ULTRAFLOW® 54/34
70
Kamstrup A/S · Technical description · 5512-2464_A1_GB_08.2019
9
Calibrating ULTRAFLOW®
Calibration can be based on:
•
Pulses in standard mode.
•
Pulses in test mode.
•
Pulses using Pulse Tester type 6699-279.
•
On serial data with the meter in test mode (e.g. used in connection with NOWA).
9.1
Technical data for ULTRAFLOW®
ULTRAFLOW® emits flow-proportional pulses in accordance with
. If ULTRAFLOW® is connected to equipment
other than MULTICAL® calculators, for example a flow bench, it is recommended to use galvanic separation via Pulse
Transmitter or Pulse Divider.
q
p
Meter factor
[m³/h]
[imp/l]
0.6
300
1.5
100
2.5
60
3.5
50
6
25
10
15
15
10
25
6
40
5
60
2.5
100
1.5
Table 28. Output signal.
Output ULTRAFLOW®
Type
Push-Pull
Output impedance
~10 kΩ
Pulse duration
2…5 ms
Duration of pause
Depending on actual pulse frequency
Figure 59. Block diagram for ULTRAFLOW®.
Note: From start-up, it takes minimum 16 seconds until true flow reading has been reached and calibration can start. In
addition, the calibration duration must be at least 2 minutes to obtain the correct flow measurement, but a minimum
test time of 3 minutes is recommended. See paragraph
for further information about suggested
test points.