Advertisement
Please read this instruction manual carefully before using the instrument.
For more information about Hanna Instruments and our products, visit www.hannainst.com.
For technical support, contact your local Hanna Instruments Office or e-mail us at tech@hannainst.com
Find your local Hanna Instruments Office at www.hannainst.com
Please examine this product carefully. Make sure that the instrument is not damaged. If any damage occured during shipment, please contact your local Hanna Instruments Office.
Each HI96738 Ion Selective Meter is supplied complete with:
Note: Save all packing material until you are sure that the Checker handheld colorimeter works correctly. Any damaged or defective item must be returned in its original packing material with the supplied accessories.
HI781 Marine Nitrate Low Range handheld checker is designed to accurately determine nitrate levels in aquariums and marine biology applications.
HI781 features a single-button operation system and is easy to use. The large LCD is easy to read and the auto shut-off feature assures the battery life will not be drained.
Range | 0.00 to 2.00 mg/L |
Resolution | 0.01 mg/L |
Accuracy @25°C (77°F) | ±0.10 mg/L ±5% of reading |
Light source | Tungsten Lamp |
Light Detector | Silicon Photocell with narrow band interference filter @575 nm |
Method | Adaptation of the Chlorophenol Red method. The reaction between chlorine dioxide and reagents causes a colorless to purple tint in the sample. |
Environment | 0 to 50°C (32 to 122°F); max 95% RH non-condensing |
Battery Type | 9V (1 pc.) |
Auto-Shut off | After 10' of non-use in measurement mode; after 1 hour of non-use in calibration mode; with last reading reminder |
Dimensions | 192 x 104 x 69 mm (7.6 x 4.1 x 2.7") |
Weight | 320 g (11.3 oz.) |
Unscrew the two halves of the reusable filter holder and carefully place one paper filter on the lower piece (the lower piece has no threads on the outlet). Ensure the filter paper is on top of the clear colorless gasket in the filter holder. Thread the upper piece over the lower piece and tighten securely. Ensure that the paper filter is not overlapping the threads. The filter holder assembly is now ready for use.
The checker shows clear warning messages when erroneous conditions appear and when measured values are outside the expected range. The information below provides an explanation of the errors and warnings, and the recommended action to be taken.
Light High: There is an excess amount of ambient light reaching the detector. Please check the preparation of the zero cuvette.
Light Low: There is not enough light to perform a measurement. Please check the preparation of the zero cuvette.
Inverted Cuvettes: The sample and the zero cuvettes are inverted. Swap the cuvettes and repeat the measurement.
Under Range: A blinking "0.00" indicates that the sample absorbs less light than the zero reference. Check the measurement procedure and make sure to use the same cuvette for reference (zero) and measurement.
Over Range: Maximum concentration value displayed blinking indicates the measured value is outside the limits of the method. Verify that the sample does not contain any debris. Dilute the sample and repeat the measurement.
Battery Low: Battery level is too low for the checker to function properly. Replace the battery with a new one.
Drained Battery: The battery is drained and must be replaced. Replace the battery with a new one and restart the checker.
To save the battery, the checker shuts down after 20 minutes of non-use and 4 minutes after reading. A fresh battery lasts for a minimum of 5000 measurements. When the battery is drained, the instrument displays "bAd" then "bAt", and turns off. To replace the battery, follow the next steps:
Reagent Sets | |
HI781-25 | Reagents for 25 Marine Nitrate Low Range tests |
Other Accessories | |
HI781-11 | Marine Nitrate Low Range certified standard kit |
HI731225 | Cuvette black cap for Checker ® HC colorimeters (4 pcs.) |
HI731318 | Cloth for wiping cuvettes (4 pcs.) |
HI731321 | Glass cuvette and seal cap for Checker ® HC colorimeters (4 pcs.) |
HI731353 | Cuvette seal cap for Checker ® HC colorimeters (4 pcs.) |
HI740028P | 1.5V AAA battery set (12 pcs.) |
HI740226 | 5 mL graduated syringe (1 pc.) |
HI740228 | Filter disc (25 pcs.) |
HI740270 | 10 mL syringe with Luer Lock (1 pc.) |
HI740271 | Filter holder with Luer Lock (1 pc.) |
HI740144P | Plastic tip for 5 mL syringe (10 pcs.) |
HI93703-50 | Cuvette cleaning solution, 230 mL |
Here you can download full pdf version of manual, it may contain additional safety instructions, warranty information, FCC rules, etc.
Download Hanna Instruments HI781 - Marine Nitrate Low Range Manual
Advertisement
Need help?
Do you have a question about the HI781 and is the answer not in the manual?
Questions and answers