Instruction Manual
HI 98188
USP Compliant
EC, TDS, NaCl, Resistivity,
Temperature Meter
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1
Dear Customer,
Thank you for choosing a Hanna Instruments product.
Please read this instruction manual carefully before using the instruments.
This manual will provide you with the necessary information for correct use of
the instruments, as well as a precise idea of their versatility.
If you need additional technical information, do not hesitate to e-mail us at
tech@hannainst.com or turn to the back cover for our worldwide contact list.
These instruments are in compliance with directives.
WARRANTYWARRANTY
WARRANTY
WARRANTYWARRANTY
The HI 98188 is guaranteed for two years against defects in workmanship and
materials when used for their intended purpose and maintained according to
instructions. Electrodes and probes are guaranteed for six months. This warranty
is limited to repair or replacement free of charge.
Damage due to accidents, misuse, tampering or lack of prescribed maintenance
is 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 problem. If the repair is not covered by
the warranty, you will be notified of the charges incurred. If the instrument is
to be returned to Hanna Instruments, first obtain a Returned Goods Authorization number from the Technical Service department and then send it with
shipping costs prepaid. When shipping any instrument, make sure it is
properly packed for complete protection.
TABLE OF CONTENTSTABLE OF CONTENTS
TABLE OF CONTENTS
TABLE OF CONTENTSTABLE OF CONTENTS
WARRANTY .......................................................................................................................................... 2
PRELIMINARY EXAMINATION ................................................................................................................. 3
GENERAL DESCRIPTION ......................................................................................................................... 4
FUNCTIONAL DESCRIPTION .................................................................................................................. 5
SPECIFICATIONS .................................................................................................................................. 7
OPERATIONAL GUIDE ........................................................................................................................... 9
AUTORANGING ................................................................................................................................... 1 4
TEMPERATURE COMPENSATION ........................................................................................................... 15
CONDUCTIVITY VERSUS TEMPERATURE CHART .. ............ ............ ............................................................. 1 6
USP MEASUREMENT .......................................................................................................................... 1 7
USP MODE PROCEDURES .................................................................................................................... 2 1
USER CALIBRATION ............................................................................................................................ 2 5
GOOD LABORATORY PRACTICE (GLP) ..................................................................................................... 3 3
SETUP .............................................................................................................................................. 3 5
LOG ON DEMAND .............................................................................................................................. 4 7
AUTOLOG ......................................................................................................................................... 5 0
AutoEnd ............................................................................................................................................ 52
TEMPERATURE CALIBRATION (for technical personnel only) ..................................................................... 53
PC INTERFACE ................................................................................................................................... 56
BATTERIES RECHARGING/REPLACEMENT ................................................................................................ 6 3
TROUBLESHOOTING GUIDE ................................................................................................................ 6 5
PROBE MAINTENANCE ........................................................................................................................ 6 6
ACCESSORIES .................................................................................................................................... 6 7
2
PRELIMINARY EXAMINATIONPRELIMINARY EXAMINATION
PRELIMINARY EXAMINATION
PRELIMINARY EXAMINATIONPRELIMINARY EXAMINATION
Remove the instrument from the packing material and examine it carefully to
make sure that no damage has occurred during shipping. If there is any
damage, notify your Dealer or the nearest Hanna Customer Service Center.
Each instrument is supplied with:
• HI 76313 4-ring probe with temperature sensor (4m cable)
• 100 mL Plastic Beaker
• 4 x 1.2 V AA Rechargeable Batteries (inside the instrument)
• HI 710042 Inductive Recharger with power adapter
• HI 7031M 1413 mS/cm calibration standard (230 ml)
• HI 7035M 111.8 mS/cm calibration standard (230 ml)
• Instruction Manual
• Rugged carrying case
Note: Save all packing material until you are sure that the instrument
functions correctly. All defective items must be returned in the original
packing with the supplied accessories.
Hanna Instruments reserves the right to modify the design,
construction and appearance of its products without advance notice.
3
GENERAL DESCRIPTIONGENERAL DESCRIPTION
GENERAL DESCRIPTION
GENERAL DESCRIPTIONGENERAL DESCRIPTION
The HI 98188 instrument is state-of-the-art, heavy-duty conductivity meter,
designed to provide laboratory results and accuracy under harsh industrial
conditions.
The USP standard compliance makes the instrument useful for pure water
determination.
It is provided with a series of new diagnostic features which add an entirely new
dimension to the measurement of conductivity, by allowing the user to dramatically improve the reliability of the measurement:
• 7 memorized standards (0.00 mS/cm, 84.0 mS/cm, 1.413 mS/cm,
5.00 mS/cm, 12.88 mS/cm, 80.0 mS/cm and 111.8 mS/cm) for calibration.
• EC calibration up to five calibration points.
• Messages on the graphic LCD for an easy and accurate calibration.
• Diagnostic features to alert the user when the electrode needs cleaning.
• User selectable “Outside Calibration Range” warning.
• User-selectable “calibration time out” to remind when a new calibration is
necessary.
Moreover, they offer an extended temperature range from –20 to 120 ºC
(–4 to 248 ºF), using temperature sensor inside EC electrode.
This instrument can also measure in Resistivity, TDS and Salinity ranges.
Three salinity modes are available:
sea water scale
Other features include:
• Temperature source selection
• Temperature automatic compensation, linear or non linear user selectable
• Temperature reference selection 15 °C, 20 °C or 25 °C.
• Temperature coefficient set
• Log on demand up to 400 samples
• Auto Log feature up to 1000 records
• Auto Hold feature, to freeze first stable reading on the LCD
• Lock and user setup Fixed range selection
• GLP feature, to view last calibration data for EC, NaCl
• Probe change recognition
• PC interface
• Probe replatinization
.
% NaCl, Practical salinity
and
Natural
4
Front viewFront view
Front view
Front viewFront view
FUNCTIONAL DESCRIPTIONFUNCTIONAL DESCRIPTION
FUNCTIONAL DESCRIPTION
FUNCTIONAL DESCRIPTIONFUNCTIONAL DESCRIPTION
1
2
HI 98188
EC/TDS/NaCl/Resistivity Meter
3
4
5
6
7
ESC
CAL
SETUP
OFF
ON
HELP
RANGE
MODE
RCL
LIGHT
GLP
1) Liquid Crystal Display (LCD).
2) F1, F2, F3 functional keys.
/ keys to manually increase/decrease the parameters or to scroll between
3)
the parameter list.
4) ESC to leave current mode, exit calibration, setup, help. etc.
5) CAL key, to enter/exit calibration mode.
6) RCL key, to enter/exit view logged data mode.
7) SETUP key, to enter/exit SETUP mode.
8) ON/OFF key, to turn the instrument ON and OFF.
9) GLP key, to display Good Laboratory Practice information.
10) LIGHT key to toggle display backlighting.
11) MODE key to toggle between EC and USP or between Salinity ranges.
12) RANGE key, to switch between EC, Resistivity, TDS, NaCl.
13) Help key to enter/exit contextual help.
13
12
11
10
98
5
Top viewTop view
Top view
Top viewTop view
14) Electrode DIN connector.
15) USB connector.
6
SPECIFICATIONSSPECIFICATIONS
SPECIFICATIONS
SPECIFICATIONSSPECIFICATIONS
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* The 0.001 mS/cm EC range and 0.1 MOhms Resistivity range are not available with
the 4m cable probe.
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8
OPERATIONAL GUIDEOPERATIONAL GUIDE
OPERATIONAL GUIDE
OPERATIONAL GUIDEOPERATIONAL GUIDE
INITIAL PREPARATION
The instrument is supplied complete with rechargeable batteries. Proceed with
a complete charging process before starting (see page 63).
To prepare the instrument for field measurements close the serial communication socket with proper stopper (to ensure waterproof protection).
Connect the EC probe to the DIN connector on the top of the instrument. Tighten
the thread ring. Make sure the probe sleeve is properly inserted.
