RP920A,B,C,D MODULAR PNEUMATIC CONTROLLERS
PRIMARY SENSOR
RESTRICTION
SWITCH
BLOCKED
M
PRIMARY
SENSOR
4
8
9 7 5
2
3
1
6
C5112
NO
CONNECTION
CCT816B
CALIBRATION UNIT
M
(BLOCKED RESTRICTION
ALTERNATE OK)
NO
CONNECTION
3
PRIMARY SENSOR
RESTRICTION
SWITCH
BLOCKED
PRIMARY
SENSOR
4
8
9
7
5
2
3
1
6
M
NO
CONNECTION
CCT816B
CALIBRATION UNIT
COMPENSATION
SENSOR
(BLOCKED RESTRICTION
ALTERNATE OK)
NO
CONNECTION
3
C5113
M
M
M
Fig. 11. RP920B setpoint (W
1
) CCT816B
Calibration Unit piping.
Initial Settings:
Setpoint
(
W
1
)
= 120°F (49°C) = 40% = 7.8 psi (53.8 kPa).
For Calibration Step 5:
Fig. 12. RP920B authority (A
c
) CCT816B
Compensation sensor at start = Compensation startpoint
(
W
)
c
Calibration Unit piping.
W = 60°F (15°C) = 50% = 9 psi (62 kPa)
c
For Calibration Step 9:
Primary sensor at start = 120°F (49°C) or 7.8 psi (53.8 kPa)
1
1.5
2
3
4
5
7
10
15
20
Min
0.5
TR
INSTALL 14003755-001
BARB FITTING AND APPLY
8.0 PSI (55 kPa)
For Calibration Step 10:
Desired BLP = 6.5 psi (45 kPa)
INTEGRAL
For Calibration Step 15:
MODULE
Primary sensor at full compensation =
C5114
160°F (71°C) = 10.2 psi (70 kPa)
Compensation sensor at full compensation =
Fig. 13. Integral module piping.
0°F (-18°C) = 5.4 psi (37.2 kPa)
Expected BLP = 2.5 psi (17 kPa)
160F
(71C)
120F
(48C)
PRIMARY SENSOR
FULL
COMP
SETPOINT
(W )
6.5 PSI
(45.5 kPa)
2.5 PSI
(17.5 kPa)
EXPECTED
BLP
1
0F
COMPENSATION
(–18C)
STARTPOINT (W )
c
COMPENSATION SENSOR
C5115
Fig. 14. Calibration example reset schedule.
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