Hanna Instruments HI 98127 User manual

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Hanna Instruments reserves the right to modify the design, con-
struction and appearance of its products without advance notice.
WARRANTYWARRANTY
WARRANTYWARRANTY
WARRANTY
HI 98127 and HI 98128 are warranted for one year
against defects in workmanship and materials when
used for their intended purpose and maintained ac-
cording to instructions. The electrode is warranted
for a period of six months. 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 purchase, 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 re-
turned to Hanna Instruments, first obtain a Returned
Goods Authorization Number from the Customer
Service department and then send it with shipment
costs prepaid. When shipping any instrument, make
sure it is properly packaged for complete protection.
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 Instruments Inc., Woonsocket,
Rhode Island, 02895 , USA.
Instruction Manual
HI 98127 - HI 98128
Waterproof
pH & temperature meters
Dear Customer,
Thank you for choosing a Hanna product. This manual
will provide you with the necessary information for a
correct operation. 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.
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 meters are supplied with:
• 4 x 1.5V batteries
• HI 73127 pH electrode
• HI 73128 Tool to remove the pH electrode
Note: Conserve all packing material until the instru-
ment has been observed to function correctly.
Any defective item must be returned in its
original packing.
PRELIMINARY EXAMINATIONPRELIMINARY EXAMINATION
PRELIMINARY EXAMINATIONPRELIMINARY EXAMINATION
PRELIMINARY EXAMINATION
HI 98127 and HI 98128 are waterproof pH and
temperature meters. The housing has been com-
pletely sealed against humidity and designed to float.
All pH readings are automatically temperature com-
pensated (ATC), and temperature values can be
displayed in °C or °F units.
The meters can be calibrated at one or two points
with auto-buffer recognition and against five memo-
rized buffer values.
Measurements are highly accurate with a unique
stability indicator right on the LCD.
A low battery symbol warns the user when the batter-
ies are to be replaced. In addition the Battery Error
Prevention System (BEPS) avoids erroneous reading
caused by low voltage level by turning the meter off.
The HI 73127 pH electrode, supplied with the meters,
is interchangeable and can be easily replaced by the
user.
The stainless steel encapsulated temperature sensor
facilitates faster and more accurate temperature mea-
surement and compensation.
GENERAL DESCRIPTIONGENERAL DESCRIPTION
GENERAL DESCRIPTIONGENERAL DESCRIPTION
GENERAL DESCRIPTION
FUNCTIONAL DESCRIPTIONFUNCTIONAL DESCRIPTION
FUNCTIONAL DESCRIPTIONFUNCTIONAL DESCRIPTION
FUNCTIONAL DESCRIPTION
1. Battery compartment
2. Liquid Crystal Display (LCD)
3. Stability indicator
4. Low battery indicator
5. ON/OFF/MODE button
6. HI 73127 pH electrode
7. Temperature sensor
8. SET/HOLD button
9. Secondary LCD
10. Primary LCD
These Instruments are
in Compliance with
CE Directives
CE DECLARATIONCE DECLARATION
CE DECLARATIONCE DECLARATION
CE DECLARATION
OF CONFORMITYOF CONFORMITY
OF CONFORMITYOF CONFORMITY
OF CONFORMITY
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
areas could cause unacceptable interferences to
radio and TV equipment.
The glass bulb at the end of the electrode is sensitive
to electrostatic discharges. Avoid touching this glass
bulb at all times. During operation, ESD wrist straps
should be worn to avoid possible damage to the
electrode by electrostatic discharges.
Any variation introduced by the user to the supplied
equipment may degrade the instrument’s EMC per-
formance.
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.
ACCESSORIESACCESSORIES
ACCESSORIESACCESSORIES
ACCESSORIES
HI 73127 Replaceable pH electrode
HI 73128 Tool to remove the pH electrode
HI 70004P pH 4.01 solution, 20 mL sachet (25 pcs)
HI 70006P pH 6.86 solution, 20 mL sachet (25 pcs)
HI 70007P pH 7.01 solution, 20 mL sachet (25 pcs)
HI 70009P pH 9.18 solution, 20 mL sachet (25 pcs)
HI 70010P pH 10.01 solution, 20 mL sachet (25 pcs)
HI 77400P pH 4 & 7 solutions, 20 mL sachet (5 each)
HI 7004M pH 4.01 solution, 230 mL bottle
HI 7006M pH 6.86 solution, 230 mL bottle
HI 7007M pH 7.01 solution, 230 mL bottle
HI 7009M pH 9.18 solution, 230 mL bottle
HI 7010M pH 10.01 solution, 230 mL bottle
HI 7061M Electrode cleaning solution, 230 mL bottle
HI 70300M Electrode storage solution, 230 mL bottle
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NotesNotes
NotesNotes
Notes:
• Before taking any measurement make sure the
meter has been calibrated.
