Yokogawa EJX930A - Manual (Page 36)

<3. Parameter Setting>
3-25
IM 01C25R02-01E
• Procedure to call up the display
DD (HART 5/7)
DTM (HART 7)
[Root Menu] → Detailed setup →
Output condition → Process Alerts
→ DO config → DO Select
DTM (HART 5) Configuration → Process Alerts →
DO Select
Display Item Contents (Select a output variable
from the list below)
Off –
Pres Differential pressure
SP Static pressure
Temp External temperature
Pres/SP Differential pressure and static
pressure
Pres/Temp Differential pressure and external
temperature
SP/Temp Static pressure and external
temperature
Pres/SP/Temp Differential pressure, static pressure
and external temperature
Flow Flow rate
Pres/Flow Differential pressure and flow rate
SP/Flow Static pressure and flow rate
Temp/Flow External temperature and flow rate
Pres/SP/Flow Differential pressure, static pressure
and flow rate
Pres/Temp/Flow Differential pressure, external
temperature and flow rate
SP/Temp/Flow Static pressure, external
temperature and flow rate
Pres/SP/Temp/
Flow
Differential pressure, static pressure,
external temperature and flow rate
Diag Alarm Alarm for advanced diagnostics
(Refer to subsection 4.2.2.5)
All Alarm for differential pressure, static
pressure, external temperature, flow
rate, and advanced diagnostics
NOTE
No status output signal has been defined for a
CPU failure or hardware error. Use a 4-20 mA
signal to indicate a transmitter’s failure.
 Status output for higher alert value
 Status output for lower alert value
F0306.ai
Output
(%)
Status output
Status output
*: 5% of setting span for differential pressure / pressure
Time (t)
Time (t)
Setting
value
Setting
value
5%* of hysteresis
Output
(%)
5%* of hysteresis
On Off
On
On
On
Off
Example: Status output operation of ON
WHEN AL. DETECT
Figure 3.2 Status Output
(3) Setting of pulse output
When the pulse output is used, either scaled pulse
output or frequency output is selected in subsection
3.3.12 (1).
Then configure the parameter shown below.
a. Scaled pulse
A single pulse is output for a specified flow
amount.
b. Frequency output
The flow rate is determined from the number of
output pulses per second.