Fluke RUSKA 7252, Руководство пользователя

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Local Operation
Menu
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4-11
Menu | Setup — Limits
The Menu | Setup | Limits menu is used to setup all of the limits in the system. The
pressure limits can be used to protect the device-under-test (DUT) from overpressure.
All limits are defined separately for each channel. Press the Mode key to switch between
two pressure channels. The Access code is common and is used for both channels.
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Figure 4-12. Channel A: Menu | Setup | Limits - Menu
High Limit
User defined Maximum pressure limit. This is often set just over the full-scale pressure of
the device under test (DUT) in order to protect the DUT. The Calibrator will then prevent
the pressure from exceeding the high limit. If the user enters a value greater than the user
defined limit, the unit will not accept the value and it will generate an error code
informing the user that they have entered a set-point that is greater than the high pressure
limit. In control mode, if for any reason the pressure exceeds the user defined limit, it will
change into the measure mode and again display an error message to the operator
informing them of the error that occurred.
This value can be edited using the rotary knob to highlight the High Limit. Then enter the
new value using the keypad. This will show up in the scratch pad on the lower portion of
the screen. Press the Enter key and the value for the high limit will be updated to the
value that was typed into the scratchpad.
Low Limit
User defined Minimum pressure limit. This is the same as the high limit except it is to
protect the DUT from low pressure limits.
Auto Vent
User defined maximum pressure that the Calibrator can reach prior to venting the test
port to atmosphere.