Handling precautions (continued), Toshiba – Toshiba LF494 User Manual
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TOSHIBA
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Handling Precautions (continued)
(7) Observe the lollowing precautions when you open the converter housing cover:
• Do not open the cover in the open air unprotected ugainsi rain or wind, I'his
can cause eieciiic shock cr cause damage to the flowmeter electronics,
* Do not open the cover under high ambient teraperaitire or high humidity
conditions or in corrosive atmospheres. This can cause deterioration of
system accuracy or cause damage to the flowmeter electronics,
(8) ThisS product may cause interference to radio and television sets if they are
used near the installation site. Use meta! conduits etc, for cables to prevent
this interference.
(9) Radio transmitters such as transceivers or cellular phones may cause interference
to the flowmeter if they are used near the installation
s i t e .
Observe the following
precautions when using them;
• Do not use a radio transmitter while the cover of flowmeter converter is open.
» Do not use a transceiver whose output power is more than 5 W.
• Move the antenna of a radio transmitter at least 50 cm away from the ilowtneter
and signal cables when using it,
• Do not use a radio transmitter near the flowmeter while it is operating online.
The transmitter’s output impulse noise may interfere with the flowinder.
• Do not install a radio transmitter antenna near the flowmeter converter and
signal cables,
(10) For reasons of flowmeter failure, inappropriate parameters, unsuitable cable con
nections or poor jnstallaiion conditions, the flowmeter may not operate properly.
To prevent any of these problems causing a system failure, it is recommended that
you have preventive measures designed and installed on the flowmeter sigttal re*
ceiving side.
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