Designed for testing valves that require a technician's expertise to determine the exact pressure at which the valve cracks.
Ideal for scenarios where the crack is determined when the first steady stream, or first continuous flow, of liquid media begins to emerge from the valve.
This features requires FieldLab Desktop version 1.24.0 or later. Download the latest version for free.
This feature requires FieldLab Firmware version 1.123 or later. You can update the firmware on a FieldLab by linking it to FieldLab Desktop software with the provided USB cable. Follow this link for Step-by-step instructions for updating FieldLab Firmware.
Before you can run a Test Mode, you must first Create a PSV/PRV Test Mode and add it to the FieldLab. For instructions, see:
On the crack & reseat detection field, be sure to select "Manual Marking of Crack and Reseat."
Full step-by-step instructions for creating a PSV/PRV Test are here (link will open in a new browser window).
Connect your FieldLab to your computer with a USB cable, or wirelessly, and add the test to it with FieldLab Desktop. For full instructions, see Add Test Modes to a FieldLab.
Make airtight connections between the FieldLab Pressure, a pressure source, and the PSV/PRV.
When you select START LOGGING, the gauge will begin recording the pressure applied to the valve and won't stop recording until you select STOP LOGGING.
When you select MARK CRACK, the FieldLab will save the reading for the valve pressure at the time of the crack.
You can mark the crack as many times as you want during the course of the test, and the FieldLab will save only the last one marked.
Review the data collected. If you are satisfied with the results, select ACCEPT.
You can also select RELOG to delete the results and run the test again.
The gauge will record the pressure applied to the valve for the amount of time that was set up when the PSV/PRV Test was created in FieldLab Desktop.
Once you've completed a test, you can import the Data Sets (test results) to FieldLab Desktop. Instructions for doing so are here: Import Data Sets from FieldLab Pressure to FieldLab Desktop.
Once Data Sets have been imported to FieldLab Desktop, you can export them in .csv format. Instructions for doing so are here: Export Data Sets from FieldLab Desktop.