Issue/Rev. 0.2 (12/12) MN0M023 • Page 155
Device Functions Proline Promass 83 10 Block SPECIAL FUNCTION
10.2.3 Examples of setting parameters for batching processes
The two examples in the next section clearly show the effect of different entries and options in the
function group.
Example 1
The first example explains the parameter setting of various functions for carrying out batching and
illustrates how functions are affected when the batching quantity is changed.
The following batching is to take place:
• 2-stage batching with a batching quantity of 10 kg in total.
• Coarse batching quantity of 8 kg. Valve 2 opens at the start of the batching and closes when 8 kg
is achieved.
• Fine batching of 2 kg. Valve 1 opens at the start of the batching and closes (automatically) when
the batching quantity (10 kg) is achieved.
• Once 9 kg have been batched a batching progress message should be generated.
• Value-input should be entered.
A0004670
v = Flow velocity [m/s]
t = Time
V
1
= Valve 1 open
V
2
= Valve 2 open
m= Start batching/coarse batching, valves 1 (7220) and 2 (7222) open
n= Valve 2 (7223) closes, coarse batching quantity achieved
o= Batching progress message (7243)
p= Valve 1 (7221) closes, end of batching
x = After run quantity
The following parameter settings must be made:
– Select the unit for batching:
Function UNIT MASS (0401) page 17 = kg (kilogram)
– Select the measured variable for batching:
Function ASSIGN BATCH VARIABLE (7202) page 148 = MASS FLOW
– Enter the batching quantity:
Function BATCH QUANTITY (7203) page 148 = 10 [kg]
– Select the entry format:
Function BATCH STAGES (7208) page 152 = 2-stage
– Select the entry format:
Function INPUT FORMAT (7209) page 152 = VALUE-INPUT
– Quantity data for when the first valve should open:
Function OPEN VALVE 1 (7220) page 153 = 0 [kg]
(valve 1 closes automatically when the batching quantity is achieved = 10 [kg], display in
function CLOSE VALVE 1 (7221) page 153)
0
➀
➁
➂➃
v
t
x
V
V
2
1
8910
To Next Page
Loading...
