Yokogawa EJX430B - Manual (Page 34)

<7. Operation>
7-2
IM 01C27B01-01EN
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
F0701.ai
Figure 7.1 Liquid Flow Measurement
F0702.ai
Tap valve
Drain valve
Vent plug (Fill plug)
Stop valve
Figure 7.2 Liquid Pressure Measurement
■ Confirm that transmitter is operating
properly by integral indicator.
If the transmitter is faulty, an error code is displayed.
F0703.ai
Self-diagnostic error on integral indicator
(Faulity transmitter)
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 device
configuration tool, refer to subsection 9.5.3 for
the corrective action.
■ Verify and Change Transmitter Parameter
Setting and Values
The parameters related to the following items are
minimum required to be set for operation, and set at
factory as specified in order. Confirm or change the
parameters if needed.
• Measurement range(measurement lower/upper
limit, unit)
• Output (Non linearization mode / Sq root mode)
7.2 Zero Point Adjustment
After completing preparations for operating the
transmitter, adjust the zero point. There are two
zero point adjusting ways.
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.