Martek MARK 22 Bedienungsanleitung

MARTEK INSTRUMENTS, INC.

OPERATION MANUAL

MARK 22

IN SITU CALIBRATOR

Rev.NC(1) -10/04



iMartek Instruments, Inc.

Unless otherwise stated, MARTEK INSTRUMENTS, INC. warrants this equipment to

be free fromdefects in material andworkmanship andtoperform in accordance with

applicable specificationsforoneyear fromdate ofshipment.

MARTEK will provide free service atthe factory,including parts, labor and

transportation back to the customer,for any malfunction of its products, whichare

returnedtransportation charges prepaid.

Customers desiring to return aproduct to MARTEK for repair should contact the

Service Department by telephone (919) 790-2371 or fax (919) 790-2375 to obtain return

authorization. Theinformation requiredat this time will be the complete model number

andserial numberof the product andabrief descriptionof the problem.

All shipments to MARTEK must be freight prepaid and addressed as follows:

MARTEKINSTRUMENTS, INC.

5201 Old Poole Rd.

Raleigh, NC 27610

Attn.: Repair Department

Acomplete and detailed statement of the reason for return must accompanythe unit.

Ifpossible, include acopyofsample readingoraprintout.

Returned units must be packed as well as they were when first shipped. If possible,

use the original packing. Do not return detachable cords or manuals with the unit.

MARTEK reserves the right to void this warranty if the product has been subjected to

misuse, neglect, accident,improperinstallation orapplication,andfor consumable

items such as batteries, membranes, or solutions.

This warranty is expressly in lieu of all other obligations or liabilities on the part of

MARTEK. MARTEK neither assumes nor authorizes any other person or organization

to assume on behalf of MARTEK any other liability in connection with the sales of

MARTEK instrumentation.

WARRANTYPOLICY

TABLE OF CONTENTS

Martek Instruments, Inc.

CHAPTER1INTRODUCTIONPAGE

Section1.0 -WhatIsACalibrator?..................................................................................................1

1.1 -HowTheMark22CanBenifitYou..............................................................................1

1.2 -HowToReadTheManual...........................................................................................1

CHAPTER2OVERVIEW

Section2.0 -OperatinalOverview...................................................................................................2

2.1 -"Quick-Cal"CalibrationProcedures.............................................................................4

CHAPTER3SPECIFICATIONS & SETUPPAGE

Section3.0 -Specifications-Measurement......................................................................................5

3.1 -Specifications-Physical...............................................................................................5

3.2 -AccessoriesAndSensors.............................................................................................6

3.3 -SettingUp The Mark 22..............................................................................................8

3.3.1 -ConnectingTheConductivitySensor............................................................................9

3.3.2 -ConnectingThepH Sensor..........................................................................................9

3.3.3 -ConnectingTheTemperatureSensor..........................................................................11

3.3.4 -ConnectingTheRecorderCable................................................................................11

3.3.5 -ConnectingThe BatteryCharger...............................................................................11

CHAPTER4OPERATIONPAGE

Section4.0 -TheMark22ControlPanel.......................................................................................12

4.1 -HowToUseThe Keys..............................................................................................13

4.1.1 -NormalOperatingMode...........................................................................................13

4.1.2 -Set Up Mode............................................................................................................14

4.1.3 -CellMode.................................................................................................................15

4.1.4 -DataLogMode.........................................................................................................15

4.1.5 -PrintMode................................................................................................................15

4.2 -HowToSetUpTheSystem......................................................................................16

4.2.1 -TemperatureCompensationFormulas........................................................................16

4.2.2 -HowToSelectTheConductivity"k"factor................................................................19

4.2.3 -HowToLog Data.....................................................................................................20

4.2.4 -PrintFunctionSetup..................................................................................................21

4.25 -How ToUseThe Recorder Output............................................................................22

iiiMartek Instruments, Inc.

