PART THREE - OPERATION
SECTION 4 - CONFIGURING THE ANALYZER
Rev. 2-300
Accu4™ Low-range Turbidimeter System
39
SET FILTER Time
1.
With the
screen displayed, use
Ø
Ø
key
to select the “SENSOR” line.
2.
Press
ENTER key
to display
.
3.
With the “SELECT UNITS” line selected, press
ENTER
key
to display a screen like
. Use
Ø
Ø
and
×
×
keys
to view all choices which are all equivalent:
•
NTU (Nephelometric Turbidity Units)
•
FTU (Formazin Turbidity Units
•
FNU (Formazin Nephelometric Units)
•
TEF (TruebungsEinhelt Formazin -- a German unit)
4.
With the desired choice displayed value, press
ENTER
key
to enter this selection.
A time constant (in seconds) can be set to filter or “smooth
out” the sensor signal. A minimum value of “0 seconds” has
no smoothing effect. A maximum value of “60 seconds” pro-
vides maximum smoothing. Deciding what sensor signal
filter time to use is a compromise. The higher the filter time,
the longer the sensor signal response time will be to a
change in the actual turbidity value.
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 the value. (Use
Ö
Ö
and
Õ
Õ
keys
for coarse adjust;
×
×
and
Ø
Ø
keys
for fine adjust.)
