Azbil MCB10A, User Manual

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Operation using the data setting device Azbil Corporation
5-16 Model MCB10A
5-5-5 : Setting auto spike cut
This function eliminates steep noise spikes (spike noise) in the flow rate. Noise
generated when foreign matters collide with electrode is an example of the spike
noise.
When the flow rate changes sharply, this function holds the outputs according to the
damping time. Generally the spike noise occurs in a few milliseconds and settles
down within the output holding time and the outputs are not affected. For ordinary
flowrate changes, the output responds after the damping hold time.
It is not recommended to use this function for applications requiring high response
and performance, e.g., the function should not be used when a pump frequently
generates pulsation.
Electromagnetic
flowmeter
MCB
Output
(not affected by noise)
Spike noise
Figure 5-2 Auto spike cut output characteristics
Set the auto spike cut in accordance with the following procedure.
Step Procedure Screen
1 The screen at right is a screen display
example in MEASURING MODE
(measurement state).
Press the MODE key.
20.0 %
01.94 m
3
/h
00069401
2 The OPERATOR'S MODE screen appears
for approx. two seconds and then the damping
setting screen appears.
20.0 %
* OPERATOR'S
MODE
20.0 %
* DAMPING
005.0 s
3 Press the
h
key four times to display the
screen shown on the right.
20.0 %
* SPIKE CUT
OFF
4
Press the
g
key to move the cursor to the OFF
position.
20.0 %
* SPIKE CUT
OFF