What to do if Hach Measuring Instruments show 'Over range!'?
If the Hach Measuring Instruments display 'Over range!', it means the concentration exceeds the upper limit of the current method. To resolve this, dilute the sample and repeat the reading.
What to do if Hach DR 1900 show 'Absorbance > 3.5!'?
If the Hach Measuring Instruments display 'Absorbance > 3.5!', it indicates that the measured absorbance is more than 3.5. Dilute the sample and repeat the reading to resolve this issue.
What to do if Hach DR 1900 display 'Under range!'?
If the Hach Measuring Instruments display 'Under range!', it means the concentration is less than the lower limit of the current method. Examine the sample to fix this.
What to do if Hach Measuring Instruments show 'Failed in sending data!'?
If the Hach Measuring Instruments display 'Failed in sending data!', ensure that the module is inserted and latched correctly.
What to do if Hach DR 1900 Measuring Instruments show 'Please attach the module!'?
If the Hach Measuring Instruments display 'Please attach the module!', it means the module is not found when data is sent. Insert a module to resolve this.
What to do if Hach DR 1900 Measuring Instruments show 'Initializing Failed!'?
If the Hach Measuring Instruments display 'Initializing Failed!', it means the instrument failed while initializing. Set the instrument to off and then to on.
Manufacturer's responsibility, user precautions, and reading all danger/caution statements.
Instructions for installing batteries, sample cell adapters, and the protective cover.
Instructions on how to turn the instrument on and off using the power key.
Overview of available program types and how to select stored methods.
Accessing performance tests like optical checks and service reminders.
Performing wavelength, absorbance, and stray light accuracy checks.
Using verification kits for periodic monitoring of instrument performance.
Common problems, their possible causes, and solutions for the instrument.
Manufacturer's responsibility, user precautions, and reading all danger/caution statements.
Instructions for installing batteries, sample cell adapters, and the protective cover.
Instructions on how to turn the instrument on and off using the power key.
Overview of available program types and how to select stored methods.
Accessing performance tests like optical checks and service reminders.
Performing wavelength, absorbance, and stray light accuracy checks.
Using verification kits for periodic monitoring of instrument performance.
Common problems, their possible causes, and solutions for the instrument.
The Hach DR 1900 is a portable VIS spectrophotometer designed for water analysis in various applications, including drinking water, wastewater, and industrial settings. It measures in the wavelength range of 340 to 800 nm, making it suitable for a wide array of tests. For field use, the instrument operates on four AA batteries, providing portability and convenience.
The DR 1900 is equipped with a comprehensive set of application programs to facilitate diverse measurement needs. These include:
The instrument's user interface is designed for intuitive navigation. The reading screen displays essential information such as the selected mode, wavelength, unit, date and time, operator ID, and sample ID. A progress bar indicates the measurement status, and for TNTplus vials, a control bar shows the relationship between the reading result and the reading range, independent of any dilution factor.
General| Type | Portable Spectrophotometer |
|---|---|
| Wavelength Accuracy | ±1 nm |
| Measurement Modes | Absorbance, Transmittance, Concentration |
| Photometric Resolution | 0.001 Abs |
| Detector | Silicon Photodiode |
| Display Resolution | 128 x 64 pixels |
| Connectivity | USB |
| Operating Temperature | 0 to 50 °C |
| Storage Temperature | -20 to 60 °C |
| Display | LCD |
| Data Storage | 500 data sets |
| Power Supply | Rechargeable Battery |
| Wavelength Range | 340 - 800 nm |
| Number of Methods | Over 200 methods |
| Light Source | Tungsten lamp |
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