Toshiba LF494 - Manual (Page 6)

TOSHIBA
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Handling Precautions
■ To obiairi the opiimutn pcrforiimnce from the LJ"494/LF4C4 flowmeter for yeiirs of
coHtinuou!» operation, observe Ihc following preciiutions.
(1) Do not store or instiiJl the flowmeter in:
• places where there is direct sunlight. If this is unavoidable, use an appropriate
sSunshade,
• places where excessive vibration or mechanical shock occurs,
• places where high i строга lure or high humidity conditions obtain,
■ places where corrosive atmospheres obtain,
• places submerged under water,
To put the flowmeter temporarily on the floor, place ¡t carefully with something to
support it so that the tlowmcicr will not topple over,
(2) Exccjlc wiring securely and correctly,
Ground the flowmeter whth 1Ш ohm or less ground resistance* * Avoid a common
ground used with other equipment where earth current may flow. Ал independent
ground is preferable
(3) Seal the cable thoroughly at ths cable gland so that the cable is kept airtight. The
apparatus should not be provided with the cable gland. Please prepare yourself lor
the cable glands which could he 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 appropriate wetted materials suited for the process fluid to be measured.
Otherwise, fluid leakage due to corrosion can be caused,
(6) The converter housing covers ¿re lightened securely at the time of shipment. Do
not remove these covers or glands unless it is necessary to wire new cables or re­
place old ones. Otherwise, gradual deterioration of circuit isolation or damage !o
this product can be caused. Tighten the covers securely again if they have hcca re­
moved.
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