Flowlink 5.1 Software Instruction Manual - Isco
Flowlink 5.1 Software Instruction Manual - Isco
Flowlink 5.1 Software Instruction Manual - Isco
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<strong>Isco</strong> <strong>Flowlink</strong> <strong>5.1</strong> ® <strong>Software</strong><br />
Site Window - 4100/4200/6700<br />
3. Enter at least four data points in the table. The table can<br />
hold a maximum of 50 data points. If you have copied<br />
data points from another table or spreadsheet, select the<br />
top-left cell and press Control-V on your keyboard to<br />
paste the data from the clipboard.<br />
Each data point requires two values:<br />
• Level to flow requires a flow stream level and the<br />
flow rate that corresponds to that measured level.<br />
• Level to area requires a flow stream level and the<br />
cross-sectional area of the channel at that level.<br />
4. Select OK when the set is complete.<br />
Note: The conversion accuracy between points increases with<br />
the number of points entered. Keep in mind that you are defining<br />
the entire channel shape mathematically; select points that best<br />
represent any curves or variations. Compound shapes will need<br />
many data points.<br />
Maximum level<br />
Sampler Control -<br />
4100/4200<br />
Sampler Enable<br />
<strong>Isco</strong> instruments that build an internal flow conversion table to<br />
convert readings to flow rates require a Maximum Level. For<br />
most standard primary devices, this is information available<br />
from the manufacturer.<br />
However, you should not arbitrarily enter a value such as the<br />
largest value from a primary device specification sheet. Instead,<br />
use a value that is somewhat above the highest expected level for<br />
your actual situation, even if that level is less than the published<br />
maximum for a given primary device. This will improve the<br />
resolution of the conversion table. For example, if the channel is<br />
six feet deep, but the stream level rarely exceeds four feet,<br />
resolution can be improved if the points within the table were<br />
scaled over four feet instead of six.<br />
Caution: If the actual depth exceeds the entered maximum<br />
level, flow rates will not be calculated for those levels above the<br />
entered maximum level. The indicated flow rate will peak when<br />
depth reaches the maximum level and remain there until actual<br />
depth drops below the entered maximum head.<br />
This tab of the Site window displays the settings that flow<br />
measurement instruments use to control a connected sampler.<br />
These flow measurement instruments can control two sampler<br />
functions - sampler enable and sampler pacing.<br />
Set up the sampler enable by choosing one of the three options in<br />
the When to Enable box.<br />
• Always - sets the sampler inhibit line to always enable<br />
the sampler.<br />
• Never - sets the sampler inhibit line to always disable the<br />
sampler.<br />
• On trigger - controls the sampler inhibit line with a userdefined<br />
condition.<br />
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