Micropilot FMR51, FMR52 PROFIBUS PA Installation
Endress+Hauser 27
• Alighn the marker perpendicular (90°) to the tank connectors.
• Measurements can be performed through an open full bore ball valve without any
problems.
• After mounting, the housing can be turned 350° in order to facilitate access to the display
and the terminal compartment → 27.
6.6.1 Recommendations for the bypass pipe
• Metal (no plastic or enamel coating).
• Constant diameter.
• Select horn antenna as big as possible. For intermediate sizes (e.g. 95 mm (3.5 in)) select
next larger antenna and adapt it mechanically (for horn antennas).
• Diameter difference between horn antenna and inner diameter of the bypass as small as
possible.
• At any transition (i.e. when using a ball valve or mending pipe segments), no gap may be
created exceeding 1 mm (0.04 in).
•
In the area of the tank connections (~ ±20 cm (7.87 in)) a reduced accuracy of the
measurement has to be expected.
6.7 Vessels with heat insulation
A0019142
If process temperatures are high, the device must be included in normal tank insulation to
prevent the electronics heating up as a result of heat radiation or convection. The insulation
may not exceed beyond the neck of the housing.
6.8 Turning the transmitter housing
To provide easier access to the connection compartment or display module, the transmitter
housing can be turned:
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