Hanna Instruments HI 93714 User Manual

Instruction Manual

HI 93714

Cyanide ISM

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Warranty

HI 93714 is warranted for two years against defects in workmanship and materials when used for its intended purpose and maintained according to 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 the dealer from whom you purchased

the instrument. 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.

All rights are reserved. Reproduction in whole or in part is prohibited without the written consent of the copyright owner, Hanna Instruments Inc., Woonsocket, Rhode Island, 02895 , USA.

Hanna Instruments reserves the right to modify the design, construction and appearance of its products without advance notice.

Compliance with the CE Directives

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

provide you with the necessary information for the correct operation of the meter. 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

Remove the instrument from the packing material and examine it carefully to make sure that no damage has occurred during shipment. If there is any damage, notify your Dealer.

Each Ion Specific Meter is supplied complete with

• 9V Battery

• Two Sample Cuvets and Caps

• One Transport Cap

Note: Conserve all packing material until the instrument

has been observed to function correctly. Any defective item must be returned in its original packing.

General Description

–

The HI 93714 meter measures the cyanide (CN water, wastewater and seawater in the 0.000 to 0.200 mg/L (ppm) range.

The meter uses an exclusive positive-locking system to ensure that the cuvet is in the same place every time it is placed into the measurement cell.

The reagents are in powder form and are supplied in bottles with spoon (Reagent A) and in packets (Reagents B and C).

Display codes aid the user in routine operations. The meters have an auto-shut off feature that will turn the

instrument off after 10 minutes of non-use.

IST93714R4 09/06

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Specifications Display Code Guide

This indicates that the meter is in a ready state and zeroing can be performed.

Sampling in Progress. This prompt appears

CUVET HOLDER

CUVET ALIGNMENT INDICATOR

ON/OFF

ZERO

READ TIMED

READ DIRECT

Range: 0.000..0.200 ppm

OFF

READ

DIRECT

HI 93714

ins

CYANIDE

rum n

ZERO

READ

TIMED

SPECIFICATIONS

Range 0.000 to 0.200 mg/L Resolution 0.001 mg/L Accuracy ±0.005 mg/L ±3% of reading Typical EMC ±0.001 mg/L

Deviation Light Source Light Emitting Diode @ 585 nm Method Adaptation of the Standard Methods

for the Examination of Water and Wastewater, 18

edition, PyridinePyrazalone method. The reaction between cyanide and reagents causes a blue tint in the sample.

Light Detector Silicon Photocell Environment 0 to 50°C (32 to 122°F);

max 95% RH non-condensing

Battery Type/Life 1 x 9 volt/40 hours Auto-Shut off After 10' of non-use Dimensions 180 x 83 x 46 mm (7.1 x 3.3 x

1.8")

Weight 290 g (10 oz.).

REQUIRED REAGENTS

Code Description Quantity

HI 93714A-0 Reagent A 1 spoon HI 93714B-0 Reagent B 1 packet HI 93714C-0 Reagent C 1 packet

REAGENT SETS

HI 93714-01 Reagents for 100 tests HI 93714-03 Reagents for 300 tests

each time the meter is performing a measurement.

This indicates that the meter is in a zeroed state and measurement can be performed.

A zero reading was not taken. Insert a sample before adding reagent and press ZERO.

Under range. A blinking "0.000" indicates that 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.

Over range. A flashing value higher than the maximum concentration readable (see specifications) indicates that the sample absorbs too much light, meaning that the concentration is too high. Dilute the sample.

Light over range. The cuvet is not inserted correctly and an excess ambient light is reaching the detector. If the cover is properly installed, then contact your dealer or the nearest Hanna Customer Service Center.

Light under range. The zero sample is too dark for proper zeroing. If this is not the case, contact your dealer or the nearest Hanna Customer Service Center.

The "V" indicates that the battery voltage is getting low and the battery needs to be replaced.

This indicates that the battery is dead and must be replaced.

Note: once this indication is displayed, the meter will lockup. Change the battery to restart.

Operational Guide

MEASUREMENT PROCEDURE

• Turn the meter on by pressing ON/OFF.

• When the LCD displays "- - -", it is ready.

Note: Temperature is a very important parameter for this

test method. For best results the sample should have a temperature not exceeding 20°C.

