High-Pressure Modular Controller
Pressure Measurement Settings
37
Safety Limits
The Product has user-configurable safety limits that protect the DUT from being
inadvertently over-pressured. See below for more information on each limit.
(
Setup>Control Setup>Safety Limits
)
Upper Limit
The upper limit is a safety limit that protects the DUT from being inadvertently
over-pressured. The upper limit is typically set just over the full-scale pressure of
the DUT. If a Setpoint greater than the user-defined upper limit is entered, the
Product does not accept the value and generates an error code. While in Control
mode, if pressure exceeds the user-defined limit, the Product changes to the
Measure mode and again shows an error message.
Lower Limit
This is the same as the high limit except it protects the DUT from low pressure
limits.
Auto Vent
This is the defined maximum pressure that the Product can reach prior to venting
the test port to atmosphere.
Pressure Measurement Settings
The Pressure Measurement menu contains all options and parameters related to
how the Product measures pressure. See the subsequent sections for more
information on each setting.
Unit and Custom Units
The Product offers a large selection of standard engineering units that can be
selected to satisfy a majority of calibration requirements. Table 14 lists the
standard units that come with the Product. To select a unit, touch
Setup>Measure Setup>Unit
and select the necessary unit.
Special calibrations can require an uncommon or special unit of measure. These
nonstandard units are referred to on the Product as Custom Units. For custom
units, touch
Setup>Measure Setup>Custom Units
. From this screen, enter the
necessary parameters for a maximum of four custom units.
