ULTRAFLOW®54(H)/(J)
KamstrupA/S∙TechnicalDescription∙5512‐1554_J1_GB_04.2018
51
9 Calibrating ULTRAFLOW
®
Calibration can be based on:
Pulses in standard mode
Pulses in test mode
Pulses using Pulse Tester type 6699-279
Serial data with the meter in test mode (e.g. used in connection with NOWA).
9.1 Technical data of ULTRAFLOW
q
p
Meter factor Flow at 125 Hz
[m³/h] [imp/l] [m³/h]
0.6 300 1.50
1.5 100 4.50
2.5 60 7.50
3.5 50 9.00
6 25 18.00
10 15 30.00
Table 17. Output signal
Output ULTRAFLOW
®
Type Push-Pull
Output impedance ~10 k
Pulse duration 2…5 ms
Duration of pause Depending on actual pulse frequency
Figure 47. Block diagram for ULTRAFLOW
®
.
Note: From start-up it takes minimum 16 seconds until true flow reading has been reached and calibration can start.
Furthermore, the duration of calibration must be minimum 2 minutes in order to obtain correct flow measurement
but we recommend a minimum test time of 3 minutes. See paragraph 9.3 for further details about suggested test
points.
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