Hanna Instruments HI98194 User manual

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Instruction Manual
HI 98194, HI 98195,
HI 98196
Multiparameter Meters
www.hannainst.com

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HANNA instruments®reserves the right to modify the design,
construction or appearance of its products without advance notice.
Dear Customer,
Thank you for choosing a HANNA Instruments®product.
Please read this instruction manual carefully before using the instrument.
It will provide you with the necessary information for correct use of the instrument,
as well as it’s versatility.
If you need additional technical information, do not hesitate to e-mail us at
[email protected] or visit our website www.hannainst.com for our
worldwide contact list.
TABLE OF CONTENTS
CHAPTER 1- INTRODUCTION ....................................................................... 6
1.1 Preliminary Examination ................................................................................. 6
1.2 Model Identification ....................................................................................... 6
1.3 General Description....................................................................................... 6
1.4 Display and Keypad Description ...................................................................... 8
CHAPTER 2 - QUICK START ........................................................................... 9
2.1 Sensor and Probe Installation .......................................................................... 9
2.2 Basic Operation ...........................................................................................11
2.3 Help Function .............................................................................................. 11
CHAPTER 3 - SPECIFICATIONS ...................................................................... 12
3.1 System Specifications ..................................................................................... 12
3.2 Probe Specifications ...................................................................................... 16
3.3 Sensor Specifications ..................................................................................... 17
CHAPTER 4 - PROBE INSTALLATION .............................................................. 18
4.1 Sensor Descriptions ....................................................................................... 18
4.2 Sensor Preparation/Activation ........................................................................ 19
4.2.1 pH Preparation ..................................................................................................... 19
4.2.2 ORP Activation ..................................................................................................... 19
4.2.3 D.O. Sensor Activation......................................................................................... 20
4.2.4 EC Sensor Preparation ..........................................................................................20
4.3 Sensor Installation ........................................................................................ 20
CHAPTER 5 - INITIALIZATION AND MEASUREMENT ....................................... 23
5.1 Battery Installation ........................................................................................ 23
5.2 Meter Initialization ........................................................................................ 24
5.3 Measurement Mode ...................................................................................... 25
5.4 Setup Menu Structure .................................................................................... 26
CHAPTER 6 - PARAMETER SETUP MENU ........................................................ 27
6.1 Select Parameters .......................................................................................... 27
6.2 Parameter Units ............................................................................................ 27
6.2.1 Temperature Unit ..................................................................................................27
6.2.2 TDS Unit (HI 98194, HI 98195 only) ..................................................................... 27
6.2.3 DO Concentration Unit (HI 98194, HI 98196 only) ................................................27
6.2.4 Pressure Unit........................................................................................................27

