Endress+Hauser Teqwave T, Руководство по эксплуатации

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Teqwave T Diagnostics and troubleshooting
Hauser 41
10.3 Checking the measuring device
The Functional test function on the local display is used to check the accuracy of the measu-
ring device. The operating tool can read in the results and output a test report in PDF format
(menu "Report" → "Functional test").
10.3.1 Performing the functional test
Incorrect test result
The use of tap water and the presence of air bubbles or variable environmental conditions
(e.g. variations in temperature or flow) can corrupt the test result.
‣
Clean the sensor before performing the test.
‣
Only use distilled or fully deionized water with a conductivity of <20 μ S/cm to test the
sensor.
‣
Boil the liquid for several minutes to prevent air bubbles occurring. Then allow the liquid
to cool to room temperature.
‣
Ensure constant environmental conditions.
1. Open the Settings menu → "Functional test".
 The functional test screen with the preparatory steps is displayed.
2. Follow the preparatory steps and then click Confirm to start the functional test.
 The status of the measurement preparations appears on the local display.
 The functional test starts automatically as soon as all the preparations for the mea-
surement have been implemented, and provided that the temperature is stable and no
process disturbances are present.
 The test result appears after a few seconds. The following results are possible:
– The message "Functional test successful" is displayed.
– The message "Functional test failed. Recalibration is necessary." is displayed.
3. Confirm the test results by clicking "Confirm" in order to save the results. If a recalibra-
tion is necessary, please contact the Hauser Sales Center.
Permitted deviations:
– Speed of sound: ± ≤ 0.5 m/s
– Density: ± ≤ 3.0 kg/m
3
10.3.2 Creating a functional test report via the operating tool
Prerequisites
• "Teqwave Mobile Viewer" operating tool is started and connected to the measuring device.
• Functional test has been performed on the measuring device.
1. Open the menu "Report"
→ "Functional test".
 The functional test appears under "Measurement point".
 The results of the functional test are displayed in graph and table form
2. Via the menu "Report" → "Create" save the report on the computer in PDF format →  37.
NOTICE