Hanna Instruments HI 93703-11 Manual de usuario

LOG LOBAT

TIME

DATE

LOGGING

MICROPROCESSOR

TURBIDITYMETER

LOGGING

MICROPROCESSOR

TURBIDITY METER

ALT

DATE

READ

VIEW

STO

CLR

CAL

GLP

OFF

HI93703-11HI 93703-11

188

Instruction Manual

HI 93703-11

PortableLogging

Turbidity Meter with RS232

www.hannainst.com

MAN93703-11R1 08/05

SALES AND TECHNICAL SERVICE CONTACTS

Australia:

Tel. (03) 9769.0666 • Fax (03) 9769.0699

China:

Tel. (10) 88570068 • Fax (10) 88570060

Egypt:

Tel. & Fax (02) 2758.683

Germany:

Tel. (07851) 9129-0 • Fax (07851) 9129-99

Greece:

Tel. (210) 823.5192 • Fax (210) 884.0210

Indonesia:

Tel. (21) 4584.2941 • Fax (21) 4584.2942

Japan:

Tel. (03) 3258.9565 • Fax (03) 3258.9567

Korea:

Tel. (02) 2278.5147 • Fax (02) 2264.1729

Malaysia:

Tel. (603) 5638.9940 • Fax (603) 5638.9829

Singapore:

Tel. 6296.7118 • Fax 6291.6906

South Africa:

Tel. (011) 615.6076 • Fax (011) 615.8582

Taiwan:

Tel. 886.2.2739.3014 • Fax 886.2.2739.2983

Thailand:

Tel. 66.2619.0708 • Fax 66.2619.0061

United Kingdom:

Tel. (01525) 850.855 • Fax (01525) 853.668

USA:

Tel. (401) 765.7500 • Fax (401) 765.7575

For e-mail contacts and complete list of Sales and

Technical offices, please see www.hannainst.com

DearCustomer,

ThankyouforchoosingaHannaproduct.

Please read this instruction manual carefully

beforeusingtheinstrument.

Thismanualwillprovideyouwiththenecessary

informationforthecorrectuseoftheinstrument.

Ifyouneedadditionaltechnicalinformation,do

not hesitate to e-mail us at

[email protected]

This instrument is in compliance with the

directives.

TABLEOFCONTENTS

PreliminaryExamination ............................ 3

GeneralDescription.................................... 3

PrincipleofOperation ................................. 5

FunctionalDescription................................ 6

Specifications ............................................ 7

OperationalGuide ...................................... 8

MeasurementProcedure ....................... 8

Log-on-demand ................................... 11

CleaningLoggedData ......................... 11

ViewingLoggedData .......................... 12

Viewingand settingDate andTime ..... 12

ErrorCodes......................................... 13

EnsureAccurateMeasurements ............. 14

SourcesofInterference....................... 15

Calibration................................................ 16

CalibrationProcedure .......................... 16

ViewingCalibrationDate ..................... 18

EnsureAccurateCalibration................ 18

StandardSuspension .......................... 19

BatteryReplacement ............................... 20

PCConnection......................................... 21

Accessories............................................. 22

Warranty .................................................. 23 23

Recommendations for Users

Before using this product, make sure that it is entirely suitable for the environment

in which it is used.

Operation of this instrument 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 instrument's EMC performance.

To avoid electrical shock, do not use this instrument when voltages at the

measurement surface exceed 24 Vac or 60 Vdc.

To avoid damages or burns, do not perform any measurement in microwave

ovens.

WARRANTY

AllHannaInstrumentsmetersarewarranted

fortwoyearsagainstdefectsinworkmanship

and materials when used for their intended

purpose and maintained according to instruc-

tions. This warranty is limited to repair or

replacement free of charge. Damages due to

accidents, misuse, tampering or lack of pre-

scribedmaintenancearenotcovered.

If service is required, contact the dealer from

whom you purchased the instrument. If under

warranty, report the model number, date of

purchase,serial numberand thenature ofthe

failure.FirstobtainaReturnedGoodsAuthori-

zationnumberfromtheCustomerServicede-

partment, then return the instrument with the

Authorization # included along with shipment

costsprepaid.Iftherepairisnotcoveredbythe

warranty,you will be notified of the charges.

Whenshippinganyinstrument,makesureitis

properlypackagedforcompleteprotection.

All rights are reserved. Reproduction in whole

or in part is prohibited without the written

consent of the copyright owner.

Removethe instrument fromthe packing material

and examine it to make sure that no damage has

occurred during shipping. If there is any damage,

notifyyourDealer.