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8.1.9 Meter Password .................................................................................................... 46
8.1.10 Meter ID ............................................................................................................46
8.1.11 Language ...........................................................................................................47
8.1.12 Restore Factory Settings....................................................................................... 47
8.2 Probe Setup ................................................................................................. 47
8.2.1 Probe ID ..............................................................................................................47
CHAPTER 9 - STATUS .................................................................................... 48
9.1 Meter Status ................................................................................................. 48
9.2 Probe Status ................................................................................................ 48
9.3 GLP Data .................................................................................................... 49
CHAPTER 10 - LOGGING MODE ................................................................... 52
10.1 Logging Menu Structure ............................................................................... 53
10.2 Logging On Meter ...................................................................................... 53
10.2.1 One Sample On Meter ....................................................................................... 54
10.2.2 Continuous Meter Log ........................................................................................ 54
10.3 Log Recall ................................................................................................. 55
10.4 Log Notes .................................................................................................. 56
10.4.1 Remarks ............................................................................................................ 56
10.4.2 Delete All Remarks .............................................................................................. 56
CHAPTER 11 - PC CONNECTION .................................................................. 57
11.1 Software Installation .................................................................................... 57
11.2 Meter to PC Connection .............................................................................. 57
CHAPTER 12 - TROUBLESHOOTING / ERROR MESSAGES ............................... 59
APPENDIX
A - PROBE MAINTENANCE................................................................................ 61
B - PROBE DEPLOYMENT .................................................................................. 63
C - ACCESSORIES ............................................................................................. 65
D - WARRANTY ................................................................................................. 70
6.2.5 Resistivity Unit (HI 98194, HI 98195 only) .............................................................28
6.2.6 Seawater Sigma Unit (HI 98194, HI 98195 only) .................................................... 28
6.2.7 EC Resolution Unit (HI 98194, HI 98195 only) .......................................................28
6.2.8 Absolute EC Resolution Unit (HI 98194, HI 98195 only) ..........................................28
6.2.9 TDS Resolution Unit (HI 98194, HI 98195 only) ..................................................... 28
6.3 Parameter Coefficients ................................................................................... 29
6.3.1 EC Reference Temperature (HI 98194, HI 98195 only) ............................................29
6.3.2 EC Temperature Coefficient (HI 98194, HI 98195 only) ..........................................29
6.3.3 TDS Factor (HI 98194, HI 98195 only) ..................................................................29
6.4 Averaging ................................................................................................... 29
CHAPTER 7 - CALIBRATION MODE ................................................................ 30
7.1 Quick Calibration ........................................................................................ 31
7.2 pH Calibration ............................................................................................. 32
7.2.1 Preparation .......................................................................................................... 32
7.2.2 Procedure ............................................................................................................33
7.2.3 pH Calibration Error Messages .............................................................................. 34
7.3 Relative mV Calibration ................................................................................. 35
7.3.1 Preparation .......................................................................................................... 36
7.3.2 Procedure ............................................................................................................36
7.4 Dissolved Oxygen Calibration (HI 98194, HI 98196 only) .............................. 36
7.5 Conductivity Calibration (HI 98194, HI 98195 only) ...................................... 38
7.6 Temperature Calibration ................................................................................ 42
7.7 Atmospheric Pressure Calibration ................................................................... 43
CHAPTER 8 - SYSTEM SETUP ......................................................................... 44
8.1 Meter Setup ................................................................................................. 44
8.1.1 Time ...................................................................................................................44
8.1.2 Date ....................................................................................................................44
8.1.3 Auto Poweroff ......................................................................................................45
8.1.4 Key Beep ............................................................................................................. 45
8.1.5 Error Beep ........................................................................................................... 45
8.1.6 Decimal Separator ................................................................................................45
8.1.7 LCD Contrast .......................................................................................................45
8.1.8 LCD Backlight Intensity .......................................................................................... 46

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Main features of the HI 9819X systems:
•Rugged meter and probe
•Easy to use
•Measure up to 14 parameters and display of up to 12 parameters
•Waterproof protection (IP67 for the meter and IP68 for the probe)
•Graphic LCD with backlight
•Built-in barometer for D.O. concentration compensation (HI 98194, HI 98196
only)
•Quick calibration feature
•Measurement check to eliminate any erroneous readings
•Autorecognition of probe and sensors
•Log-on-demand and automatic logging (up to 45,000 samples) on meter for
all parameters
•Graphical display of logged data
•USB interface for PC communication
•Auto-ranging for EC readings (HI 98194, HI 98195only)
•Good Laboratory Practice feature, the last 5 calibrations are automatically
stored
•Field-replaceable sensors with color coded caps
•Meter is powered with alkaline batteries
Chapter 1 - INTRODUCTION
1.1 PRELIMINARY 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 immediately.
Note Save all packing materials until you are sure that the instrument
functions correctly. Any damaged or defective items must be returned
in their original packing material with the supplied accessories.
1.2 MODEL IDENTIFICATION
HI 98194 pH/EC/DO Multiparameter meter with HI 7698194 probe.
HI 98195 pH/ORP/TDS/NaCl/Resistivity meter with HI 7698195 probe.
HI 98196 pH/ORP/Dissolved Oxygen meter with HI 7698196 probe.
1.3 GENERAL DESCRIPTION
HI 9819X is a portable logging multiparameter system (instrument, probe) that
monitors up to 14 different water quality parameters (7 measured, 7 calculated).
The microprocessor-based intelligent multisensor probes allows measurement of
many water quality parameters such as pH, ORP, dissolved oxygen, conductivity
and temperature with data logging. The system is easy to setup and easy to use.
The HI 9819X features a graphic, backlit display that automatically sizes the
digits to fit the screen with on-screen graphing capability. Each parameter is fully
configurable.
HI 9819X was designed to withstand harsh environments and is the ideal solution
for field measurements of lakes, rivers and sea.
The meter meets IP67 standards (30 minute immersion at a depth of 1 m) and
the multisensor probe meets IP68 standards (continuous immersion in water).

