II. CALIBRATION PROCEDURE

Establish the desired application rate based on lbs. per 1000 sq. ft. (Divide lbs. per acre by 43.6 to convert to lbs. per 1000 sq. ft. or refer to conversion chart (Figure 2)).

CONVERSION CHART

Lbs/1000 sq.ft - to - Lbs/acre

PER 1000 sq.ft

P O U N D S

Tenths of a Pound

 

0

1

2

3

4

5

6

7

8

9

10

0

 

44

87

131

174

218

261

305

348

392

436

0.1

4

48

91

135

179

222

266

309

353

396

440

0.2

9

52

96

139

183

227

270

314

357

401

444

0.3

13

57

100

144

187

231

274

318

362

405

449

0.4

17

61

105

148

192

235

279

322

366

409

453

0.5

22

65

109

152

196

240

283

327

370

414

457

0.6

26

70

113

157

200

244

287

331

375

418

462

0.7

30

74

118

161

205

248

292

335

379

423

466

0.8

35

78

122

166

209

253

296

340

383

427

470

0.9

39

83

126

170

213

257

301

344

388

431

475

Lbs/Acre

Figure 2. Conversion Chart

A.After considering the site to be seeded (shape, soil texture, slope, obstacles, etc.), set your tractor ground speed (MPH). Select a gear setting that will provide the desired MPH and maintain a PTO speed between 500 and 600 RPM or as required for the degree of tillage desired. The ground speed can be verified by determining the time required to travel a distance of 200 ft. per the following speed/time chart:

Speed MPH

Time Required

Speed MPH

Time Required

Speed MPH

Time Required

 

per 200’

 

per 200’

 

per 200’

 

 

2 ½

55 sec

4 ½

30 sec

1

2 min 16 sec

3

45 sec

5

27 sec

1 ½

1 min 31 sec

3 ½

39 sec

5 ½

25 sec

2

1 min 8 sec

4

34 sec

6

23 sec

B.Fix the preliminary cam gauge setting for your selected seed using your best judgment.

C.Collect and weigh the seeder output for 1000 sq. ft.

a.Place seed in hopper with control lever closed.

b.Place empty container on one of the spouts to catch seed (To prevent loss of seed, block off other spouts).

c.Start motor

d.After waiting 15 to 20 seconds, open the control lever for the time required to travel 200 ft. that corresponds with the set speed (see speed/time chart).

e.Close the control lever after it has been open the exact time required.

f. Weigh the collected seed and multiply times 23 for total output and compare to the desired rate per 1000 sq. ft.

g.Adjust the cam gauge and repeat the procedure as required.

16