Factor
Pulse (sequence)
Number of strokes
(sequence)
Step-up*
1
1
1
2
1
2
25
1
25
99.99
1
99.99
1.50
1
1.50 (1 / 2)
1.25
1
1.25 (1 / 1 / 1 / 2)
Step-down**
1
1
1
0.50
2
1
0.10
10
1
0.01
100
1
0.25
4
1
0.40
2.5 (3 / 2)
(1 / 1)
0.75
1.33 (2 / 1 / 1)
(1 / 1 / 1)
Tab. 3: * Explanation of the conversion ratio
With a factor of 1
... 1 stroke is executed per 1 pulse
With a factor of 2
... 2 strokes are executed per 1 pulse
With a factor of 25
... 25 strokes are executed per 1 pulse
Tab. 4: ** Explanation of step-down
With a factor of 1
... 1 stroke is executed per 1 pulse.
With a factor of 0.5
...1 stroke is executed after 2 pulses.
With a factor of 0.1
...1 stroke is executed after 10 pulses.
With a factor of 0.75
...1 stroke is executed once after 2 pulses,
then 1 stroke is executed twice after 1 pulse,
and then again 1 stroke after 2 pulses etc.
Table of examples
If a remainder is obtained when dividing by the factor,
then the unit adds the remainders together. As soon as
this sum reaches or exceeds "1", the pump executes an
additional stroke. Therefore on average during the
metering operation, the resultant number of strokes pre‐
cisely matches the factor.
9.3.1.4
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48
Summary of Contents for Sigma 1 S1Cb
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