This article applies to: Field Gauge models equipped with a pressure sensor.

What you will need: 

  • A PC running Windows. 
  • FieldLab Desktop software version 1.24 or later installed on your PC. Download the latest version for free.
  • A Ralston Instruments Field Gauge equipped with a pressure sensor.
  • USB Cord, provided with your Field Gauge.

From the "FieldLab Desktop" menu, select "Preferences"


On the "General" screen, select the "Custom Units" button.


In the Custom Units dialog box, choose "New" for a new unit, "Edit" to edit and existing unit from the list.


In the Add/Edit Custom Unit screen, you have can edit the settings of your Custom Unit.

  1. Custom Unit Name: Enter the name of your Custom Unit here.
  2. Units the custom is based on: Select a standard engineering unit you would like your Custom Unit to be relative to.
  3. Base Units: Enter the low and high for the standard engineering unit your custom units will be based on.
  4. Custom Units: Enter the Low and High for your Custom Units, relative to the Base Units.
  5. Plot Button: Optional button that shows a visual representation of your Base Units and Relative Units.
  6. Save: After completing your Custom Units, Save the data and you'll be returned to the Custom Units preferences window.

Add Custom Unit to the Field Gauge


Power on the Field Gauge and connect it to the computer running FieldLab Desktop with the provided USB cord.


On the Devices screen in FieldLab Desktop, select the Field Gauge you wish to add custom units to.


Select the Settings tab.


In the Engineering Units module, select the Change button.


Select the custom unit you wish to add from the Custom Units Slot menu.


Select the Save Changes button.


Press the Units button on the Field Gauge to toggle units until you see the new custom unit appear.

That's it! You can now measure pressure in the custom unit you created.