Endress+Hauser Micropilot FMR53 - Page 29

Micropilot FMR53, FMR54 HART Installation
Endress+Hauser 29
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 Container with heat insulation
1
2
A0032207
If process temperatures are high, the device should be included in the usual container
insulation system (2) to prevent the electronics from heating as a result of thermal radiation
or convection. The insulation should not be higher than the neck of the device (1).
6.8 Turning the transmitter housing
To provide easier access to the connection compartment or display module, the transmitter
housing can be turned: