Yokogawa EJA530E User Manual download pdf (Page 29)

<7. Operation>

7-1

IM 01C25F01-01E

7. Operation

7.1 Preparation for Starting

Operation

This section describes the operation procedure for

the EJ530 as shown in gure 7.1.

NOTE

Check that the process pressure tap valves,

drain valves, and stop valves are closed.

(a) Follow the procedures below to introduce

process pressure into the impulse piping and

transmitter.

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.

(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

Tee

Vent plug (Fill plug)

Union or flange

Drain valve

Drain plug

Stop valve

Union or flange

Tap valve

Figure 7.1 Liquid Flow Measurement

(Gauge Pressure Transmitters)

■ Conrming that Transmitter is Operating

Properly

Using the BT200

• If the wiring system is faulty, ‘communication

error’ appears on the display.

• If the transmitter is faulty, ‘SELF CHECK

ERROR’ appears on the display.

communication error

PARAM

C60:SELF CHECK

ERROR

Communication error

(Faulty wiring)

Self-diagnostic error

(Faulty transmitter)

DATA DIAG PRNT ESC

F0702.ai

Figure 7.2 BT200 Display

1 2 ... 24 25 26 27 28 29 30 31 32 33 34 ... 51 52

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