CHAPTER5CALIBRATIONPAGE

Section5.0 -WhyShouldYouCalibrateTheMark22?..................................................................24

5.0.1 -MaterialsRequiredFor Calibration............................................................................24

5.1 -TemperatureCalibration.............................................................................................24

5.1.1 -AutoTemperatureCalibration....................................................................................25

5.1.2 -ManualTemperatureCalibration................................................................................25

5.2 -ConductivityCalibration.............................................................................................27

5.2.1 -ConductivityZeroAdjustment....................................................................................27

5.2.2 -ConductivitySpanCalibration....................................................................................28

5.3 -pHCalibration...........................................................................................................31

5.3.1 -pHZeroAdjustment..................................................................................................31

5.3.2 -pHSpanAdjustment..................................................................................................32

5.4 -HowToSetDateAndTime.......................................................................................32

5.5 -FrequencyOfCalibration...........................................................................................33

CHAPTER6MAINTENANCE&TROUBLESHOOTINGPAGE

Section6.0 -TheReadoutModule.................................................................................................34

6.1 -Sensors....................................................................................................................34

6.2 -TroubleshootingGuide...............................................................................................34

TABLE OF CONTENTS

INTRODUCTION - 1

Martek Instruments, Inc.

1.0WHAT ISACALIBRATOR?

TheMartek Mark22In-SituCalibrator is

acompletely portable,battery-operatedelec-

tronic instrument that can beused tovali-

date the performanceand accuracy of on-

line, process watermonitoring instruments.

TheIn -Situ Calibrator is designedfor usein

applications inwhich the measurement of

water properties such as temperature, con-

ductivity,temperature-correctedconductiv-

ity,and pH arerequired.

The Mark22can becalibrated in the labo-

ratory to ASTM (AmericanSociety for Test-

ingof Materials)or NIST (National Institute

ofStandards and Testing) guidelines and

proceduresusing any manufacturer’scon-

ductivity reference cell or pHelectrode. The

portability ofthe unitallows it to then be

transferredto the sample stream for direct,

on-site monitoring of the waterproperties

used todetermine water quality.

1.1HOW CAN THE MARK 22

BENEFIT YOU?

Byeliminating the needfor physical grab

samples,the Mark 22provides amorereli-

able and efficientmethod for validating

and/or calibrating on-line instrumentation.

Its accuracy and resolutionallow the opera-

tor to detect subtle changes in water chemis-

try thatcanaffect theturbine steam quality ,

the performance ofcondensate polishers,

resin beds, andother process systems.

In addition, the Mark 22 features battery

backed up NVM memoryin which moni-

tored datacan be stored and retrievedlater

by apersonal computer viathe unitsserial

port for storage, review and analysis. As an

alternate recording method, aserial data in-

put printer can be connected to the serial port

ofthe Mark22in applications in which a

hardcopy recordofthe datastored in the

Mark 22In-SituCalibratoris required. This

featureallows the operator to create and

maintain ahistorical record of calibration and

performance datafor on-line instruments.

TheMark22can alsoserve as aback-up

monitoringsystem in the eventof on-line

equipment failure.A0-1 Voltanalog output

signal for all parameters isalso availableto

facilitate the interfaceof theMark 22 directly

to apaperstrip-chart recorder.

1.2HOW TOREAD THIS MANUAL

Carefully review the material in this

manualbefore operatingthe Mark 22. The

OVERVIEW inChapter 2providesbrief de-

scriptions of thefeaturesofthe calibratorand

an example of aquick calibrationprocedure

forconductivity.Chapter3reviewsthespeci-

fications for the instrument and givesade-

taileddescription of how to set upthe unit.

Thecomplete operational instructions are

outlined inChapter 4,andChapter5details

the calibration procedure. The MAINTE-

NANCE &TROUBLESHOOTING chapter

provides routine maintenancerequirements

for the Mark 22and its probes.

Shouldyou haveany questions or com-

mentsregarding the Mark 22,its sensors, or

this Manual, pleasecontactthe factory.

2- OVERVIEW

Martek Instruments, Inc.