Turn the instrument ON by pressing ON/OFF key.
At start-up the display will show the Hanna logo for a few seconds followed by
the percentage indication of the remaining battery charge and the “Loading
Log...” message, then enters the measurement mode.
The auto-off feature turns the instrument off after a set period (default 30 min)
with no button pressed to save battery life. To set another period or to disable
this feature, see SETUP menu on page 35. The instrument continues to
monitor the inputs and memorize readings if the automatic logging is enabled
and started. To stop autologging press StopLog key or simply power off the
instrument by pressing ON/OFF key.
The auto-off backlight feature turns the backlight off after a set period (default
1 min) with no buttons pressed. To set another period or to disable this
feature, see SETUP menu on page 35.
MEASUREMENTS
Immerse the probe into the solution to be tested. The sleeve holes must be
completely submerged. Tap the probe repeatedly to remove any air bubbles
that may be trapped inside the sleeve.
If needed, press RANGE repeatedly until the desired range (EC, Resistivity,
TDS, Salt) is selected on the LCD.
Allow for the reading to stabilize. The main LCD line displays the measurement
in the selected range, while the temperature is displayed on the lower LCD line.
9
EC range
The conductivity range is from 0 to 400 mS/cm . The actual conductivity range
(the uncompensated conductivity) is up to 1000 mS/cm. The instrument will
display conductivity readings up to 1000 mS.
Note: The symbol in front of the temperature reading means that the
temperature can be entered by the user (Manual option selected in
Setup, or temperature out of range).
Resistivity range
The reciprocal of the conductivity of a material is the resistivity.
TDS range
A conductivity measured value can be corrected to a total disolved solids value
using the TDS factor.
Salinity
The salinity is derived from the conductivity of a sample.
Salt % range
The percent of salinity in a sample is depending of the sample and on the
salinity coefficient.
10
From practical reasons, the salinity of a solution is derived from the salinity of
the seawater. Two methods of calculating the salinity from the conductivity are
suported:
• Natural seawater scale
• Practical salinity scale
Natural sea water scale (UNESCO 1966)
According to the definition, salinity of a sample in ppt is calculated using the
following formula:
where:
R
T
- coefficient;
CT(sample) - uncompensated conductivity at T °C;
C(35;15)= 42914 mS/cm - the corresponding conductivity of KCl solution
containing a mass of 32.4356 g KCl / 1 Kg solution;
r
T
- temperature compensation polynom.
Note: The formula can be applied for temperatures between 10 °C and 31 °C.
To access this range press Mode while in Salinity range until the sea water
scale [SW] is displayed.
Practical salinity scale
This is a practical scale based on the precise measurement of the electrical
conductivity of a range of solution of known salinity.
The relationship derived from the scale relate salinity, conductivity, temperature and pressure and use a solution with a salinity of 35 ‰ as datum point.
This is taken to have a conductivity of 42.914 % mS/cm of 15 °C and
atmospheric pressure.
11
According to the definition, salinity of a sample in psu (practical salinity units)
is calculated using the following formula:
R
T
- coefficient;
CT(sample) - uncompensated conductivity at T °C;
C(35,15)= 42.914 mS/cm - the corresponding conductivity of KCl solution
containing a mass of 32.4356 g KCl / 1 Kg solution;
r
T
- temperature compensation polynom
a0 = 0.008 b0=0.0005
a1 = -0.1692 b1= -0.0056
a2 = 25.3851 b2= -0.0066
a
= 14.0941 b3= -0.0375
3
a
= -7.0261 b4= 0.0636
4
a
= 2.7081 b5= -0.0144
5
c
= 0.008
0
c
= 0.0005
1
X = 400R
Y = 100R
T
T
f (T)= (T-15)/[1+0.0162(T-15)]
Note: • The formula can be applied for salinity values between
0 and 42 psu.
• The formula can be applied for temperatures between
-2 °C and 35 °C.
To reach this range press Mode while in Salinity range until the practical
salinity scale [PSU] is displayed.
12
Notes:
• If the meter displays the top of the range blinking, the reading is out of
range.
• If the stability indicator “ ” blinks, the reading is unstable.
• Make sure the meter is calibrated before taking measurements.
• If measurements are taken successively in different samples, for accurate
readings it is recommended to rinse the probe thoroughly with deionized
water before immersing it into the samples.
• TDS reading is obtained by multiplying the EC reading by the TDS factor,
which has a default value of 0.50. It is possible to change the TDS factor
in the 0.40 to 1.00 range by entering setup mode.
The probes designed to work with this instrument have an internal ID
identificatior. Every time the instrument detects probe changing, it warns the
user to update the cell constant according with the new probe and then
calibrate the EC range.
13
AUTORANGINGAUTORANGING
AUTORANGING
AUTORANGINGAUTORANGING
The EC, Resistivity and TDS scales are autoranging. The meter automatically
sets the scale with the highest possible resolution.
By pressing Lock, the autoranging feature is disabled and the current range is
frozen on the LCD.
The “Range: Locked” message is displayed. To restore the autoranging
option press “AutoRng” functional key again.
The autoranging mode is also disabled by selecting a “fixed range” in the
Setup menu. While in fixed range mode the instrument will display the
readings with the fixed resolution. Maximum 6 digits can be displayed. The
top of the fixed range is displayed blinking when the reading exceeds this
value.
To disable fixed range mode enter Setup and select autoranging mode.
Note: Autoranging is automatically restored if the range is changed, if the
calibration mode is entered, or if the meter is turned off and back on
again.
14
TEMPERATURE COMPENSATIONTEMPERATURE COMPENSATION
TEMPERATURE COMPENSATION
TEMPERATURE COMPENSATIONTEMPERATURE COMPENSATION
Two selectable temparature sources are available: reading directly from the
sensor inside the probe or manual entry.
Three options of compensating temperature are available:
Linear Temperature Compensation: The conductivity of a solution with a
specific electrolyte concentration changes with temperature. The relationship of
the change in conductivity as a function of temperature is described by a
solution’s temperature coefficient. This coefficient varies with each solution and
is user selectable (see Setup mode).
Non Linear Temperature Compensation: for natural water measurements.
The conductivity of natural water shows strong non-linear temperature
behaviour.
A polinomial relationship is used to improve the accuracy of the calculated
results.
Note: Conductivity measurements of natural water can only be performed at
temperature ranging from 0 to 36 °C. Otherwise the “Out T range”
message will be displayed blinking.
No Temperature Compensation (No TC): The temperature shown on the
LCD is not taken into account.
To select the desired option enter Setup menu (see page 35).
If the temperature is out of the -20 °C - 120 °C range the instrument will do
no temperature compensation.
15
CONDUCTIVITY VERSUSCONDUCTIVITY VERSUS
CONDUCTIVITY VERSUS
CONDUCTIVITY VERSUSCONDUCTIVITY VERSUS
TEMPERATURE CHARTTEMPERATURE CHART
TEMPERATURE CHART
TEMPERATURE CHARTTEMPERATURE CHART
The conductivity of an aqueous solution is the measure of its ability to carry an
electrical current by means of ionic motion.
The conductivity invariably increases with increasing temperature.
It is affected by the type and number of ions in the solution and by the viscosity
of the solution itself. Both parameters are temperature dependent. The dependency of conductivity on temperature is expressed as a relative change per
Celsius degree at a particular temperature, commonly as percent per ºC.
The following table lists the temperature dependence of the HANNA calibration buffers.