HI 93703-11 is suppliedcomplete with:

•Glass cuvet with cap

•Batteries (4 x 1.5V AA)

•Instructionmanual

Note:Saveallpackingmaterialuntilyouaresure

that the instrument functions correctly. Any

defective item must be returned in its original

packagingwiththe suppliedaccessories.

WithHI93703-11turbiditymeasurementscan

beperformedwithhighprecisioninthefieldas

well as in the laboratory. HI93703-11 turbidity

meter is a microprocessor-based instrument

used to determine the turbidity of water and

waste-water. The meter covers a 0-1000 FTU

rangein twoscales: 0.00to 50.00FTU and50

to 1000 FTU. The autoranging feature of the

instrument sets the appropriate range for the

measurement.

HI93703-11alsoincludesareal-timeclockand

log-on-demand capability. The PC

communicationismadethroughaserialportof

your computer and the 5-pin socket on the

meter.

Note: HI 93703-11 has been designed

according to the ISO 7027 International

Standard, consequently the turbidity

measurement units are expressed in

FTU (Formazine Turbidity Unit). FTU is

identical to the other internationally

recognized unit: NTU (Nephelometric

Turbidity Unit).

GENERALDESCRIPTION

ACCESSORIES

HI731318 Tissueforwipingcuvets(4 pcs)

HI 731321 Spareglasscuvet(4 pcs)

HI 731313 Maintenance kit: rugged

carrying case including HI

93703-0 and HI 93703-10

calibrationsolutions,HI 93703-

50 cuvet cleaning solution, 1

tissuefor wiping cuvets and 2

cuvets

HI 93703-0 AMCO-AEPA-1 @0 FTU*

calibrationsolution, 30 mL

HI93703-05 AMCO-AEPA-1 @500 FTU*

calibrationsolution, 30 mL

HI 93703-10 AMCO-AEPA-1 @10 FTU*

calibrationsolution, 30 mL

HI 93703-50 Cuvet cleaning solution, 230

HI92000 Windows®compatiblesoftware

HI920011 SerialcableforPCconnection

(5to9-pin)

*1 FTU =1 NTU

PRELIMINARYEXAMINATION

Themeterishousedinaruggedandlightweight

case,withan easy-to-readLCD.

Tosavebattery-life,theinstrumentisequipped

with an automatic shut-off feature which is

activatedafter5-minutesofnon-use.Thisfea-

tureisdisabledwhenthemeterisconnectedto

the serial port of the computer.

Alloperations can be carried out with only five

keys and troubleshooting functions can be

performedwithdisplayederrorcodeguides.

A positive-locking system guarantees that the

cuvet is firmly placed in the cell.

Thekeypadiswater-resistantandcanbewiped

with a moist cloth for quick cleanups.

Two or three point calibration (0,10, 500 FTU*)

can be easily performed using available stan-

dards, and the last calibration date is auto-

matically stored for future retrivial.

We have chosen 10 FTU * as the standard

calibration point because it best fits the

water turbidity measurements in different

applications,fromdrinkingwatertowaste-

water treatment.

HANNA instruments®uses the primary stan-

dard AMCO-AEPA-1 to avoid all formazine-

related problems. Formazine is a toxic, un-

stablesubstance,whichrequiresparticularcare:

its standards have to be prepared only a few

minutesbeforeperformingthecalibration,and

cannot be reused because of their short life.

HANNAinstruments®standardsareextremely

stable, can be reused, and last up to six

months,iffreefromcontamination.

HI 93703-11canbeusedwithbothstandards.

*1 FTU =1 NTU

Battery replacement must only take place in a

safeareaandusing1.5VAAalkalinebatteries.

To install or replace the

batteries,turntheunitoff

and remove the battery

compartmentcoveronthe

raerofthemeter.

Insert the new batteries

while paying attention to

the polarity.

Afterthebatterieshavebeeninstalled,closethe

battery cover and make sure the gasket is in

placebeforetighteningthe2screws,toensure

awatertight seal.

1.5V

SCREW

POTS

PCCONNECTION

To communicate with the instrument through

theHI92000software,usetheHI920011cable

(optional)to connect a serialport of your com-

puter to the 5 pin connector of the meter.

When connected the meter will maintain full

functionality,beingabletoperformadatatrans-

ferwhile themeter isbeing operated.

Notes:

• Serialcommunicationisnotallowedwhenthe

meteris being calibrated.

•Theautoshut-offfeatureisalsodisabledwhen

the meter is connected to a computer.

