High-End Pressure Controller
CPC8000
60
Operating Instructions - CPC8000
7.2.4 Rate Units
In the Setup [
] /[Sensor] tab there is a button labeled [Rate Units]. When selected, the side bar will
show a choice of time denominator units: Seconds [Sec] and Minutes [Min]. The currently selected time
denominator unit (Sec or Min) will have a blue background. Selecting minute [Min] or second [Sec] will
apply this time denominator to all rate functions in the instrument including [Rate Setpoint], and [Vent
Rate]. When this unit is change, all rate setpoints are adjusted so they are mathematically equivalent
to their current setting. For example, If the [Rate Setpoint] is set at 60 psi/min, then changing the rate
denominator unit to Seconds would convert the [Rate Setpoint] to 1 psi/sec.
Figure 7.2.4 - Rate Units
7.2.5 User Units
In the Setup [
] / [Sensor] tab there are several buttons with prefxes “User Units”. These are used to
setup the “base unit” and multiplier used to defne [User Unit 1] and [User Unit 2]. For [User Unit 1] and
[User Unit 2] the process is the same. Selecting the frst [User Unit #] will display a choice of [psi], [bar] or
[pascal] in the sidebar. Choosing one of these “base units” will form the basis of the equation that defnes
the [User Unit #] chosen. Immediately below the frst [User Unit #] button is the [User Unit #] Multiplier
button that indicates the current multiplier and when pressed will display a keypad in the side bar where
a new multiplier can be entered. These two choices are used to calculate the value of the [User Unit #]
by the following equation: User Unit = 1 Base Unit X Multiplier. For example if a unit is needed, that is not
currently available from the 40 choices, for instance tons per square meter (tsm), then the psi conver-
sion factor for this can be found and is: 1 psi = 0.703069 tsm. In this instance psi would be entered as
the base unit and 0.703069 as the multiplier. The new user unit associated with this base unit and multi-
plier would now be displayed when that User Unit is chosen in the main menu or on the Setup [
] /
[Sensor] / [Units] screen .
Figure 7.2.5 - User Units and User units Multiplier
Summary of Contents for CPC8000
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