Create a custom Pressure Safety Valve / Pressure Relief Valve Test to run on a FieldLab

Create a custom Pressure Safety Valve / Pressure Relief Valve Test to run on a FieldLab

Create a new valve test and add it to a FieldLab Pressure Calibrator to perform tests on pressure safety and pressure relief valves.
This feature requires:
  1. FieldLab Desktop App version 1.24.0 or later installed on your PC. You can update from within the app if you already have it installed, or download the latest version for free.
  2. FieldLab Firmware version 1.123 or later installed on a FieldLab Pressure Calibrator. Learn how to update firmware.

1. In FieldLab Desktop, select "Test Modes"




2. Select the "New" button, and then select "PSV/PRV" from the dropdown menu.


3. Name the test mode

4. Select Crack & Reseat Detection


Auto Detection of Crack and Reseat
When you select auto detection, the FieldLab will automatically detect, display, and save the crack & reseat pressures. Ideal for scenarios where the crack and reseat happen so quickly that it's difficult for a human to determine the exact crack pressure.
Manual Marking of Crack and Reseat
With this setting, the person performing the test watches the valve and manually marks the crack and reseat events with the press of a button on the FieldLab.
It is recommended that you select the manual setting when testing liquid Pressure Safety Valves (PSV) or proportional relief valves (PRV).

5. Select the number of crack tests you want to perform on the PSV/PRV. 



6. Select acceptable crack range


When you select Simple Crack Range or Conditional Crack Range you have the freedom to define your own custom parameters.
When you select any of the following for acceptable crack range:
  1. ASME BPVC VIII.1 UG-134(d)(1)
  2. ASME BPVC VIII.1 UG-125(c)(3)
  3. ISO 4126-1
...specified standards will be applied to the test as defined by The American Society of Mechanical Engineers (ASME), or the International Organization for Standardization (ISO).

7. (Optional) Include a seat tightness test


If you are including a Seat Tightness Test, enter your desired settings for Length of test and Static Pressure Setting

When you include a Seat Tightness Test, the FieldLab will enable you to record in your test data that the Seat Tightness Test was performed, the pressure that was applied to the seal, the length of time the pressure was applied, and whether it passed or failed. The FieldLab Gauge interface will prompt you for PASS/FAIL status at the time of the test.


8. (Optional) Select Custom Data Fields to be included with the test data


For more information on creating and adding custom data fields, see Add Custom Data Fields to your Data Sets.

9. Save the new test mode

Next Steps

Add the test to your FieldLab(s).

In order to use the test you created on a FieldLab to test a valve, you must add it to a FieldLab. See Add Test Modes to a FieldLab for instructions.

Use your FiedLab to perform a valve test.




    • Related Articles

    • Create and Edit a Valve Test for your FieldLab Digital Pressure Calibrator: Quick Overview

      This article provides a quick overview. For more detailed, step-by-step instructions, see: Create a custom Pressure Safety Valve / Pressure Relief Valve Test for a FieldLab This features requires FieldLab Desktop 1.24.0 or later. You can update to ...
    • Create Custom Pressure Units

      Learn how to create custom pressure units on the FieldLab Desktop software and add them to your Ralston devices. 1. From the "FieldLab Desktop" menu, select "Preferences" 2. Select "Custom Units" 3. In the Custom Units dialog box, choose "New" for a ...
    • Add Custom Data Fields to a Test

      Note: You may need to perform free updates to your FieldLab and FieldLab Desktop in order to use this feature. Available for FieldLab Desktop versions 1.10.0 and newer, and FieldLab Pressure Calibrator firmware v1.117 and newer.   Instructions for ...
    • Pressure Safety Valve (PSV) Test Report

      Results of PSV Test in both CSV and PDF format.
    • Create a Custom Pressure Unit with a User-Defined Curve Fit

      Things you will need: The FieldLab Desktop app on your Windows computer. Version 1.40.4 or later. Update FieldLab Desktop to the Latest Version. A Ralston FieldLab Digital Pressure Calibrator, Field Gauge, or Process Meter In the FieldLab Desktop ...
    • Recent Articles

    • Install Quick-test Hose on a Ralston Hose Reel

    • Prevent kinks and hose jumping

      When Spooling Out When spooling the Quick-test hose out to your test area, if you are only going to spool out a portion of the hose on the reel, try applying the tension brake. The tension from the brake will prevent the remainder of the hose still ...
    • Save the nitrogen in your hose reel for the next test

      If you calibrate a high number of transmitters in a week, you definitely want to conserve your nitrogen. Especially when you're so far out in the field that going back to the shop isn't an option. Blowing off 100' of nitrogen in the test hose adds up ...
    • Store your Hose Reel between tests

      Each time you stow and transport your Hose Reel, reel the hose in as tightly as you can to the Hose Reel, and engage the locking pin. This will prevent the hose from uncoiling due to muscle memory and road vibrations during transport. Engage the hose ...
    • Results of Calibration Test

      Results of a Calibration test using the Ralston FieldLab and supporting Desktop software.