Do not use variable volume, Flow based collection, Use counts for the flow source – Hach-Lange SD900 Refrigerated Sampler, SD900 AWRS Basic User Manual User Manual
Page 19: Use 4–20 ma input for the flow source
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 19.
Use 4–20 mA input for the flow source
on page 19.
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.
English 19