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Sampler Programming Options
6507programming.fm
Section 3
3.2 Sampler Programming Options
3.2.1 Timed-Cycle Mode
In the timed-cycle mode the sampler takes a sample on a fixed timed basis,
independent of the sample source flow rate. The interval between samples
adjusts 1–9999 minutes.
To initiate the timed-cycle mode place the Ext-Min toggle switch to the right,
MIN.
Table 3 Control Panel Features and Descriptions
Control Panel Feature Description
Power Button (ON)
Starts the sampler. Push the ON button once to turn on the power and twice to turn off
the sampler.
EXT-MIN (external/minutes)
Toggle Switch
Allows the selection of timed-cycle mode or flow proportional mode for samples.
Interval Between Samples
4-digit Thumbwheel Switch
Controls the minutes between sample events during the timed-cycle mode and
determines the number of contact closures desired before a sample event in the flow
proportional mode.
Note: The contact closures represent discrete and predetermined volumes of
wastewater.
Start-Reset Push Button
Starts the timing sequence. It resets all counts and cancels the sample program delay.
Note: The sample program will start automatically after the first time interval has elapsed,
if the button is not depressed.
Test Push Button
Initiates a sample event. When pressed the dipper arm will start the cycle and the sample
is counted. Initiates sample events when using the Pump Control Timer (Cat. No. 1662)
and the Discrete Kit (Cat. No. 16003).
Sampling Complete Light
Automatically turns on after the last sample is taken. The light stays on and the sampler
remains inactive until the Start-Reset push button is pressed.
Sample Countdown 4-digit LED
In the time-cycle mode, the 4-digit LED display indicates the number of minutes
remaining until the next sample. In the flow proportional mode, the display indicates the
number of received contact closures before the next sample. The display also indicates
the time remaining before taking the first sample when the Sample Program Delay feature
is used.
When using the optional 4–20 mA flow proportional unit, the Sample Countdown display
indicates the number of contact closures to be received before the next sample at
100 percent flow.
Sample Volume x 25 2-digit
Thumbwheel Switch
The number of times set on the 2-digit thumbwheel switch (01–99) are the amount of
cycles the dipper arm performs.
Note: The dipper arm takes a 25 mL sample each time it cycles.
Multiplex Dial and Samples per
Bottle/Bottles per Sample
Toggle Switch
Allows the sampler to operate as a composite sampler. A composite sample is a large
sample that consists of many smaller individual samples, all collected in the same
container. To operate the sampler in the composite mode, position the toggle switch to
Samples Per Bottle position. The total number of individual sample events that will be
collected in a single large container is selected from the black outer band labeled
Composite. Set the selector knob to the desired number of individual sample events. The
black outer band has a choice of 24, 48, 72, 144, 192 or 288 individual sample events
before the unit automatically stops sampling.
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