Yokogawa EJX430B - Manual (Page 37)

<7. Operation>
7-5
IM 01C27B01-01EN
(a) Deep sleep
F0707.ai
(b) Ready and pause
F0708.ai
(c) Confirm connecting status
F0709.ai
(d) Join
F0710.ai
NOTE
If the transmitter searches the Field Wireless
Network for long time at low ambient
temperature condition, sometimes error “AL.70
LOWBAT” is displayed on the Integral Indicator.
Even though using new batteries, it can occur. It
occurs because of battery characteristics. After
joining to the Field Wireless Network, this error
will be cleared within one hour if battery has no
failure.
7.5 Shutting Down the
Transmitter
Shut down the transmitter as follows.
1) Remove the battery pack or set the
transmitter to deep sleep mode by the Device
Configuration Tool.
2) Close the low pressure stop valve.
3) Open the equalizing valve.
4) Close the high pressure stop valve.
5) Close the high pressure and low pressure tap
valves.
NOTE
• Whenever shutting down the transmitter for
a long period, remove any process fluid that
is in the impulse piping and in the transmitter
pressure-detector section.
• The equalizing valve must be left OPEN.
• Refer to subsection 9.4.6 “Replacing the
Battery Pack” for the battery pack removing.
• 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 8.3.16
“Switching to the Deep Sleep Mode.”