LW2720
Electronic level sensor
14
6 Mounting
CAUTION
With high process temperatures, parts of the unit may heat up.
w
Risk of burns
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Do not touch the unit.
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Protect the housing against contact with flammable substances and unintentional
contact.
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Allow the unit and process adapter to cool down before maintenance.
Careful handling of the antenna
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Be careful not to scratch or otherwise damage the antenna.
Before installing and removing the unit:
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Make sure that no pressure is applied to the system. Also always take into account the
potential dangers related to extreme machine and medium temperatures.
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Before installing the unit, observe the following mounting specifications.
6.1 Mounting position
The unit is a TLPR device. TLPR (Tank Level Probing Radar) equipment are devices for level
measurement in a closed space only (i.e. metallic, reinforced concrete or fibreglass tanks, or
similar enclosure structures made of comparable attenuating material).
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Use preferably in metal tanks. When used in electrically non-conductive tanks: Non-metallic
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Further requirements:
ETSI EN 302 372 (TLPR), Annex E
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Observe the following when selecting the mounting position:
•
For optimal performance, the unit should be installed in locations with a clear and unobstructed
view of the medium surface.
•
The unit should be mounted with as few internal structures as possible within the signal beam.
•
Do not mount the unit close to or above the inlet stream (
Ò
Fig. Mounting).
•
Do not position the unit directly above a side manway door.
D
Fig. 6: Mounting
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Distance to wall (D): D
min
= 200 mm (8 inch).
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Recommended: ½ of tank radius.
