Hach-Lange Sigma SD900 Portable - Manual (Page 49)

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Sampler operation
4.8.3 Verify sample volume
To check the sample size after calibration use the Manual
Operation key to take a grab sample. Do not go back into
calibration to check the volume since the volume compensation is
reset to zero at the start of a calibration.
Procedure:
1. Press the MANUAL OPERATION key. Select GRAB SAMPLE .
2. Remove the outlet pump tube from the fitting on the sampler
and place the tube into a graduated cylinder. Place the intake
tube into the sample source or tap water.
3. If the liquid sensor is enabled, enter the volume that needs to
be verified. If the liquid sensor is disabled, enter the volume
specified in the program.
4. Press ENTER . The pump cycle will start (purge-sample-purge).
5. Compare the volume that was collected in the graduated
cylinder to the volume specified in step 3 . If the volume is
acceptable, the sampler is calibrated correctly. If the volume is
incorrect, repeat the volume calibration.
4.9 Controller settings
Use the system setup menu to change the following parameters:
• Date and time
• Communication
• Sampler base
• Liquid sensor calibration
• Display contrast
• Password
• Pump tube replacement reminder
Procedure:
1. Select SYSTEM SETUP from the main menu.
2. Select one of the available parameters, for example time/date
setup. Refer to Table 2 on page 35 for an overview of the
system setup menu.
3. Make selections or change values with the arrow keys. Use the
LEFT AND RIGHT ARROW keys to move the cursor left or right.
Use the UP AND DOWN ARROW keys to change the value.
4. Select another parameter from the system setup menu, or
press BACK to return to the main menu.