Yokogawa EJA530A - Manual (Page 28)

IM 01C21F01-01E 7-1
7. OPERATION
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.
(c) Using the BT200, confirm that the transmitter is
operating properly. Check parameter values or
change the setpoints as necessary. See Chapter 8 for
BT200 operation.
F0701.EPS
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)
᭿ 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)