Hanna Instruments GROCHEK COMBO User manual

Instruction Manual
(HI 981404, HI 981405)
pH & TDS/EC Monitors
with Visual Alarm
http://www.hannacan.com TheseInstrumentsarein
Compliancewiththe CE Directives
HannaInstrumentsreservestherighttomodifythedesign,construction
andappearanceofitsproductswithoutadvancenotice.
WARRANTYWARRANTY
HI981404and HI981405arewarranted fortwoyearsagainst
defectsinworkmanshipandmaterials when used for their intended
purposeand maintained according to instructions.Theprobesare
warranted for a period of one year. This warranty is limited to
repairorreplacementfree ofcharge.
Damages due to accident, misuse, tampering or lack of prescribed
maintenancearenot covered.
Ifserviceis required,contactthedealer fromwhomyoupurchased the
instrument.Ifunderwarranty, report the modelnumber,dateofpur-
chase,serialnumberand the nature of thefailure.Iftherepairis not
coveredbythe warranty,youwillbe notifiedofthecharges incurred.If
theinstrumentistobe returned to Hanna Instruments, firstobtaina
ReturnedGoodsAuthorization NumberfromtheCustomerService de-
partmentandthen senditwithshipment costsprepaid.Whenshipping
anyinstrument,makesureitis properlypackagedfor completeprotec-
tion.
Tovalidate yourwarranty,fill outandreturntheenclosedwarrantycard
within14 daysfromthe dateofpurchase.
Allrightsarereserved.Reproductionin whole or in part is prohibited
without the written consent of the copyright owner, Hanna Instru-
mentsInc.
DearCustomer,
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].
These instruments are in compliance with the directives
EN 50081-1 and EN 50082-1.
Remove the instrument from the packing material and
examine it carefully. If any damage has occurred during
shipment, immediately notify your Dealer or the nearest
Hanna Customer Service Center.
The meter is supplied with:
•HI 1286 pH electrode
•HI 1283 grounding probe
•HI7634 TDS probe(HI 981404)
•HI7632 EC probe (HI 981405)
•Calibrationscrewdriver
•12 VDC power adapter
Note: Conserve all packing material until the instrument
hasbeen observed to function correctly.Any defective
item must be returned in its original packing.
PRELIMINARY EXAMINATIONPRELIMINARY EXAMINATION
HI981404(pH and TDS) and HI981405(pH and EC) are
specially designed to meet the needs of simple continuous
monitoring.
The housing has an IP54 rating.
You can simply install the meter above the sample to be
testedfor continuous measurement.
The HI 1286 gel-filled pH electrode is replaceable and the
BNCconnector is protectedbehind a waterproofsheath. The
uniquedesign of the electrode provides longer lifein aggres-
sivesolutions.
You can select your own setpoint and be informed when a
dosage is required by a flashing LED alarm.
Measurements are accurate and the meter can be cali-
brated at one or two points for pH and at a single point for
TDS and EC.
You no longer need to worry about battery changes either:
the unit runs without interruption on 12 VDC supplied
adapter.
GENERAL DESCRIPTIONGENERAL DESCRIPTION
FUNCTIONAL DESCRIPTIONFUNCTIONAL DESCRIPTION
1. Liquid Crystal Displays
2. Alarm LED for pH and PPM / EC
3. pH 7.0 calibration trimmer
4. pH4.0/10.0 calibration trimmer
5. EC/ TDS calibration trimmer
6. BNCconnector
7. Protectivesheath
8. HI1286
9. HI 1283 - Grounding probe
10. HI7632 /HI 7634
11. Power supplyconnector
12. 12 VDC power adapter
5.8
pH
1190
HI 981404 / HI 981405HI 981404 / HI 981405
Range 0.0 to 14.0 pH
Resolution 0.1 pH
Accuracy(@ 25°C/77°F) ±0.2 pH
Setpoint 3.0 to 7.0 pH
Alarm LED blinks when pH is higher than setpoint
Calibration Manual at 1 or 2 points
Probes HI 1286 replaceable pH electrode and HI
1283 grounding probe (included)
Power supply External 12 VDC (adaptor included)
Dimensions 165x 110 x 35mm (6.5 x 4.3 x 1.4’’)
Weight 300g (10.6 oz.)
