Hach 1950Plus Instrument Manual page 59

Uv process toc analyzer
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Figure 29 Bottom View of the Pump Bracket Assembly
1.
Flow Adjustment Knob
2.
Pressure Gauge
3.
Pressure Regulator Knob (Turn clockwise to decrease pressure. Turn counter-clockwise to increase pressure.)
Note: To access the pressure regulator, carefully open the pump module without pulling any tubing off of the barb fitting.
UVTOCCommissioning.fm
8. Place the sample stream line back into DI water.
9. Allow the reading to stabilize to lower than 30 ppm CO
10. Enter the Calibration/Primary Zero menu and follow the
prompted procedure.
11. Visually ensure that the CO
already analyzed DI water, press ENTER repeatedly to skip the elapsing
time and advance to the final screen.
12. Go back to the Main screen.
13. Connect the sample stream line to the sample source.
14. Set-up the local parameter settings such as Auto-cal, Auto-clean, Relays,
Analog outs, etc. as described in the instrument manual.
1
ppm is stable. Because the analyzer has
2
2
3
Section 4
.
2
Front of
analyzer.
Page 59
Analyzer Adjustments

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