Proline Prowirl 73 Installation
Endress+Hauser 17
3.2 Installation conditions
Note the following points:
• The measuring device requires a fully developed flow profile as a prerequisite for correct
volume flow measurement. The inlet and outlet runs therefore have to be taken into account
(ä 20).
• The maximum permitted ambient temperatures (ä 84) and fluid temperatures (ä 85)
must be observed.
• Pay particular attention to the notes on orientation and piping insulation (ä 18).
• Verify that the correct nominal diameter and pipe standard (DIN/JIS/ANSI) were taken into
account when ordering since the calibration of the device and the achievable accuracy depend on
these factors. If the mating pipe and the device have different nominal diameters/pipe standards,
an inlet correction can be made via the device software by entering the actual pipe diameter
(ä 140, D MATING PIPE function).
• The correct operation of the measuring system is not influenced by plant vibrations up to 1 g,
10 to 500 Hz.
• For mechanical reasons, and in order to protect the piping, it is advisable to support heavy sensors.
3.2.1 Dimensions
All the dimensions and lengths of the sensor and transmitter are provided in the separate "Technical
Information" document.
3.2.2 Installation location
We recommend you observe the following dimensions to guarantee problem-free access to the
device for service purposes:
• Minimum spacing (A) in all directions = 100 mm (3.94")
• Necessary cable length (L): L + 150 mm (5.91")
A0001870
Fig. 5: Minimum spacing
A Minimum spacing in all directions
L Cable length
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