Using Gas Control & Replay Assist

This article introduces the workflow for Cropster's Gas Control/Replay feature. 


The following article and screenshots refer to Roasting Intelligence (RI5). 

In case you previously used Roasting Intelligence (RI4) we kindly invite you to check the newly improved features of RI5.

To upgrade to RI5, please download the Roasting Intelligence (RI5).

If Gas Control is currently in beta for your specific roast machine, and you haven't been invited to participate in the beta program for this integration, but you are interested in participating and testing the feature, please sign up here.

Beta means that the features are being tested with a select group of users to help us identify minor flaws under everyday conditions that we cannot reproduce internally. Therefore, it will be necessary that you share feedback with us and let us know whenever you come across some unexpected behavior.

Setting up the Gas control measurement

The following applies, if the roaster has already been successfully connected to the computer you have set up. If not, find more information about your machine's respective setup manual from our Connect your roast machine page, or our Helpdesk.

    If the Gas Control measurement is not shown at the RI's Preferences, the control measurement must be added before it can be set up.

    Cropster's Gas Control allows you to regulate the gas directly within the RI.

    To learn more about how to set up Gas control for your roast machine, please see below:

    1. Open the Roasting Intelligence (RI).
    2. Navigate to the gear-png-2 Preferences on the bottom left side of the screen. 
    3. Select the Machine tab and Configurations
    4. Scroll down to the Gas Control measurement and select the option representing your machine. Examples are included below for your reference:
    5.  Save your changes.

    Once you have set up a profile using Gas Control, the profile can also be replayed. This means Cropster automatically reproduces the gas settings applied during the creation of the profile based on bean temperature. 

    The Gas Control bar 

    The Gas Control bar is in the bottom-right corner next to the machine's measurements, and can be hidden by clicking theHide button, and shown by clicking the Screenshot 2024-01-10 at 10.10.20 Gas.
    Screenshot 2024-01-10 at 10.03.44

    If you previously used RI4 you might have already noticed the change regarding the +/- signs of the Gas Control bar which we would also like to draw attention to: 

    In RI5 the -/+ buttons have a reversed position. The - is on the top left and the + is on the top right side of the Gas control bar. 

    📚 Learn more about using Gas control (Giesen machines only)

    The Auto toggle button at the top of the Gas Control bar needs to be switched off (gray) to control the gas via the RI. When switched on (green), it goes into the Giesen Auto mode.
    Please also refer to Giesen's documentation for more information.

    Roasting with gas control

    Start your roast as you usually would in the RI. Now, instead of manually adjusting the gas supply at the roast control board, use the Gas control bar at the right-hand side of the RI.

    • For small gas adjustments, use the - and + buttons.
    • For big adjustments, use the Control bar by dragging and dropping the slider.
    • For instant adjustments, click the percentage values shown on the Gas control bar to instantly adjust the gas value accordingly.

    Replaying a roast 

    As soon as you have recorded one roast with the Gas control bar, set this roast as the reference to enable Replay assist.
    📚 Learn more about roasting with Cropster's Control & Replay Assist features and revising the Replay Assist preferences.

    Never leave the roast machine unattended while replaying a roast. Cropster replays the roast and captures the details, but you are always responsible for monitoring the roast machine to ensure it is operating safely.

    It is recommended not to enable auto start during replay and to closely monitor any early gas adjustments. This approach allows for immediate intervention in case any unexpected issues arise during the roasting process.

    Related content:

    Congratulations! You are now ready to use the Gas control and Replay assistant.

    Your opinion matters. If you have further questions, feedback, or concerns, please feel free to reach out by submitting a support ticket directly from