HI 981404 onlyHI 981404 only
Range 0 to 1990 mg/L (ppm)
Resolution 10mg/L(ppm)
Accuracy(@ 25°C/77°F) ±2% f.s.
TDSFactor 0.7 ppm = 1 µS/cm
Temp.Compensation Automatic 5 to 50°C
(41 to 122°F, TDS only)
Setpoint 500to 1600 mg/L(ppm)
Alarm LED blinks when TDS is lower than setpoint
Calibration Manual at 1 point
Probe HI7634 TDS probe (included)
HI 981405 onlyHI 981405 only
Range 0.00 to 9.99 mS/cm (EC)
Resolution 0.01 mS/cm (EC)
Accuracy(@ 25°C/77°F) ±2% f.s.
Temp. Compensation Automatic 5 to 50°C
(41 to 122°F, EC only)
Setpoint 1.00 to 3.50 mS/cm (EC)
Alarm LED blinks when EC is lower than setpoint
Calibration Manual at 1 point
Probe HI7632 EC probe(included)
SPECIFICATIONSSPECIFICATIONS
5.8 pH 1190
1
2
3
45
6
7
8
9
11
10
12

CE DECLARATIONCE DECLARATION
OF CONFORMITYOF CONFORMITY
RecommendationsforUsers
Before using this product, make sure that it is entirely suitable for the environment in
whichitis used. Operationof thisinstrumentinresidential areas could causeunaccept-
ableinterferencestoradioandTVequipment.
Theglassbulbattheendoftheelectrodeissensitivetoelectrostaticdischarges.Avoidtouching
thebulbatalltimes.Duringoperation,ESDwriststrapsshouldbeworntoavoidpossible
damagetotheelectrodebyelectrostaticdischarges.
Anyvariationintroducedbytheusertothesuppliedequipmentmaydegradetheinstrument’s
EMCperformance.
Toavoidelectricalshock,donotusethisinstrumentwhenvoltageatthemeasurementsurface
exceeds24VACor60VDC.Toavoiddamageorburns,donotperformanymeasurementin
microwaveovens.
ACCESSORIESACCESSORIES
HI1286 Double junction, plastic body pH electrode
with 2 m (6.6’) cable and BNC connector
HI70004P pH 4.01solution, 20 mL sachet(25 pcs)
HI70007P pH 7.01solution, 20 mL sachet(25 pcs)
HI70031P 1.41EC (mS)solution,20 mL sachet(25pcs)
HI70442P 1500 ppmsolution, 20 mLsachet (25 pcs)
HI7004L pH 4.01 solution, 460 mL bottle
HI7007L pH 7.01 solution, 460 mL bottle
HI7031L 1.41 EC (mS/cm)solution, 460mL bottle
HI70442L 1500 ppm solution, 460 mL bottle
HI7061L Electrode cleaning solution, 460 mL bottle
HI710005 12 VDC power adapter, US plug
HI710006 12 VDC power adapter, European plug
HI710012 12 VDC power adapter, Australian plug
HI710013 12 VDC power adapter, Southern Africa plug
HI710014 12 VDC power adapter, UK plug
ISCOMBOR2 10/99PRINTED IN PORTUGAL
OPERATIONAL GUIDEOPERATIONAL GUIDE
pH ELECTRODE CONNECTION
•Slide the protective sheath down. Connect the pH elec-
trode to the BNC connector and then slide the protective
sheath back up all the way up to the casing. For
maximum waterproof protection, make sure the connector
iscompletelycovered.
•Do not be alarmed if white crystals appear around the
electrode protective cap. This is normal with pH electrodes
and they dissolve when rinsed with water.
In order to protect the instrument against vapors and humid-
ity,the BNC connector is shielded behind awaterproof sheath.
TAKING MEASUREMENTS
•Turn the meter on by connecting the 12 VDC power
adapter to the meter and the mains.
•Remove the protective cap from the pH electrode.
•Immerse the tips (4cm/1½”) of pH electrode, EC/TDS
probe and ground probe
inside the sample. In or-
derto ensureaccuracy of
measurements, probes
shouldnottouch orstand
close to the sample
vessel’swalls orbottom.
