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48
Calibration
PE, PC and Chlorophyll Calibration 1- or 2-Point
NOTE: The sensor guard must be installed and the calibration cup
must be used during calibration.
NOTE: Each channel of the sensor must be calibrated
independently. Calibration of the chlorophyll channel
does not set the calibration for the PC channel or the PE
channel. In addition, calibrating in RFU for a channel does
not automatically calibrate the µg/L measurement for the
same channel. The following calibration procedure must be
performed for each channel and each unit the user would
like to display
.
1.
Perform the “Calibration setup (pH, ORP, ISE, conductivity, turbidity,
and total algae sensors)” on page 33 . Ensure the sensor face is
clean and rinse the sensor 2-3 times with a small amount of 0
standard (clear deionized or distilled water is suitable).
NOTE: If completing a 2-point calibration, it is best to use the same
water source for the 0 standard that was used to prepare the
Rhodamine WT solutions.
2.
Fill the calibration cup to the appropriate level with 0 standard.
Immerse the sensors into the water.
NOTE: With the calibration cup empty (i.e. no sensor guard or
sensors), filling the calibration cup to line 1 will provide a
sufficient amount of solution for calibration.
3. Push the Cal key, then select either TAL-PC or TAL-PE , depending
on the sensor to be calibrated.
4.
Select the channel and units to be calibrated. Options for the TAL-
PC sensor are shown in
Figure 56 , while options for the TAL-PE
sensor are shown in Figure 57 .
NOTE: Review “Available TAL units” on page 44 for more details on
the units to use (RFU or µg/L).
5.
Select
Calibration Value
and enter 0.00.
6. Observe the actual measurement readings for stability (white line
on graph shows no significant change for 40 seconds), then select
Accept Calibration . “Ready for cal point 2” will be displayed in the
message area.
7. Select Finish Calibration to complete a 1-point calibration or
continue with the procedure to complete a 2-point calibration.
Figure 56 TAL-PC Calibration Options
Figure 57 TAL-PE Calibration Options