Teledyne 6712FR manual Sampler Enable, Calculations when Using a 700 Series Flow Module

6712FR Refrigerated Sampler

Section 5 Extended Programming

These factors would be applied to the following equation.

(Greatest Total Flow Vol) / (Flow Pulse Vol)

10 ml for every __ pulses =

(Total Bottle Vol) / (10 ml per unit)

From the scenario we can apply the factors to the equation.

(666,667 gallons / 100 gallons)

10 ml for every 7.0 pulses =

(9,400 ml / 10 ml)

5.11.3Calculations when Using a 700 Series Flow Module

At high flow rates, a number below 7 would overfill the bottle. At low flow rates, a number greater than 16 would collect too little sample. Therefore, a value should be selected between 7 and 16 pulses.

The same principles discussed in Section 5.11.2 apply. However, the equations differ slightly because the flow module directly measures the stream’s flow volumes. The equation for the high end of the range is:

10 ml for every __ units =

(Least Total Flow Vol)

(Minimum Required Vol) / (10 ml per unit)

Using the same scenario the calculations would be:

SAMPLE VOLUME: 10 ml FOR EVERY

___ Gallons

10 ml for every 1667 gallons =

500,000 gallons

(3,000 ml) / (10 ml per gallon)

The equation for the low end of the range is:

10 ml for every __ units =

(Greatest Total Flow Vol)

(Total Bottle Vol) / (10 ml per unit)

The scenario would be applied as:

10 ml for every 709 gallons =

666,667 gallons

(9400 ml) / (10 ml per unit)

5.12 Sampler Enable

Therefore, a value should be selected between 709 and 1667 gallons for the given scenario.

Certain external instruments can enable (start) or disable (stop) a sampler by sending a signal to pin F of the sampler’s flow meter connector. Isco flow meters, flow loggers, and the Isco 1640 Liquid Level Actuator have a programmable sampler-enable feature that lets them enable or disable the sampler. You can define the condition (such as level, flow rate, pH, temperature, percent, rainfall, and I/O) or combination of conditions that need to be true in order to enable the sampler. Refer to Figure A-12in Appendix A for details on programming sampler enables.

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