IR LED

EMITTED LIGHT (890 nm)

CUVET

LIGHT

DETECTOR

90° SCATTERED

LIGHT

PRINCIPLEOFOPERATION

*1 FTU =1 NTU

HI 93703-11 has been designed to perform

measurements according to the ISO 7027 In-

ternationalStandard.

Theinstrumentfunctionsbypassingabeamof

infraredlightthroughavialcontainingthesample

beingmeasured.

Asensor, positioned at 90°with respect to the

direction of light, detects the amount of light

scatteredbytheundissolvedparticlespresent

in the sample. The microprocessor converts

such readings into FTU* values.

As noted above, FTU unit is equal to the NTU

unit.However,thereareotherknownmeasure-

mentunits for turbidity:Jackson Turbidity Unit

(JTU) based on the old method of Jackson's

candle,andSilicaUnit(mg/LofSiO2).Foryour

referencetheconversiontablebetween these

measurementunits isshown below:

JTU FTU/NTU SiO2 (mg/L)

JTU 1 19 2.5

FTU/NTU 0.053 1 0.13

SiO2 (mg/L) 0.4 7.5 1

BATTERYREPLACEMENT

All components have been selected to mini-

mizecurrentdrainwithoutcompromisingfunc-

tionality. In order to minimize the battery con-

sumption, the meter is equipped with an auto-

shut off function which switches the meter off

after 5 minutes of non-use.

The four 1.5V batteries guarantee 60 hours of

workinglife(or900measurements).

Inordertoobtainaccuratemeasurements,the

batterylevelismonitoredeverytimethemeter

is switched on.

Inaddition,a"LOBAT"indicationwillappearon

the lower right corner of the display when the

batteries are weak (<10%). All four batteries

needtobereplaced.

When the batteries are too weak to ensure

reliable measurements, the message 0% LO

BAT appears for a few seconds, and then the

meter will automatically switch itself off. Re-

place the batteries immediately.

LOBAT

LO BAT

LOG LOBAT

TIME

DATE

LOGGING

MICROPROCESSOR

TURBIDITYMETER

LOGGING

MICROPROCESSOR

TURBIDITY METER

HI 93703-11

VIEWVIEW

STOSTO

CLRCLR

GLPGLP

CALCAL DATEDATE

READREAD

ALTALT

OFF

188

FUNCTIONALDESCRIPTION

1) Measurementcell

2) LCD(LiquidCrystalDisplay)

3) ON/OFF/CLR key, to turn the meter ON

and OFF, and to clear log memory

4) GLP/CAL key, to display last calibration

date&time,andtoentercalibrationmode

5) STO/VIEWkey,tostoresampleafterread-

ing,and to viewlog memory

6) READ/DATE key, to perform measure-

ments, and to display (toggle) current

date/time

7) ALTkey, toactivate thesecond functions

(secondfunctionkeysinorange)

8) RS232connector(5pin)

*1 FTU =1 NTU

STANDARD SUSPENSION

Presently, there are only two recognized pri-

marystandards:AMCO-AEPA-1andformazine.

Hanna supplies HI 93703-11 with the AMCO-

AEPA-1whichhasamuchlongershelflifeatall

concentrations(approx.sixmonths,iffreefrom

contamination).Inaddition,nospecialhandling

or disposal is required and a much higher

stability of suspended particles has been ob-

served.

On the other hand, formazine is a toxic sub-

stance,generatedbyaknowncarcinogen,with

poor stability (particles flocculate and settle

quickly). Lower concentrations change value

within a few days or hours after dilution.

The consistency of HI 93703-11 readings by

using both standards has been separately es-

tablished by Advanced Polymer Systems and

HannaInstruments.

Additionaldocumentationabouttheformazine

standardandmorecomplexcalibrationproce-

duresis availableupon request.

•All glassware that comes into contact with

standardsshouldbemaintainedclean.Wash

with the HI93703-50 cleaning solution and

rinsewith HI93703-0orturbidityfreewater.

•Rinse the vial twice with 5 ml of the liquid to

be tested. This removes the effect of any

previous liquid and any dust or foreign ob-

jectsthatmaybepresentinside.Gentlypour

theliquiddown theside ofthe vialtoreduce

air bubbles (no mixing is required when HI

93703-0 and HI 93703-10 AMCO-AEPA-1

standardsareused).

•Beforeinsertingthevial intotheinstrument,

wipe it with HI93703-70 or a soft, lint-free

tissue. Handle vials so that no fingerprints

can get on the areas where light passes

(approx.bottom2 cm/1").