CºFº0307IH
0
23
5
14
01
05
51
95
61
8.06
71
6.26
81
4.46
91
2.66
02
86
12
8.96
22
6.17
32
4.37
42
2.57
52
77
62
8.87
72
6.08
82
4.28
92
2.48
03
68
13
8.78
1307IH
3307IH
4307IH
5307IH
9307IH
0308IH
1308IH
3308IH
4308IH
5308IH
9308IH
)mc/Sµ(
)mc/Sµ(
)mc/Sµ(
)mc/Sµ(
)mc/Sµ(
)mc/Sµ(
0517
677
46
0228
698
56
0339
0201
76
08401
7411
86
02701
3711
07
05901
9911
17
09111
5221
37
03411
1521
47
07611
8721
67
01911
5031
87
05121
2331
97
09321
9531
18
04621
6831
28
08821
3141
48
03131
0441
68
07331
7641
78
02631
4941
98
07831
1251
09
02141
8451
29
07341
5751
49
00384
00456
0672
00535
00147
0813
00695
00238
5163
00456
00529
3604
00276
00449
5514
00586
00369
5424
00896
00289
7334
00317
00427
00047
00257
00567
00387
00008
00318
00038
00948
00368
00288
00009
002001
9244
001201
3254
000401
7164
009501
1174
009701
5084
008901
2094
008111
0005
008311
6905
007511
0915
007711
6825
007911
3835
008121
9745
009321
5755
16
USP MEASUREMENTUSP MEASUREMENT
USP MEASUREMENT
USP MEASUREMENTUSP MEASUREMENT
Pharmaceutical laboratories working in the US market are obliged to respect
the regulations set down by the US Pharmacopoeia. The 5th supplement of
USP24-NF19 lays down the rules for checking the quality of pure or fully
deionized water used for the production of injection products.
The conductivity of water provides information on its chemical composition. It
is therefore logical that makes this the main parameter to measure.
The conductivity of a water is a measure of the ion mobility through this water.
The conductivity partly depends on the pH, the temperature and the amount
of atmospheric carbon dioxide, witch has been dissolved in water to form ions
(intrinsec conductivity). The conductivity also depends on the chloride, sodium
and ammonium ions initially present in water (extraneous conductivity).
The conductivity (intrinsec and extraneous) of the water is measured at first
stage and compared to values listed in a table to evaluate if the studied water
is suitable or not for use in pharmaceutical applications. If the sample fails
stage 1, additional tests have to be performed (Stage 2 and 3) in order to
determine if the excessive conductivity value is due to intrinsec factors or
extraneous ions.
USP Requirements
Automatic temperature correction must not be used.
Instrument specifications
Minimum resolution of 0.1 mS/cm on the lowest range. Excluding the cell
accuracy, the instrument accuracy must be ±0.1 mS/cm.
Meter calibration
It is accomplished by replacing the conductivity cell with precision resolution
traceable to primary standards (accurate to ±0.1 % of the stated value) or
an equivalently accurate resistance device.
Cell calibration
Meter conductivity must be measured accurately using calibrated instrumentation. The conductivity cell constant must be known in ± 2 %.
Before starting water analyze calibrate the EC lowest range or set the probe
cell constant (enter the value written in the calibration certificate delivered
with the probe).
Stage 1
Determine the temperature and conductivity of the water.
• Rinse the probe carefully with deionized water. Check that the 4 rings and
the temperature sensor are immersed in the sample and that no air bubbles
17
are trapped. Connect the probe to the meter enter USP mode and press the
Stage 1 key. The instrument will perform a temperature and conductivity
measurement (using a non-temperature corrected conductivity reading).
• Using the Stage 1 temperature and conductivity requirement table the
corresponding conductivity limit at that temperature is determined.
• If the measured conductivity is no greater than the table value the water
meets the requirements of the test for conductivity. If the conductivity is
higher than the table value, proceed with stage 2.
Stage 1 table
Temperature and conductivity requirements *
(for the non-temperature compensated conductivity measurements only)
(*) Values from USP - NF Fifth Supplement
erutarepmeT
C°
06.0
58.0
09.0
010.1
511.1
023.1
524.1
035.1
537.1
048.1
549.1
051.2
552.2
064.2
565.2
077.2
577.2
087.2
587.2
099.2
0011.3
ytivitcudnoC
Sµ
mc/
Physical Tests / Water Conductivity (645) 3465-3467
18
Stage 2
Determine the influence of CO
2
Note: Stability criteria <0.5 %/min corresponds in fact to a change in
conductivity <0.02 mS/cm per minute (equivalent to 0.1 mS/cm per
5 minutes), as required in the Stage 2 USP document.
• Transfer a sufficient amount of water (100 mL or more) to a thermostatic
vessel, and stir the test specimen. Adjust the temperature and maintain it
at 25 ±1 ºC. We recommend using a thermostatic bath.
• Rinse the cell carefully with deionized water. Place the conductivity probe
on the Sample and dip it in the thermostatic vessel containing the sample.
Check that the 4 rings are immersed in the solution.
• Press Step 2.
• When the conductivity value is stable, if the conductivity is not greater than
2.1 mS/cm the water meets the requirements of the test, for conductivity.
If the conductivity is greater than 2.1 mS/cm proceed with stage 3.
Stage 3
Determine the combined effect of the CO2 and pH.
Use a Hanna Instruments pH meter.
Take care that the instrument be calibrated in at least two points using
pH 4.01 and pH 7.01 Hanna buffers.
Perform the following test within approximately 5 minutes of the conductivity
determination while maintaining the sample temperature at 25±1 ºC.
• Add the Saturated KCl Solution to the same (0.3 mL per 100 mL of the test
specimen), and determine the pH to the nearest 0.1 pH unit.
• Press Stage 3 key, then enter the corresponding pH reading.
• Referring to the Stage 3 pH and conductivity requirement table the
instrument determines the conductivity limit at the measured pH value. If
the measured conductivity is no greater than the conductivity requirements
for the pH determined the water meets the requirements of the test for
conductivity. If the measured conductivity is greater than this value or the
pH is outside of the range of 5.0 to 7.0, the water does not meet the
requirements of the test for conductivity.
19
Stage 3
pH and conductivity requirements
(For atmosphere and temperature equilibrated samples only)
Hp
0.57.4
1.51.4
2.56.3
3.53.3
4.50.3
5.58.2
6.56.2
7.55.2
8.54.2
9.54.2
0.64.2
1.64.2
2.65.2
3.64.2
4.63.2
5.62.2
6.61.2
7.66.2
8.61.3
9.68.3
0.76.4
ytivitcudnoC
Sµ
mc/
20
USP MODE PROCEDURESUSP MODE PROCEDURES
USP MODE PROCEDURES
USP MODE PROCEDURESUSP MODE PROCEDURES
Press Mode key while in EC range to enter USP mode.
The instrument will display the USP main screen.
Press Stage 1 to start with first stage evaluation.
Press Stage 2 to start with second stage evaluation.
If Stage 1 is pressed a tutorial screen is displayed.
Use the Arrow keys to scroll the tutorial message.
Press Continue to skip the tutorial message and enter EC measuring mode.
If the temperature source is manual entry, press USP Fact. to select USP factor
to be changed (the is displayed before the 100% value). To increase the
accuracy of the analyze decrease the USP factor value.
Wait until reading is stable.
If the sample reading met the USP stage 1 criteria, the “USP Met” message
will be displayed.
Press Report to view report.
21
Press Log to memorise USP Stage 1 report.
The record number and the amount of free log space in % is displayed for few
seconds.
Note: If the log space is full enter view logged data mode by pressing RCL
key and free log space by deleting previously memorized records.
If the sample reading didn’t meet the USP stage 1 criteria, the
“USP Not Met” message is displayed.
Press ESC to return to the USP main screen.
Press Report to view USP report.
Press Log to memorise the Stage 1 report.
Press Stage 2 to enter USP stage 2 mode.
The USP Stage 2 tutorial screen is displayed.
Use the Arrow keys to scroll the tutorial message.
Press Continue to skip the tutorial message and enter USP Stage 2 measur-
ing mode.
22
Wait until the reading is stable (about 5 minutes).
Note: If the input record has an instability higher than 1mS, stability period
will be reset. The completion time bar will remain empty.
The “USP Met” message will be displayed if the USP stage 2 criteria is reached.
Press Report to view the USP report.
Press key to scroll the report screens.
Press Log to memorise report.
