Fluke Calibration RUSKA 7615, Руководство пользователя

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RUSKA 7615
Users Manual
4-6
Cycle Modes
This mode of operation offers the fastest method of generating cyclic pressures and is
ideal for fatigue testing and extended proof pressure cycling. Initially the 7615 controls to
the maximum pressure. The pneumatic/hydraulic intensifier is then isolated from the
system and then driven to the end of its travel. The pneumatic/hydraulic intensifier is then
opened back to the system, and then cycled between its maximum and minimum travel
limits. The result is that pressure is cycled between the maximum pressure and whatever
minimum pressure that is achieve by the reduction in volume caused by the pump plunger
fully retracting. The 7615 then logs the maximum and minimum pressures that were
obtained by the pump plunger moving from the maximum to the minimum pump travel.
The operator has the ability to set the number of cycles, dwell time, and the pressure
tolerance. The maximum system pressure is automatically reset if it falls outside of the
pressure tolerance. For this reason, in high speed applications, it is recommended that the
pressure tolerance be set to a large value such as 3000 to 4000 psi.
Setting the Pressure Setpoint
The pressure set-point is the destination of the pressure control algorithm. It should be set
before entering control mode. The pressure set-point is set to zero at power-up and
whenever a pressure error occurs.
1.
The pressure set-point is set from the Main Menu (press Prev until the Main Menu
appears).
2. Use the numeric keypad to enter the new pressure set-point in the current pressure
units.
3. Press ENTER to accept the entry or press CLEAR to clear the numeric scratchpad.
Entering/Exiting Control Mode
1. The control mode is set from the Main Menu (press PREV until the Main Menu
appears).
2. Press CONTROL [F2] to enter control mode. ENTER must be pressed to confirm
entry into control mode. Note that any entry in the numeric scratchpad will also be
taken as the new pressure setpoint.
3. Press MEASURE [F1] to exit control mode. No confirmation is necessary.
Setting Slew Rate
Slew rate is the maximum rate of pressure change for the control algorithm.
1.
The slew rate is set from the Setup Limits Menu. From the Main Menu (press PREV
until the Main Menu appears) press Menu [F6] | Setup [F2] | Limits [F1].
2. Press the down arrow key until the label Slew Rate is highlighted.
3. Use the numeric keypad to enter a new value for Slew rate. Press ENTER to confirm.
4. Press PREV to exit the menu. Press CANCEL to return all edited fields to their
original values.