Great Plains NTA3007 Operator Manual - Manual (Page 100)

96 NTA907 or NTA3007 Table of Contents Index Great Plains Manufacturing, Inc.
166-371M Table of Contents Index 2012-07-02
37. Wipe all the material off the flanges around the
meter doors, on the chute, and capture that material
in the calibration bag.
38. Accurately weigh the calibration bag plus material. If
you set a “tare” on the scale, the reading is the
sample net weight, so skip step 39.
39. Subtract the empty container weight to determine
the application rate for
1 ⁄
10
hectare (or
1 ⁄
10
acre).
40. Press the Stop softkey on the monitor
and enter the sample net weight (SampleWeight).
The monitor responds with a Calibration Constant.
Push the Save softkey to accept this
value.
Calibration Close-Out
41. Wipe the calibration door seals. Close the calibration
door(s).
42. Re-install any removed final Range gears.
43. Remove and store the calibration crank.
Servo Seeding Example (step 39)
Net Weight
Metric U.S. customary
TotalWeight
for bag plus sample 23.26 kg 22.76 lbs.
BagWeight 1.52 kg 3.36 lbs.
SampleWeight 23.26 - 1.52
= 21.74 kg 22.76 - 3.36
= 19.4 lbs.
SampleWeight TotalWeight BagWeight – =