Notes:• The record number will be the same as at the Stage 1 report
(informations of the same analyse).
• If the log space is full enter view logged data mode by pressing
RCL key and free log space by deleting previously memorized records.
The “USP Not Met” message is displayed if the USP stage 2 criteria is not met.
Press Report to view report.
Press key to scroll the report screens. Press Log to memorise report.
Press Stage 3 to enter in stage 3 water analyze.
The USP Stage 3 tutorial is displayed.
23
Press Continue to enter USP Stage 3 analyze.
The instrument will display the sample pH setting mode.
Use a calibrated pH meter to read the pH value of the sample.
Use ARROW keys to set the value to that red from the pH meter.
Press Accept to confirm the pH setting.
The USP Stage 3 report will be displayed.
The report will include all stages information.
Press key to scroll the report pages .
Press Log to memorise the report.
Press ESC to return to USP main screen.
Notes:• The Stage 3 report will include the information about Stage 1 and
Stage 2.
• If the log space is full enter view logged data mode by pressing
RCL key and free log space by deleting previously memorized records.
24
USERUSER
CALIBRATION CALIBRATION
USER
CALIBRATION
USERUSER
CALIBRATION CALIBRATION
To enter User Calibration screen press CAL key while in EC or Salinity range.
From EC range
Press the corresponding functional key to enter:
• EC user calibration.
• Probe replatinization.
• Temperature user calibration.
From Salinity % range
Press the corresponding functional key to enter:
• Salinity % user calibration.
• Temperature user calibration.
25
ECEC
CALIBRATION CALIBRATION
EC
CALIBRATION
ECEC
CALIBRATION CALIBRATION
It is recommended to calibrate the instrument frequently, especially if high
accuracy is required.
The EC range should be recalibrated:
• Whenever the EC electrode is replaced.
• At least once a week.
• Before USP measurement.
• After testing aggressive chemicals.
• When calibration alarm time out is expired - “CAL DUE” blinks (if feature
is enabled in SETUP).
• If “Outside Cal Range” message blinks during EC measurement (the
measurement range is not covered by current calibration, if feature is
enabled in SETUP).
Note: TDS and Resistivity readings are automatically derived from the EC
reading and no specific calibration is needed.
PROCEDURE
HI 98188 instrument offers a choice of 7 memorized standards (0.00 mS/cm,
84.0 mS/cm, 1.413 mS/cm, 5.00 mS/cm, 12.88 mS/cm, 80.0 mS/cm and
111.8 mS/cm).
For accurate EC measurements, it is recommended to perform a calibration in
maximum allowed points. However, at least a two-point calibration is suggested
(offset calibration in 0.00 mS and one in any other calibration standard).
The instrument will automatically recognize the standards and skip the standard used during calibration.
• If a five-point calibration is performed, one of the points must be 0.0 mS (offset).
• Pour small quantities of selected standard solutions into clean beakers. For
accurate calibration use two beakers for each standard solution, the first one
for rinsing the electrode and the second one for calibration.
• Remove the protective cap and rinse the electrode with some of the
standard solution to be used for the first calibration point.
FIVE-POINT CALIBRATIONFIVE-POINT CALIBRATION
FIVE-POINT CALIBRATION
FIVE-POINT CALIBRATIONFIVE-POINT CALIBRATION
• It is better to perform the first point calibration as offset calibration.
• Tap the probe repeatedly to remove any air bubbles that may be trapped
inside the sleeve.
• For offset (zero) calibration, just leave the dry probe in the air.
26
• From EC range press CAL to enter calibration screen.
• Leave the probe in the air and press EC. The instrument will display the
measured EC on the LCD, first expected standard and the temperature reading.
• If necessary, press the ARROW keys to select a different standard value.
• The “ ” tag will blink on the LCD until the reading is stable.
• When the reading is stable and close to the selected buffer, CFM functional
key is displayed.
• Press CFM to confirm first point.
• The calibrated value and the second expected standard value is then
displayed on the LCD.
• After the first calibration point is confirmed, immerse the EC electrode into the
second standard solution and stir gently. Tap the probe repeatedly to
remove any air bubbles that may be trapped inside the sleeve. The
instrument will automatically detect the standard after few seconds the
reading is stable.
• If necessary, press the ARROW keys to select a different standard value.
• The “ ” tag will blink on the LCD until the reading is stable.
• When the reading is stable and close to the selected standard, the CFM
27
functional key is displayed.
• Press CFM to confirm calibration.
• The calibrated value and the third expected standard value will be
displayed.
• After the second calibration point is confirmed, immerse the EC electrode
into the third standard solution and stir gently. Tap the probe repeatedly
to remove any air bubbles that may be trapped inside the sleeve.
The instrument will automatically detect the standard value.
• If necessary, press the ARROW keys to select a different standard value.
• The “ ” tag will blink on the LCD until the reading is stable.
• When the reading is stable and close to the selected standard, the CFM
functional key is displayed.
28
• Press CFM to confirm calibration.
• The calibrated value and the fourth expected standard value will be displayed.
• After the third calibration point is confirmed, immerse the EC electrode into
the fourth standard solution and stir gently. Tap the probe repeatedly to
remove any air bubbles that may be trapped inside the sleeve.
• The instrument will automatically detect the standard value.
• If necessary, press the ARROW keys to select a different standard value.
• The “ ” tag will blink on the LCD until the reading is stable.
• When the reading is stable and close to the selected standard, the CFM
functional key is displayed.
• Press CFM to confirm calibration.
• The calibrated value and the fourth expected standard will be displayed.
29
• After the fourth calibration point is confirmed, immerse the EC electrode into the
fifth standard solution and stir gently.
• If necessary, press the ARROW keys to select a different standard value.
• The “ ” tag will blink on the LCD until the reading is stable.
• When the reading is stable and close to the selected standard, the CFM
functional key is displayed.
• Press CFM to confirm calibration.
• The instrument stores the calibration values and returns to normal mea-
surement mode.
FOUR, THREE or TWO-POINT CALIBRATION
• Proceed as described in “FIVE-POINT CALIBRATION” section.
• Press CAL or ESC after the appropriate accepted calibration point. The instru-
ments will return to measurement mode and will memorize the calibration data.
ERROR SCREENS
Wrong standard
The calibration cannot be confirmed.
The EC reading is not close to the selected standard. Select another standard
using the ARROW keys.
30
CLEAR CALIBRATION
Press Clear functional key when displayed to clear old calibrations.
All old calibrations, are cleared and the instrument continues calibration. The
points confirmed in current calibration are kept.
Note: If Clear calibration is invoked during the first calibration point, the
instrument returns to measurement mode.
REPLACE CALIBRATION STANDARD
Each time a standard is confirmed the new calibration parameters replace the
old calibration parameters of the corresponding standard.
If the current standard has no correspondance in the existing stored calibration structure and this is not full, the current standard is added to the existing
stored calibration (up to 5 standards).
If the existing stored calibration is full (five calibration points) after confirming
the calibration point, the instrument will ask wich buffer will be replaced by
current standard.
Press ARROW keys to select another standard to be replaced.
Press CFM to confirm the standard that will be replaced.
Press CAL or ESC to leave replace mode. In this case, the standard will not
be memorised.
Note: The replaced standard is not removed from calibration list and it can
be selected for the next calibration points.
NaCl CALIBRATION
NaCl calibration is a one-point procedure in 100.0% NaCl solution. Use
the HI 7037L calibration solution (sea water solution) as a 100% NaCl
standard solution.
• To enter NaCl calibration select the Salinity % range and press CAL.
31
• The instrument enters the Salinity calibration screen.
• Press Salt. The measured % NaCl, the temperature and the 100% NaCl
standard are displayed.
• Rinse the probe with some of the calibration solution or deionized water.
Immerse the probe into HI 7037L solution. Tap the probe repeatedly to
remove any air bubbles that may be trapped inside the sleeve.