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Chapter 2 - QUICK START
2.1 SENSOR AND PROBE INSTALLATION
•Sensor o-rings must be lubricated with the supplied grease prior to installation.
•HI 769819X probes have 2 or 3 sensor connectors sockets identified with
color-coded triangles:
•Connector 1 (red): For either pH/ORP, pH sensor
•Connector 2 (white): For dissolved oxygen sensor (HI 98194, HI 98196
only)
•Connector 3 (blue): For EC sensor (HI 98194, HI 98195 only)
•Position the connector key towards the center of the probe, make sure the
connector is seated correctly (the sensor will no longer move freely) before
tightening the locking threads.
•To protect the sensors, screw the protective shield onto the probe body.
•With the meter off, connect the probe to the instrument input on the top of the
meter. Align the pins and key then push the plug into the socket and tighten
the thread.
•Turn the meter on by pressing the On/Off key. The meter will automatically
recognize the probe and the installed sensors and identify them on the probe
status screen.
•Press Measure to view the measurement screen.
1.4 DISPLAY AND KEYBOARD DESCRIPTION
1. Graphic LCD
2. Battery level indicator
3. Softkeys
4. On/Off key: turn the meter on and off
5. Lamp key: turn the backlight on and off
6. Alphanumeric keyboard: insert alphanumeric codes
7. /Arrow keys: scroll the displayed options/message
8. HELP key: obtain information about the displayed screen
9. ESC key: return to the previous screen
10. Softkey functions defined on display

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2.2 BASIC OPERATION
The main operating modes for HI 9819X are measurement, logging and setup.
The measurement screen can be configured to display a single measurement or
up to 12 simultaneous measurements by using the numbers 1-7 on the keypad.
Use the arrow keys to scroll through the measurements not being displayed.
See section 5.3 for more details.
The measurement units will blink if the system has not been calibrated and the
measurement number will blink when the reading is out of range.
Press Log to display the logging menu. You can either log a single sample on the
meter or start an interval log on the meter. See chapter 10 for more details.
Press Menu to enter setup mode. You can configure which parameters you
want to measure, calibrate the sensors, change system settings and view the
meter and probe status.
2.3 HELP FUNCTION
HI 9819X features context sensitive HELP, which provides useful information
regarding the displayed screen.
Simply press the HELP key to access this function, then use the arrow keys to
scroll through the message.
To escape from the HELP window, press the HELP key again or ESC.

