− ７ −
６Ｆ８Ａ０９２６
Handling Precautions (continued)
(5)
If the inside of the converter and detector's terminal box are wetted or humidified, it may
cause insulation deterioration, which can result in
fault or noise occurrence
. So do not
conduct
wiring in the open air on rainy days
.
Also, be careful not to wet down the converter and detector's terminal box even in the case
of indoor wiring, and complete wiring work in a short period of time.
(6)
Observe the following precautions when you open the converter housing cover
:
•
Do not open the cover in the open air unprotected against rain or wind
. This can
cause
electric
shock
or
cause
damage
to
the
flowmeter electronics
.
•
Do not open the cover
under high ambient temperature or high humidity
conditions or in corrosive atmospheres
. This can cause
deterioration of system
accuracy
or cause
damage to the flowmeter electronics
.
(7)
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.
(8)
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
.
(9)
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
5W
.
•
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.
(10)
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
.
(11)
For installation and connection 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.
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: [email protected]
