26
ROOTS
®
Model 5 Prover Software Manual
9.
CONTROLLER DIGITIZER ERROR - This message appears if the digitizer varies by more than a
few digits from the calibrated value. If the computer that was used to calibrate a specific Model 5
Prover is used with a different Model 5 Prover, this error message may appear. Make certain that
the serial numbers of the Master Meter(s) match the serial numbers displayed when the Model 5
Prover computer program is first accessed. If this is true, try recalibrating the digitizer.
10.
PRESSURE TRANSDUCERS HAVE NOT STABILIZED - This message will appear any time an
attempt is made to restart a test before the Master Meter has had a chance to stop rotating.
Wait for a short period of time and the message will clear automatically. Other more rare
occasions for this error message to remain on the screen are as follows:
a
. When testing in the pipeline, a valve is leaking.
b.
If there are strong winds with no pressure lines connected.
c
. The pressure line is pointed into the wind.
d.
There is a shorted triac in the blower control circuitry (the blowers remain on
whenever power is connected to the Prover).
11.
METER CABLE CONNECTED TO WRONG MASTER METER - This message may appear
briefly when a test is started. As long as it clears it should not cause concern. If this
message appears and does not clear, the Master Meter Cable is not connected to the
proper Master Meter that was configured for the current test.
7.3 The Meter Test screen
The meter test is initiated after the test has been configured properly and the automatic system check has
been validated. This screen shows the system readouts as well as specifics on the Meter sensors. The test
sequence will initiate once the temperature is considered stable and the flow rate has reached the set point.
Pressing <Ctrl+F7> bypasses the software's testing of the rate of temperature change of the Master Meter
temperature probe. The range of temperature deviation is set on the Set Prover Options screen (see 4.1.10
Digitized Counts and °F/Minute). The current mode of the test in progress can be verified by the three
indicators at the middle left portion of the Meter Test screen: Temp Stable, Test Run Started, and Test Run
Completed. Once the pretest criteria has been met (stable temperature and set flow), the Temp Stable
indicator will turn green. This will correspond to the light on the Field Meter Junction Box turning on,
signifying valid data. Once the test starts, the Test Run Started indicator will turn green and the light
on the Field Meter Junction Box will start blinking.
Refer to Temperature Stability Settings in the Help Directory for more information.
For optimal results, the system must not be disturbed during the pretest and testing portion of the
proving cycle. There are four buttons at the bottom right of the screen that are used to control
the testing process:
• Stop Test – This will stop any current test but will also allow you to reinitiate the testing with
the Restart Test command.
• Restart Test – This will allow you to restart the test sequence.
The test will start at the flow rate selected in the Test Flows box at the bottom of the screen and will
continue the test sequences for all test points at and below the selected test point.