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CONDUCTIVITY (HI 98194, HI 98195 only)
Range 0 to 200 mS/cm
(absolute EC up to 400 mS/cm)
Resolution
Manual 1 µS/cm; 0.001 mS/cm; 0.01 mS/cm; 0.1 mS/cm; 1 mS/cm
Automatic 1 µS/cm from 0 to 9999 µS/cm
0.01 mS/cm from 10.00 to 99.99 mS/cm
0.1 mS/cm from 100.0 to 400.0 mS/cm
Automatic (mS/cm) 0.001 mS/cm from 0.000 to 9.999 mS/cm
0.01 mS/cm from 10.00 to 99.99 mS/cm
0.1 mS/cm from 100.0 to 400.0 mS/cm
Accuracy ±1 % of reading or ±1 µS/cm whichever is greater
Calibration Automatic single point, with 6 standard solutions
(84 µS/cm, 1413 µS/cm, 5.00 mS/cm, 12.88 mS/cm,
80.0 mS/cm, 111.8 mS/cm) or custom point
RESISTIVITY (HI 98194, HI 98195 only)
Range 0 to 999999 Ω·cm;
(depending on measurement setup) 0 to 1000.0 kΩ·cm;
0 to 1.0000 MΩ·cm
Resolution Depending on resistivity reading
Calibration Based on conductivity or salinity calibration
TDS (Total Dissolved Solids) (HI 98194, HI 98195 only)
Range 0 to 400000 ppm (mg/L);
(the maximum value depends on the TDS factor)
Resolution
Manual 1 ppm (mg/L); 0.001 ppt (g/L);
0.01 ppt (g/L); 0.1 ppt (g/L); 1 ppt (g/L)
Automatic 1 ppm (mg/L) from 0 to 9999 ppm (mg/L)
0.01 ppt (g/L) from 10.00 to 99.99 ppt (g/L)
0.1 ppt (g/L) from 100.0 to 400.0 ppt (g/L)
Automatic ppt (g/L) 0.001 ppt (g/L) from 0.000 to 9.999 ppt (g/L)
0.01 ppt (g/L) from 10.00 to 99.99 ppt (g/L)
0.1 ppt (g/L) from 100.0 to 400.0 ppt (g/L)
Accuracy ±1 % of reading or ±1 ppm (mg/L) whichever is greater
Calibration Based on conductivity or salinity calibration
Chapter 3 - SPECIFICATIONS
3.1 SYSTEM SPECIFICATIONS
TEMPERATURE
Range -5.00 to 55.00 °C;
23.00 to 131.00 °F;
268.15 to 328.15 K
Resolution 0.01 °C; 0.01 °F; 0.01 K
Accuracy ± 0.15 °C; ± 0.27 °F; ±0.15 K
Calibration Automatic at 1 custom point
pH/mV
Range 0.00 to 14.00 pH; ± 600.0 mV
Resolution 0.01 pH; 0.1 mV
Accuracy ± 0.02 pH; ± 0.5 mV
Calibration Automatic 1, 2 or 3 points with automatic recognition
of 5 standard buffers (pH 4.01, 6.86, 7.01, 9.18, 10.01)
and 1 custom buffer
ORP
Range ± 2000.0 mV
Resolution 0.1 mV
Accuracy ± 1.0 mV
Calibration Automatic at 1 custom point (relative mV)
DISSOLVED OXYGEN (HI 98194, HI 98196 only)
Range 0.0 to 500.0 %
0.00 to 50.00 ppm (mg/L)
Resolution 0.1 %
0.01 ppm (mg/L)
Accuracy 0.0 to 300.0 %: ± 1.5 % of reading
or ± 1.0 % whichever is greater;
300.0 to 500.0 %: ± 3 % of reading
0.00 to 30.00 ppm (mg/L): ± 1.5 % of reading
or ±0.10 ppm (mg/L) whichever is greater;
30.00 ppm (mg/L) to 50.00 ppm (mg/L): ± 3 % of reading
Calibration Automatic 1 or 2 points at 0, 100 % or 1 custom point

