YOKOGAWA EML500 Series, Руководство пользователя, Страница: 43 / 85

5-8
IM80B80T10E 21th Edition : Jul.1,2007-00
< 5.MAINTENANCE>
5.6.1 Precautions in Replacing the Sensor
(1) Before making a replacement, check the handle op-
eration.
(2) Place a spare sensor on the seawater valve (

in
Figure “Sensor Installation”). Pull up the currently
used sensor to almost the same height as the spare
sensor, and turn the handle to close the seawater
valve. Then, Remove the sensor and replace it.
Figure Sensor Installation
CAUTION

Removal of Measurement Rod
� To remove the measurement rod, pull it all the way up and close the seawater valve. Then
remove the rod.
� If the rod is removed before closing the valve, seawater will spew out through the valve.
� To remove the chain, fully close the valve (for the HS, HV, and FA models). Then remove the
chain.
5.6.2 Precautions in Installing the Sensor
NOTE
(1) Install the sensor with its heading mark aligned with the heading of the ship. The direction of
the bow is indicated by the dot mark in the sensor.
(2) To prevent the sensor from being stuck, apply a lubricant before inserting it into the sewater
valve. In this case, do not use an excessive amount of lubricant. If there is lubricant on the
electrodes at the top of the sensor, an indication error may occur.
CAUTION
Do not drop the measurement rod or allow any mechanical shock at the tip of the rod. Other-
wise, the rod may be damaged.


ø35 SENSOR
SUPPLIED BY MAKER
SEAWATER VALVE
BOTTOM PLATE
MOUNTING PALTE
ZINC PLATE


ø35 SENSOR
SUPPLIED BY MAKER
SEAWATER VALVE
BOTTOM PLATE
MOUNTING PALTE
ZINC PLATE