Hach-Lange SD900 Refrigerated Sampler, SD900 AWRS Basic User Manual - Manual (Page 17)

Set up a sampling program
A sampling program includes all of the parameters that are necessary to collect samples
automatically. Collect the samples at regular intervals or when the sampling program is complete.
1. Push MENU.
2. Go to PROGRAM SETUP>MODIFY ALL. The first screen is shown.
3. Select or enter the values for each parameter. Use the left and right arrow keys to move left or
right. Use the up and down arrow keys to change a value. Change the units if necessary (gal or
mL) with the arrow keys.
Option Description
Bottles Bottle quantity: the number of bottles in the sampler (1, 2, 4, 8 or 24).
Full BTL shutoff: Enabled/Disabled. If enabled, the controller checks for bottle
overflow conditions.
Bottle volume: the volume capacity of each bottle. Range: 50–65000 mL (0.01 -
17.17 gal) (1.7 - 2198 oz)
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 18.
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 19.
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 12 ). 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.
English 17