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3. CALCULATING "SPREADER CONSTANT"
1) For RATE displayed in 1 lb [1 kg] increments:
L = Length in inches [centimeters], of belt travel per 1 revolution of Encoder
GH = Gate Height in inches [centimeters]
GW = Gate Width in inches [centimeters]
English (US) : Metric (SI):
Spreader Constant =
311,040 Spreader Constant = [18,000,000]
(1 lb) L x GH x GW (1 kg) [L] x [GH] x [GW]
EXAMPLE: 1) L = 13 inches [33 cm]
2) GH = 7 inches [18 cm]
3) GW = 15 inches [38 cm]
English (US):
Spreader Constant (1 lb) = 311,040
13 x 7 x 15
= 311,140 = 228
1365
Metric (SI):
Spreader Constant (1 kg) = [18,000,000]
[33] x [18] x [38]
= [18,000,000] = [797]
[22,572]
NOTE: Verify Spreader Constant by performing Spreader Constant calibration
procedure in Appendix 7 before field application.
4. CALCULATING "METER CAL"
Product Density in lbs/cu.ft. [grams/liter] is entered as METER CAL.
NOTE: To increase the system accuracy when applying at low rates, use the
decimal shift feature as explained in CONSOLE PROGRAMMING.
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