Iron High Range
Dear Customer,
Thank you for choosing a Hanna Instruments Product.
Preliminary examination:
Please examine this product carefully. Make sure that the instrument is not damaged. If
any damage occured during shipment, please notify your Dealer.
Each
HI 721
meter is supplied complete with:
• Two Sample Cuvettes and Caps
• Six powder reagents for Iron High Range
• 1 x 1.5V AAA Battery
• Instruction Manual
HI 721
Technical specifications:
Range
0.00 to 5.00 ppm
Resolution
0.01 ppm
Precision
±0.04 ppm ±2% of reading @ 25°C
Typical EMC Dev.
±0.01 ppm
Light Source
Light Emitting Diode @ 525 nm
Light Detector
Silicon Photocell
Method
Adaptation of the EPA Phenantroline method 315B,
for natural and treated waters. The reaction between
iron and reagent causes an orange tint in the sample.
Environment
0 to 50°C (32 to 122°F);
max 95% RH non-condensing
Battery Type
1 x 1.5V AAA
Auto-Shut off
After 2 minutes of non-use and 10 seconds after reading.
Dimensions
81.5 x 61 x 37.5 mm (3.2 x 2.4 x 1.5”)
Weight
64 g (2.25 oz.).
Functional description:
Errors and warnings:
Light High:
There is too much light to perform a measurement.
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 cuvette are inverted.
Under range:
A blinking
“0.00”
indicates that the sample absorbs
less light than the zero reference. Check the procedure and make sure
you use the same cuvette for reference (zero) and measurement.
Over Range:
A flashing value of the maximum concentration indicates
an over range condition. The concentration of the sample is beyond
the programmed range: dilute the sample and re-run the test.
Battery low:
The battery must be replaced soon.
Dead battery:
This indicates that the battery is dead and must be
replaced. Once this indication is displayed, the meter will lock up.
Change the battery and restart the meter.
1. Cuvette cap.
2. Cuvette with cap.
3. Cuvette holder.
4. Liquid Crystal Display.
5. Button
For more details about spare parts and accessories
see “Accessories”.
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