Martek MARK 22 User manual

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 [phone] or fax [phone] 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

ii
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

1
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
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-

3
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-

4
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.

5
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.

6
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)