Teledyne manual 3 Event Paced Sampling, 6712FR Refrigerated Sampler Extended Programming

6712FR Refrigerated Sampler

Section 5 Extended Programming

conditions becomes true. The default distribution setting for event-paced sampling is sequential (each time an event occurs, the sampler takes one sample, placing it in one bottle). However, any distribution setting may be used.

If you have programmed multiple conditions, and more than one condition comes true at the same time (within your measurement interval), one sample will be taken and all conditions that caused the event will be noted on reports.

Table 5-3uses rate of change for the event condition (see step 7). This feature enables the event condition under specific cir- cumstances.

In the example below, a rate of change is set so that if the level rises more than one foot in a two hour time period, the event con- dition would be enabled and a sample taken.

In determining if the rise occurs in this example, the sampler looks back at the previous two hour time period to see if there is a rise of more than one foot between any valley (low point) or peak (high point) within that time period.

Once the condition becomes true (a rise of more than one foot is noted), the event condition is enabled. It will not be enabled again unless the condition becomes false, and then true again, within the two hour time window.

In event pacing, up to three different rate of change event condi- tions can be programmed (for two-part programs, a total of six rate of change event conditions can be defined, three for each part).

5.9.2Event Paced Sampling This example uses a sampler with an attached 730 Bubbler Flow Module, Rain Gauge, and an SDI-12 sonde at address 5 with four parameters.

1

	Table 5-3 Event Paced Sampling
UNIFORM TIME PACED	Select EVENT PACED.
FLOW PACED
EVENT PACED
NONUNIFORM TIME

2

3

EVENT01:

RAIN LEVEL FLOW

TEMP5 pH5 SP_CO5

DO5 DONE

“LEVEL” CONDITION:

SET POINT

RANGE

RATE OF CHANGE

Select the parameters that will trigger the event. Use the arrow keys to move through the parameters.

To define the first event for this example, select LEVEL.

Choose SET POINT.

4

“LEVEL” SET POINT:	Enter a set point of 1 foot.
1.000 ft
( 0.001 - 30.00)

5-13