Yokogawa EJX210B - Manual (Page 33)

<7. Operation>
7-5
IM 01C27C01-01EN
(c) Confirm connecting status
F0708.ai
(d) Join
F0709.ai
7.5 Shutting Down The
Transmitter
Remove the battery pack for turn off the power,
or set into Deep Sleep mode by the device
configuration tool.
NOTE
• Whenever shutting down the transmitter for
a long period, detach the transmitter from the
Tank.
• For details on how to remove the battery
pack, refer to subsection 9.4.5 “Replacing
the Battery Pack.”
• When storing the instrument with a battery
pack inserted, it is recommended to put the
instrument into deep sleep mode to conserve
battery power. For details on how to switch to
deep sleep mode, refer to subsection 8.3.13
“Switching to Deep Sleep Mode.”
7.6 Venting or Draining
Transmitter Pressure-
detector Section
Since this transmitter is designed to be self-
draining and self-venting with vertical impulse
piping connections, neither draining nor venting
will be required if the impulse piping is configured
appropriately for self-draining or self-venting
operation.
If condensate (or gas) collects in the transmitter
pressure-detector section, the measured pressure
may be in error. If it is not possible to configure the
piping for self-draining (or self-venting) operation,
you will need to loosen the drain (vent) screw on the
transmitter to completely drain (vent) any stagnated
liquid (gas).
After draining (or venting), fasten the drain (vent)
screw on the transmitter.
IMPORTANT
Draining condensate or bleeding off gas disturbs
the pressure measurement, this should not be
done when the loop is in operation.
7.6.1 Draining Condensate (low pressure
side)
1) Gradually open the drain plug and drain the
transmitter pressure-detector section.
(See Figure 7.6)
2) When all accumulated liquid is completely
removed, close the drain plug.
3) Tighten the drain plug to a torque of 34 to 39
N·m {3.5 to 4 kgf·m}.
WARNING
Since the accumulated liquid (or gas) may be
toxic or otherwise harmful, take appropriate care
to avoid contact with the body, or inhalation of
vapors.