PART THREE - OPERATION
SECTION 5 - CALIBRATING THE ANALYZER
Rev. 2-300
Accu4™ Low-range Turbidimeter System
55
5.3 CUBE CAL Method
(requires optional
Cal-Cube
TM
assembly)
Inserting
Cal-Cube
TM
Assembly
4.
Press
ENTER key
to display the active measurement
reading on the “CONFIRM ACTIVE?” output status
screen. When the reading corresponds to the actual
typical process value, press
ENTER key
again to return
the analog outputs and relays to their active states
(MEASURE screen appears).
This completes “PRIMARY CAL” calibration. The system is
now ready for normal measurement operation.
This calibration method requires you to first insert an
optional GLI Cal-Cube
TM
assembly into the sensor flow
chamber and then enter its known value. This unique turbid
glass cube has a factory-certified, 100% reproducible NTU
calibration value that is not affected by light, temperature, or
aging.
1.
Recommendation:
Before inserting the Cal-Cube
TM
assembly into the sensor, hold the analyzer analog out-
puts at their present values or transfer them to preset
values to ensure a safe condition for any connected de-
vices.
A.
Press
MENU key
to display
&21),*85(
7(670$,17
(;,7
.
B.
With the “CALIBRATE” line selected (shown in re-
verse video), press
ENTER key
to display
.
C. With the “SENSOR” line selected, press
ENTER
key
to display
.
D. Use
Ø
Ø
key
to select the “CUBE CAL” line and press
ENTER key
to display
. Use
×
×
or
Ø
Ø
key
to view the three states that the analog out-
puts (and relays) can be in during calibration:
