Hach 2100Q User Manual

Option Description
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.
8.6.2 Calibration standard overview
Refer to Table 1 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
1
20 NTU – –
Table 1 Calibration overview (continued)
Type of calibration Required standards
Formazin
(0–1000 NTU)
Typically
deionized or
distilled water
1
20 NTU 100 NTU 800 NTU
Degrees
(0–100 mg/L)
Typically
deionized or
distilled water
1
20 NTU 100 NTU –
SDVB
(0–1000 NTU)
Typically
deionized or
distilled water
1
20 NTU 100 NTU 800 NTU
Custom
(0–1000 NTU)
Typically
deionized or
distilled water
1
Select values
1
The water must have a turbidity <0.5 NTU to prepare the calibration standards.
English 15

Hach 2100Q Specifications

General

Range	0 - 1000 NTU
Resolution	0.01 NTU on lowest range
Detector	Silicon photodiode
Stray Light	< 0.02 NTU
Measurement Method	Nephelometry
Power Supply	4 AA alkaline batteries
Operating Temperature	0 to 50 °C
Storage Temperature	-20-60°C
Measurement Modes	Signal Averaging, Rapidly Settling Turbidity
Display	LCD
Accuracy	±2% of reading plus stray light from 0 to 1000 NTU
Light Source	Tungsten filament lamp