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<blockquote data-quote="Bama" data-source="post: 196009" data-attributes="member: 1184"><p>This method of calibration is very easy and can be used to check and fine-tune a sprayer quickly, but it does require driving a distance in the field. Before calibrating the sprayer with any method, you must check nozzle output for uniformity. Correct any nozzles that vary in flow rate by more than ±5 percent. Also check that the pressure gauge is reliable and the pressure is properly set. Then proceed as follows: </p><p></p><p>For broadcast application, determine the distance, in inches, between nozzles. For banded applications, determine the band width in inches. For directed applications, collect the discharge from all nozzles per row. </p><p>From the table, determine the distance needed to equal 1/128 acre. Mark this distance off in a field you will be spraying. </p><p>Measure the time (in seconds) needed to drive the required distance at normal operating speed with all equipment attached and the spray tank 1/2 full. </p><p>Collect the discharge from all nozzles directing spray to one row for the time measured in step 3. All chemical added together in ounces is gallons per acre. If broadcast spraying is being done, the ounces collected from one nozzle is gallons per acre. </p><p></p><p></p><p>Table - Calibration distance, ounces to gallons, 1/128 acre.</p><p></p><p>---------------------------------------</p><p> Nozzle Spacing Course Distance</p><p>or Band Width (inches) (feet)</p><p>---------------------------------------</p><p> 8 510</p><p> 10 408</p><p> 12 340</p><p> 14 291</p><p> 16 255</p><p> 18 227</p><p> 20 204</p><p> 22 185</p><p> 24 170</p><p> 26 157</p><p> 28 146</p><p> 30 136</p><p> 32 127</p><p> 34 120</p><p> 38 107</p><p> 40 102</p><p>---------------------------------------</p></blockquote><p></p>
[QUOTE="Bama, post: 196009, member: 1184"] This method of calibration is very easy and can be used to check and fine-tune a sprayer quickly, but it does require driving a distance in the field. Before calibrating the sprayer with any method, you must check nozzle output for uniformity. Correct any nozzles that vary in flow rate by more than ±5 percent. Also check that the pressure gauge is reliable and the pressure is properly set. Then proceed as follows: For broadcast application, determine the distance, in inches, between nozzles. For banded applications, determine the band width in inches. For directed applications, collect the discharge from all nozzles per row. From the table, determine the distance needed to equal 1/128 acre. Mark this distance off in a field you will be spraying. Measure the time (in seconds) needed to drive the required distance at normal operating speed with all equipment attached and the spray tank 1/2 full. Collect the discharge from all nozzles directing spray to one row for the time measured in step 3. All chemical added together in ounces is gallons per acre. If broadcast spraying is being done, the ounces collected from one nozzle is gallons per acre. Table - Calibration distance, ounces to gallons, 1/128 acre. --------------------------------------- Nozzle Spacing Course Distance or Band Width (inches) (feet) --------------------------------------- 8 510 10 408 12 340 14 291 16 255 18 227 20 204 22 185 24 170 26 157 28 146 30 136 32 127 34 120 38 107 40 102 --------------------------------------- [/QUOTE]
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