Hanna-instruments HI 93749 User Manual download pdf

Instruction Manual

HI 93749

Chromium VI Low

Range ISM

http://www.hannainst.com

This Instrument is in

Compliance with the CE Directives

Hanna Instruments reserves the right to modify the design, construction

and appearance of its products without advance notice.

WARRANTYWARRANTY

WARRANTY

HI 93749 is warranted for two years against defects in workman-

ship 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 pur-

chase, 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 de-

partment and then send it with shipment costs prepaid. When shipping

any instrument, make sure it is properly packaged for complete protec-

tion.

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 Instru-

ments Inc., Woonsocket, Rhode Island, 02895 , USA.

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 [email protected].

This instrument is in compliance with directives

EN 50081-1 and EN 50082-1.

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.

PRELIMINARY EXAMINATIONPRELIMINARY EXAMINATION

PRELIMINARY EXAMINATION

GENERAL DESCRIPTIONGENERAL DESCRIPTION

GENERAL DESCRIPTION

The HI 93749 meter measures the hexavalent chromium (Cr

VI) content in water and wastewater in the 0 to 300 µg/

L (ppb) 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

packets. The amount of reagent is precisely dosed to ensure

maximum repeatability.

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.

SPECIFICATIONSSPECIFICATIONS

SPECIFICATIONS

Range 0 to 300 µg/L

Resolution 1 µg/L

Accuracy ±1 µg/L ±4% of reading

Typical EMC ±1 µg/L

Deviation

Light Source Light Emitting Diode @ 555 nm

Method Adaptation of the ASTM Manual of Water

and Environmental Technology, D1687-

92, diphenyl-carbohydrazide method. The

reaction between chromium VI and the

reagent causes a purple tint in the sample

Light Detector Silicon Photocell

Environment 0 to 50°C (32 to 122°F);

max 95% RH non-condensing

Battery Type/Life1 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 93749-0 Powder reagent 1 packet

REAGENT SETS

HI 93749-01 Reagents for 100 tests

HI 93749-03 Reagents for 300 tests

READ TIMED

ZERO

CUVET HOLDER

CUVET

ALIGNMENT INDICATOR

ON/OFF

READ DIRECT

ins

rum n

OFF

ZERO

READ

DIRECT

READ

TIMED

HI 93749

CHROMIUM VI

LOW RANGE

Range: 0 to 300 ppb

This indicates that the meter is in a

ready state and zeroing can be per-

formed.

Sampling in Progress. This prompt ap-

pears 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 "0.00" 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 in-

serted 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 volt-

age 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 bat-

tery to restart.

DISPLAY CODE GUIDEDISPLAY CODE GUIDE

DISPLAY CODE GUIDE

1 2

Summary of Contents

Page 1 - Range: 0 to 300 ppb

Instruction ManualHI 93749Chromium VI LowRange ISMhttp://www.hannainst.comThis Instrument is inCompliance with the CE DirectivesHanna Instruments rese

Page 2 - OTHER ACCESSORIES

OPERATIONAL GUIDEOPERATIONAL GUIDEOPERATIONAL GUIDEOPERATIONAL GUIDEOPERATIONAL GUIDEMEASUREMENT PROCEDURE• Turn the meter on by pressing ON/OFF.• Whe

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