88
Operating Instructions - CPC4000
Industrial Pressure Controller
CPC4000
8.1.4 Barometric Reference Calibration
The Barometric Reference Transducer can be calibrated in exactly the same manner as the other
installed transducers as described in Section 10, Calibration.
8.1.5 Barometric Reference Specifications
Accuracy: 0.02% of reading. Uncertainties include all pressure effects and temperature effects over the
calibrated range and calibration stability for 365 days after re-zeroing.
Pressure Range: The standard Barometric Reference Transducer is calibrated from 8 to 17 psia.
Resolution: 6 digits
8.2 Additional Transducers (CPR4000)
A secondary transducer of any standard range, can be purchased as an option. In all other regards, the
add-on transducer will meet all of the specifications and operating parameters outlines throughout this
manual.
CAUTION: Typically, the pressure regulator in each instrument has limits of 50,
150, 1500 or 3,045 psig. If a transducer is placed into an instrument where the
transducer has a higher upper pressure range than the instrument’s regulator, the
maximum control limit will be limited to the maximum range of the instrument’s
regulator.
While any transducer will function in any instrument, the results may not always be optimum. For exam-
ple, if a 1 psi transducer is placed in an instrument that has a 1500 psi upper limit, the controlled pressure
stability may not be acceptable. Or if a 1500 psi transducer is placed in an instrument that has a 30 psi
upper limit, it will control very well, but be limited in resolution.
8.2.1 Secondary Transducer Installation
If the add-on transducer is of a higher full scale range than the existing primary transducer, then this
newer transducer becomes the Primary, and the existing transducer must be moved to the Secondary
Transducer slot. For complete installation instructions see Section 9.3 ,Transducer Removal.
8.3 Rack Mount Kit (CPX-A-C4-R)
A rack mount kit allows the customer to install a CPC4000 into a standard 19” instrument rack. It includes
a tray and a cover panel for the front. The instrument will rest on the tray and be retained by the panel.
Figure 8.3 – Rack Mount Kit
!
Caution