PART THREE - OPERATION
SECTION 5 - CALIBRATING THE ANALYZER
Accu4™ Low-range Turbidimeter System
Rev. 2-300
56
Entering Value
•
HOLD OUTPUTS:
Holds their present mA values.
•
XFER OUTPUTS:
Transfers to preset mA values.
•
ACTIVE OUTPUTS:
Responds to measured turbidity.
E.
With the desired choice displayed, press
ENTER
key
to enter this selection.
2.
Turn the sensor’s 3-way valve handle to the
CALIBRATE
position as shown by the label at the base
of the flow chamber (
Õ
Õ
points towards funnel hose).
3.
If the recommended isolation valve is used downstream
of the sensor OUTLET, open the valve to atmospheric
pressure to improve draining.
4.
Drain any remaining process from the sensor by re-
moving the funnel from its holder and lowering it below
the sensor height. When drained, replace funnel into
holder.
5.
Remove the flow chamber cover and baffle assembly
from the Model 8320 sensor flow chamber. Refer to
Figure 4-1 (standard sensor design) or Figure 4-2 (high
pressure sensor design) for assembly details.
6.
Wipe away all moisture from inside the chamber with a
clean, dry, soft cloth.
7.
Wipe the light source and detector windows clean using
a clean, dry, soft cloth.
8.
Note the factory-certified value on Cal-Cube
TM
assem-
bly, and insert the cube into the sensor in place of the
baffle assembly. Without replacing the flow chamber
cover, close the sensor enclosure door.
After the Cal-Cube
TM
assembly is properly inserted in the
sensor flow chamber, enter its factory-certified value.
1.
With the
screen displayed and the Cal-
Cube
TM
assembly inserted in the sensor, press
ENTER
key
to confirm. This active
screen ap-
pears showing the measurement reading.
