Hach-Lange SD900 User Manual - Manual (Page 22)

Option Description
Intake tubing Tubing length: the length of the intake tubing from the strainer to the liquid sensor.
Range: 100–3000 cm or 3–99 ft. An accurate length is necessary to get an accurate
sample volume.
Intake tube type: the diameter and material of the intake tubing (¼ in. vinyl, 3/8 in.
vinyl or 3/8 in. Teflon).
Program delay Enable/disable: when enabled, the sampling program starts at a specified time or
number of counts. Date and time: the date and time when the program starts (24-
hour format). Counts: the number of counts or pulses from a flow meter when the
program will start (1 to 9999 counts). If the sample pacing is later set to time, the
program delay will be disabled.
Sample
pacing/collection Time based—Refer to Time based collection on page 21.
Note: When CTVV is used:
• The liquid sensor is always enabled.
• The sample distribution is composite.
• The run mode is non-continuous.
• The first sample is taken after the interval.
• Flow source is always 4–20 mA input.
Flow based—Refer to Flow based collection on page 21.
Sample distribution Deliver samples to all>YES
Each sample is delivered to all bottles. End after last: program stops after the last
sample (1–999). Continuous: program continues until it is stopped manually.
Deliver samples to all>NO
Samples are delivered to a subset of bottles (
Figure 14 ). Samples/bottle: the number
of samples to be collected in each bottle (1–999). Bottles/sample: The number of
bottles that will contain the same sample.
Liquid sensor Enable or disabled. If disabled, the sample volume must be calibrated by time.
Sample volume The volume of each sample in mL (1 gal = 3785.4 mL). If bottles/sample mode is
used, each bottle receives a full sample volume (10–10,000 mL). Make sure that the
sample volume does not exceed the bottle volume. Sample volumes are rounded to
the nearest 10 mL.
Intake rinses The number of intake tube rinses before a sample is collected (0–3).
Sample retries The number of sampling tries after a sampling failure occurs (0–3).
Site ID The name for the sampling location (up to 12 characters). The site ID is used as the
preset name if the program is saved.
Advanced sampling Goes to the advanced sampling menu. If necessary, configure the options in the
Advanced Sampling menu.
Run program The creation of the basic sampling program finishes. The sampler prompts the user
to start or cancel the program.
Figure 14 Two samples per bottle (left) versus two bottles per sample (right)
20 English