Hanna Instruments HI 83730 User Manual

Instruction manual

HI 83730

ISM

peroxide value

of edible oils

www.hannainst.com

Warranty

HI 83730HI 83730

HI 83730 is warranted for two years against defects in workmanship

HI 83730HI 83730 and materials when used for its intended purpose and maintained according to the instructions.

This warranty is limited to repair or replacement free of charge. Damages due to accident, misuse, tampering or lack of prescribed

maintenance are not covered. If service is required, contact your dealer. If under warranty, report

the model number, date of purchase, serial number and the nature of the failure. 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 Returned Goods Authorization Number from the Customer Service Department and then send it with shipment costs prepaid. When shipping any instrument, make sure it is properly packaged for complete protection.

To validate your warranty, fill out and return the enclosed warranty card within 14 days from the date of purchase.

Dear Customer, Thank you for choosing a Hanna product. This manual will provide

you with the necessary information for the correct use of the instrument. Please read it carefully before using the meter. If you need additional technical information, do not hesitate to e-mail us at tech@hannainst.com.

This instrument is in compliance with

directives.

Preliminary examination

Please examine this product carefully. Make sure that the instrument is not damaged. If any damage occurred during shipment, please notify your Dealer.

Each HI 83730 Ion Selective Meter is supplied complete with:

• reagents for 10 tests;

• four graduated 1 mL syringes, scissors, tissue for wiping vials;

• four 1,5V AA batteries and AC Adapter

• instruction manual and rigid carrying case

Note: save all packing material until you are sure that the

instrument works correctly. Any defective item must be returned in its original packing.

General description

The HI 83730 is an auto-diagnostic portable microprocessor meter that benefits from Hanna’s years of experience as a manufacturer of analytical instruments. It has an advanced optical system based on a special tungsten lamp and a narrow band interference filter that allows most accurate and repeatable readings. All instruments are factory calibrated.

The auto-diagnostic feature of this meter ensures always optimal measurement conditions to ensure most precise readings. The light level is automatically adjusted each time a zero-measurement is made, and the temperature of the lamp is controlled to avoid overheating.

Significance and use

Peroxides are the primary products of oil oxidation. Their identification gives useful informations about oil conservation and

HI 83730HI 83730

rancidity.

HI 83730 allows fast and simple analyses of perox-

HI 83730HI 83730

ides in oil in accordance with the EC 2568/91 method.

Oil peroxides content

< 10 meq O2/kg excellent conservation 10-15 meq O2/kg good conservation < 10 meq O2/kg refined oil > 20 meq O2/kg rancid oil

IST83730 12/05

Specifications

RangeRange

Range 0.0 to 25.0 meq O

RangeRange ResolutionResolution

Resolution 0.5 meq O

ResolutionResolution AccuracyAccuracy

Accuracy ± 0.5 meq O

AccuracyAccuracy Light sourceLight source

Light source tungsten lamp with narrow band

Light sourceLight source

interference filter @ 466 nm

MethodMethod

Method adaptation of EC 2568/91 method

MethodMethod

and following amendments

Light detectorLight detector

Light detector silicon photocell

Light detectorLight detector EnvironmentEnvironment

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

EnvironmentEnvironment Power supplyPower supply

Power supply 4x1.5 V AA or adapter 12 Vdc

Power supplyPower supply Auto shut-offAuto shut-off

Auto shut-off after 15 min of non use

Auto shut-offAuto shut-off Weight/dimensionsWeight/dimensions

Weight/dimensions 512 g; 224 x 87 x 77 mm

Weight/dimensionsWeight/dimensions

Required reagentsRequired reagents

Required reagents

Required reagentsRequired reagents Code Description Quantity/test HI 83730A-0 Peroxide reagent A 1 vial HI 83730B-0 Peroxide reagent B 1 packet

/kg

Functional description

1) Lid

2) Cuvet holder

3) Liquid Crystal Display (LCD)

4) ON/OFF key, to turn the meter on and off

5) ZERO key, to zero the meter

6) TIMER key, to active a countdown

7) READ key, to perform measurement

8) Power socket 12V to 20 V dc 2.5 Watt

Chemical reaction

The reaction between sample and reagent causes a color variation, proportional to the peroxide content expressed in meq O

/kg.

Guide to display codes

This prompt appears for a few seconds each time the instrument is turned ON.

These prompts indicate the type of power supply: “Line” (if the external power supply is used) or the battery level.

Indicates that the instrument is in a ready state and waiting for the next command (Timer or Zero).

After TIMER is pressed, a blinking hourglass icon appears and the display shows a 6 minutes countdown.

Indicates that the meter is performing a zero measurement. The light intensity is automatically re-adjusted if necessary.

