Hach-Lange SD900 Basic User Manual - Manual (Page 20)

Option Description
Collection period Specify the total collection period in hours and minutes (0:01–999:00).
Minimum sample volume If the flow volume is not sufficient to collect this minimum volume, the sample is
skipped (10–10,000 ml).
Do not use variable volume
1. Select or enter the values for the option.
Option Description
Take first sample Select whether the program starts immediately or after the first time interval has passed.
Flow based collection
Specify the flow source for flow based sampling:
• Counts—Refer to Use counts for the flow source on page 20.
• 4–20 mA input—Refer to Use 4–20 mA input for the flow source on page 20.
Use counts for the flow source
1. Select or enter the values for each option.
Option Description
Take sample every Collect samples at regular flow intervals, in counts (1–9999 counts).
Overrride time Collect a sample if the flow volume is very low.
Time The maximum time between samples (0:01–999:00). The timer starts again after each
sample is collected.
Take first sample The program starts immediately or after the first time interval.
Use 4–20 mA input for the flow source
1. Select or enter the values for each option.
Option Description
Select unit Selects the flow units to use.
Map 4 mA input Enter the flow rate that would agree with the 4 mA input.
Map 20 mA input Enter the flow rate that would agree with the 20 mA input.
Take sample every Enter the total flow after which the sample has to be drawn.
Override time Select enable to push a sample to be collected if the flow volume is unusually low.
Time The maximum time between samples (0:01–999:00). The timer starts again after each
sample is collected.
Sample volume Enter the volume to be collected per sample. If bottles/sample mode is selected, each
bottle receives a full sample volume (100–10,000 mL). This option is skipped if variable
volume is selected.
Restore the default settings
The restore option sets all of the program parameters to the default settings.
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