Yokogawa EJX930A - Manual (Page 28)

<4. Diagnostics>
4-3
IM 01C25R05-01EN
Integral
Indicator
DTM
display
Status
group
Cause Countermeasure
Value and Status (Data Quality and Limit Status)
Differential
Pressure
(DP)
Static
Pressure
(SP)
External
Temperature
(ET)
DP % SP % ET %
AL.10
PRESS
P outside
limit
3 Differential
pressure
is outside
measurement
range limit of
capsule.
Check input
or replace
capsule when
necessary.
Value:
Measured value
Status:
Poor Accuracy and
Not Limited
(0x40)
Value:
Measured
value
Status:
Good and
Not Limited
(0xC0)
Value:
Measured value
Status:
Poor Accuracy and
Not Limited
(0x40)
Value:
Measured
value
Status:
Good
and Not
Limited
(0xC0)
AL.11
ST.PRSS
SP outside
limit
Static pressure
exceeds limit.
AL.12
CAP.TMP
CT outside
limit
Capsule
temperature is
outside range
(–50 to 130°C).
Use heat
insulation or
make lagging
to keep
temperature
within range.
AL.13
AMP.TMP
AT outside
limit
Amplifier
temperature is
outside range
(–50 to 95°C).
Value: Measured value
Status: Good and Not Limited
(0xC0)
Value: Measured value
Status: Good and Not Limited
(0xC0)
AL.14
EXT.TMP
ET outside
limit
External
temperature is
outside range.
Value:
Measured value
Status:
Good and Not Limited
(0xC0)
Value:
Measured
value
Status:
Poor
Accuracy
and Not
Limited
(0x40)
Value:
Measured value
Status:
Good and Not Limited
(0xC0)
Value:
Measured
value
Status:
Poor
Accuracy
and Not
Limited
(0x40) AL.15
EXT.TMP
OHM
outside
limit
External
temperature
sensor
resistance is out
specification.
AL.30
PRS.RNG
P over
range
4 Differential
pressure
exceeds
specified range.
Check input
and range
setting, and
change them
as needed.
Value:
Measured value
Status:
Good and Not Limited
(0xC0)
Value:
Hold value
Status:
Bad and
Constant
(0x30)
Value:
Measured value
Status:
Good and Not Limited
(0xC0)
AL.31
SP. RNG
SP over
range
Static pressure
exceeds
specified range.
Value:
Measured
value
Status:
Good
and Not
Limited
(0xC0)
Value:
Hold value
Status:
Bad and
Constant
(0x30)
Value:
Measured
value
Status:
Good
and Not
Limited
(0xC0)
AL.33
ET. RNG
ET over
range
External
temperature
exceeds
specified range.
Value:
Measured value
Status:
Good and Not Limited
(0xC0)
Value:
Hold value
Status:
Bad and
Constant
(0x30)