Proline Promag 53 MODBUS RS485 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 accessories for correct
measuring of problematic fluids:
• Electrode Cleaning Circuitry (ECC) to prevent electrically conductive deposits in the measuring
tube, e.g. for fluids causing buildup (see "Description of Device Functions" manual).
• Empty Pipe Detection (EPD) ensures the detection of partially filled measuring tubes or in the case
of degassing fluids → ä 91.
Vertical orientation
A vertical orientation is ideal in the following cases:
• For self-emptying piping systems and when using empty pipe detection.
• For sludge containing sand or stones and where the solids cause sedimentation.
A0011903
Fig. 10: 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 horizontally only
when the transmitter housing is facing upward (see diagram). Otherwise there is no guarantee that
Empty Pipe Detection will respond if the measuring tube is only partially filled.
A0011904
Fig. 11: Horizontal orientation
1 EPD electrode for empty pipe detection
(not available for "measuring electrode only" option, not in Promag H, DN 2 to 15 (1/12" to ½"))
2 Measuring electrodes for signal detection
3 Reference electrode for potential equalization
(not available for "measuring electrode only" option, not in Promag H)
A
1
22
A
3
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