SPECIFICATIONS

*1 FTU =1 NTU

Range 0.00to50.00FTU*

50to1000FTU*

Resolution 0.01and1FTU*

Accuracy ±0.5FTU*or

±5% of reading (whichever is greater)

TypicalEMCDeviation ±2%FS

Calibration 3point(0,10and500FTU*)

Light Source InfraredLED

Light Source Life Lifeoftheinstrument

Light Detector Siliconphotocell

DataLogging 199measurements,on-demand

PC Connection Throughserialport,

usingHI920011connectioncableand

HI92000Windows®compatiblesoftware

Battery Type 4x1.5VAAalkalinebatteries

Battery Life Approx. 60 hours of continuous use

or900measurements

Auto-off After5 minutes of non-use

Environment 0to50°C(32to122°F);

RHmax95%non-condensing

Dimensions 220x82x66mm

(8.7 x 3.2 x 2.6")

Weight 510g(1.1lb.)

•Afterapproximately

30secondstheLCD

will display "----".

Now the instrument

is calibrated and

ready for use.

NOTE:If "ERR1"is displayed, thecalibra-

tion data is maintained.

VIEWINGCALIBRATIONDATE

To display the last cali-

bration time and date,

press the GLP button to

toggle through the date

and time. If the display

shows "FS", the instru-

ment has factory calibra-

tion settings loaded and

nodate willbe displayed.

VIEWING FIRMWARE VERSION

To display the firmware version press and

holdtheON/OFFkeyfor

approx. ten seconds

(whenturning themeter

on).

Thefirmwareversionwill

bedisplayed

LOGGING

MICR OPRO CESSOR

TURB IDIT YMETE R

LOGGING

MICR OPRO CESSOR

TURB IDIT Y METER

HI 93703-11

VIEWVIEW

STOSTO

CLRCLR

GLPGLP

CALCAL DATEDATE

READREAD

ALTALT

OFF

ENSUREACCURATECALIBRATION

The procedure below should be carefully fol-

lowedduringtestingandcalibration:

LOGGING

MICR OPRO CESSO R

TURB IDIT YMETE R

LOGGING

MICR OPRO CESSO R

TURB IDIT Y METER

HI 93703-11

VIEWVIEW

STOSTO

CLRCLR

GLPGLP

CALCAL DATEDATE

READREAD

ALTALT

OFF

V1.0

To prepare the instrument for taking

measurements, first install the batteries (see

BatteryReplacementsectiononpage20)and

then turn the instrument on.

To maximize battery-life, the display is

automatically switched off after 5-minutes of

non-use. To reactivate the display, simply

press the ON/OFF key.

MEASUREMENTPROCEDURE:

•Turn the meter on by

pressing the ON/OFF

key.

•The meter will carry

outaself-testdisplay-

ingafullsetoffigures.

•The meter will carry

outabatterytestshow-

ing in percentage the

battery life left.

•When the LCD dis-

plays “----” the meter

is ready to measure.

•Fillacleancuvetuptoonequar-

terinch(0.5 cm)fromitsrimwith

thethoroughlyagitatedsample.

•Allowsufficienttimeforbubbles

to escape before securing the cap.

Note: donot overtighten the cap.

LOGGING

MICR OPROC ESSOR

TURB IDITYMET ER

LOGGING

MICR OPROC ESSOR

TURB IDITY M ETER

HI 93703-11

VIEWVIEW

STOSTO

CLRCLR

GLPGLP

CALCAL DATEDATE

READREAD

ALTALT

OFF

1/4“

0.5 cm

OPERATIONALGUIDE

LOG LOBAT

TIME

DATE %

188

•If "ERR1" appearson

theLCD,pleasecheck

thestandardsolution.

•Afterapproximately30secondsthemeter

will display 10.00, prompting the user to

place the 10.00 FTU standard solution in

the cuvet holder.

•Place the 10.00 FTU

standardintheholderpressCAL,SIPand

CL will start blinking

•After approximately

30secondsthemeter

will display 500, asking the user to place

the 500 FTU buffer

solution in the cuvet

holder.

NOTE: At this point the

user can save the two point calibration

setup by pressing ALT & CAL buttons,

leavingthecalibration mode.

To perform a three point

calibration, place the 500

FTUstandardsolutioninthe

cuvet holder.

•Press CAL, SIP and

CL will start blinking

10.00

sip

500

sip

err1

NOTE:Wipethecuvetthoroughlywithalint-

free tissue (HI93703-70) before in-

serting into the measurement cell.

