YOKOGAWA DP harp EJX Series - Page 41

<7. Operation>
7-2
IM 01C25B01-01E
Vent plug (Fill plug)
Tap valve
Stop valve
Drain valve
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Figure 7.1b Liquid Pressure Measurement
■ Conrming that Transmitter is Operating
Properly
Using the BT200
IMPORTANT
• Analog output may change temporally in
connecting with BRAIN terminal due to
aninitialcurrentowedtoit.Toprevent
communicationsignala󰀨ectingtheupper
system, it is recommended to install a low-
passlter(approximately0.1s).
• Communication signal is superimposed on
analog output signal. It is recommended
tosetalow-passlter(approximately
0.1s) to the receiver in order to reduce the
outpute󰀨ectfromcommunicationsignal.
Beforeonline-communication,conrmthat
communicationsignaldoesnotgivee󰀨ecton
the upper system.
• 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
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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.