17
5.8 Test Duration
This value corresponds to the amount of time estimated to run a given sample size at a specified flow rate.
This value is only to show estimated test run time, which is when the word "Running" is displayed on the
Meter Test screen. The complete test sequence time will be longer due to the pretest stabilization period and
the post processing period.
This value is not configurable but derived from the two values of Flow Rate and Volume. When you choose
one or both of these parameters and press <Enter>, this value will automatically update.
If you have selected the option to change the Volume for each Flow Rate in the Prover Options screen, you
can change the test duration by changing the Volume (See section 4.1.4 Test Volume Selection for
Each Flow Rate).
If a test duration is less than the recommended 30 second minimum, an error message will appear. Tests
longer then 30 seconds typically result in more accurate results. This is the case with all meters, but most
significantly with Temperature Compensated meters because of the cyclical nature of the meter’s pulse
signal; much larger sample sizes may be necessary.
5.9 Selecting the Number of Test Repeats
You may configure the number of repeats for each Flow Rate by selecting the option for
Configurable Number of Repeats in the Prover Options screen (See section 4.1.5 for Configurable
Repeat of Meter Tests).
0 – This corresponds to one test with no repeats
1 – This corresponds to one test with one repeat; total 2 tests at that Flow Rate.
2 – This corresponds to one test with two repeats; total 3 tests at that Flow Rate.
If you do not select Configurable Number of Repeats, the number of repeats will be fixed and default to
the number entered in the Repeats box on the bottom right portion of the Set Prover Options screen.
5.10 Save, Close and Change
Refer to Test Setup and Proving, in the Help Directory for additional information on the various types
of tests in addition to testing meter accuracy.
Once you have completed the configuration of a test, you may run the test immediately by pressing the start
button, or you may save, close or change the test configuration. At the end of each test or once you select
Exit Test in the Run screen, the test is ended and the screen returns to the Test Configuration screen.
The test’s configuration information will still be current and easily modified before running another test.
Save (<Ctrl+S>)
- allows you to name the test configuration and save it to the default directory.
The save location can be changed if desired.
Close (<Ctrl+F2>)
– will close the current screen and return the Startup screen. Any settings for
a test configuration will be lost unless you save the test configuration.
Change (<Ctrl+F>)
– To modify a previously saved test file, use the Open/Run Test Configuration from the
File pull down menu. This will open a standard Window’s file search routine and allow you to open any saved
test file in any accessible directory. Once the file is opened, you can make and save changes to a new file or
initiate a test without saving the test configuration.
Dresser Roots Meters & Instruments preconfigured tests are protected. You cannot save them using
the same name in the same location. Either rename, relocate, or do both.
