Endress+Hauser Levelflex FMP53 - Page 43

Levelflex FMP53
Endress+Hauser 43
Plastic and glass vessels: Mounting the probe on the outside wall
In the case of plastic and glass vessels, the probe can also be mounted on the outside wall under
certain conditions.
1
2
a
3
A0014150
1 Plastic or glass vessel
2 Metal plate with screw-in sleeve
3 No space between vessel wall and probe!
Requirements
• Dielectric constant of the medium: ε
r
> 7.
• Non-conductive vessel wall.
• Maximum wall thickness (a):
• Plastic: < 15 mm (0.6 in)
• Glass: < 10 mm (0.4 in)
• No metal reinforcements on the vessel.
Note the following when mounting the device:
• Mount the probe directly on the vessel wall without any space between the wall and probe.
• To prevent any influence on the measurement, fit a plastic half pipe with a diameter of at least
200 mm (8 in), or a similar protective unit, on the probe.
• For vessel diameters less than 300 mm (12 in):
On the opposite side of the vessel, fit a grounding plate that is conductively connected to the
process connection and covers around half of the vessel's circumference.
• For vessel diameters of 300 mm (12 in) and higher:
At the process connection, fit a metal plate with a diameter of at least 200 mm (8 in) at a right
angle to the probe (see above).