Toshiba GF630 Instruction Manual page 7

Handling Precautions (continued)
(9) Since a varistor is built in converter, do not conduct a withstand voltage test for the
converter.
In addition, the voltage for checking the insulation of the converter must be 250VDC
or lower.
(10) This product may cause interference to radio and television sets if they are used near
the installation site. Use metal conduits etc. for cables to prevent this interference.
(11) Radio transmitters such as transceivers or cellular phones may cause interference to the
flowmeter if they are used near the installation site. Observe the following precautions
when using them:
•
Close a transmitter cover before using a transceiver.
•
Do not use a transceiver whose output power is more than 5 W.
•
Move the antenna of a transceiver or a cellular phone at least 50 cm away from the
flowmeter and signal cables when using it.
•
Do not use a radio transmitter or a cellular phone near the flowmeter while it is
operating online. The transmitter or cellular phone's output impulse noise may interfere
with the flowmeter.
•
Do not install a radio transmitter antenna near the flowmeter and signal cables.
(12) For reasons of flowmeter failure, inappropriate parameters, unsuitable cable
connections or poor installation 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 signal receiving side.
(13) For installation and connectirn of the converter, check the model number of converter
and read the instruction manual of the relevant converter.
* We assume no responsibility for nonconformity caused by violation of precautions described in
this manual or used in violation of the installation method and the operation method stipulated in
a relevant ordinance or other regulations.
About disposal
When you dispose of this electromagnetic flowmeter detector, follow the ordinance or regulations of your
state.
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