• The “ ” tag will blink on the LCD until the reading is stable.
• When the reading is stable, the CFM functional key is displayed.
Press CFM to confirm calibration.
• The instrument returns to measurement mode.
Notes:
• If the uncalibrated reading is too far from the expected value, calibration
is not recognized. The “Wrong” message will be displayed.
• The meter uses 1.90 %/°C temperature compensation factor during cali-
bration. If the “Temperature Coef” in the Setup menu has been set to a
different value, when exiting calibration mode, the displayed value might
be different from the nominal standard value.
32
GOOD LABORATORY PRACTICE (GLP)GOOD LABORATORY PRACTICE (GLP)
GOOD LABORATORY PRACTICE (GLP)
GOOD LABORATORY PRACTICE (GLP)GOOD LABORATORY PRACTICE (GLP)
GLP is a set of functions that allows storage and retrieval of data regarding the
maintenance and status of the electrode.
All data regarding EC and NaCl calibration is stored for the user to review
when necessary.
EXPIRED CALIBRATION
The instrument is provided with a real time clock (RTC), in order to monitor the
time elapsed since the last EC/NaCl calibration.
The real time clock is reset every time the instrument is calibrated and the
“expired calibration” status is triggered when the instrument detects a
calibration time out. The “CAL” “DUE” tags will start blinking to warn the
user that the instrument should be recalibrated.
The calibration time out can be set (see SETUP for details, page 35) from 1 to
7 days or can be disabled.
For example, if a 4 days time out has been selected, the instrument will issue
the alarm exactly 4 days after the last calibration.
However, if at any moment the expiration value is changed (e.g. to 5 days),
then the alarm will be immediately recalculated and appear 5 days after the
last calibration.
Notes: • When the instrument is not calibrated or calibration is cleared
(default values loaded) there is no “expired calibration”, and
the display always shows the “CAL” “DUE” tags blinking.
• When an abnormal condition in the RTC is detected, the instrument
forces the “expired calibration” status.
LAST EC CALIBRATION DATA
The last pH calibration data is stored automatically after a successful calibration.
To view the EC calibration data, press GLP when the instrument is in the EC
measurement mode.
33
The instrument will display a lot of data including calibration standards,
offset, time and date, etc.
Use the Arrow keys to select the offset or calibration standards, in order to
view new information.
To see more information press More.
• More information regarding offset.
• More information regarding standards.
Notes: • Standards displayed in video inverse mode are from previous
calibrations.
• “No user calibration” message is displayed if all calibrations
are cleared or the instrument was not calibrated in the EC range.
LAST NaCl % CALIBRATION DATA
Last NaCl calibration data is stored automatically after a successful calibration.
To view the NaCl calibration data, press GLP key while in NaCl measurement
mode.
The instrument will display the NaCl information: calibration date, time and
offset.
34
SETUPSETUP
SETUP
SETUPSETUP
Setup mode allows viewing and modifying the measurement parameters.
These are general SETUP parameters for all the ranges and range specific
parameters.
The following table lists the general SETUP parameters, their valid range and
the factory default settings.
New Description Valid value Default
Select profile Add /View or select a profile
Log interval Time for automatic 5, 10, 30 s Disabled
logging 1, 2, 5, 10, 15, 30, 60, 120, 180 min (Log on
demand)
Backlight Backlight level 0 to 8 4
Contrast Contrast level 0 to 20 10
Auto Light Off Time until backlight 1, 5, 10, 30 min 1
is O N
Auto Power Off Time after the instrument Disabled 30
is powered OFF 5, 10, 30, 60 min
Date/Time 01.01.2006 to 12.31.2099 01.01.2006
00:00 to 23:59
Time Format AM/PM or 24 hours 24 hours
Date Format DD/MM/YYYY YYYY/MM/DD
MM/DD/YYYY
YYYY/MM/DD
YYYY-MM-DD
Mon DD, YYYY
DD-Mon-YYYY
YYYY-Mon-DD
Language Message display language Up to 4 languages English
Beep ON Beeper Status Enabled or Disabled Disabled
Instrument ID Instrument identification 0000 to 9999 0000
Baud Rate Serial Communication 600, 1200, 1800, 9600 9600
Meter Displays general
information informations
35
The following table lists the specific range parameters:
Item Description Valid value Default
Calibr. Number of days after Disable, 1 to 7 days Disable
Timeout Calibration warning
(EC, NaCl) is displayed
Out cal Display warning if the Enable/Disable Disable
range check reading is too far from the
(EC range calibration points
only)
Temperature Temperature Probe/Manual Probe
source entry mode
Temperature No TC, Linear No TC
compensation Non Linear
mode
Range select Fix one Automatic, Fix one Automatic
specific range resolution of
EC or resistivity range
Cell constant Manual set of 0.010 to 10.000 1.000
the cell constant
Temperature Set the coeficient 0.00 to 10.00 %/°C 1.00 %/°C
coeficient for linear temperature
compensation
Temperature Reference temperature 15 °C, 20 °C, 25 °C 25 °C
Ref
Temperature unit °C or °F °C
TDS factor 0.40 to 1.00 0.50
36
GENERAL PARAMETER SCREENS
Select Profile
Focus on the
Press Select.
The list with memorised profiles is displayed.
Press Add to add a new profile to the list (max 10).
Use the Arrow keys to focus on the desired profile.
Press Select to select the profile and exit to Setup.
Press View to view profile information.
Select Profile
item.
The profile information includes the date and the time when the profile was
added, information about calibration on EC and NaCl range, the setup cell
constant, information about temperature setting reference temperature, temperature compensation mode, temperature coefficient, temperature source
and information about fixed ranges.
If calibration exists, the GLP functional key is displayed. Press GLP EC to view
the corresponding GLP EC information.
Press GLP NaCl to view the corresponding GLP NaCl information.
Note: If the EC or NaCl calibration was not performed while the current profile
is set, or calibration was cleared, the corresponding GLP key is not
displayed.
37
Press Delete to delete selected profile. The Delete key is displayed only if more
than one profile is in the list.
Press Accept to confirm the deletion or Cancel to cancel and return to the
previous screen.
Press ESC to return to profile list screen.
Logging interval
Focus on the
Press Modify.
Logging interval
item.
Use the Arrow keys to select the logging interval. If “Disabled” option is
selected the Autolog feature is disabled and Log on demand is enabled.
Press Accept to confirm the value.
Press ESC to exit without saving.
Backlight
Focus on the
Backlight
item.
38
Contrast
Focus on the
Press Modify.
Use / keys to change contrast then press Accept to confirm.
Press ESC to leave without changing.
Auto Light Off
Focus on the
Contrast
item.
Auto Light Off
item.
Press 5, 10 or 30 to change settings.
Press one of the functional key to change the option.
Auto Power Off
Focus on the
Auto Power Off
item.
39
Press Modify.
Press ARROW keys to select internal interval then press Accept.
Press ESC to leave without changing.
Date/Time
Focus on the
Press Modify.
Use / keys to select item. Use ARROW keys to change focused values.
Press Accept to confirm new setting, or ESC to leave without changing.
Date/Time
item.
Time Format
Focus on the
Press functional key to change the option.
Date Format
Focus on the
Time Format
Date Format
item.
item.
40
Press Modify.
Use ARROW keys to select date format then press Accept.
Press ESC to leave without changing.
Language
Focus on the
Use the desired functional key to change the option. Wait until new language
is loaded.
If any language can be loaded, the instrument will work in safe mode. In this
mode all messages are displayed in English and Help is not available.
Beep On
Focus on
Language
Beep On
item.
item.
Press the displayed functional key to enable/disable key.
When enabled, beep sounds as a short beep every time a key is pressed or
when the calibration icon can be confirmed.
A long beep alert that the pressed key is not active or a wrong condition is
detected while in calibration.
Instrument ID
Focus on the
Instrument ID
item.
41
Press Modify.
Use ARROW keys to change the instrument ID.
Press Accept to confirm or ESC to exit without saving.
