PART THREE - OPERATION
SECTION 4 - CONFIGURING THE ANALYZER
Rev. 2-300
Accu4™ Low-range Turbidimeter System
43
SET FILTER Time
☞
Select SCALE 0 mA/
4 mA (low endpoint)
A time constant (in seconds) can be set to filter or “smooth
out” the output signal. A minimum value of “0 seconds” has
no smoothing effect. A maximum value of “60 seconds” pro-
vides maximum smoothing. Deciding what output filter time
to use is a compromise. The higher the filter time, the longer
the output signal response time will be to a change in the
measured turbidity.
NOTE:
The output filter time setting combines with the sen-
sor signal filter time setting, providing an additive
delay in output response to the actual reading.
1.
With the
screen displayed, use
Ø
Ø
key
to select the “SET FILTER” line.
2.
Press
ENTER key
to display a screen like
.
3.
Adjust the displayed value to the desired filter time, and
press
ENTER key
to enter it. (Use
Ö
Ö
and
Õ
Õ
keys
for
coarse adjust;
×
×
and
Ø
Ø
keys
for fine adjust.)
Select each output to be 0-20 mA or 4-20 mA.
1.
With the
screen displayed, use
Ø
Ø
key
to select the “SCALE 0mA/4mA” line.
2.
Press
ENTER key
to display
. Use
Ø
Ø
and
×
×
keys
to view both choices (0 mA or 4 mA).
3.
With the desired choice displayed, press
ENTER key
to
enter this selection.
