Hach 1950Plus - Run a Validation Procedure; Analyzer Adjustments

Section 4
Page 57
UVTOCCommissioning.fm Analyzer Adjustments
4.2.2 Run a Validation
1. Restart the analyzer and close the doors. Allow the analyzer to warm for
one hour.
2. Place the calibration tube into the calibration standard solution and run
Validation. The reported mg/L concentration reading should be
within ±2% of the calibration solution value.
3. If the concentration reading is correct, the analyzer can be put on-line.
4. Connect the sample line to the sample source. Set-up the local parameter
settings such as Auto-Cal, Auto-Clean, Relays, Analog outputs, etc.
5. If the concentration reading is not correct continue to Section 4.3.
4.3 Analyzer Adjustments
1. Place the zero line into the DI water, place the stream line and calibration
line into calibration standard.
2. Verify that the Flow Meter is indicating the approximate correct flow. This
reading is range dependant. Refer to Table 9 for the correct value.
3. Press the UP key twice from the main screen to view the CO
2
ppm gas
reading, then press ENTER to lock the screen.
Table 9 Carrier Gas Flow Rates and Response Times
UV 4195- / 6195-
1010/
3010
1020/
3020
1030/
3030
1040/
3040
1050/
3050
1060/
3060
1070/
3070
2000/
4000
Reactor carrier, cc/min.1 55 110 170 160 125 150 175 70
Sparger carrier, cc/min.
1
200 200 200 200 200 200 200 200
Response Time T90 @ 60Hz 10 8 8 12 12 12 14 10
CO
2
at Span mg/L 950 950 950 950 950 950 950 9500
UV 4195-
2010/
4100
2020/
4020
2030/
4030
2040/
4040
2050/
4050
2060/
4060
2070/
4070
2080/
4080
Reactor carrier, cc/min.
1
140 165 85 75 150 115 95 120
Sparger carrier, cc/min.
1
200 200 200 200 200 200 200 200
Response Time T90 @ 60Hz 10 14 20 13 12 13 16 15
CO
2
at Span mg/L 9500 9500 9500 9500 9500 9500 9500 9500
1
Flows are approximate at sea level.