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METER BATTERY LIFE
The power consumption of the HI 9819X multiparameter systems are dependent
on two things:
1. The measurement system configuration (sensor configuration)
2. The meter configuration (logging interval and backlight use)
The following table estimates the meter’s battery life connected to a HI 769819X
probe with backlight off. (Note: backlighting use consume the most power).
The table variables, battery selection and parameter selection.
pH/ ORP, DO, EC
Backlight OFF, 1 s log 280 hours
Backlight OFF, 4 min log 360 hours
Backlight OFF, 10 min log 400 hours
Backlight ON, 4 min log 50 minutes
Backlight ON, 10 min log 50 minutes
SALINITY (HI 98194, HI 98195 only)
Range 0.00 to 70.00 PSU
Resolution 0.01 PSU
Accuracy ±2% of reading or ±0.01 PSU whichever is greater
Calibration Based on conductivity calibration
SEAWATER SIGMA (HI 98194, HI 98195 only)
Range 0.0 to 50.0 σt, σ0, σ15
Resolution 0.1 σt, σ0, σ15
Accuracy ± 1σt, σ0, σ15
Calibration Based on conductivity or salinity calibration
ATMOSPHERIC PRESSURE
Range 450 to 850 mm Hg; 17.72 to 33.46 in Hg;
600.0 to 1133.2 mbar; 8.702 to 16.436 psi;
0.5921 to 1.1184 atm; 60.00 to 113.32 kPa
Resolution 0.1 mm Hg; 0.01 in Hg; 0.1 mbar
0.001 psi; 0.0001 atm; 0.01 kPa
Accuracy ±3 mm Hg within ±15°C from calibration temperature
Calibration Automatic at 1 custom point
METER SPECIFICATIONS
Temperature Compensation Automatic from -5 to 55 °C (23 to 131 °F)
Logging Memory 45,000 records
(continuous logging or log-on-demand of all parameters)
Logging Interval 1 second to 3 hours
PC Interface USB (with HI 9298194 software)
Waterproof Protection IP67
Environment 0 to 50 °C (32 to 122 °F); RH 100 %
Battery Type 4 x 1.5 V, AA alkaline batteries
Battery Life 360 hours without backlight / 50 hours with backlight
Dimensions/Weight
221 x 115 x 55 mm (8.7 x 4.5 x 2.2”) / 750 g (26.5 oz.)

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3.3 SENSOR SPECIFICATIONS
HI 769828-0 HI 769828-1 HI 769828-2 HI 769828-3
Description pH pH/ORP Dissolved Oxygen EC
Measure Type
Primary Unit pH, mV (pH) pH, mV (pH/ORP) D.O. (% sat. & conc.) EC
Measure Range 0.00 to 13.00 pH 0.00 to 13.00 pH 0.0 to 500.0 % 0.0 to 200.0 mS/cm
±600.0 mV ±600.0 mV 0.00 to 50.00 mg/L 0.0 to 400 mS/cm
±2000.0 mV (absolute)
Temperature Range -5 to 55°C -5 to 55°C -5 to 55°C -5 to 55°C
Color Code Red Red White Blue
Materials Tip: glass (pH) Tip: glass (pH); Pt (ORP) Cat/An: Ag/Zn Stainless steel
Junction: ceramic Junction: ceramic Membrane: HDPE electrodes AISI 316
Body: PEI Body: PEI Body: white top ABS Body: ABS/EPOXY
Electrolyte: gel Electrolyte: gel CAP
Reference: double Reference: double
Maintenance HI 70300 HI 70300 HI 7042S none
Solution (storage solution) (storage solution) (D.O. electrolyte)
Dimensions 118 x 15 mm 118 x 15 mm 99 x 17 mm 111 x 17 mm
Depth 20 m (65’) 20 m (65’) 20 m (65’) 20 m (65’)
3.2 PROBE SPECIFICATIONS
Sensor Inputs 3 for HI 7698194
2 for HI 7698195 and HI 7698196
Sample Environment Fresh, brackish, seawater
Waterproof protection IP68
Operating Temperature -5 to 55° C *
Storage Temperature -20 to 70° C
Maximum Depth 20 m (66 ft.) *
Dimensions 342mm (13.5”),
(without cable) dia=46 mm (1.8”)
Weight 570g (20.1 oz.)
(with batteries and sensors)
Cable Specification Multistrand-multiconductor shielded cable with internal strength
member rated for 68 kg (150 lb) intermittent use
Wetted Materials Body: ABS
Threads: Nylon
Shield: ABS/ 316 SS
Temp probe: 316 SS
O-rings: EPDM

