Hach-Lange Sigma SD900 Portable - Manual (Page 46)

44
Sampler operation
4.7.5.1 View the event log
View the event log to see details about the events that have
been recorded.
Procedure:
1. Select DIAGNOSTICS > EVENT LOG from the main menu to view
the event log.
2. Select DISPLAY .
3. The event log will list the date and event. Select an event from
the list and press ENTER to see complete details.
The top bar will show the event number and total number of
events in the event log. For example, 01/80 will be displayed for
event number 1 and a total number of 80 events.
4. The time/date, event description and any additional data for the
selected event will be displayed.
4.7.5.2 Erase the event log
Erase the event log after event details have been reviewed to
reduce the number of entries that are shown.
Procedure:
1. Select DIAGNOSTICS > EVENT LOG from the main menu to erase
the event log.
2. Select ERASE .
3. Select YES to confirm the deletion.
4.8 Volume calibration
Samples can be collected with the liquid sensor enabled
(recommended) or disabled. When the liquid sensor is enabled, the
volume calibration is optional. When the liquid sensor is disabled,
the volume for samples, rinses and stormwater must be calibrated
manually.
When the liquid sensor is used for volume calibration, the sensor is
adjusted to accurately measure all programmed volumes. When
the sensor is disabled and the volume is calibrated by time, all
programmed sample volumes must be calibrated individually.
Verify calibrations by measuring the volume from a grab sample
(
section 4.8.3 on page 47 ). If calibration using the liquid sensor
does not give accurate volumes, the sensor can be calibrated
(
section 4.9.1 on page 48 ).
For typical applications, tap water can be used for volume
calibration. If the sample composition is significantly different from
typical water samples, calibrate the sampler using the liquid to
be collected.
Calibration cannot occur while a sample program is running. All
programs must be ended before calibration.