Sontex Supercal 531 - 8.2.2 Supercal 531 with Standard Flow Sensors

Manual Integrator Supercal 531 06-06-2011 51
8.2.1.1 Response time and accuracy of the flow calculation
The time period during which the Supercal 531 carries out a new flow calculation is called re-
sponse time.
At the same time, the value of the current flow is updated
 on the LCD-display
 in the M-Bus protocol (if existing)
 by pulse- or analogue output (if existing)
8.2.2 The Supercal 531 in combination with standard (slow) flow
sensors
Example 1:
Flow sensor: Qn 10 m3/h, 10 litre/pulse
Configuration 531: requested precision 1% (100 pulses)
Minimum holding time 10 seconds
Maximum holding time 200 seconds
flow
[m3/h]
frequency
[pulse/sec]
period
[sec/pulse]
response
time [sec]
specification
parameter
precision
[%]
Qn 10 0.278 3.6 200
maximum period
b)
1.8
Qn / 2 5.0 0.139 7.2 200
maximum period
b)
3.6
Qn / 10 1.0 0.028 36.0 200
maximum period
c)
18.0
Example 2:
Flow sensor: Qn 10 m3/h ,10 litre/pulse
Configuration 531: requested precision 4% (25 pulses)
Minimum holding time 10 seconds
Maximum holding time 200 seconds
flow
[m3/h]
frequency
[pulse/sec]
period
[sec/pulse]
response
time [sec]
specification
parameter
precision
[%]
Qn 10 0.278 3.6 90
achieved precision
b)
4
Qn / 2 5.0 0.139 7.2 180
achieved precision
b)
4
Qn / 10 1.0 0.028 36.0 200
maximum period
c)
4