Promag 53 PROFIBUS-DP/-PA 3 Installation
Endress+Hauser 15
3.2.3 Orientation
An optimum orientation position helps avoid gas and air accumulations and deposits in
the measuring tube. Promag, nevertheless, supplies a range of functions and accesso-
ries for correct measuring of problematic fluids:
• Electrode Cleaning Circuit (ECC) for applications with accretive fluids, e.g. electrically
conductive deposits
→ “Description of Device Functions” manual.
• Empty Pipe Detection (EPD) ensures the detection of partially filled measuring tubes,
e.g. in the case of degassing fluids or varying process pressures (see Page 106)
• Exchangeable measuring electrodes for abrasive fluids (see Page 128)
Vertical orientation
This is the ideal orientation for self-emptying piping systems and for use in conjunction
with Empty Pipe Detection.
Fig. 9: Vertical orientation
Horizontal orientation
The measuring-electrode plane should be horizontal. This prevents brief insulation of
the two electrodes by entrained air bubbles.
Caution:
Empty Pipe Detection functions correctly with the measuring device installed horizon-
tally only when the transmitter housing is facing upward (Fig. 10). Otherwise there is no
guarantee that Empty Pipe Detection will respond if the measuring tube is only partially
filled or empty.
Fig. 10: Horizontal orientation
1 EPD electrode for the detection of empty pipes (not with Promag H, DN 2...8)
2 Measurement electrodes for the signal acquisition
3 Reference electrode for the potential equalisation (not with Promag H)
F06-5xxxxxxx-11-00-00-xx-004F06-5xxxxxxx-11-00-xx-xx-000
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