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4.2 SENSOR PREPARATION / ACTIVATION
4.2.1 pH Preparation
Remove the shipping cap from the pH sensor. If the shipping cap does not contain
any liquid, pour HI 70300 into shipping cap, place it back on the sensor and
soak for at least 1/2 hour before use. If HI 70300 is not available, pH 4.01
buffer may be substituted.
4.2.2 ORP Activation
For improved redox measurements, the surface of the sensor must be clean and
smooth. A pretreatment procedure should be performed to ensure quick response.
The pretreatment of the sensor is determined by the pH and the ORP potential
values of the sample. Use the table below to determine the treatment required.
First locate the typical sample pH. If the corresponding ORP value (mV) is higher
than the values in the table below, an oxidizing pretreatment is necessary. If the
value is lower, a reducing pretreatment is necessary.
pH mV pH mV pH mV pH mV pH mV
0990 1 920 2 860 3 800 4 740
5680 6640 7 580 8 520 9 460
10 400 11 340 12 280 13 220 14 160
For reducing pretreatment: immerse the electrode for at least five minutes in
HI 7091.
For oxidizing pretreatment: immerse the electrode for at least five minutes in
HI 7092.
Chapter 4 - PROBE INSTALLATION
4.1 SENSOR DESCRIPTIONS
HI 769828-0 Combination pH sensor features a glass pH
sensitive bulb and a silver/silver chloride double junction
reference with gelled electrolyte.
HI 769828-1 Combination pH/ORP sensor features a glass
sensitive bulb for pH readings, a platinum sensor for redox
measurements and a silver/silver chloride double junction
reference with gelled electrolyte.
Note See section 4.2.1 for pH preparation.
See section 4.2.2 for ORP activation.
HI 769828-2 Galvanic dissolved oxygen (D.O.) sensor. The
thin gas permeable membrane isolates the sensor elements
from the testing solution but allows oxygen to pass through.
The oxygen that passes through the membrane is reduced
at the cathode and causes a current, from which the oxygen
concentration is determined. The D.O. sensor conforms to
Standard Methods 4500-AG, EPA 360.1.
Note The D.O. sensor needs to be activated before instal-
lation. See section 4.2.3 for details.
HI 769828-34 ring-electrode conductivity (EC/TDS/Resistivity/
Salinity) sensor. The sensor is immune to polarization or surface
coatings.

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4.2.3 D.O. Sensor Activation
The D.O. probe is shipped dry. To prepare the sensor for use:
•Remove the black & red plastic cap. This cap is used for shipping purposes
only and can be thrown away.
•Insert the supplied O-ring in to the membrane cap.
•Rinse the membrane with some electrolyte solution. Refill with clean electrolyte.
Gently tap the membrane cap to dislodge air bubbles. To avoid damaging the
membrane, do not touch it with your fingers or directly tap the membrane.
•With the sensor facing down screw the membrane cap counterclockwise to the
end of the threads. Some electrolyte will overflow.
•Rinse outside of sensor with deionized water.
•Invert sensor and inspect. There should be no bubbles or debris between the
membrane and sensor body.
4.2.4 EC Sensor Preparation
The EC sensor does not need to be soaked or hydrated before use. Use the small
brush included in the probe maintenance kit to clean and loosen any debris
before using.
4.3 SENSOR INSTALLATION
The HI 7698194 can support three different
sensors: Connector 1: pH, pH/ORP
Connector 2: D.O.
Connector 3: EC.
To make installation easier, the sensors have color-
coded caps and the sockets are identified with
colored triangles, corresponding to the colors of
the sensors (pH - red; EC - blue; DO - white).
The HI 7698195 support two different sensors:
Connector 1: pH, pH/ORP
Connector 2: EC
The HI 7698196 support two different sensors:
Connector 1: pH, pH/ORP
Connector 2: DO

