Burkert Flowave 8098, Руководство по эксплуатации

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SAW sensor – Maintenance
Type 8098 FLOWave L
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Flow rate K factor
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Teach-in by mass flow rate The current K factor is displayed.
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Start the teach-in procedure.
If the cut-off function is enabled, it is automatically deactivated.
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Wait for about 30 s: the device is averaging the mass flow rate.
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After 30 s, enter the average value of the mass flow rate that has been measured by the reference
flowmeter.
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The New settings are displayed.
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Save.
The new K factor is used.
If the cut-off function has been automatically deactivated, it is enabled again.
If the calibration fails, a message is displayed. Refer to chapter 24.10 Messages due to calibration or
simulation.
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Acknowledge the message to go back to the parent menu.
17.8.4 Calibrating the K factor by using a teach-in procedure
depending on a known mass
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Make sure the teach-in conditions are similar to those of the process.
To calibrate the K factor by using a teach-in procedure depending on a known mass, do the following:
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Prepare a tank which capacity you know. To make sure to get an accurate K factor, prepare the recom-
mended mass of liquid given in Table 40 or in Table 41 .
Table 40: Recommended mass for a teach-in procedure depending on a known mass
Diameter of the measurement
tube
Minimum flow rate at 4 m/s Recommended mass, in kg, to get
an accurate K factor
3/8" 11 l/min. 19 × liquid density
1/2" 17 l/min. 28 × liquid density
DN8 20 l/min. 33 × liquid density
Table 41: Recommended mass for a teach-in procedure depending on a known mass
Diameter of the measurement
tube
Minimum flow rate at 1 m/s Recommended mass, in kg, to get
an accurate K factor
3/4" 12 l/min. 19 × liquid density
1" 23 l/min. 38 × liquid density
1 1/2" 57 l/min. 95 × liquid density
2" 106 l/min. 177 × liquid density
2 1/2" 171 l/min. 285 × liquid density
3" 250 l/min. 417 × liquid density
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