2.0OPERATIONAL OVERVIEW

Ashortdescriptionofthe different fea-

tures of the Mark 22 isgiven below.Abbre-

viated instructions are providedforreview

of the connectionsof the conductivity,tem-

perature, and pH sensors and the battery

charger.Adescription ofthe operational fea-

tures provided by the EIGHTkeyson the

front panel isalso presented.Formore de-

tailedinformation on operationandcalibra-

tion procedures, referto the appropriate

chapterswithin the Manual.

1.Connect the Martek conductivityrefer-

ence sensor to the connectors labeled

"COND"and"TEMP" on the side of the

Mark22readout module.

2.Connect the pH sensor tothe connector

labeled "pH"onthe side of the Mark 22

readout module. The temperaturefrom

theMartek conductivity reference sensor

alsoprovides the temperaturefor com-

pensation of the pHmeasurement.If the

Martek conductivityreference sensoris

not used, you must usethe separatetem-

peraturesensorlocated on the pH plug

(P/N 180-51A) or the dip-styletempera-

turesensor(P/N 182-24T).

NOTE: If the pH sensor is not being used, the

shorting plug on the Mark22 readout module

mustbe connected to the pHinputconnector.

This plugconnectsthe input to thepHcircuit to

analoggroundallowingONLYconductivityand

temperaturemeasurementstobemade.

3.Tocharge the internal batteries, (a) con-

nectthe circular plug from the AC bat-

tery charger tothe Mark 22and(b) con-

nect thebattery charger to an 120V/60

Hz AC power outlet.

CAUTION: Make sure the power

switchis OFF when connecting or

disconnecting thebatterycharger.

The power switch can be on or off

when charging the internalbatteries.

4.After all sensor andpower connections

have been made, the Mark 22 can be op-

erated. Flip the switchlabeled POWER

tothe UP position (poweron ). Flip the

switch labeled LAMPto the UP (back-

light on)to illuminate the Mark22’s dis-

play.The Back Lighting Lamp in the Mark

22displayconsumes considerablepower,

andas aresult willlimit the unit's bat-

terypoweredoperating timeto approxi-

matelyFOURhours.With the LampOFF,

the Mark 22will provide reliable opera-

tion for approximately12 hoursormore.

5.The Mark22sequentiallydisplaysdate,

time and battery voltage; correctedcon-

ductivity,rawconductivity andtempera-

ture; and solution compensatedpH,pH

andtemperature. Depress the SELECT

keyandobservethat the letter "M" ap-

pears inthe lower right cornerof the

Mark22display.The "M"indicates that

ManualMode is in operation. The Mark

22 willthen continuouslydisplay the cur-

rently displayedparameter.Depress the

SELECT key again, and the displayed

dataadvances tothe nextset ofparam-

eters .

Depress the EXIT key to exitthe Manual

Mode. Observethat the letter"A" appears

inthe lower right corner ofthe units dis-

play.The letter "A" indicates that the

ManualMode has been exitedandthat

the unitis nowin the Auto Mode of op-

eration.Whenin theAutoMode the Mark

22willcontinuouslyscan through all of

itsmeasuredas wellas manually entered

parameters.

6.The FOURMODE KEYS along the bot-

tom rowofthe frontpanel (SETUP,CELL,

LOG,andPRINT)refer tothe different

modes of operation featured by the Mark

22. Thefourtri-legened FUNCTIONkeys

along the top row of the frontpanel are

useddifferently duringeachmode. Tofa-

cilitate operation of the Mark 22 the func-

OVERVIEW - 2

Martek Instruments, Inc.

tion legends and the associatedmode

have the same colorlegend and border.

In the NormalDisplay Monitoring

Mode the top row of keys with the

WHITE borders are function keys. The

functions providedby thesekeys are

identified by the WHITE key legends lo-

cated just abovethe top row of function

keys. The READ key willholdthe dis-

play in Manual Mode.The RANGE keys

will changethe range for the conductiv-

itydisplay,andthe AUTOkey will restart

the automatic display monitoringmode.

