Yokogawa EJA110E Bedienungsanleitung PDF herunterladen (Seite 35)

<7. Operation>

7-2

IM 01C25B01-01E

Vent plug (Fill plug)

Tap valve

Stop valve

Drain valve

F0702.ai

Figure 7.1b Liquid Pressure Measurement

■ 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

F0703.ai

Figure 7.2 BT200 Display

Using the integral indicator

• If the wiring system is faulty, the display stays

blank.

• If the transmitter is faulty, an error code is

displayed.

Self-diagnostic error on the integral indicator

(Faulty transmitter)

F0704.ai

Figure 7.3 Integral Indicator with Error Code

NOTE

If any of the above errors are indicated on

the display of the integral indicator or the

communicator, refer to subsection 8.5.3 for the

corrective action.

■ Verify and Change Transmitter Parameter

Setting and Values

The parameters related to the following items are

set at factory as specied in order.

• Calibration range

• Integral indicator display

• Output mode

• Software damping (optional)

Other parameters like following are shipped with the

default setting.

• Low-cut

• Process alarm setting

• Static pressure range

• Signal characterizer

• Write protection

To conrm or change the values, see IM 01C25T01-

06EN or 01C25T03-01E.

7.2 Zero Point Adjustment

After completing preparations for operating the

transmitter, adjust the zero point.

Zero point adjustment can be done by turning the

transmitter’s zero-adjustment screw or by using

the communicator. This section describes the

procedure for the zero-adjustment screw. For the

communicator procedure, see the communication

manual.

IMPORTANT

Do not turn off the power to the transmitter

immediately after performing a zero point

adjustment. Powering off within 30 seconds of

performing this procedure will return the zero

point to its previous setting.

NOTE

Before performing this adjustment, make sure

that the external zero adjustment function has

NOT been disabled by a parameter setting.

To check the output signal, use a digital multimeter,

calibrator, or communicator.

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