Thecuvetmustbecompletelyfreeof

fingerprints and other oil or dirt, par-

ticularly in the area where the light

goes through (approx. the bottom

2 cm/1").

•Placethecuvetinto

the cell and check

thatthenotchonthe

capispositionedse-

curely into the

groove.

• The mark on the

cuvet cap should

point towards the

LCD.

•Press the READ key

and the LCD will dis-

play a blinking “SIP”

(Sampling in Pro-

cess). The turbidity

value will appear af-

ter approx. 20 sec-

onds.

LOGG ING

MICR OPRO CESSO R

TURB IDIT YMETE R

LOGG ING

MICR OPRO CESSO R

TURB IDIT Y METER

HI 93703-11

VIEWVIEW

STOSTO

CLRCLR

GLPGLP

CALCAL DATEDATE

READREAD

ALTALT

OFF

To check the date of last calibration, simply

press the GLP/CAL key. Press again to

togglebetween date andtime.

Tomakesurethatthemeteriscalibrated,take

a measure of a standard solution.

Theinstrumentcanbecalibratedat twoorthree

points and a monthly calibration is recom-

mended.

CALIBRATIONPROCEDURE

•Turnthemeteronand

waitforthedisplayto

show"----".

•Press the ALT & CAL

buttonstogether. The

"CAL" message will

blink on the display 3

times.Themeter then

enters the calibration

mode,displaying"0.00

cl"andpromptingthe

usertoinsertthe0.00

FTUstandard.

•Placethe0.00FTUstan-

dard in the cuvet holder

•Press CAL, SIP and

CL will start blinking

LOGG ING

MICR OPROC ESSOR

TURB IDITYMET ER

LOGG ING

MICR OPROC ESSOR

TURB IDITY M ETER

HI 93703-11

VIEWVIEW

STOSTO

CLRCLR

GLPGLP

CALCAL DATEDATE

READREAD

ALTALT

OFF

CALIBRATION

0.00

sip

*1 FTU =1 NTU

• Even though HI93703-11 covers a very

wide range of turbidity values, for very

accurate measurements of samples ex-

ceeding 40FTU*, Standard Methods re-

quire dilution. In such cases, the correct

amount of HI93703-0 or turbidity-free

water to be added to the sample can be

calculated as follows:

Vos = 3000 / T

where: Vos = volume of sample (mL) to be

combined with HI 93703-0 to

obtainthefinalvolumeof100mL.

T = HI 93703 reading (exceeding

40FTU*)

E.g.: HI 93703 reading = 200 FTU *

3000 / 200 = 15 mL (Vos)

15mL(Vos)+85mL(HI93703-0)=100mL

At this point, take a sample of this solution

and measure its turbidity.

The correct turbidity value of the original

sample will be:

Tnx 100 mL / Vos = Ta

where: Tn=new HI 93703reading

Ta=actualturbidityvalueoftheoriginal

sample

E.g. If Tn= 27 FTU *

Ta= 27 FTU *x100 mL / 15 mL = 180 FTU *

NOTE:Anysample takenabove1000FTU will

showoutofrangebyblinking "1000".

*1 FTU =1 NTU

hours(thesample needsto bekept atroom

temperaturepriorto theanalysis).

• To obtain a representative sample, gently,

but thoroughly, mix it before samples are

taken.Donotshake(topreventairbubbles)

and do not let the sample settle.

• Itisrecommendedtocalibratethemeterwith

the supplied HI93703-10 @10 FTU* stan-

dardatleastonceamonthormorefrequently

forgreateraccuracy.

•Before inserting vials into the instrument,

wipe them with HI93703-70 or a soft, lint-

free tissue. Handle vials so that no finger-

prints get on the areas where light passes

(approx. the bottom 2 cm/1 inch).

Ifyouexperienceany problemsintaking mea-

surements, contact your dealer or the nearest

HannaCustomerServiceCenter.

SOURCESOFINTERFERENCE

•Presenceoffloatingdebrisandcoarsesedi-

mentswhichsettleoutrapidly willgivefalse

readings.

•TheinfraredlightsourceusedforHI93703-

11 turbidity meter, complies with the ISO

7027 International Standard and can effec-

tively minimize any errors due to colored

dissolved substances. This effect, called

"true color", is a common interference for

most commercially available instruments

operating in the range of visible light.

•Air bubbles and the effect of vibrations that

disturb the surface of the sample may give

false results and should be avoided.

•Dirty glassware could also affect readings

along with scratched or dented vials.

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