In the SetupMode the top rowof keys

areused as function keys.The functions

provided bythese keys areas indicated

by the YELLOW key legends located on

eachof the function keys.The SELECT

keyis usedtoselect options from thedis-

playedmenu. The UP ARROW key

moves the blinking display down

throughthe menus and increments the

numericdigitswhen adjustmentof the

displayed numeric value is required. The

DOWN ARROW key moves the blink-

ingdisplay upthroughthe menus and

decrements the numeric digits when ad-

justment ofthe displayednumericvalue

is required. The EXIT key allows theuser

tomove backwards through the dis-

playedmenus.

In the CellMode,the top row of keys

function as indicated by the BLUE key

legend located on eachof the top row of

function keys. The K0.01, K0.1, K1 and

the K10 keysare usedtoselect thecell

constant stored forCell#1, Cell #2, Cell

#3andCell #4 respectively.

In the LogMode,the top row of keys

function as indicated by the RED key leg-

endlocated oneach of thetoprow ofkeys.

Tolog data, depressthe LOG key once.

TheMark22willdisplayafilenumber.

Depressthe LOG keyagain,and observe

thatablack square willappear inthe up-

perright corner ofthe display.Thisindi-

cates that the Mark 22 isnow inthe Log

Modeofoperation. Depressthe LOG key

again,andobservethat the black square

isno longer present inthe display.This

indicates that the Mark 22LogModehas

been exited.The FREE will display the

amountof storage memory remainingin

terms of storage time( hours). When in

the LogMode, pressing the PAUSE key

will cause aletter "P"to appear in the right

corner of the display.The Mark 22 will

stop logging but remain in theLogMode.

Thisprocedure is used to conserve

memory.Depress the RESUME function

key to resumelogging data. Finally,The

CLEAR function keywillclear allof the

logged datafrom memory.

7.Depression of the yellow SETUP keyen-

ables the setup mode of operation and

subsequentlyallows the operatoraccess

tothe unit's setup functions.The Setup

functions providedby the Mark 22areas

follows:

CAL (Calibration)option is used for es-

tablishmentofthe zero andspan calibra-

tion points associatedwith temperature,

conductivity andpH measurementsas

well as manualentry of the dateand time

of day parameters.

COMP (Compensation)option provides

theselection of three temperaturecor-

rected conductivity equations: GE, Marsh

&Stokes, and Truman Light in addition

to the slope coefficients for conductivity

andpH.Thisfunction also allowscali-

brationof0-1Volt external recorderout-

put.

CELL option allowsthe operatorto

manually input aspecific cell constantfor

eachof the four nominal cell constants.

Forultrapure water,thenominal cellcon-

stant is0.01.

The LOG optionallows the operatorto

manually enter the start timeto begin log-

ging data,the logging interval (the time

inminutes betweenscans), andthe num-

2- OVERVIEW

Martek Instruments, Inc.

ber of scans.

8. The PRINT Mode allowsprintingof the

variousdatafiles byfile number.Toprint

orrecord datafrom the Mark 22's inter-

nal memory the unitmust beconnected

via its serial portto computeror printer

whichhas aserialinput interface. This

interface must be configured with the

samebaudrate,#of data bits, stop bits,

andparity type configured inside the

Mark22forserial communications. Re-

fertothesection4.2.4 of this Manual for

moredetailed information regarding the

print function.

2.1"QUICK-CAL"CALIBRATION

PROCEDURE

Thissection provides aneasyreference

or "quick-cal" procedureforelectronically

calibrating the Mark22for conductivity mea-

surements. However,beforeperforminga

calibrationofthe Mark22using this proce-

dure, itis recommended thatyou review

Chapter 5(CALIBRATION )of this manual.

Calibrationproceduresforallparameters

arelocated in the CALIBRATIONsection of

this Manual.

1.Selectacell number for calibration. De-

press the CELL keyandselectacellnum-

ber1-4. (Select aKfactor of .01000 for

ultrapureprocess water applications ).

2.Placethe Mark 22 in Manual Display

Mode for the conductivity parameter.