The instrument is zeroed and a measurement can be made.

Indicates that the meter is making a measurement.

Batteries voltage is getting low and the batteries need to be replaced.

Indicates that the batteries are dead and must be replaced. After this message appears, the instrument is switched off.

Error messages

Change the batteries and restart the meter.

The meter has lost its configuration. Contact your dealer or the nearest Hanna Customer Service Center.

“Light high”: there is too much light to perform a measurement. Please check the preparation of the zero cuvet.

“Light low”: there is not enough light to perform a measurement. Please check the preparation of the zero cuvet.

“No Light”: the lamp is not working because of a malfunction. Contact your dealer or the nearest Hanna Customer Service Center.

“Inverted”: the sample and the zero cuvet are inverted.

The sample absorbs less light than the zero reference. Check the procedure and make sure you use the same cuvet for reference (zero) and measurement.

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 measure again.

CE declaration of conformity

Recommendations for Users

Before using these products, make sure that they are entirely suitable for your specific application and for the environment in which they are used. Operation of these instruments may cause unacceptable interferences to other electronic equipments, this requiring the operator to take all necessary steps to correct interferences. Any variation introduced by the user to the supplied equipment may degrade the instruments' EMC performance.

To avoid damages or burns, do not put the instrument in microwave ovens. For yours and the instrument safety do not use or store the instrument in hazardous environments.

General tips for an accurate measurement

The instructions listed below should be carefully followed during testing to ensure best accuracy.

• In order to measure exactly 1 mL of oil: (a) Push the plunger completely into the syringe. (b) Insert the syringe in the oil and push the plunger up and

down twice to rinse the plunger up until the lower edge of the seal is exactly on the 0.0 mL mark.

tip. Then, keeping the syringe in vertical position above the vial, push the plunger completely down into the syringe.

• Proper use of the powder reagent packet: (a) use scissors to open the powder pocket; (b) push the edges of the packet to form a spout; (c) pour out the content of the packet.

• In order to avoid reagent leaking and to obtain more accurate measurements, it is recommended to close the cuvet very well with the cap.

• Whenever the cuvet is placed into the measurement cell, it must be dry outside, and completely free of fingerprints, oil or dirt. Wipe it throughly with HI 731318 or a lint-free cloth prior to insertion.

• The official method EC 2568/91 recommends to work at room temperature, between 15 and 25 °C.

and eliminate air bubbles; then pull

Instructions

READ THE ENTIRE INSTRUCTIONS BEFORE USING THE KIT

• Remove the cap from a vial of HI 83730A-0 Peroxide reagent.

• Use the graduated syringe to add exactly 1 mL of oil. For a correct use of the syringe, please see the paragraph "General tips for an accurate measurement".

• Add the sample to the vial and replace the cap.

• Mix by inverting the vial twice.

• Turn on the meter by pressing the ON/OFF key. When the LCD displays “---”, it is ready.

• Place the vial into the instrument.

• Press the ZERO key and “----” will blink on the display.

• After a few seconds the display will

show “-0.0-”. The meter is zeroed and ready for measurement. Remove the vial.

• Remove the cap from the vial and add one packet of HI 83730B-0 Peroxide reagent.

• Replace the cap and press TIMER to start the countdown.

• Mix

VIGOROUSLY for 1 minute.

• Insert the vial into the instrument and wait for

Note: 30 seconds before countdown finishes, invert the vial twice.

5 minutes.

• When the countdown finishes, the meter makes the reading. If you have not used the TIMER key, press READ to make the measure. In both cases the display will show “----” during the measurement.

• The meter directly displays the peroxide value in meq O

/kg

on the LCD.

Notes:

• To convert the reading to mmol O

/kg multiply the reading

by 0.5.

• To convert the reading to mg O

/kg multiply the reading

by 8.

Battery replacement

Battery replacement must only take place in a non-hazardous area. The blinking “

” will appear when the

batteries power gets low. When batteries are completely

discharged, “0% bAtt” will appear and after two seconds the instrument is switched off.

Remove the battery cover from the bottom of the instrument and change the old batteries with 4 fresh 1.5V batteries, paying attention to the correct polarity.

Replace the cover.

Accessories

HI 83730-20 reagents kit (21 tests) HI 93703-50 cleaning solution, 230 mL

HI 740216 test tube cooling rack HI 740142P 1 mL graduated syringe, 10 pcs. HI 731318 tissue for wiping cuvets, 4 pcs. HI 710005 voltage adapter from 115V to 12 Vdc HI 710006 voltage adapter from 230V to 12 Vdc

Health and safety

The chemicals contained in this kit may be hazardous if improperly handled. Read the relevant Health and Safety Data Sheet before performing this test.