Hanna Instruments HI774 Manuel utilisateur

INSTRUCTION MANUAL

HI774

Phosphate Ultra Low Range

Reagent Sets

HI774-25 Reagents for 25 Phosphate Ultra Low Range tests

Other Accessories

HI774-11 Phosphate Ultra Low Range Certified Standard Kit

HI731318 Cloth for wiping cuvettes (4 pcs.)

HI731315 Glass Cuvettes and Caps for Checker®HC Colorimeters (2 pcs.)

HI731353 Cuvette Seal Cap for Checker®HC Colorimeters (4 pcs.)

HI740028P 1.5V AAA batteries (12 pcs.)

HI93703-50 Cuvette cleaning solution (230 mL)

Accessories

IST774 10/18

HI774 is warranted for a period of one year after date of purchase against defects in

workmanship and materials when used for their intended purpose and maintained according

to instructions. This warranty is limited to repair or replacement free of charge. Damage due

to accidents, misuse, tampering or lack of prescribed maintenance is not covered. If service

is required, contact your local Hanna Instruments Office. If under warranty, report the model

number, date of purchase, serial number and the nature of the problem. If the repair is not

covered by the warranty, you will be notified of the charges incurred. If the instrument is to

be returned to Hanna Instruments, first obtain a Return Goods Authorization number from the

Technical Service department and then send it with shipping costs prepaid. When shipping any

instrument, make sure it is properly packed for complete protection.

Before using this product, make sure it is entirely suitable for your specific application and

for the environment in which it is used.

Any variation introduced by the user to the supplied equipment may degrade the meter’s

performance.

For yours and the meter’s safety do not use or store the meter in hazardous environments.

Recommendations for Users

Warranty

To save the battery, the instrument shuts down after 7 minutes of non-use and 2 minutes

after reading.

One fresh battery lasts for a minimum of 5000 measurements. When the battery is dead the

instrument will display “bAd” then ”bAt” for 1 second and then turns off.

To restart the instrument, the battery must be replaced with a new one.

To replace the instrument’s battery:

• Turn the instrument off by holding the button until the meter shuts off.

• Turn the instrument upside down and remove the battery cover with a screwdriver.

• Remove the battery from its location and replace it with a new one, inserting the negative

end first.

• Insert the battery cover and replace the screw with a screwdriver.

Battery Management

• It is important that the sample does not contain any debris.

• Whenever the cuvette is placed into the measurement cell, it

must be dry outside, and completely free of fingerprints, oil and

dirt. Wipe it thoroughly with HI731318 or a lint-free cloth prior

to insertion.

• Shaking the cuvette can generate bubbles, causing higher

readings. To obtain accurate measurements, remove such bubbles

by swirling or by gently tapping the cuvette.

• Do not let the reacted sample stand for too long after reagent

is added, as accuracy will be affected.

• After the reading it is important to immediately discard the

sample, otherwise the glass might become permanently stained.

Tips for an Accurate Measurement

Measurement Procedure

Please examine this product carefully. Make sure that the instrument is not damaged. If

any damage occurred during shipment, please contact your local Hanna Instruments Office.

Each HI774 meter is supplied complete with:

• Sample Cuvettes and Caps (2 pcs.)

• Reagents for 10 tests

• 1.5V AAA Battery (1 pc.)

• Instruction Manual and Quick Reference Guide

Thank You

Thank you for choosing a Hanna Instruments product. 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

[email protected]

Preliminary Examination

Specifications

Range 0.00 to 0.90 ppm

Resolution 0.01 ppm

Accuracy ±0.02 ppm ±5% of reading @25 °C/ 77 °F

Light Source Light Emitting Diode @525 nm

Light Detector Silicon Photocell

Method

Adaptation of Standard Methods for the Examination of Water and

Wastewater, 20th edition, Ascorbic Acid method. The reaction be-

tween phosphate and the reagent causes a blue tint in the sample.

Environment 0 to 50 °C (32 to 122 °F); RH max 95% non-condensing

Battery Type 1.5V AAA (1 pc.)

Auto-Shut off After 7 minutes of non-use and 2 minutes after reading

Dimensions 86.0 x 61.0 x 37.5 mm (3.4 x 2.4 x 1.5”)

Weight 52 g (1.84 oz.)

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

the reading is over 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.

Functional Description

Errors and Warnings

Cover

Cuvette with cap

Cuvette holder

LCD Liquid Crystal Display

Operation Button

• Turn the meter on by pressing the button. All

segments will be displayed. When the display

shows “Add”, “C.1” with “Press” blinking,

the meter is ready.

• Fill the cuvette with 10 mL of unreacted

sample and replace the cap. Place the cuvette

into the meter and close the meter’s cap.

• Press the button. When the display shows

“Add”, “C.2” with “Press” blinking the

meter is zeroed.

• Remove the cuvette from the meter and unscrew

the cap. Add the content of one packet of

HI774-0 reagent. Replace the cap and shake

gently for 2 minutes until the powder is

completely dissolved. Place the cuvette back

into the meter.

• Press and hold the button until the timer is

displayed on the LCD (the display will show

the countdown prior to the measurement) or,

alternatively, wait for 3 minutes and press the

button.

• The instrument directly displays the

concentration of phosphate in ppm. The

meter automatically turns off after 2 minutes.

Hanna Instruments reserves the right to modify the design, construction or appearance of

its products without advance notice.

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