Deltabar S FOUNDATION Fieldbus Installation
Endress+Hauser 17
‣ When using a mounting bracket, sufficient strain relief must be ensured for the capillaries
in order to prevent the capillary bending down (bending radius 100 (3.94 in)).
‣ Please observe the application limits of the diaphragm seal filling oil as detailed in the
Technical Information for Deltabar S TI00382P, "Planning instructions for diaphragm seal
systems" section.
In order to obtain more precise measurement results and to avoid a defect in the device,
mount the capillaries as follows:
‣ Vibration-free (in order to avoid additional pressure fluctuations)
‣ Not in the vicinity of heating or cooling lines
‣ Insulate if the ambient temperature is below or above the reference temperature
‣ With a bending radius of 100 mm (3.94 in).
‣ Do not use the capillaries as a carrying aid for the diaphragm seals!
‣ The ambient temperature and length of both capillaries should be the same when using
two-sided diaphragm seal systems.
‣ Two diaphragm seals which are the same (e.g. with regard to diameter, material, etc.)
should always be used for the negative and positive side (standard delivery).
P01-FMD78xxx-11-xx-xx-xx-005
Fig. 2: Mounting Deltabar S, FMD78 with diaphragm seals and capillaries, recommended mounting for vacuum
applications: mount pressure transmitter below the lowest diaphragm seal!
Vacuum application (FMD78)
See operrating instructions.
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