Proline Promag 53 PROFIBUS DP/PA
Installation
Hauser
19
3.2.3
Orientation
An optimum orientation position helps avoid gas and air entrainment and deposits in the measuring
tube. Promag, nevertheless, supplies a range of functions and accessories 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
• Exchangeable measuring electrodes for abrasive fluids (only Promag W)
Vertical orientation
This is the ideal orientation for self-emptying piping systems and for use in conjunction with Empty
Pipe Detection.
a0003206
Fig. 11:
Vertical orientation
Horizontal orientation
The measuring electrode plane should be horizontal. This prevents brief isolation of the two
electrodes by entrained air bubbles.
"
Caution!
Empty Pipe Detection functions correctly with the measuring device installed horizontally only
when the transmitter housing is facing upward (see Figure). Otherwise there is no guarantee that
Empty Pipe Detection will respond if the measuring tube is only partially filled or empty.
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Fig. 12:
Horizontal orientation
1
EPD electrode for empty pipe detection (not for Promag H, DN 2 to 4)
2
Measuring electrodes for the signal acquisition
3
Reference electrode for potential matching (not for Promag H)
A
1
2
2
A
3