Yokogawa EJX930A - Manual (Page 41)

<6. Explanation of Basic Items>
6-2
IM 01C25R03-01E
6.3.1 Functional Block
Figure 6.2 presents the functional block of the
SENSOR transducer. The calculated values of
differential pressure, H-side static pressure, L-side
static pressure, external temperature, capsule
temperature, amplifier temperature, and flange
temperature (option code: /DG1) are assigned
to PRIMARY_VALUE, SECONDARY_VALUE,
TERTIARY_VALUE, EXT_TEMP_VAL, CAP_
TEMP_VAL, AMP_TEMP_VAL, and FLG_TEMP_
VAL (option code: /DG1) respectively. Measured
values output to the AI function blocks are selected
by the Channel parameter of those blocks.
6.3.2 Block Mode
The Block modes permitted for the SENSOR
transducer block are Automatic (Auto) and Out of
Service (O/S). The mode must be set to Auto under
normal operating conditions, and to O/S when
making changes to an important parameter. For
parameters that can only be changed in the Auto
and O/S modes, refer to the parameter list for the
SENSOR Transducer block in Chapter 9.
F0602.ai
PRIMARY_VALUE
(Channel1)
Sensor
signals
SECONDARY_VALUE
(Channel2)
TERTIARY_VALUE
(Channel3)
CAP_TEMP_VAL
(Channel6)
Pressure
/differential
pressure
calculation
Static
pressure
calculation
Historical
records
Equipment
information
Range
check
Range
check
Simulation
value
Adjust-
ment
Simulation
value
Adjust-
ment
Range
check
Damping
processing
Damping
processing
Damping
processing
Unit
check
Unit
check
H-side
static
pressure
L-side
static
pressure
Unit
check
Capsule
temperature
calculation
EXT_TEMP_VAL
(Channel4)
Range
check
Adjust-
ment
Simulation
value
Unit
check
External
temperature
calculation
AMP_TEMP_VAL
(Channel7)
Range
check
Unit
check
Amplifier
temperature
calculation
FLG_TEMP_VAL
(Channel8)
Range
check
Unit
check
Flange
temperature
calculation
RTD
signals
Figure 6.2 SENSOR Transducer Functional Block