Baud Rate
Focus on the
Press Modify.
Baud Rate
item.
Use ARROW keys to select the desired communication baud. Press Accept to
confirm or ESC to exit.
Meter information
Focus on the
Press Select.
Meter Information
item.
42
The meter informations are displayed:
-firmware version
-language version
-mV and temperature factory calibration time/date
-battery capacity
RANGE SPECIFIC PARAMETERS
Calibration Timeout
Focus on the
Press Modify.
Calibration Timeout
item.
Use ARROW keys to set desired value.
Press Accept to confirm or ESC to return without saving.
Note: If enabled “CAL DUE” warning will be displayed, the set number of
days after calibration is over passed.
Out of calibration range check
Focus on
Out of cal range check
item.
43
Press the corresponding functional key in order to enable/disable this feature.
If enabled, a warning message is displayed when the EC reading is too far
from the EC calibration points.
Temperature source
Focus on the
Press the displayed functional key in order to change the option.
Select Probe in order to take the temperature automatic with the temperature
sensor inside the electrode.
Select Manual in order to set the temperature using the ARROW keys.
Temperature compensation
Focus on
Temperature source
item.
Temperature compensation
item.
Press one of the selected functional keys to change the option.
Select No TC in order to display actual conductivity. (no temperature compensation)
Select Linear in order to automatically compensate conductivity using the set
temperature coefficient.
Select Non Linear temperature compensation for natural water measure-
ments, using the natural water compensation equation.
Range Select
Focus on the
Range Select
item.
44
Press Modify to select ranging mode.
Use the Arrow keys to change selection.
Press Accept to confirm or ESC to exit without saving. If Automatic is selected
the instrument changes the range automatically according with the input.
If one of the range is selected all the readings are displayed on the correspond-
ing range.
The readings will be displayed with maximum 6 digits. If the reading exceeds
the maximum number of digits for the fixed range, the maximum value is
displayed blinking.
Note: The Range select parameter can be set only in EC and resistivity range.
Cell constant
Focus on the
Cell constant
item.
Press Modify to change the cell constant value.
Use Arrow Keys to change the cell constant value.
Press Accept to confirm or ESC to exit without changing.
Out of Cal-Range Warning
Focus on the
Out of Cal-Range Warning
45
item.
Press the displayed functional key in order to change option.
If enabled, the “Out Cal Range” message will be displayed if the EC reading
is not within the calibration range.
Temperature Coefficient
Focus on the
Press Modify in order to set the temperature coefficient.
Use the Arrow keys to change the value.
Press Accept to confirm or ESC to exit without changing.
Temperature Reference
Focus on the
Temperature Coefficient
Temperature Reference
item.
item.
Press the corresponding functional key to select the desired reference temperature.
Temperature unit
Focus on the
Press the displayed functional key in order to change the temperature unit.
Temperature
unit item.
46
LOG ON DEMANDLOG ON DEMAND
LOG ON DEMAND
LOG ON DEMANDLOG ON DEMAND
This feature allows the user to log up to 400 readings. All logged data can be
transferred to a PC through the USB port.
LOGGING THE CURRENT DATA
To store the current reading into memory, press LOG while in measurement
mode.
The instrument will display for few seconds the record number and the amount
of the free log space.
If the LOG space is full, the “Log space is full” message will be displayed for
few seconds when Log key is invoked.
Enter View Logged Data mode and delete records in order to free log space.
VIEW LOG ON DEMAND DATA
Press RCL to enter View Logged Data mode.
Press Man Log to enter the log on demand range selection.
47
Use arrow keys to focus on the desired range then press View.
The list of records corresponding to the selected range is displayed.
If no data were logged on the current range, the instrument will display
“No Records” message.
Use ARROW keys to scroll between the records from the list.
Press Delete All to enter
Press Delete to enter
Press More to view more information of the focused record.
If More is pressed.
Use Pg Up or PgDown keys to toggle the complete information screens.
Use ARROW keys to scroll between memorised records.
If Delete is pressed.
Delete All
Delete records
screen.
screen.
Use ARROW key to focus the record to be deleted and then press CFM.
Press ESC to exit.
If Delete All is pressed the instrument asks for confirmation.
Press CFM to confirm or ESC to exit without deleting.
For USP range, the instrument will display the sample ID, analyze time and
date:
Use ARROW keys to select the desired record.
Press Delete to enter delete one record mode.
48
Press Delete All to enter delete all mode.
Press More to view the complete record information.
Press PgDown or PgUp to scroll the record screens.
49
AUTOLOGAUTOLOG
AUTOLOG
AUTOLOGAUTOLOG
This feature allows the user to log up to 1000 readings.
All logged data can be transferred to PC through USP port.
The memory space is organized in lots of records. A lot can contain from 1 to
1000 records. The maximum available lots number is 100.
START AUTOLOG
Set the desired logging interval in the Setup menu.
If 5, 10, 30 s or 1 min interval is selected, the AutoPower Off feature is
disabled (each sample memorized restarts the autopower off counter). For
other intervals, the instrument will enter a sleeping mode. During this mode
the instrument continues to monitor the inputs and memorize the reading at
the set interval. To exit sleeping mode, simply press any key (exception ON/
OFF).
Note: While in sleeping mode the instrument cannot be powered off by
pressing ON/OFF key. Leave sleeping mode and then press ON/OFF
key to power off the instrument.
To start autolog from the measurement screen press StartLog key. The lot
number and the amount of memory space is displayed for few seconds.
If the autolog space is full or the lots number exceeds 100 the
“Auto log space full” message is displayed.
VIEW AUTOLOG DATA
Press RCL key to enter View Logged Data mode.
50
Press AutoLog to enter the automatic log range selection.
Use arrow keys to focus on the desired range, then press View.
The list of lots corresponding to the selected range is displayed.
If no data were logged on the current range, the instruments will display
“No Records!”.
Use ARROW keys to scroll the lot list. Press Delete or Delete All to delete the
lot or all lots. The confirmation is asked as at individual record delete.
Press More to view more information.
The list of records for the specific lot is displayed.
Press More to view the complete record information.
Press PgDown or PgUp to scroll the information screens.
51
AA
utoEndutoEnd
A
utoEnd
AA
utoEndutoEnd
To freeze the first stable reading on the LCD press AutoEnd while the instru-
ment is in measurement mode.
The ”Wait” symbol will blink until the reading is stable.
When the reading is stable, “Hold” icon will be displayed.
Press Continue in order to enter continuous reading mode.
52
TEMPERATURE CALIBRATIONTEMPERATURE CALIBRATION
TEMPERATURE CALIBRATION
TEMPERATURE CALIBRATIONTEMPERATURE CALIBRATION
(for technical personnel only)
All the instruments are factory calibrated for temperature.
Hanna’s temperature probes are interchangeable and no temperature
calibration is needed when they are replaced.
If the temperature measurements are inaccurate, temperature recalibration
should be performed.
For an accurate recalibration, contact your dealer or the nearest Hanna
Customer Service Center, or follow the instructions below.
Press “T” functional key to enter the temperature calibration mode while in EC
or Salt calibration screens .
It is better to perform a 2 points calibration.
The calibration can be performed in any two points that have at least 25 ºC
distance between. It is recommended that the first point be near 0 ºC and the
second point near50 ºC.
• Prepare a vessel containing ice and water and another one containing hot
water (at approximately 50 ºC or 122 ºF). Place insulation material around
the vessels to minimize temperature changes.
• Use a calibrated thermometer with a resolution of 0.1 ºC as a reference
thermometer. Connect the HI 76313 EC probe with built in temperature
sensor to the appropriate socket.
• Immerse the HI 76313 probe into the vessel with ice and water as close as
possible to the reference thermometer. Allow a few seconds for the probe to
stabilize.
• Use the ARROW keys to set the calibration point value to that of ice and
water mixture, measured by the reference thermometer. Set the calibration point value to that measured in the reference thermometer.
