
7ML19985CN01
Milltronics SF 500 - INSTRUCTION MANUAL
Page 51
mm
mmm
Oper
ation
Totalization
The totalization function is based on the internal rate (mass per unit time) signal
proportional to flow rate and load on the associated flowmeter. It is not affected by the
damping function (P080). The rate signal is sampled several times a second to accurately
count the mass of material conveyed. The count is held in the master totalizer used to
increment the internal totalizers and to produce a pulse signal for the remote totalizers.
The SF 500 provides several separate totalizer functions:
Internal totalizers
•
local display (totalizers 1 and 2)
•
verification totalizer (totalizer 3)
•
material test totalizer (totalizer 4)
•
batch total (totalizer 5)
External totalizers
•
totalizer outputs (remote totalizers 1 and 2)
To avoid totalizing material at flow rates below the low flow rate limit, the totalizer drop
out limit (P619) is set to a percentage of the design load. Below this limit, totalization
stops. When material flow returns to a rate above the drop out limit, totalization resumes.
Totalizer resolution or count value is set by the respective internal (P631) and external
(P638) totalizer resolution parameters.
e.g.: Internal
totalizer
1
Given:
P005 = 1 (t/h)
P631 = 4
Then:
totalizer count increments by 10 for each 10 metric tonnes registered
External totalizer 1
Given:
P005 = 1 (t/h)
P638 = 5
Then:
contact closure occurs once for every 10 metric tonnes registered
Содержание Milltronics SF 500
Страница 1: ...Instruction Manual September 2003 SF 500 milltronics ...
Страница 6: ...iv mmmmm Table of Contents ...