Yokogawa EJX930A - Manual (Page 25)

<3. Parameter Setting>
3-14
IM 01C25R02-01E
• Procedure to call up the display using DD
(HART 5/HART 7) and DTM (HART 7)
PV related
parameter
[Root Menu] → Process variables →
Output vars → PV →
→ PV is Current PV value
→ Change PV
Assgn
Select the variable assigned to PV
(Flow, Pres, SP, ET)
SV related
parameter
[Root Menu] → Process variables →
Output vars → SV →
→ SV is Current SV value
→ Change SV
Assgn
Select the variable assigned to SV
(Flow, Pres, SP, ET, Total Flow)
TV related
parameter
[Root Menu] → Process variables →
Output vars → TV →
→ TV is Current TV value
→ Change TV
Assgn
Select the variable assigned to TV
(Flow, Pres, SP, ET, Total Flow)
4V/QV related
parameter
[Root Menu] → Process variables →
Output vars → 4V/QV →
→ 4V is / QV is Current 4V/QV value
→ Change
4V Assgn
/Change QV
Assgn
Select the variable assigned to 4V/QV
(Flow, Pres, SP, ET, Total Flow)
• Procedure to call up the display using DTM
(HART 5)
PV related item Configuration → Output Variables →
→ PV is
Current PV value
→ Change PV
Assgn
Select the variable assigned to PV
(Flow, Pres, SP, ET)
It is similar about SV, TV and 4V.
The process variables that can be assigned are Flow,
Pres, SP, ET, and Total Flow.
3.2.3 Measuring Range
This section shows how to confirm and change
the parameters for measuring range of flow rate,
differential pressure, static pressure, external
temperature, and total flow, and also unit and
damping time constant.
These parameters are set at the factory before
shipment if specified at the time of order.
Follow the procedure below to change them.
About the differential pressure, static pressure and
external temperature, settable range are shown
on the parameters of LSL (Lower settable limit),
USL (Upper settable limit) and Min span (Minimum
span). Set the data within the range.
• Procedure to call up the display
Call up and setting of flow related parameters
DD (HART 5/7)
DTM (HART 7)
[Root Menu] → Detailed setup →
Signal condition → Flow Setup →
DTM (HART 5) Configuration → Flow →
→ Flow LRV
Lower range value for flow
→ Flow URV Upper range value for flow
→ Flow Unit Unit for flow
→ Flow Damp Damping time constant for flow
Call up and setting of differential pressure related
parameters
DD (HART 5/7)
DTM (HART 7)
[Root Menu] → Detailed setup →
Signal condition → DP Setup (or Pres
Setup) →
DTM (HART 5) Configuration → Pressure Sensor →
→ Pres LRV
Lower range value for differential
pressure
→ Pres URV Upper range value for differential
pressure
→ Pres Unit Unit for differential pressure
→ Pres Damp Damping time constant for differential
pressure
Call up and setting of static pressure related
parameters
DD (HART 5/7)
DTM (HART 7)
[Root Menu] → Detailed setup →
Signal condition → SP Setup →
DTM (HART 5) Configuration → Static Pressure
Sensor →
→ SP LRV Lower range value for static pressure
→ SP URV Upper range value for static pressure
→ SP Unit Unit for static pressure
→ SP Damp Damping time constant for static
pressure
Call up and setting of external temperature related
parameters
DD (HART 5/7)
DTM (HART 7)
[Root Menu] → Detailed setup →
Signal condition → ET Setup →
DTM (HART 5) Configuration → External
Temperature Sensor →
→ ET LRV Lower range value for external
temperature
→ ET URV Upper range value for external
temperature
→ ET Unit Unit for external temperature
→ ET Damp Damping time constant for external
temperature
Call up and setting of total flow related parameters
DD (HART 5/7)
DTM (HART 7)
[Root Menu] → Detailed setup →
Signal condition → Total Flow →
DTM (HART 5) Configuration → Total Flow →
→ Total Flow
Unit
Unit for total flow