• Fill a cuvet up to 1.5 cm (¾") below the rim with 10 mL of unreacted sample and replace the cap.

• Place the cuvet into the holder and ensure that the notch on the cap is positioned securely into the groove.

• Press ZERO and "SIP" will appear on the display.

ZERO

• Wait for a few seconds and the display will show "-0.0-". Now the meter is zeroed and ready for measurement.

• Remove the cuvet and add 1 level spoon of HI 93714A Cyanide Reagent. Remember to close the reagent bottle immediately after use.

Note: Pay attention to the way

the spoon is filled:

- do not overfill it;

- do not press the powder.

10 mL

OFF

• Replace the cap immediately, to prevent the escape of chlorine gas which is developed during the reaction, and shake gently for 30 seconds.

• Wait for 30 seconds and add the content of one packet of HI 93714B-0 reagent. Replace the cap and shake gently for 10 seconds.

• Immediately add the content of one packet of HI 93714C-0 reagent, replace the cap and shake vigorously for 20 seconds.

• Reinsert the cuvet into the instrument.

• Press READ TIMED and the display will show the countdown prior to the measurement or, alternatively, wait for 25 minutes and press READ DIRECT. In both cases "SIP" will appear during measurement.

25’

READ

TIMED

READ

DIRECT

Note: Shake the cuvet 4 or 5 times vigorously during the

first 20 minutes of the timed reading. Accuracy is not affected by undissolved reagent powder.

• The instrument directly displays concentration in mg/L of cyanide on the Liquid Crystal Display.

To convert the result in ppm of Potassium Cyanide (KCN) multiply it by 2.5.

30"

INTERFERENCES

Interference may be caused by large amounts of turbidity that will cause high readings.

Oxidizing (like chlorine) or reducing agents (such as sulfide or sulfur dioxide) are known to interfere with the measurement. Distillation will remove these.

Samples with high pH values should be adjusted to approximately pH 7 before testing.

Battery Replacement

Battery replacement must only take place in a non-hazardous area using a 9V alkaline battery.

Simply slide off the battery cover on the back of the meter. Detach the battery from the terminals and attach a fresh 9V battery while paying

SLIDE

OFF

attention to the correct polarity.

CAUTION: Cyanide, its solutions and hydrogen cyanide

10"

liberated by acids are very poisonous.

Tips for an Accurate Measurement

Replace the battery and the cover.

Accessories

REAGENT SETS

HI 93714-01 Reagents for 100 tests HI 93714-03 Reagents for 300 tests

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

• Do not touch the cuvet walls with hands.

• In order to maintain the same conditions during the zeroing and the measuring phases, it is necessary to close the cuvet to prevent any contamination.

• Do not let the test sample stand too long after reagent is added or accuracy will be affected.

• Whenever the cuvet is placed into the measurement cell, it must be completely free of fingerprints, oil or dirt. Wipe it thoroughly with HI 731318 or a lint-free cloth

OTHER ACCESSORIES

HI 710009 Blue rubber boot HI 710010 Orange rubber boot HI 721310 9V battery (10 pcs) HI 731318 Tissue for wiping cuvets (4 pcs) HI 731321 Glass cuvets (4 pcs) HI 731325 Caps for cuvets (4 pcs) HI 93703-50 Cuvets cleaning solution (230 mL).

CE Declaration of Conformity

prior to insertion.

• It is important that the sample does not contain any debris. This would corrupt the readings.

• It is possible to take multiple readings in a row, but it is recommended that a zero reading be taken for each sample and that the same cuvet is used for zeroing and measurement.

• It is important to discard the sample immediately after the reading is taken because the glass might become permanently stained.

• Shaking the cuvet can generate bubbles in the sample, causing higher readings. To obtain accurate measurements, remove such bubbles by swirling or by gently tapping the vial.

• All the reaction times reported in this manual are referred to 20°C (68°F). As a general rule of thumb, they should be doubled at 10°C (50°F) and halved at 30°C (86°F).

Recommendations for Users

Before using these products, make sure that they are entirely suitable for the environment in which they are used.

Operation of these instruments in residential area could cause unacceptable interferences to radio and TV equipments, 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 perform any measurement in microwave ovens.