39
APPENDIX 2
CALCULATING "GRAN METER CAL"
Calculate initial GRAN METER CAL using the following formula:
1)
Find the cubic feet of discharge per 1 revolution of the Raven encoder.
L
= belt length traveled per 1 revolution of Raven encoder in inches.
GH
= gate height in inches
GW
= gate width in inches
Cubic feet of Discharge per 1 revolution of encoder:
= L x GH x GW = cubic feet
1728
EXAMPLE:
13" x 7" x 15"
= 1365
= .789 cu. ft./rev. of encoder
1728
1728
2)
Density = weight of 1 cubic foot of material
Density = D
3)
GRAN METER CAL for Rate in 1 Pound Increments:
GRAN METER CAL =
180 ÷ D x cu. ft./rev. of encoder x 10
EXAMPLE:
D (density)
= 65 lb/cu. ft.
cu. ft./rev.
= .789 (found in
Step 1
)
GRAN METER CAL
= 180
=
180
= 3.5 x 10 = 35
65 x .789
51.28
4)
GRAN METER CAL for Rate in 10 pound increments:
Multiply GRAN METER CAL found in
Step 3
, by 10.
EXAMPLE:
GRAN METER CAL found in
Step 3
= 35
10 x 35 = 350
350 = GRAN METER CAL Rate in 10 lb increments
5)
Perform this procedure for Sand, Salt, Product 1, and Product 2.
IMPORTANT:
Verify GRAN METER CAL by performing catch test before road
application.
Summary of Contents for DCS 700
Page 1: ...DCS 700 INSTALLATION AND SERVICE MANUAL ...
Page 3: ......
Page 4: ...Manual Rev B DCS 700 063 0171 711 7 99 016 0159 775 ...
Page 61: ...NOTES ...
