Graphical Analysis is available both as an installed application and as a Progressive Web App (PWA) on some platforms. (This is also true for our Spectral Analysis and Instrumental Analysis apps.)

The sensor connection process to a PWA includes an additional step compared to the installed application because you must give the browser permission to connect to the sensor before the app running in the browser can connect to it. The steps here describe that process for USB connection of a sensor to the PWA version of Graphical Analysis. (See also instructions on connecting sensors via Bluetooth.)

  1. Connect your USB sensor (or USB sensor interface) to your computer or Chromebook. If you are using a wired (BTA or BTD) sensor that requires an interface, connect the sensor to the interface now.

FOR CHROMEBOOKS ONLY
You may see a popup with a link to Connect to Android. DO NOT CLICK THIS LINK.

  1. Open a new Chrome (or Edge) browser window and enter the URL for the Progressive Web App (PWA) version of Graphical Analysis— https://graphicalanalysis.app.
  1. From the New Experiment dialog box, click or tap Sensor Data Collection.
    • For Spectral Analysis, click or tap Connect a Spectrometer.
    • For Instrumental Analysis, click or tap Connect an Instrument.
    • To access the new experiment box, click or tap File Menu, File menu button, and select New Experiment.
  1. From the Sensor Setup dialog box, click or tap USB, USB button.

Note: If using Spectral Analysis or Instrumental Analysis, skip Step 5.

  1. Click or tap the type of USB device you are using.
    • Go Direct USB—use for Go Direct sensors.
    • Go!Link—
    • Go!Temp—
    • Go!Motion—
    • LabQuest—use for LabQuest devices (e.g., LabQuest Mini, LabQuest 2, or LabQuest 3).
  1. From the “app wants to connect” dialog box, select your device, then click or tap Connect, Connect button.
    • If no device appears in the box, disconnect and reconnect the device.
    • If the box never comes up, make sure your browser settings for connection to HID and USB devices are not blocked.
  1. Once connected, Graphical Analysis will list the device details.

For Go Direct sensors, make adjustments to Sensor Channels. (Not applicable for all sensors.)

  1. Repeat Steps 4 – 7 to connect additional USB devices.
  1. Click or tap Done, , to proceed to data collection.

Related Links

Published: September 21, 2022. Updated: March 20, 2025.