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ADD FURNACE CO.,LTD.
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70 ถนนบรมรำชชนนี แขวงศำลำธรรมสพน์ เขตทวีวัฒนำ กรุงเทพฯ 10170
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Chapter 3. MOUNTING AND WIRING
WARNING
When using combustible gas,
i
nstall the device upstream of the safety
shut off valve. If air somehow enters the piping, and the sensor makes a
spark due to some cause like a lightning strike when an explosive mixture is
present, an explosion could occer inside the pipe.
On flanged models, do not use the device or installed pipes as a footrest.
Doing so might damage the device or piping, or cause a slip which might
result in injury.
Flanged models are heavy. Dropping them on your feet may cause injury.
Handling Precautions
• When carrying the device, hold it by the flow path section. Holding it by
the sensor/terminal section may damage the device.
• This device is a precision instrument. Do not drop it or subject it to
shock. Doing so might damage the device.
• If the CMG model has a threaded pipe connection, when connecting the
piping fasten the flow inlet/outlet section, and then screw in the pipe side
to connect the piping.
• When connecting a flanged device, first check that the piping is not tilted
or off center before installing. Failure to do so might cause leakage.
• To prevent vibration of the device, attach the pipe securely.
• Do not peel the protective seals from the display before use. When
performing work on the device, tools may accidentally bump against the
display and scratch it.
• When using the device outdoors, mount it out of the direct sunlight and
in a location where it is not splashed directly by rain.
• When mounting the device in locations where rust, oil mist or dust and
powder exists, be sure to provide a strainer or filter upstream to prevent
foreign matter from entering the device. Foreign matter flowing into the
device might result in faulty operation.
• When wiring the device, take care not to tug on the display. The internal
connections might become damaged.
• Wire 4-20mA output and open collector output separately from the
power line and power supply leads. Do not wire these outputs in the
same conduit as the power line and power supply leads. Doing so might
cause malfunction.
• Install a switch for shutting off the main power to the device within reach
of the person operating the device.
• The common mode voltage between output and ground should be less
than 33V RMS, 46.7V at peak or 70Vdc, excluding power supply and
relay contact output.
4
