37
W3T331759 / WT.050.585.003.UE.IM.1014
MICRO/2000® AND DEOX/2000® MODULE
Standard Solution Method
1. Select the 1 Point calibration method in the calibration menu.
2. Create a 500 ml sample solution of a desired concentration within
the intended operating range.
3. Allow the sample solution to pump through the sample line for
aminimum of 10 minutes using the 3-way inlet valve (see Figure 4.3).
4. When the display stabilizes, enter the solution concentration (mg/l)
as the “SPAN” value.
4.4.2.2 Two point calibration:
1. Select the 2 Point method of calibration in the calibration menu.
2. Obtain 500 ml of demand free water.
3. Allow the demand free water to pump through the sample line for a
minimum of 10 minutes using the 3-way inlet valve (see Figure 4.3).
4. Once the reading is stable, enter this value as “ZERO”.
5.
Complete “Grab Sample Method” above for “SPAN” calibration.
This concludes the MICRO/2000® calibration.
4.4.2.3 Calibration tips
Because the analyser is on-line, the process should be observed for a few
moments before and while taking the sample to ensure that the process
does not deviate suddenly during sample taking and before initiating the
calibration. A substantial change in the process during calibration results
in an inaccurate calibration.
TO
METERING
PUMP
TO
METERING
PUMP
FLOW
FROM
CALIBRATION
SAMPLE
TO CALIBRATE
TO RUN
FROM
PROCESS
SAMPLE
STREAM
FLOW
Figure 4.3
Figure 4.3
Содержание WALLACE & TIERNAN DEOX/2000
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