User`s manual

<7. Operation>
7-1
IM 01C25B01-01E
7. Operation
7.1 Preparation for Starting
Operation
This section describes the operation procedure for
the EJ110, EJ120 and EJ130 as shown
ingure7.1a(verticalimpulsepipingtype,high-
pressure connection: right side) when measuring
theliquidowrate,andEJ430, EJ440 and
EJ310asshowningure7.1bwhenmeasuring
pressure.
NOTE
Check that the process pressure tap valves,
drain valves, and 3-valve manifold stop valves
on both the low pressure and high pressure
sides are closed, and that the 3-valve manifold
equalizingvalveisopened.
(a) Follow the procedures below to introduce
process pressure into the impulse piping and
transmitter.
■DifferentialPressureTransmitters
1) Open the low pressure and high pressure tap
valvestolltheimpulsepipingwithprocess
liquid.
2)Slowlyopenthehighpressurestopvalvetoll
the transmitter pressure-detector section with
processliquid.
3) Close the high pressure stop valve.
4) Gradually open the low pressure stop valve and
completelyllthetransmitterpressure-detector
sectionwithprocessliquid.
5) Close the low pressure stop valve.
6) Gradually open the high pressure stop valve. At
thistime,equalpressureisappliedtothelow
and high pressure sides of the transmitter.
7)Checkthattherearenoliquidleaksinthe
impulse piping, 3-valve manifold, transmitter, or
other components.
■Gauge/AbsolutePressureTransmitters
1)Openthetapvalve(mainvalve)tollthe
impulsepipingwithprocessuid.
2) Gradually open the stop valve to introduce
processuidintothetransmitterpressure-
detector section.
3)Conrmthatthereisnopressureleakin
the impulse piping, transmitter, or other
components.
Venting Gas from the Transmitter Pressure-
detector Section
• Sincethepipingintheexampleofgure7.1
is constructed to be self-venting, no venting
operationisrequired.Ifitisnotpossibleto
make the piping self-venting, refer to subsection
7.5forinstructions.Leavetheequalizingvalve
open even after venting gas.
(b) Turn ON power and connect the communicator.
Open the terminal box cover, and connect
the communicator to the SUPPLY + and
– terminals.
(c) Usingthecommunicator,conrmthatthe
transmitter is operating properly. Check
parameter values or change the setpoints as
necessary.
See IM 01C25T03-01E (BRAIN
communication) or IM 01C25T01-06EN (HART
communication) for communicator operation.
 Ifthetransmitterisequippedwithanintegral
indicator,itsindicationcanbeusedtoconrm
that the transmitter is operating properly.
F0701.ai
Orifice
Tap valve
(high pressure)
Tap valve
(low pressure)
3-valve manifold
Drain valve
(high pressure)
Stop valve
(low pressure)
Stop valve
(high pressure)
Equalizing valve
Figure 7.1a Liquid Flow Measurement