YOKOGAWA EJX Series User Manual

  <3.Installation>
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IM01C25A01-01E
3.2.1 EJ210
Thetransmitterismountedonaprocessusingits
highpressuresideangeasshowninFigure3.5.The
customershouldpreparethematingange,gasket,stud
boltsandnuts.
F0305.ai
Gasket
Stud bolt
Nut
Figure3.5 EJ210Mounting
3.2.2 EJ118andEJ438
Mountthediaphragmsealsusingtheangesasshownin
Figure3.6.Thematingange,gasket,boltsandnutsare
tobeprocuredbythecustomer.
Nut
Flange
Diaphragm
ød
Gasket
F0306.ai
Bolt
The product is
shipped with these
parts assembled.
Correctly install the diaphragm
seals on the high and low pressure
sides of the process (The label on
each diaphragm seal is marked
HIGH or LOW).
Figure3.6 MountingtheDiaphragmSeals
3.3 DiaphragmSealsInstallation
Consideration
IMPORTANT
• Whenmeasuringtheliquidlevelofthetank,the
minimumliquidlevel(zeropoint)mustbesettoa
levelatleast50mmabovethecenterofthehigh
pressuresidediaphragmseal(seeFigure3.7).
• Correctlyinstallthediaphragmsealsonthehigh
andlowpressuresidesoftheprocess,checking
thelabeloneachseal.
• Toavoidmeasuringerrorduetstemperature
differencebetweenthetwodiaphragmseals,
capillarytubemustbeboundtogether.The
capillarytubemustbesecurelyxedtothetank
walltopreventmovementbywindorvibration.
Ifthecapillarytubeistoolong,looselycoilthe
extratubeportion(coildiameterof300mmor
more)andsecurethecoiledtubewithaclamp.
F0307.ai
50 mm minimum
Minimum
liquid level
High
pressure
side
Low
pressure
side
The transmitter should
be installed as low as
possible below the
position where the high
pressure side
diaphragm seal is
installed.
Install the sealed diaphragm
so that the shank positions
downward.
IMPORTANT
Figure3.7 InstallingtheDiaphragmSealstoa
Tank
Installation
3

YOKOGAWA EJX Series Specifications

General

Brand	YOKOGAWA
Model	EJX Series
Category	Transmitter
Language	English