaphragm seal systems
Increased application safety due to leak-free sealing faces
Challenge
Diaphragm seals are often the best choice, if vibrations, high temperatures or aggressive media need to be kept away from pressure and DP transmitters – provided that gas cannot enter the filling oil in the diaphragm seal system. Leakages in the attachment to a pressure transmitter or at the sealing face of the diaphragm compromise any measurement.
Solution
For a high degree of application safety, the connection between KROHNE pressure transmitters and a diaphragm seal system (e.g. via capillary tubes) is always fully welded after the system has been filled. In addition, the weld seams of the diaphragms are drawn over the sealing face. There is no contact of the process medium to the less corrosion resistant weld seam and the material transition of the membrane to the base material.
Safety benefits
Elimination of potential leakages caused by wrong installation and handling of diaphragm seal systems
Fully welded diaphragm seal attachments and sealing faces prevents ingress of gas and contamination of filling oil
High measurement performance over the entire system service life
Supply of finally mounted, filled, welded and calibrated assembly of pressure transmitter with diaphragm seal system from one single source
Various wetted materials and coatings available (e.g. tantalum, PTFE, gold etc.)
OPTIBAR DSD 3100
Diaphragm seal with flange design and optional extension
OPTIBAR DSD 3110
Diaphragm seal with flange design and optional extension
OPTIBAR DSD 3210
Diaphragm seal with flange design and optional extension
OPTIBAR DSD 3220
Diaphragm seal with flange design and optional extension
OPTIBAR DSP 2000
Diaphragm seal with threaded connection or open measuring flanges
OPTIBAR DSP 3000
Diaphragm seal with flange design and optional extension