Hach 1950Plus - IR Gas Calibration

Page 142
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Section 8
8.6.4 IR Cal
IR gas calibration should be performed only when you believe the IR is out of
calibration. The IR calibration procedure is covered in section 7.9 on
page 121.
Table 15 Default Bubble Thresholds
Analyzer Part Number Range in mg/L
Sparger Threshold
(bubbles/minute)
UV Threshold (bubbles/minute)
011664 UV Block 7121900 UV Block
Low Range
4195 - 1010 5 12 27 7
4195 - 1020 10 12 27 7
4195 - 1030 25 12 25 11
4195 - 1040 50 14 29 6
4195 - 1050 100 13 27 7
4195 - 1060 200 13 25 11
4195 - 1070 500 13 29 6
High Range
4195 - 2000 100 12 48 37
4195 - 2010 200 12 48 37
4195 - 2020 500 14 55 38
4195 - 2030 1000 14 54 39
4195 - 2040 1000 13 48 37
4195 - 2050 2000 13 48 37
4195 - 2060 5000 16 55 38
4195 - 2070 10000 13 54 39
4195 - 2080 20000 16 54 39
IR cal
IR cal 50.4C
7 ppm 0.25V