Why does Hach 2100Q show 'RST: Average value'?
If the Hach Measuring Instruments displays 'RST: Average value!', it means solids are settling too slowly, and the reading mode isn't suitable for the sample. Select 'Normal' or 'Signal Average' reading mode.
What to do if Hach 2100Q Measuring Instruments shows 'Low Battery'?
If the Hach Measuring Instruments displays 'Low Battery!', replace the batteries with new ones. Alternatively, if you're using rechargeable batteries, connect the USB/power module.
Why does my Hach Measuring Instruments say 'Overrange'?
If the Hach Measuring Instruments displays 'Overrange!', it means the turbidity is too high, likely from calibrating with RapidCal only. To fix this, calibrate the upper range or dilute the sample.
What to do if Hach Measuring Instruments says 'Close lid and push Read'?
If the Hach Measuring Instruments shows 'Close lid and push Read', it means the lid is open or the lid detection failed. Ensure the lid is closed during reading and re-read.
How to fix 'USB module memory full' error on Hach Measuring Instruments?
If the Hach Measuring Instruments displays 'USB module memory full. Delete data and try again', it means the data storage is full. Here's how to resolve it: 1. Connect the USB/power module to your computer. 2. Download the stored data to your computer. 3. Delete the Data Log on the module.
What to do if Hach 2100Q prompts to disconnect the USB cable?
If the Hach Measuring Instruments displays 'Please disconnect the USB cable from your computer', it means the data storage isn't responding while connected to both the meter and the computer. Disconnect the USB cable from the meter and try sending the data again.
What to do if Hach 2100Q says 'Please enter at least one character'?
If the Hach Measuring Instruments displays 'Please enter at least one character', it means the password must contain at least one character. Create a password with at least one character.
What to do if Hach 2100Q Measuring Instruments says 'Delete Last Reading Failed'?
If the Hach Measuring Instruments displays 'Delete Last Reading Failed!', it indicates an error in the data storage. Turn the meter off and on. If the error persists, contact technical support.
What to do if Hach Measuring Instruments says 'Password incorrect'?
If the Hach Measuring Instruments displays 'Password incorrect. Please retry', it means the wrong password was entered. Enter the correct password.
What does 'ADC Failure!' mean on Hach 2100Q?
If the Hach Measuring Instruments displays 'ADC Failure!', it indicates a hardware error causing the reading to fail. Try repeating the reading.
Manufacturer's disclaimer and essential safety precautions for users.
Explanation of hazard symbols (DANGER, WARNING, CAUTION, NOTICE) used in the manual.
Guidance on understanding instrument labels and safety alert symbols for injury prevention.
Step-by-step instructions for safely installing AA alkaline or NiMH batteries.
Instructions for powering the meter on and off, including auto-shutoff.
Detailed procedure for calibrating the turbidimeter using StablCal standards.
Guide to performing turbidity measurements, including sample preparation and precautions.
Step-by-step guide for conducting a turbidity measurement with the instrument.
Step-by-step guide for performing a StablCal RapidCal calibration.
Procedure for verifying the calibration status of the turbidimeter.
Procedure for verifying the calibration status of the turbidimeter.
Table listing common error/warning messages, causes, and solutions.
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 |
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