53
• When the reading is stable and close to the selected calibration point, the
CFM functional key is displayed.
• Press CFM to confirm.
• The second expected calibrated point is displayed.
• Immerse the probe into the second vessel as close as possible to the reference
thermometer. Allow a few seconds for the probe to stabilize.
• Use the ARROW keys to set the calibration point value to that measured
by the reference thermometer.
• When the reading is stable and close to the selected calibration point,
CFM functional key is displayed.
• Press CFM to confirm. The instrument returns to measurement mode.
54
Note: •If the reading is not close to the selected calibration point or the
difference between first selected point and second selected point is
less than 25 ºC, “Wrong” message will blink.
• If the WRONG source is the difference between calibration points
increase the temperature of the vessel with hot water in order to be
acceptable.
• If the WRONG source is the temperature reading change the probe
and restart calibration.
If calibration cannot be performed contact Hanna Service.
•For one point calibration press ESC after first point was confirmed.
55
PC INTERFACEPC INTERFACE
PC INTERFACE
PC INTERFACEPC INTERFACE
Data transmission from the instrument to the PC can be done with the HI 92000
Windows® compatible software (optional). HI 92000 also offers graphing and
on-line help feature.
Data can be exported to the most popular spreadsheet programs for further analysis.
To connect your instrument to a PC, use an USB cable connector. Make sure
that your instrument is switched off and plug one connector to the instrument
USB socket and the other to the serial or USB port of your PC.
Note: If you are not using Hanna Instruments HI 92000 software, please
see the following instructions.
SENDING COMMANDS FROM PC
It is also possible to remotely control the instrument with any terminal program.
Use an USB cable in according with the model to connect the instrument to a
PC, start the terminal program and set the communication options as follows: 8,
N, 1, no flow control.
COMMAND TYPES
To send a command to the instrument follow the next scheme:
<command prefix> <command> <CR>
where: <command prefix> is a selectable 16 ASCII character
<command> is the command code.
Note: Either small or capital letters can be used.
SIMPLE COMMANDS
KF1 Is equivalent to pressing functional key 1
KF2 Is equivalent to pressing functional key 2
KF3 Is equivalent to pressing functional key 3
RNG Is equivalent to pressing RANGE
MOD Is equivalent to pressing MODE
CAL Is equivalent to pressing CAL
UPC Is equivalent to pressing the UP arrow key
DWC Is equivalent to pressing the DOWN arrow key
RCL Is equivalent to pressing RCL
SET Is equivalent to pressing SETUP
CLR Is equivalent to pressing CLR
OFF Is equivalent to pressing OFF
CHR xx Change the instrument range according with the parameter
56
value (xx):
• xx=10 EC range
• xx=11 Resistivity range
• xx=12 TDS range
• xx=13 USP range
• xx=14 NaCl % range
• xx=15 Salinity, Sea water range
• xx=16 Salinity, PSUrange
The instrument will answer for these commands with:
<STX> <answer> <ETX>
where: <STX> is 02 ASCII code character (start of text)
<ETX> is 03 ASCII code character (end of text)
<answer>:
<ACK> is 06 ASCII code character (recognized command)
<NAK> is 21 ASCII code character (unrecognized command)
<CAN> is 24 ASCII code character (corrupted command)
COMMANDS REQUIRING AN ANSWER
The instrument will answer for these commands with:
<STX> <answer> <checksum> <ETX>
where the checksum is the bytes sum of the answer string sent as 2 ASCII characters.
All the answer messages are with ASCII characters.
RAS Causes the instrument to send a complete set of readings in
according with the current range:
• EC and temperature readings or EC range.
• Resistivity, EC and temperature readings on Resistivity
• TDS, EC and temperature readings on TDS range
• Salinity, EC, and temperature or Salinity range.
The answer string contains:
• Meter mode (2 chars):
• xx=10 EC range
• xx=11 Resistivity range
• xx=12 TDS range
• xx=13 USP range
• xx=14 NaCl % range
• xx=15 Salinity, Sea water range
• xx=16 Salinity, PSU range
57
• Meter status (2 chars of status byte): represents a 8 bit
hexadecimal encoding.
• 0x10 - temperature probe is connected
• 0x20 - autolog in progress
• 0x01 - new GLP data available
• 0x02 - new SETUP parameter
• 0x04 - out of calibration range
• 0x08 - the meter is in autoend point mode
• 0x30 - the instrument is in fixed range
• Reading status (2 chars): R - in range, O - over range,
U - under range. First character corresponds to the primary
reading. Second character corresponds secondary reading.
• Primary reading (corresponding to the selected range) 10 ASCII chars, including sign, decimal point and unit.
• Secondary reading (only when primary reading is not EC)
- 10 ASCII chars, including sign, decimal point and unit
(if primary reading is not conductivity).
• Temperature reading - 8 ASCII chars, with sign, decimal
point, always in ºC.
MDR Requests the instrument model name and firmware code (16 ASCII
chars).
GLPxx Requests the calibration data record for “xx” profile number.
The answer string contains:
• GLP status (1 char): represents a 4 bit hexadecimal encoding.
• 0x01 - EC calibration available
• 0x02 - NaCl calibration available
• EC calibration data (if available), which contains:
• calibration time (12 char)
• the number of calibration point (1 char)
For each calibration point:
• the standard value (10 chars)
• offset factor or cell constant (with sign and decimal
point)
• time when was calibrated (12 chars)
• salinity calibration
• calibration time (12 charrs)
• salinity coefficient (10 chars)
PRFxx Request profile “xx” information
The answer string contains:
58
10 - EC range
11 - Resistivity range
12 - TDS range
13 - USP range
14 - NaCl % range
15 - Salinity Sea Water range
16 - Salinity Sea Water, PSU range
• creation time (12 chars)
• temperature source (1 char): 0 - probe, 1 - manual entry
• temperature compensation: 0 - NOTC, 1 - linear TC, 2 - non
linear TC
• beep status (1 char):0- off, 1 - on
• temperature unit (1 char): 0 - ºC, 1 - ºF
• backlight (2 chars)
• contrast (2chars)
• auto light off (3chars)
• auto power off (3chars)
• baud rate (5 chars)
• instrument ID (4chars)
• EC alarm time out interval (2 chars)
• NaCl alarm time out interval (2 chars)
• Logging interval (5chars)
• Calibration range check (1 char): 0 - off; 1 - on
• TDS factor (6 chars)
• Temperature coefficient (6 chars)
• Reference temperature (6 chars)
• Cable correction resistor (5 chars)
• Cable correction capacitance (4 chars)
• EC fixed range number (1 char)
• Resistivity fixed range number (1 char)
• TDS fixed range number (1 char)
• Language ID (3 chars)
• Cell constant (7 chars)
PAR Requests the setup parameters setting.
The answer string contains:
• number of profiles (2chars)
• current profile ID (2 chars)
• number of languages (2 chars)
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NSLx Requests the number of logged samples.
The command parameter (1 char):
• E - the request is for EC range
• R - the request is for Resistivity range
• T - the request is for TDS range
• N - the requests is for NaCl range
• U - the requests is for USP range
The answer string is the number of samples (4 chars)
ULS Requests information about the status of the USP log reports.
The answer string contains:
• the number of reports (3 chars)
For every USP report the following information are sent:
• report ID (3 chars)
• log time (12 chars)
LLS Requests information about the number of lots
The answer string contains:
• the number of lots (3 chars)
For every lot the following information are sent:
• lot ID (3 chars)
• log time (12 chars)
• lot type (1 char): 0 - EC; 1 - Resistivity;
2 - TDS; 3 - NaCl
GLDxxx Requests all the records for the lot with ID = xxx
The answer string contains:
Lot header data:
• logging interval (1 s) (5 chars)
• temperature source (1char)
• temperature compensation mode (1 char)
• reference temperature (2 chars)
• temperature coefficient (6 chars)
• offset factor (6 chars)
• TDS factor (6 chars) (only for TDS lots)
• salinity coefficient (7 chars) (only for salinity lots)
• profile ID (4 chars)
• profile creation time (12 chars)
• lot start time (12 chars)
Lot record data:
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• EC value (8 chars)
• EC unit (1 char): 0 - mS; 1 - mS
• EC overrange flag (1 char): R, U, O
• temperature reading, in ºC (8 chars)
Next data is sent if the lot is not for EC range.
