Setpoint ramping tutorial
Alicat controllers come equipped with a setpoint ramping feature that allows them to ramp up and/or down to changes in setpoint. With setpoint ramping, you can set a maximum speed at which a mass flow or pressure controller flows until the setpoint is achieved. Setpoint ramping can be performed using either the front display or serial commands.
Setpoint ramping is commonly used to ensure safety, by ramping up pressure or flow in a controlled, observable way. Setpoint ramping can also be configured to only apply to flow/pressure in a single direction for situations where you may need to quickly zero pressure or flow during an emergency.
To enable and edit the setpoint ramp functionality on your device, follow the instructions below.
Video tutorial
Step-by-step instructions (front panel)
- Press the bottom right button for “MENU” selection.
- Press the top left button for “CONTROL” selection.
- Press the top left button for “SETPT RAMP” selection.
- Press the top left button for “DELTA” selection.
- Use the up, down, and select digit buttons to set your desired delta.
- Press the bottom right button for “SET” selection.
- Press the top right button for “TIME” selection.
- Use the up, down, and select digit buttons to set your desired time.
- Press the bottom right button for “SET” selection.
- Press the top middle button for “TIME UNITS” selection.
- Use the up and down buttons to select your desired time units.
- Note: This will NOT change the rate, and it will automatically update the current rate to the newly selected units.
- Press the bottom right button for “SET” selection.