•The2 LCD’s willshowthe
pH and EC/TDS value .
Any initial measuring
variation maybe due to
pH electrode condition-
ing and EC/TDS
temperature compensation. Allow the readingsto stabilize.
ADJUSTING THE SETPOINT
With HI 981404 and HI 981405 you can select your own
setpoint and be alerted with the pH or EC/TDS LED alarm
when an abnormal situation arises.
• Unscrew and remove the rear panel and gasket seal to access
the MEASURE/SET switch and move it to the left (SET).
•With a small screwdriver adjust the setpoint trimmer to
display the desired value on the LCD. You can choose to
adjust one or both setpoints at once inside the following
ranges:
pH:from3.0 to7.0
EC:from1.00to 3.50 mS/cm
TDS:from500to1600 ppm
pHLED blinkswhen measurement exceedsthesetpoint.
•Move the switch to MEASURE mode and secure back the
rear panel properly replacing the gasket.
pH ELECTRODE MAINTENANCE
•Whennot in use,rinse the electrodewith water tominimize
contamination and store it with a few drops of storage
(HI 70300) or pH 7 (HI 7007) solution in the protective
cap. Always replace the protective cap when not in use.
DO NOT USE DISTILLED OR DEIONIZED WATER FOR STOR-
AGE PURPOSES.
•If the electrode has been left dry, soak the tip in a storage
(HI 70300) or pH 7 (HI 7007) solution overnight to
reactivate it.
•To minimize clogging and provide longer life for the pH
electrode, it is recommended to clean it at least once a
month. Immerse thetip of theelectrode in HI7061forhalf
an hour and then rinse it with tap water.
EC/TDS PROBE MAINTENANCE
Thefollowing cleaningprocedure is recommendedat leastonce
a month:
•Immerse the tip of the electrode in HI 7061 Cleaning
Solution for half an hour.
•If a more thorough cleaning is required, brush the metal
pins with very fine sandpaper.
•After cleaning, rinse the probe with tap water.
The instrument must be recalibrated whenever:
a) After cleaning or replacing the probe.
b) Where high accuracy is required.
c) At least once a month
pH CALIBRATION
Pour small quantities of pH 7.0 (HI 7007) and pH 4.0
(HI 7004) solution into two clean beakers.
CALIBRATIONCALIBRATION
Foraccurate calibrationuse twobeakers for each buffer solution,
the first one for rinsing the tip of the electrode and the second
one for calibration.
•Turn the meter on and make sure that the MEASURE/SET
switch is on the MEASURE mode.
•Remove the protective cap from the electrode, rinse and
immerseit in a pH 7.0 buffer. Stir gently and thenwait for
the reading to stabilize.
Note: the electrode should be submerged approximately 4
cm (1½”) in the solution.
•Adjust the right hand trimmer (pH 7pH 7) with the calibra-
tion screwdriver until the LCD shows pH 7.0.
•Rinse and immerse the pH electrode in pH 4.0 buffer and
stir gently.
•Wait a couple of minutes and then adjust the left hand
trimmer(pH 4pH 4)until theLCD showsthe valueof thesecond
buffer.
The pH calibration is now complete.
EC/TDSCALIBRATION
•Turnthe meter on and make sure thatthe MEASURE/SET
switch is on the MEASURE mode.
•Pour a small quantity of calibration solution* in a beaker.
If possible, use plastic beakers to minimize any EMC
interference.
*1.41 mS/cm for HI981405;1500ppm for HI 981404.
•Immerse the EC/TDS probe in the solution, making sure
that the metal pins are completely submerged.
Note: in order not to affect the accuracy of measurements, it
is important that probe body does not touch nor stand
close to the side walls of the beaker.
•Waitfor a couple of minutes for thermal equilibrium tobe
reached and the temperature to be compensated.
•Tap the probe gently on the bottom, then shake it while
rotating to make sure no air bubbles have remained
trapped.
•Adjustthe calibration trimmer with a screwdriver untilthe display
shows1.41mS/cm(HI981405)or1500ppm(HI981404).
•Calibrationis now complete.
HI981404 HI981405
4 cm
TDS/EC LED blinks when measurement falls below the setpoint.
SET MEASURESET MEASURE
pHTDS/EC