134 Operating Instructions - CPC6050
Modular Pressure Controller
CPC6050
10.10 Head Pressure
The Head Pressure Application provides an automated way to calculate the head pressure
oset between a device being tested and the CPC6050 transducer, based on:
• Media: pneumatic
• Height: the dierence between the device under test and the transducers in the CPC6050
(Dierence = CPC6050-DUT)
• Gas Density: the density of the pressure media
• Gas Temperature
• Local Gravity
The Head Pressure application is placed under the password protected area of the operator interface to
safeguard against inadvertent activation. It is intended to be used to accurately measure the pressure at
an external source that is at a dierent elevation from the CPC6050 transducer sensing that pressure.
The four parameters are used to calculate the pressure that is a result of the dierent elevations. It should
not be used when calibrating CPC6050 transducers. The Head height should be set at zero before cali-
brating the transducers of the CPC6050.
i
Notice
The Head Pressure should not be active when calibrating CPC6050 transducers.
The Head height should be set at zero before calibrating the transducers of the
CPC6050.DierenceinheightbetweenthelaboratorystandardandtheCPC6050
during calibration should be factored into the uncertainty analysis.
Figure 10.10-A shows the Head Pressure pneumatic screen. The height, media density (Nitrogen or dry
air), media temperature and local gravity can be entered here based on the specic setup of the system.
Figure 10.10-A - Head Pressure, Pneumatic
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