3.Using the range keys(UP and DOWN

ARROWS), set the decimal point to read

thehighestrange(XXX.XX µS/cm).

4.Selectthe SETUP Mode of operationby

depressing the SETUP key.From the

setup menu select the CAL option.Select

CONDoptionfrom the CALmenu menu

as the type of parameter to becalibrated.

Select ZERO asthetypeofcali-

brationto beperformed. Connectthezero

calibrationplug (P/N 400550) to the test

leads.The voltage should be approxi-

mately-1.000 Volt.Enter the zero value

forconductivity bypressingthe SELECT

key andentering000.00 µS/cm.

5.Exitthe set ZERO point function by de-

pressingthe EXITkey.Using the range

keys (UP and DOWN ARROWS), set the

displayed measured value to the lowest

range (0.0000 µS/cm).

6.Selectthe SETUP Mode of operationby

depressing the SETUP key.From the

setup menu select the CAL option.Select

CONDfrom the displayed menu as the

parameter tobecalibrated. Select SPAN

as the type of cali-bration to be per-

formed. Removethe zerocalibration plug

andmake sure the span calibration plug

(P/N 400549) has been placed between

thetestleads. The voltage should beap-

proximately+0.5000 Volts. Enter the span

value for conductivity by pressing the SE-

LECT key and entering1.0000 µS/cm.

7.At thispoint, the Mark 22 isnow cali-

brated forconductivityfor anysensoruti-

lizing acell constant of 0.01.Butbefore

measurements can be taken, depressthe

CELL key and select acell with the same

cellconstant as the specific conductivity

reference sensor.Depress the CELL key

again toreturn theMark22tothe manual

display mode.

NOTES:

1. If not using aMartek Conductivity Reference

Cell, the temperature sensor mustbe connected.

2. Temperaturemust always be calibrated before

conductivity and pH.

3. Use a1KOhm, .5% resistorfor10 µS/cmrange.

4. Use a100 Ohm, .5%resistor for 100 µS/cm

range.

SPECIFICATIONS AND SETUP- 3

Martek Instruments, Inc.

3.1 SPECIFICATIONS -PHYSICAL

Case Dimensions:

Front Panel -7.0x6.5x4.0 inch

(17.8 x16.5x10.1cm)

LWH

Case Weight: 6lbs. (2.1 kg)

Power Requirement:

6Volt DC power

120 or 230 Volt ACwhen

the factorysupplied

batterycharger is used.

3.0SPECIFICATIONS -MEASUREMENT

Parameter Range Resolution Accuracy

Temperature0-100°C±0.01° C±0.1° C

Conductivity*0-1.0000 µS/cm±0.0001 µS/cm±0.001 µS/cm

0-10.000 µS/cm±0.001 µS/cm±0.01 µS/cm

0-100.00 µS/cm±0.01 µS/cm±0.1 µS/cm

0-1.0000 mS/cm±0.0001 mS/cm±0.001 mS/cm

0-10.000 mS/cm±0.001 mS/cm±0.01 mS/cm

0-100.00 mS/cm±0.01 mS/cm±0.1mS/cm

pH2-12pH±0.01 pH±0.1pH

*The Conductivity measurement accuracy is dependenton entry of the appro-

priate cell constant for the indicated range of measurement andon the quality

ofthe electrode used.

Recorder Output:

RS 232C Serial ASCII

or0-1voltDCanalog

output.

3 - SPECIFICATIONS AND SETUP

Martek Instruments, Inc.

3.1ACCESSORIES AND SENSORS

TheMark 22In SituCalibratorcomes complete fromthe factorywith the following

accessories:

Mark 22 with Carrying

Strap (P/N 182-10) BatteryCharger

(P/N 221042) Recorder Cable

(P/N 603050)

If any of theseitems aremissing, contact the factory immediately.

pH Interconnect Cable for

BNC pH Sensor

(P/N 603052)

ConductivityInterconnect

Cable (P/N 603051) Calibration Plugs for ZERO

(P/N 400550) and SPAN

(P/N 400549)

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