Toshiba LF470 - Manual (Page 6)

TOSHIBA
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Handling Precautions
■ To obtain the optimum performance from the LF470 flowmeter for years of continuous
operation, observe the following precautions.
(1) Do not store or install the flowmeter in:
• places where there is direct sunlight. If this is unavoidable, use an 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 with 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 flow. An independent
ground is preferable
(3) Seal the cable thoroughly at the cable gland of the converter so that the cable is
kept airtight.
(4) The converter housing covers and the cable glands are tightened securely at the
time of shipment. Do not remove these covers or glands. Otherwise, gradual dete­
rioration of circuit isolation or damage to this product can be caused. Tighten the
covers or cable glands securely again if they have been removed.
(5) Make sure the fluid to be measured will not freeze in the detector pipe. This can
cause damage to the detector pipe.
(6) Select appropriate wetted materials suited for the process fluid to be measured.
Otherwise, fluid leakage due to corrosion can be caused.
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