Hanna Instruments HI 764 Manual

HI 764
Nitrite Ultra Low Range
w w w . h a n n a i n s t . c o m
Dear Customer,
Thank you for choosing a Hanna Instruments Product.
Please read this instruction manual carefully before using the instrument. If you need
additional technical information, do not hesitate to e-mail us at tech@hannainst.com.
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 764 meter is supplied complete with:
• Two Sample Cuvettes and Caps
• Six powder reagents for Nitrite Ultra Low Range
• 1 x 1.5V AAA Battery
• Instruction Manual
For more details about spare parts and accessories
see "Accessories".
Technical specifications:
Range 0 to 200 ppb
Resolution 1 ppb
Accuracy ±10 ppb ±4% of reading @ 25°C
Typical EMC Dev. ±10 ppb
Light Source Light Emitting Diode @ 525 nm
Light Detector Silicon Photocell
Method Adaptation of the EPA Diazotization method 354.1.
The reaction between nitrite and the reagent causes a
pink 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.
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:
1. Cuvette cap.
2. Cuvette with cap.
3. Cuvette holder.
4. Liquid Crystal Display.
5. Button
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" 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, normal operation of the
instrument will be interrupted. Change the battery and restart the
meter.