IM100CZ04-E4
7
2.
Set the value obtained in 1 above in the Gain setting section of
the instrument *.
Example: When the e
0
1.500 SUS630 diaphragm material’s
pressure sensor is used at 230
C.
e
1
= [1 + 0.13
10
-3
(230
150)]
1.500
e
1
= 1.516
Set 1.516 to the gain setting portion of the instrument.
*
For PCT-300, use the Gain Setter.
For PG500, refer to Gain setting in the Setup setting mode in the PG500
Operation Manual (IMR02F02-E
).
For HA430/HA930, refer to the Gain setting in Function block F21 in the
Engineering mode in the HA430/HA930 Quick Operation Manual
(IMR01N16-E
).
6.2 Correcting Indication Error due to the
Connection Cable Length
RKC Instrument’s resin pressure sensor is calibrated for the
standard cable length (5 m). Therefore, if the total length of the
pressure sensor connection cable connected to the intrinsically safe
circuit and non-intrinsically safe circuit side is other than 5 m, the
resin pressure sensor indication value can be corrected using the
instrument’s gain setting.
Correction procedure
1.
The rated output after the correction is calculated from the
following correction equation and correction factor.
e
1
’
= e
0
’/[1 + K
(L
5)]
e
0
’: Rated output of the resin pressure sensor
e
1
’: Rated output after the correction
K (Correction factor):
1.96
10
-4
/m (Standard specification type)
1.40
10
-4
/m (Explosionproof specification type)
L: Cable total length (m)
[However, when using RKC Instrument’s standard cable.]
2.
Set the value obtained in 1 above in the Gain setting section of
the instrument *.
Example:
Cable total length (L)
10 m
Rated output of the resin pressure sensor (e
0
’)
1.500
e
1
’
= 1.500/[1 + 1.96
10
-4
(10
5)]
e
1
’ = 1.499
Set 1.499 to the gain setting portion of the instrument.
*
For PCT-300, use the Gain Setter.
For PG500, refer to Gain setting in the Setup setting mode in the PG500
Operation Manual (IMR02F02-E
).
For HA430/HA930, refer to the Gain setting in Function block F21 in the
Engineering mode in the HA430/HA930 Quick Operation Manual
(IMR01N16-E
).
6.3 Correcting Indication Error when the
Cable of Another Company is Used
The nominal cross-sectional area of our cable conductor is 0.5 mm
2
.
If using a cable from another company, the resin pressure sensor’s
indication value can be corrected by correcting the gain setting of
the instrument.
Correction procedure
1.
The rated output after the correction is calculated from the
following correction equation and correction factor.
e
1
’ = e
0
’/[1 + 0.5/S
K
(L
5)]
e
0
’: Rated output of the resin pressure sensor
e
1
’: Rated output after the correction
S: Conductor nominal cross-sectional area (mm
2
)
K (Correction factor):
1.96
10
-4
/m (Standard specification type)
1.40
10
-4
/m (Explosionproof specification type)
L: Cable total length (m)
2.
Set the value obtained in 1 above in the Gain setting section of
the instrument *.
Example:
Cable total length (L)
10 m
Conductor nominal cross-sectional area (S)
0.75 mm
2
Rated output of the resin pressure sensor (e
0
’)
1.500 mV/V
e
1
’ = 1.500/[1 + 0.5/0.75
1.96
10
-4
(10
5)]
e
1
’ = 1.499
Set 1.499 to the gain setting portion of the instrument.
*
For PCT-300, use the Gain Setter.
For PG500, refer to Gain setting in the Setup setting mode in the PG500
Operation Manual (IMR02F02-E
).
For HA430/HA930, refer to the Gain setting in Function block F21 in the
Engineering mode in the HA430/HA930 Quick Operation Manual
(IMR01N16-E
).
When anti-explosion specifications are required, use a
cable with an allowable capacitance between the cable
wires of 0.1
F or less and an allowable inductance of
0.6 mH or less.
The allowable inductance could be exceeded if the cable is
wound, so do not wind the cable when using it.
6.4 Correcting Indication Error due to the
Safety
Barrier
A pressure indication error caused by the dispersion of our RZB-001
internal resistance value is within about 1 % of span. However, when
this error needs to be lessened further, make the correction, if
necessary. For this correction, the barrier correction factor B is used.
No correction is required when the barrier correction factor B is
“1.000.”
The barrier correction factor B is described on the
nameplate of the RZB-001.
Correction procedure
1.
The rated output after the correction is calculated from the
following correction equation and correction factor.
e
1
’’
= B
e
0
’’
e
0
’’: Rated output of the resin pressure sensor
e
1
’’: Rated output after the correction
B: Barrier correction factor
2.
Set the value obtained in 1 above in the Gain setting section of
the instrument *.
Example:
Barrier correction factor (B)
1.001
Rated output of the resin pressure sensor (e
0
’’)
1.500 mV/V
Rated output after the correction
e
1
’’
e
1
’’
= 1.001
1.500
e
1
’’ = 1.502
Set 1.502 to the gain setting portion of the instrument.
*
For PCT-300, use the Gain Setter.
For PG500, refer to Gain setting in the Setup setting mode in the PG500
Operation Manual (IMR02F02-E
).
For HA430/HA930, refer to the Gain setting in Function block F21 in the
Engineering mode in the HA430/HA930 Quick Operation Manual
(IMR01N16-E
).
