Hach-Lange 2100Q and 2100Qis User Manual - Manual (Page 16)

Note: Set Cal Reminder Repeat in the Calibration Options menu for periodical
calibration. Verify the calibration once a week.
Calibration options
The calibration options contain Calibration History, Calibration Curves,
Cal Reminder Repeat and Restore Factory Calibration.
1. Push the CALIBRATION key and then the UPand DOWN key.
Option Description
Calibration
History The calibration history shows a list of the times when the
meter was calibrated. Select a date and time to view a
summary of the calibration data.
Cal.Curve Select one of the calibration curves for calibration:
StablCal
® RapidCal ™ (0–40 NTU)
StablCal ® (0–1000 NTU)
Formazin RapidCal ™ (0–40 NTU)
Formazin (0–1000 NTU)
Degrees (0–100 mg/L)
SDVB (0–1000 NTU)
Custom (0–1000 NTU)
Cal Reminder
Repeat The meter will make an audible sound when calibration is
due. Select one of the following options for time interval
and push OK: Off, 1 d, 7 d, 30 d, 60 d, 90 d
Restore Factory
Calibration All user calibrations will be deleted. The original factory
calibration is restored.
Calibration standard overview
Refer to Calibration standard overview for the calibration standard
overview.
Table 1 Calibration overview
Type of calibration Required standards
StablCal ® RapidCal ™
(0–40 NTU)
– 20 NTU – –
StablCal ® (0–
1000 NTU)
– 20 NTU 100 NTU 800 NTU
Formazin RapidCal ™
(0–40 NTU)
Typically deionized or
distilled water
Footnote
20 NTU – –
Formazin (0–
1000 NTU) Typically deionized or
distilled water
Footnote
20 NTU 100 NTU 800 NTU
Degrees (0–100 mg/L) Typically deionized or
distilled water Footnote
20 NTU 100 NTU –
SDVB (0–1000 NTU) Typically deionized or
distilled water
Footnote
20 NTU 100 NTU 800 NTU
Custom (0–1000 NTU) Typically deionized or
distilled water Footnote
Select values
1 The water must have a turbidity <0.5 NTU to prepare the calibration
standards.
14 English