6700 Portable Sampler User Manual - Isco
6700 Portable Sampler User Manual - Isco
6700 Portable Sampler User Manual - Isco
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Internal <strong>Sampler</strong> Enable<br />
Screens<br />
Figure 38, Extended Programming:<br />
Programmed <strong>Sampler</strong><br />
Enable on page 124.<br />
Figure 42, Extended Programming:<br />
Quick View; Programmed<br />
<strong>Sampler</strong> Enable on<br />
page 128.<br />
<strong>6700</strong> SAMPLERS<br />
87<br />
SAMPLER ENABLE<br />
<strong>Isco</strong> flow meters, flow loggers, and PAL 1101s have a programmable<br />
sampler-enable feature that lets them enable (start) or<br />
disable (stop) a program according to certain monitored conditions.<br />
For example these conditions can be level, flow rate, pH,<br />
temperature, percent, rainfall, I/O; or a combination of two conditions.<br />
These flow instruments enable or disable a sampler by sending a<br />
signal to pin F of the sampler’s flow meter connector. The instrument<br />
can enable or disable the sampler:<br />
At a specific time and date.<br />
When the pH, temperature, level, velocity, or flow rate passes<br />
asetpoint.<br />
When the reading is within a certain range or outside a certain<br />
range.<br />
When the rainfall rate exceeds a set point.<br />
The Model 1640 Liquid Level Actuator can also be used, as well<br />
as any other instrument that can ground the input to pin F.<br />
Grounding the input disables the sampler.<br />
A sampler running either a standard or extended program can<br />
rely on external input for enable or disable controls.<br />
The sampler’s extended programming screens let you program the<br />
sampler similar to the way devices controlling pin F are programmed.<br />
Input from a rain gauge, YSI Sonde, programmable I/O<br />
pin, or a 700 Series module may be used when programming<br />
enable conditions. Any combination of up to two conditions can be<br />
programmed.<br />
Check Enable Interval<br />
If programming the sampler to use a 700 Series module or YSI<br />
Sonde parameter for enabling, the sampler will request a Check<br />
Enable interval. The Check Enable interval allows the sampler<br />
to compare the parameter to the enabling conditions at a rate<br />
faster than the Data Storage interval. If the Check Enable interval<br />
is equal to or greater than the Data Storage interval, the<br />
parameter will be checked at the rate of Data Storage interval.<br />
Normally there are two considerations when selecting the Check<br />
Enable interval: power consumption and duration of the enabling<br />
event. This setting for battery powered samplers will require<br />
some degree of balance between the need to conserve power yet<br />
detect the enabling event before it has passed.
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