WIKA FLM-CAI Betriebsanleitung Seite 15

5. Commissioning, operation
During mounting, ensure that the guide tube is not bent and that the float is not
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subjected to shock loads.
The installation of the level transmitter in areas with strong external magnetic fields is
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not permitted, since this will impede the correct measured value determination.
The level transmitter can also be installed in the vessel from below. If the vessel is also
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pressurised, then the maximum length of the level transmitter is 2 m.
If, during mounting, the float is removed, it must be slid back onto the guide tube with
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the marking "TOP" in the direction of the probe head, so that correct measurement can
be made.
Information for safe mounting
The mounting should only be carried out in an unpowered state!
Prior to installation, it may be necessary to remove the float(s). When assembling, make
sure that the float(s) is/are mounted in the correct position on the sensor tube.
Only the sensor head of the ...LM-...I model with screw terminals should be opened.
Information for safe installation
The installation should only be carried out in an unpowered state. Observe special
regulations, e.g. EN 60079-14 or the local installation regulations.
If the level transmitter is supplied with a screw-in body, the thread of the screw-in body
must be provided with suitable sealing material, screwed into the existing bushing and
tightened. If the level transmitter is supplied without process connection, the operator is
responsible for compliance with the Ex requirements.
General note (see also EN 60079-26, section 4.3)
If the level transmitter is installed in the separating wall between zone 0 and zone 1, a
sufficiently tight gap (IP66 or IP67) must be ensured after installation.
The process connection may cause an opening in the separating wall to the area requiring
EPL "Ga". There is then a risk of flammable gases being released and flames breaking
through.
Operating instructions magnetostrictive level transmitter, models FLM-xAI, BLM-TAI (Ex)
EN
15