• If measurements are taken in different samples
successively, rinse the electrode thoroughly to elimi-
nate cross-contamination; and after cleaning, rinse
the electrode with some of the sample to be mea-
sured.
• To change the temperature unit (from °C to °F),
from measurement mode, press and hold the MODE
button until TEMP and the current temperature unit
are displayed on the lower LCD. Eg. TEMP °C.
Use the SET/HOLD button to change the tempera-
ture unit, and then press MODE button twice to
return to normal measurement mode.
For better accuracy, frequent calibration of the in-
strument is recommended. In addition, the instrument
must be recalibrated whenever:
a) The pH electrode is replaced.
b) After testing aggressive chemicals.
c) Where high accuracy is required.
d) At least once a month.
Calibration buffer setCalibration buffer set
Calibration buffer setCalibration buffer set
Calibration buffer set
• From measurement mode, press and hold the
MODE button until TEMP and the current tempera-
ture unit are displayed on the lower LCD. Eg. TEMP
°C.
• Press the MODE button again to show the current
buffer set: pH 7.01 BUFF (for 4.01/7.01/10.01 cali-
bration) or pH 6.86 BUFF (for NIST 4.01/6.86/9.18
calibration).
• Press the SET/HOLD button to change the buffer
value.
• Press the MODE button to return to normal mea-
suring mode.
Calibration procedureCalibration procedure
Calibration procedureCalibration procedure
Calibration procedure
From measurement mode, press and hold the MODE
button until CAL is displayed on the lower LCD.
Release the button. The LCD will display pH 7.01
USE or pH 6.86 USE (if you have selected the NIST
buffer set). The CAL tag blinks on the LCD.
• For a single-point pH calibration,
place the electrode in any buffer
from the selected buffer set (eg.
pH 7.01 or pH 4.01 or pH
10.01). The meter will recognize
the buffer value automatically.
If using pH 4.01 or pH 10.01,
the meter will display OK for 1
second and then return to mea-
surement mode.
If using pH 7.01, after recognition of the buffer the
meter will ask for pH 4.0 as second calibration
point. Press the MODE button to return to measure-
ment mode or, if desired, proceed with the 2-point
calibration as explained below.
NoteNote
NoteNote
Note: It is always recommended to carry out a two-
point calibration for better accuracy.
• For a two-point pH calibration, place the electrode
in pH 7.01 (or 6.86 if you have selected the NIST
buffer set). The meter will recognize the buffer value
and then display pH 4.01 USE.
Rinse the electrode thoroughly to eliminate cross-
contamination.
Place the electrode in the second buffer value (pH
4.01 or 10.01, or, if using NIST, pH 4.01 or 9.18).
When the second buffer is recognized, the LCD will
display OK for 1 second and the meter will return to
normal measurement mode.
The CAL symbol on the LCD means that the meter is
calibrated.
To reset to the default calibrationTo reset to the default calibration
To reset to the default calibrationTo reset to the default calibration
To reset to the default calibration
To clear a previous calibration, press the ON/OFF/
MODE button after entering the calibration mode.
The lower LCD will display ESC for 1 second and the
meter will return to normal measurement mode. The
CAL symbol on the LCD will disappear. The meter
will be reset to the default calibration.
CALIBRATIONCALIBRATION
CALIBRATIONCALIBRATION
CALIBRATION
BATTERY REPLACEMENTBATTERY REPLACEMENT
BATTERY REPLACEMENTBATTERY REPLACEMENT
BATTERY REPLACEMENT
The meter displays the remaining battery percentage
every time it is switched on. When the battery level is
below 5%, the
- +
symbol on the bottom left of the LCD
lights up to indicate a low battery condition. The batter-
ies must be immediately replaced. If however the battery
level is so low as to cause erroneous reading, the Battery
Error Prevention System (BEPS) will automatically turn
the meter off.
To change the batteries, remove the 4 screws located
on the top of the meter.
Once the top has been removed, carefully replace the
4 batteries located in the compartment while paying
attention to their polarity.