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Chapter 5 - INITIALIZATION AND MEASUREMENT
5.1 BATTERY INSTALLATION
HI 9819X are supplied with 4 alkaline, size AA batteries.
The battery symbol on the LCD indicates the remaining battery life. The meter
has a low battery warning, and when the symbol starts blinking, batteries should
be replaced with new ones. When the batteries are discharged the meter will
automatically shut off to avoid erroneous readings.
Replace batteries in nonhazardous areas only.
Remove the 4 screws on the rear of the instrument and insert the batteries
observing polarity.
Note: Do not mix old and new alkaline batteries.
For a correct installation:
•Grease the sensor O-ring with the lubricant found in the probe maintenance
kit. DO NOT SUBSTITUTE other grease/lubricants as it may cause the O-ring
to swell.
•Insert the sensor into the correctly color coded opening while positioning the
connector key toward the center of the probe. Make sure the connector is
seated correctly (the sensor will no longer move freely) before tightening the
locking threads with your fingers.
•Continue to tighten the locking threads with the tool supplied in the maintenance
kit until the sensor is secured tightly against the probe body.
•To protect the sensors, screw the protective shield onto the probe body.
•With the meter off, connect the probe to the DIN socket on the bottom of the
meter. Align the pins and key then push the plug into the socket. Secure the
probe by attaching the carabinier of the probe to the meter piston.
•Turn on the meter by pressing the ON/OFF key. The meter should automatically
recognize the installed sensors and identify them on the probe status screen. If
you have an error message or the sensor is not recognized, reconnect the
sensor(s) or probe and try again.

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5.3 MEASUREMENT MODE
Measurement mode is one of the three main operating modes of HI 9819X
(along with logging mode and setup mode).
During measurement mode HI 9819X will simultaneously measure data for all
enabled parameters.
•Use the numbers on the keyboard to select the number of parameters that are
shown on the screen at one time. The display will automatically resize the font.
•Press the [up] and [down] arrows to scroll through the enabled parameters if
they do not fit on one screen.
Note A flashing measurement value indicates that the measurement is out of
range.
A flashing measurement unit indicates that the user calibration has not
been done and is needed for accurate readings.
•Press Log to enter the log menu. See Chapter 11 for details.
•Press Menu to enter the main setup menu. The main menu accesses the pa-
rameter setup, calibration, system setup and status options. See the follow-
ing chapters for details.
5.2 METER INITIALIZATION
After connecting the desired sensors to the probe and connecting the probe to
the meter (see previous chapter), turn the meter on by pressing ON/OFF.
After the initialization has been completed if the probe is connected, the meter
displays the PROBE STATUS SCREEN. The probe status screen identifies the
probe and attached sensors. If an incompatible probe was connected the
following message appears and the probe has to be replaced. The compatible
meter-probe pairs are: HI 98194 - HI 7698194; HI 98195 - HI 7698195;
HI 98196 - HI 7698196.
If an incompatible sensor was connected to the probe, “Incompat.sensor!”will
be displayed according to the respective connector. If the sensor was placed in
a wrong connector, “Wrong input” will be displayed for that connector.
Two active soft keys are found at the bottom of the status screen.
•Press Measure to access the measurement mode.
•Press Param to access the “Select Parameter” menu. (This screen can also be
accessed from the main menu, see Chapter 6 for a detailed description.).
•Press the DOWN arrow to view additional information about the probe.

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Chapter 6 - PARAMETER SETUP MENU
From the main menu, use the arrow keys to
highlight Parameter Setup and then press Select.
The following options will be displayed:
6.1 SELECT PARAMETERS
Use the ARROW keys to scroll through the menu.
Press the right softkey to enable or disable a single
parameter, or the left softkey to enable or disable
all parameters. A checked box means that the
parameter is enabled.
Only the available parameters are present in the
list.
Note If the password protection is enabled, you will be required to enter
the password before any parameters can be modified.
6.2 PARAMETER UNITS
6.2.1 Temperature Unit
The user can select the measurement unit: °C, °F
or K. The default value is °C.
6.2.2 TDS Unit (HI 98194, HI 98195 only)
The user can select ppm - ppt or mg/L - g/L
measurement unit. The default value is ppm - ppt.
6.2.3 DO Concentration Unit (HI 98194)
The user can select ppm or mg/L. Dissolved Oxygen
concentration is calculated using % saturation,
conductivity and atmospheric pressure. The default
value is ppm.
6.2.4 Pressure Unit
The user can select one the following measurement
units: psi, mmHg, inHg, mbar, atm, kPA. The
default value is psi.
5.4 SETUP MENU STRUCTURE

