WIKA CPC6000 User Manual
Page 84
Automated Pressure Calibrator
CPC 6000
84
Mensor/WIKA Operating Instructions - CPC 6000
9.3.1 Transducer Removal
1.
VENT THE SYSTEM! Then turn off the power.
2.
Loosen the two captive screws on the front panel (Figure 3.3), and swing the panel open.
3.
Unscrew the thumb screw holding in the transducer (Figures 9.2.1B and 9.3.1).
4.
Apply a light inward pressure against the bottom of the transducer case, just below the range label,
while tilting the case upward to clear the clamp plate and screw head.
5.
Pull the transducer module outward, through the front opening.
CAUTION: There must be a transducer installed in the “Primary Transducer” berth
for the system to function properly. If the system is operated with the primary
berth empty the results will be unpredictable.
Removing a transducer disengages the electrical and pneumatic connections and seals off the pres-
sure on the pneumatic module. This permits the CPC 6000 to be turned on with the supply pressure
connected even with no transducers installed.
Each control channel has pressure control limits. Typically, the pump regulator
modules have a maximum limit of 15 psig and the solenoid valve regulator mod-
ules have limits of 50-150 or 1500 psig. If a sensor is placed into a control channel
where the sensor has a higher upper pressure range than the control module, the
maximum control limit will be limited to the maximum range of the control module.
While any sensor will function in any control channel, the results may not always be optimum. For
example if a 1 psi sensor is placed in a control module that has a 1500 psi upper limit, the control
stability may not be acceptable. Or if a 1500 psi module is placed in a control module that has a 30 psi
upper limit, it will control very well, but be limited in resolution.
CAUTION: When transducers are
replaced and the unit is rebooted, the
default parameters will be loaded. If
you are using custom settings they
must be reloaded after transducer
installation.
CAUTION: Do not install a high
pressure transducer into a low
pressure CPC 6000. It is acceptable
to install a low pressure transducer in
a high pressure instrument, but
control stability will be degraded.
CAUTION: Do not mix gauge and
absolute pressure sensors on one
control channel!
Figure 9.3.1 - Pneumatic Module,
Solenoid Valve Regulator
!
Caution
i
Notice
!
Caution
!
Caution
!
Caution