Replace the top, making sure that the gasket is prop-
erly seated in place, and tighten the screws.
pp
pp
pH ELECTRODE MAINTENANCEH ELECTRODE MAINTENANCE
H ELECTRODE MAINTENANCEH ELECTRODE MAINTENANCE
H ELECTRODE MAINTENANCE
• The pH electrode can be easily replaced by using the
supplied tool (HI 73128). Insert the tool into the elec-
trode cavity as shown below.
Remove the electrode by rotating it counterclockwise
and then pulling it out.
Insert a new pH electrode following the above instruc-
tions in reverse order.
• When not in use, rinse the electrode with water to
minimize contamination and store it with a few drops
of storage (HI 70300) or pH 7 (HI 7007) solution in
the protective cap after use. DO NOT USE DIS-
TILLED OR DEIONIZED WATER FOR STORAGE
PURPOSES.
• If the electrode has been left dry, soak in a storage
or pH 7 solution for at least one hour to reactivate it.
• To prolong the life of the pH electrode, it is
recommended to clean it monthly by immersing it in
the HI 7061 cleaning solution for half an hour.
Afterwards, rinse it thoroughly with tap water and
recalibrate the meter.
SPECIFICATIONSSPECIFICATIONS
SPECIFICATIONSSPECIFICATIONS
SPECIFICATIONS
RangeRange
RangeRange
Range HI 98127 0.0 - 14.0 pH
HI 98128 0.00 - 14.00 pH
Temperature 0.0-60.0°C or 32.0-140.0°F
ResolutionResolution
ResolutionResolution
Resolution HI 98127 0.1 pH
HI 98128 0.01 pH
Temperature 0.1°C or 0.1°F
AccuracyAccuracy
AccuracyAccuracy
Accuracy (@20°C/68°F)(@20°C/68°F)
(@20°C/68°F)(@20°C/68°F)
(@20°C/68°F) HI98127 ±0.1 pH
HI98128 ±0.01 pH
Temperature ±0.5°C or ±1°F
TypicalTypical
TypicalTypical
Typical
EMC DeviationEMC Deviation
EMC DeviationEMC Deviation
EMC Deviation pH ±0.02
Temperature ±0.5°C or ±1°F
Temp.Temp.
Temp.Temp.
Temp.
CompensationCompensation
CompensationCompensation
Compensation Automatic
EnvironmentEnvironment
EnvironmentEnvironment
Environment from 0 to 50°C (32 to 122°F); RH 100%
CalibrationCalibration
CalibrationCalibration
Calibration 1 or 2 points with 2 sets of memorized
buffers (pH 4.01/7.01/10.01 or 4.01/
6.86/9.18)
BatteryBattery
BatteryBattery
Battery
Type/LifeType/Life
Type/LifeType/Life
Type/Life 4 x 1.5V with BEPS / typical 350 hours
Auto-offAuto-off
Auto-offAuto-off
Auto-off After 8 min.
DimensionsDimensions
DimensionsDimensions
Dimensions 163 x 40 x 26 mm (6.4 x 1.6 x 1.0”)
WeightWeight
WeightWeight
Weight 85 g (3.0 oz)
ToTo
ToTo
To turnturn
turnturn
turn thethe
thethe
the metermeter
metermeter
meter onon
onon
on andand
andand
and toto
toto
to checkcheck
checkcheck
check batterybattery
batterybattery
battery
statusstatus
statusstatus
status
Press and hold the ON/OFF/MODE button for 2-3
seconds. All the used segments on the LCD will be
visible for a few seconds, followed by a percent
indication of the remaining battery life. Eg. % 100
BATT.
Taking measurementsTaking measurements
Taking measurementsTaking measurements
Taking measurements
Submerge the electrode in the solu-
tion to be tested while stirring it gently.
The measurements should be taken
when the stability symbol on the
top left of the LCD disappears.
The pH value automatically com-
pensated for temperature is
shown on the primary LCD
while the secondary LCD shows
the temperature of the sample.
ToTo
ToTo
To freezefreeze
freezefreeze
freeze thethe
thethe
the displaydisplay
displaydisplay
display
Press the SET/HOLD button for 2-3 seconds until
HOLD appears on the secondary display. Eg. pH 5.8
HOLD.
Press either button to return to normal mode.
ToTo
ToTo
To turnturn
turnturn
turn thethe
thethe
the metermeter
metermeter
meter offoff
offoff
off
Press the ON/OFF/MODE button while in normal
measurement mode. OFF will appear on the lower
part of the display. Release the button.
OPERATIONAL GUIDEOPERATIONAL GUIDE
OPERATIONAL GUIDEOPERATIONAL GUIDE
OPERATIONAL GUIDE
ISTR98127R2 10/01
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