Burkert B0A1C2B1A4A0, Operating Instructions Manual, Page: 49 / 92

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48
English
SE58
L
Setting the low flow cut-off threshold. This function is useful to avoid that when the flow is close to zero, tiny
movements of liquid (due for example to vibrations of the pipe) can cause an increasing of the totalizers. The
allowed range for this function is 0-25% of full scale set. For most applications a value between 0.5 and 1% is
recommended.
This function enables an automatic verification of board’s coefficients. As the transmitter performs continuously
a large number of tests, we recommend to use this function only in presence of wide range of temperature.
Instead it is NOT recommended to use it when the device is used in metering applications (batch).
Enables the automatic change of scale. The meter may have two different working ranges in order to suit to
the variable process conditions. In order to get the best results out of this function it is important that the range
N.2 (Fs2), if enabled, is bigger than the range N.1 (Fs1). When the flow rate increases and reaches the 100% of
the full scale 1, then the meter automatically switches to scale 2. When the flow rate decreases again reaching
a value on scale 2 equal to the 90% of full scale N.1, then the active scale is 1 again. Allowed values for this
parameter: ON/OFF.
Notice: when the autorange is enabled, It’s not allowed to use the manual range change (POS. 6.6 see page
35 ). This function does NOT increase the accuracy of the measure; it aims to increase the resolution of 4/20
mA when the meter work at very low flow rates (typical case the flow rate of water distribution with daytime flow
much higher than the night flow). N.B: this function is disabled if the batching function is active
(POS. 4.2) Measure Filter CUt-off Threshold [Cut-off=% xxx]
AL3 [MFCUT]
(POS. 4.3) Auto CAlibration Verify Enable [Cal.verify=ON]
AL3 [ACAVE]
(POS. 4.4) Auto RaNGe Enable [Autorange=ON/OFF]
AL3 [ARNGE]
MENU 4 - MEASURE: ONLY MCP FUNCTIONS
Setting the low flow cut-off threshold, it is similar to the function in 4.2. The value of this function is NOT visible
on display but only with MCP command.
Measure Filter Cut-off Threshold 2 [MCP ONLY]
AL3
[MFCT2]
Reserved to the service
Reserved to the service
DYNamic Sample Analysis [MCP ONLY]
AL4 [DYNSA]
DYNamic Sample Time
[MCP ONLY]
AL4 [DYNST]
This function (INPut High Immunity filter) introduces a hardware filter to be used ONLY IN CASE OF ABSOLUTE
NECESSITY, when the measure is absolutely unstable or it is NOT possible to make the measure, and every
possible attempt to reduce or eliminate the noise do not give a positive result, with particular attention of
device ground connection. When this function is activated (HIINP = ON) the measure will be influenced by an
unavoidable error estimated around 1%
.
(POS. 4.5) High Immunity INPuts
[H.imm. inp.] AL4
[HIINP]