Hach-Lange SD900 User Manual - Manual (Page 28)

1. Select DIAGNOSTICS>SAMPLE HISTORY from the main menu to view the sample history.
2. The sample history shows the sample numbers, bottle numbers and brief result for each sample.
Select a sample from the list and push ENTER to view the complete details.
View the event log
View the event log to see details about the events that have been recorded.
1. Go to DIAGNOSTICS>EVENT LOG.
2. Select DISPLAY. The event log shows the date and event.
3. Select an event from the list, then push ENTER to see the complete details.
The top bar shows the event number and the total number of events in the event log. For
example, 01/80 will be shown for event number 1 and a total number of 80 events. The time/date,
event description and any additional data for the selected event is shown.
Event log information
The event log records information on these events:
• Power on—power was connected to the controller.
• Power fail—power was intentionally or unintentionally disconnected from the controller without first
turning the power off.
• Firmware update—a new version of firmware was installed.
• Pump fault—a fault occurred when the pump was operating.
• Arm faulty—the distributor arm did not move correctly.
• Low memory battery—the internal battery should be replaced.
• User on—a user turned the power on using the power key.
• User off—a user turned the power off using the power key.
• Program start—the sample program was started.
• Program resume—a program was resumed from the halt state.
• Program halt—a program was halted.
• Program complete—a program was completed.
• Grab sample—a grab sample was taken.
• Change tube—the maximum pump cycle counts have expired.
• SDI-12 timeout—indicates a communication error on the SDI-12 interface.
• High setpoint on—indicates that a user-specified high setpoint is activated, the measurement
channel of interest and the current measurement value.
• High setpoint off—indicates that a user-specified high setpoint is cleared, the measurement
channel of interest and the current measurement value.
• Low setpoint on—indicates when a user-specified low setpoint is activated, the measurement
channel of interest and the current measurement value.
• Low setpoint off—indicates when a user-specified low setpoint is cleared, the measurement
channel of interest and the current measurement value.
Erase the event log
Erase the event log after event details have been reviewed to reduce the number of entries that are
shown.
1. Select DIAGNOSTICS>EVENT LOG from the main menu to erase the event log.
2. Select ERASE.
3. Select YES to confirm the deletion.
View data from SDI-12 devices
If a sonde is detected on the SDI-12 interface and the sonde provides measurement data, the user
can view the current status of these measurements. Push STATUS or select STATUS in the main
menu.
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