YOKOGAWA DPharp EJXC40A, Руководство пользователя

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<7. HART Communication>
7-8
IM 01C25W05-01EN
7.2.3 Detail Setup
7.2.3.1 Pressure Signal Setup
On the digital remote sensor transmitter, high
pressure side pressure and low pressure side
pressure can be measured and displayed.
IMPORTANT
The impulse line connection direction can be
changed.
For details on changing the impulse line
connection direction, see subsection 7.2.3.3,
Impulse Line Connection Orientation Setup.
When the transmitter is used with the impulse line
connection direction set to Normal (factory default
setting), each module is as follows.
Module 1: High pressure side transmitter (master)
Module 2: Low pressure side transmitter (slave)
When the transmitter is used with the impulse line
connection direction set to Reverse, each module is
as follows.
Module 1: Low pressure side transmitter (master)
Module 2: High pressure side transmitter (slave)
(1) Setting the pressure unit
To check or change the pressure unit, follow the
procedure below.
• Recalling and setting pressure unit parameters
(Pres 1 unit, Pres 2 unit)
Module 1 side pressure
Recall
parameters
[Root menu] → Detailed setup →
Sensors → Pres 1 setup → Pres 1 unit
Settings Available pressure units are shown
below.
Module 2 side pressure
Recall
parameters
[Root menu] → Detailed setup →
Sensors → Pres 2 setup → Pres 2 unit
Settings Available pressure units are shown
below.
inH
2
O@68degF
inHg
ftH
2
O@68degF
mmH
2
O@68degF
mmHg
psi
bar
mbar
g/cm 2
kg/cm 2
Pa
kPa
torr
atm
MPa
inH
2
O
mmH
2
O
ftH
2
O
hPa
(2) Setting the low limits (Pres 1 LRV, Pres 2
LRV) and high limits (Pres 1 URV, Pres 2
URV) of the pressure range
You can enter the low limits (Pres 1 LRV, Pres 2
LRV) and high limits (Pres 1 URV, Pres 2 URV) of
the pressure to set the measuring range.
To enter the low limit and high limit, follow the
procedure below.
Module 1 side pressure
Recall
parameters
[Root menu] → Detailed setup →
Sensors → Pres 1 setup →
Pres 1 LRV Module 1 side pressure range 0%
Pres 1 URV Module 1 side pressure range 100%
Module 2 side pressure
Recall
parameters
[Root menu] → Detailed setup →
Sensors → Pres 2 setup →
Pres 2 LRV Module 2 side pressure range 0%
Pres 2 URV Module 2 side pressure range 100%
7.2.3.2 Pressure Damping Time Constant
When the instrument is shipped, the module 1 side
pressure and module 2 side pressure damping time
constants are set at 2.0 seconds.
You can set the pressure damping time constants to
any values within the 0.00 to 100.00 range.
To change the pressure damping time constants,
follow the procedure below.
• Recalling the damping time constant parameters
(Pres 1 damp, Pes 2 damp)
Module 1 side pressure
Recall
parameters
[Root menu] → Detailed setup →
Sensors → Pres 1 setup → Pres 1
damp
Module 2 side pressure
Recall
parameters
[Root menu] → Detailed setup →
Sensors → Pres 2 setup→ Pres 2
damp
Enter valid time constants in the Pres 1 damp and
Pres 2 damp parameters.