Toshiba LF434 - Manual (Page 6)

TOSHIBA
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Handling Precautions
■ Jo obtain the oplimum performance from the LF434/LF404 flowmeter for years of
coniinLous operation, observe the following precautions.
(1) Do not store or instafi the flowmeter in:
• places w here there is direct sunlight. If this is unavoidable, use ait appropriate
sunshade.
• places where excessive vibration or mechanical shock occurs,
• places where high temperature or high humidity conditions obtain.
• places where corrosive atmospheres obtain.
• places submerged under water,
To put the flowmeter temporarily on the floor, place it carefully wnth something to
support it so that the flowmeter will not topple over.
(2) Execute wiring securely and correctly.
Ground the flowmeter with 100 ohm or less ground resistance. Avoid a common
ground used with other equipment where earth current may How. An independent
ground is preferable
(3) Seal the cable thoroughly at the cable gland so that the cable is kept airtiglit. 1 he
apparatus should not be provided with the cable gland. Please prepare yourself for
the cable glands w'hicb could be used in Division 2 hazardous locations.
(4) Make sure the fluid to be measured will not freeze in the detector pipe. This can
cause damage to the detector pipe.
(5) Select apprupriate welted materials suited for the process fluid to he measured.
Otherwise, fluid leakage due to corrosion can be caused.
(6) The converter housing covers are tightened securely at the time of shipment. Do
not remove these awers or glands unless it is necessary to wire new cables or re­
place old ones. Otherwise, gradual deterioration of circuit isolation or damage to
this product can be caused. Tighten the covers securely again if they have been re-
[iioved.
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