Hach AS950 Fonctionnement page 16

3. Select an option.
Option Description
Sample- Sets the sampler to divide each sample between a selected number of bottles or put
Based multiple samples in one bottle.
Bottles per Sample (BPS)—Sets the sampler to divide a sample equally between a
selected number of bottles (e.g., when the sample volume is larger than the bottle
volume). Refer to item 2 in
to put a selected number of samples into each bottle (composite sampling). Refer to
item 1 in
When 1 BPS and 1 SPB is selected, the sample is not divided. Each bottle holds
one sample (discrete sampling).
To collect identical sets of composite samples or a composite sample that is larger
than the capacity of a single bottle, enter a value that is more than one for BPS and
SPB. For example, when 2 BPS and 2 SPB are selected, the sampler puts the first
sample in both Bottle 1 and Bottle 2. When the second sample is collected, the
sampler puts the sample again in both Bottle 1 and Bottle 2. When the third sample
is collected, the sampler puts the sample into Bottle 3 and Bottle 4. Refer to item 3 in
Figure
Time- Sets the sampler to put the sample(s) that are collected during a time interval in
Based each bottle. Options: 5 minutes to 24 hours (default: 1 hour). Duration—Sets the
time interval. First Bottle—Sets the first bottle used in the sampling program.
Note: If the Program Start setting is a date and/or time in the past (e.g., yesterday at 08:00), the first sample is
not put in the first bottle selected. The sampler distributor goes forward one bottle for each time interval between
the programmed start time and the actual start time.
When it is necessary for the bottle numbers (positions) to identify the time (or day)
the samples they hold were collected, use time-based distribution (time-switched
sampling). Refer to the expanded user manual on the manufacturer's website to
configure time-switched sampling.
Figure 3 Examples—Sample-based distribution
1 Two samples per bottle (SPB: 2, BPS: 1)
2 Two bottles per sample (SPB: 1, BPS: 2)
4.1.5.6 Select when the sampling program starts
Select when the sampling program starts after the RUN/HALT button is pushed.
1. Push MENU.
2. Go to Programming>Sample Programming>Program Start.
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Figure
Figure 3.
3.
3. Samples per Bottle (SPB)—Sets the sampler
3 Two samples per bottle and two bottles per
sample (SPB: 2, BPS: 2)