• Resistivity or TDS or Salinity (8 chars)
• Reading unit:
• Overage flag (1 char)
• Resistivity: 0 - ohm; 1 - Kohm; 2 - Mohm
• TDS: 0 - ppm; 1 - g/L
• Salinity: 0 - %; 1 - ppt; 2 - PSU
LODxxx Requests the log information for record number “xxx” on range “r”
• “r” is E for EC, R for resistivity, T for TDS and N for salinity
The answering string contains:
• The logged range (2 chars): 10 - EC, 11 - Resistivity,
12 - TDS, 13 - USP, 14 - NaCl %, 15 - Salinity Sea Water,
16 - Salinity PSU
For EC, Resistivity, TDS and salinity ranges:
• EC reading (8 chars)
• EC unit (1 char)
• Temperature source (1 char)
• Temperature compensation mode (1 char)
• Reference temperature (2 chars)
• Temperature coefficient (6 chars)
• Cell constant (7 chars)
• The nearest calibration standard (7 chars)
• The calibration standard unit (1 char)
• Offset factor (6 chars)
• Temperature reading (8 chars)
• Resistivity or TDS or salinity reading (8 chars)
• Unit (1 char)
• TDS factor (6 chars) or salinity coefficient (7 chars)
• Log time (12 chars)
61
For USP records:
• Record ID (3 chars)
• Stage 1 status (1 char): 0 - not verified; 1 - USP met;
2 - USP not met
• Stage 2 status (1 char): see Stage 1
• Stage 3 status (1 char): see Stage 1
• Stage 1 data (if exist):
• EC reading (8 chars)
• EC unit (1 char)
• temperature reading in ºC
• Stage 2 data (if exists) - same as Stage 1
• Stage 3 data (if exists)
• pH value (5 chars)
•USP factor (3 chars)
•Cell constant (1 char)
Note: “Err3” is sent if record does not exist
“Err4” is sent if the identification range character is not recognized
“Err5” is sent if autolog is in progress
“Err6” is sent if the request range is not available
“Err7” is sent if the instrument is logging
“Err8” is sent if the instrument is not in the measuring mode
“Err9” is sent if the battery low condition is detected and the commu-
nication cannot be done.
62
BATTERIESBATTERIES
BATTERIES
BATTERIESBATTERIES
RECHARGING/REPLACEMENTRECHARGING/REPLACEMENT
RECHARGING/REPLACEMENT
RECHARGING/REPLACEMENTRECHARGING/REPLACEMENT
The instrument is ready with rechargeable batteries inside.
First time you start working with the instrument or when the rechargeable
batteries are changed with new ones, perform the following procedure:
• Work with the instrument until the rechargeable batteries are fully discharged
• Perform a complete charging cycle (about 16hours).
Repeat this procedure 3 times.
It is recommended to recharge the rechargeable batteries as soon as the
battery indicator does not show full scale before starting in field measurements
or every time you finish your work with your instrument.
5
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If the battery capacity is less than 20 % the serial communication and the
backlight feature are not available.
To replace the rechargeable batteries, follow the next steps:
• Turn OFF the instrument.
• Unscrew the screw from the bottom side of the instrument.
• Remove the battery holder and the old batteries.
• Insert four new 1.2V AA 1300 mAh NiMH rechargeable batteries in the
battery compartment while paying attention to the correct polarity.
• Push the battery holder and tighten the screws.
63
To recharge the rechargeable batteries, follow the next steps:
• Connect the 12Vdc power adapter to the main line and to the main line of
thebattery recharger. The front LED will turn ON.
• Place the instrument in the battery recharger case. A charging animation will
be displayed if the battery capacity is less than 100 %.
H
I
9
8
1
8
5
pH
/ORP/ISE
Meter
• The complete charging process takes about 16 hours.
Notes: • As the charging process is performed at low current, the instru-
ment can be left on the recharger more than 16 hours, without
damaging the rechargeable batteries.
• It is recommended to turn off the instrument while recharging the
batteries. The measurements can be affected by the recharging
process.
• Batteries recharging must only take place in a non hazardous
area, using the HI 710042 inductive recharger.
WARNING:
Do not replace the rechargeable batteries with alkaline batteries.
Do not put ever the instrument with alkaline batteries inside on the recharger.
The manufacturer don’t assume any obligation for malfunctioning appeared
as a result of using alkaline batteries.
Note: The instrument is provided with the BEPS (Battery Error Prevention
System) feature, which automatically turns the instrument off when
the batteries level is too low to ensure reliable readings.
64
TROUBLESHOOTING GUIDETROUBLESHOOTING GUIDE
TROUBLESHOOTING GUIDE
TROUBLESHOOTING GUIDETROUBLESHOOTING GUIDE
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65
PROBE MAINTENANCEPROBE MAINTENANCE
PROBE MAINTENANCE
PROBE MAINTENANCEPROBE MAINTENANCE
Rinse the probe with clean water after measurements. If more cleaning is
required, remove the probe sleeve and clean the probe with a cloth or a
nonabrasive detergent. Make sure to reinsert the sleeve onto the probe
properly and in the right direction. After cleaning the probe, recalibrate the
instrument.
The platinum rings are sustained with glass. Take great care while handling
the probe.
REPLATINIZATIONREPLATINIZATION
REPLATINIZATION
REPLATINIZATIONREPLATINIZATION
The coating of platinum black on the electrodes of the conductivity cell should
be inspected before and after use for signs of flaking or loss of material. If the
coating seems poor, cleaning and replatinization is required.
To perform probe replatinization, enter calibration screen from EC range by
pressing CAL key.
Put the probe into a beaker with replatinization solution and press Start.
66
The process can be interrupted by pressing Stop or ESC key.
The replatinization process takes about 5 minutes.
Remove the probe from the replatinization solution and rinse it with deionizated
water.
ACCESSORIESACCESSORIES
ACCESSORIES
ACCESSORIESACCESSORIES
EC CALIBRATION SOLUTIONS
HI 70033C 84 mS/cm, 20 ml sachet, 25 pcs.
HI 70031C 1413 mS/cm, 20 ml sachet, 25 pcs.
HI 70039C 5000 mS/cm, 20 ml sachet, 25 pcs.
HI 70030C 12880 mS/cm, 20 ml sachet, 25 pcs.
HI 6033 84 mS/cm, 500 ml, bottle
HI 6031 1413 mS/cm, 500 ml, bottle
HI 7039L 5000 mS/cm, 500 ml, bottle
HI 7030L 12880 mS/cm, 500 ml, bottle
HI 7034L 80000 mS/cm, 500 ml, bottle
HI 7035L 114800 mS/cm, 500 ml, bottle
HI 7037L 100% NaCl, 500 ml, bottle
RECOMMENDATIONS FOR USERS
Before using these products, make sure they are entirely suitable for the environment in which
they are used.
Operation of these instruments in residential areas could cause unacceptable interferences to
radio and TV equipment, requiring the operator to follow all necessary steps to correct interferences.
The glass bulb at the end of the pH 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 instruments’
EMC performance.
To avoid electrical shock, do not use these instruments when voltages at the measurement
surface exceed 24 Vac or 60 Vcc.
To avoid damage or burns, do not perform any measurement in microwave ovens.
67
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
05/07
United Kingdom:
Tel. (01525) 850.855 • Fax (01525) 853.668
USA:
Tel. (401) 765.7500 • Fax (401) 765.7575
For e-mail contacts and a complete list of Sales and
Technical offices, please see www.hannainst.com
68
MAN98188
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