Hach 1950Plus Instrument Manual page 58

Uv process toc analyzer
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Section 4
Figure 28 Adjusting the Pressure and Flow
1.
Flow Adjustment Knob
2.
Flow Meter
Page 58
Analyzer Adjustments
4. Adjust the carrier flow (see
reading detailed in
Table
5. Allowing the reading to stabilize for 10 minutes and fine adjust the reactor
flow for the gas CO
ppm reading to the appropriate value in
2
6. Set the flow no lower than 30 cc/min. and no higher than 150 cc/minute
Ensure that the gas concentration remains in this range for a minimum of
5 minutes.
7. Enter the Primary Span calibration, and follow the prompted procedure.
Because the analyzer has already been subjected to the 100% KHP
standard, you may press ENTER repeatedly to skip the elapsing time and
advance to the final screen.
3.
4.
Figure 28
and
Figure
9.
Pressure Regulator Knob (Behind the Sparger Block.)
Pressure Gauge
29) to achieve the CO
2
Table
9.
UVTOCCommissioning.fm

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