Manual Integrator Supercal 531 06-06-2011 52
Example 3:
Water meter: Qn 25 m3/h, 100 litre/pulse
Configuration 531: requested precision 4 % (25 pulses)
Minimum holding time 10 seconds
Maximum holding time 480 seconds
flow
[m3/h]
frequency
[Imp/sec]
period
[sec/pulse]
response
time [sec]
specification
parameter
precision
[%]
Qn 25 0.0694 14.4 360
achieved precision
b)
4
Qn / 2 12.5 0.0347 28.8 480
maximum period
c)
6
Qn / 10 2.5 0.0069 144.0 480
maximum period
c)
30
Example 4:
Water meter: Qn 25 m3/h, 100 litre/pulse
Configuration 531: requested precision 10 % (10 pulses)
Minimum holding time 10 seconds
Maximum holding time 300 seconds
flow
[m3/h]
frequency
[Imp/sec]
period
[sec/pulse]
response
time [sec]
specification
parameter
precision
[%]
Qn 25 0.0694 14.4 144
achieved precision
b)
10
Qn / 2 12.5 0.0347 28.8 288
achieved precision
b)
10
Qn / 10 2.5 0.0069 144.0 300
achieved precision
c)
48
For explanations to b) and c), please see point 8.2.1, pages 51
Attention:
When setting the parameter of the maximum holding time, attention has to be paid that this value is
higher than the duration between two volume pulses at mean flow of the connected flow sensor.
Otherwise the displayed flow and the displayed power will be zero.
The maximum holding time always has to be adjusted specifically to the application. If, later, the
heat meter is integrated into a controller application, it is important to check the setting of the
maximum holding time.
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