Yokogawa EJA530A Manuel d'utilisateur télécharger pdf (Page 28)

IM 01C21F01-01E

7-1

7. OPERATION

7.1 Preparation for Starting

Operation

This section describes the operation procedure for

measuring a pressure as shown in Figure 7.1.

NOTE

Confirm that the process pressure tap valve,

drain valve, and stop valve are closed.

(a) Introduce a process fluid into the impulse piping

and then to the transmitter in the following proce-

dure:

1) Open the tap valve (main valve) to fill the impulse

piping with process fluid.

2) Gradually open the stop valve to introduce process

fluid into the transmitter pressure-detector section.

3) Confirm that there is no pressure leak in the

impulse piping, transmitter, or other components.

(b) Turn ON power and connect the BT200.

operating properly. Check parameter values or

change the setpoints as necessary. See Chapter 8 for

BT200 operation.

F0701.EPS

Te e

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)

 Confirming 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.EPS

Using the integral indicator

• If the wiring system is faulty, the display stays blank.

• If the transmitter is faulty, an error code will appear

on the display according to the nature of the error.

Self-diagnostic error on

the integral indicator

(Faulty transmitter)

F0703.EPS

NOTE

If any of the error indications above appears on

the display of the integral indicator or BT200,

refer to Subsection 8.5.2 for corrective action.

 Verify and Change Transmitter Parameter

Setting and Values

The following parameters are the minimum settings

required for operation. The transmitter has been

shipped with these parameters. To confirm or change

the values, see Subsection 8.3.3.

• Measuring range..........See Subsection 8.3.3 (2)

• Operation mode...........See Subsection 8.3.3 (7)

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Yokogawa EJA530A Manuel d'utilisateur Page 28

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