Hardy HI 4050, User Manual

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Troubleshooting 161
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To view this screen on your system, see Weight and Voltage Tests. The number for a load
sensor is based on the connections in the IT junction box. Check the installation sequence
in the box to determine which load sensor is number 1, 2 and so on. You can use the IT
functions from either the front panel or Web interface. If you do not have the optional IT
junction box, some of the options described below will not appear on either interface.
Stability Test
The Stability test lets you check the A/D Raw count and average. With the IT option, it tests
and reports for each load cell. The test sends the load cell data to the analog-to-digital
convertor and calculates the mean squared variation from the average reading, using 100
samples. The test passes if the mean squared variation is less than 5.0.
If the weighing system passes the stability test, the results show OK and the variation and
mean results are posted. FAIL indicates that the Mean Squared Variation is greater than
5.0 so the instrument is considered unstable. In that case, see the Troubleshooting Flow
Charts Section.
CAUTION Do not perform the Stability Test during production. The test activities can cause
incorrect readings.
ATTENTION Ne pas effectuer le test de stabilité lors de la production. Ces tests peuvent résulter
à des lectures incorrectes.