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6.3 PARAMETER COEFFICIENTS
6.3.1 EC Reference Temperature (HI 98194,
HI 98195 only)
This value is used for temperature compensated
conductivity. All EC measurements will be referenced
to the conductivity of a sample at this temperature.
Press the softkey to select the desired option; 20 °C or at 25 °C. The default value
is 25 °C.
6.3.2 EC Temperature Coefficient (HI 98194,
HI 98195 only)
The temperature coefficient Beta (β) is defined by
the following equation (using 25 °C as an example):
EC25=ECx/(1+β(Tx-25))
Beta is a function of the solution being measured. For freshwater samples Beta is
approximately 1.90%/°C. If the actual temperature coefficient of your sample is
known, press Modify to enter the value. To confirm press Accept. The value can
be within 0.00 and 6.00%/°C. The default value
is 1.90%/°C.
6.3.3 TDS Factor (HI 98194, HI 98195 only)
TDS stands for total dissolved solids, and it is a
calculated value based on the conductivity of the
solution (TDS = factor x EC25). The TDS conversion factor can be set from 0.00 to
1.00. A typical TDS factor for strong ionic solutions is 0.5, while for weak ionic
solutions (e.g. fertilizers) is 0.7. Press Modify to enter the value, press Accept to
confirm. The default value is 0.50.
6.4 Averaging
Averaging is a software filter to minimize sensor
noise and provide more stable readings.
Averaging is particularly useful to get a
representative reading of the “average” value from
flowing water. Averaging will affect all
measurements. This value should be kept low if
you want a fast response. Press Modify to select
the desired number of samples to average. This
value can be set from 1 to 20 samples. The
default value is 1.
Note Each reading takes 1 second, so when logging the first sample will be
delayed by a few seconds if averaging is used.
6.2.5 Resistivity Unit (HI 98194, HI 98195 only)
The user can select resistivity from one of the
following measurement units: Ω·cm, kΩ·cm or
MΩ·cm. Resistivity is calculated from the conductivity
measurement. The default unit is MΩ·cm.
6.2.6 Seawater Sigma Unit (HI 98194, HI 98195 only)
This parameter is used for seawater analysis. It is
calculated from the conductivity measurement and
depends on water pressure, temperature and salinity.
The default value is σt.
Users can select the reference temperature: σt, σ0
and σ15 (i.e. current temperature, 0 °C or 15 °C).
6.2.7 EC Resolution (HI 98194, HI 98195 only)
The user can configure the conductivity resolution
with one of the following options:
Auto: the meter automatically chooses the range
to optimize the measurement. Readings can be in
µS/cm or mS/cm.
Auto mS/cm: the meter automatically chooses
the range to optimize the measurement, readings will be in mS/cm only.
1µS/cm, 0.001 mS/cm, 0.01mS/cm, 0.1mS/cm or 1mS/cm: the meter will not
autorange, the measurement will be displayed with the selected resolution. The
default value is Auto.
6.2.8 Absolute EC Resolution (HI 98194, HI 98195 only)
Absolute conductivity displays the conductivity without temperature compensation.
See 6.2.8 EC resolution for resolution details.
Note A small letter “A” added to the µS/cm or mS/cm unit refers to an absolute
conductivity value (i.e. a conductivity reading with no temperature
compensation).
6.2.9 TDS Resolution (HI 98194, HI 98195 only)
The user can configure the TDS resolution with one of the following options:
Auto: the meter automatically chooses the range to optimize the measurement,
readings can be in ppt or ppm.
Auto ppt: the meter automatically chooses the range to optimize the measurement,
readings will be in ppt only.
1 ppm, 0.001 ppt, 0.01 ppt, 0.1 ppt or 1 ppt: the meter will display the
measurement with selected resolution. The default value is Auto.

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7.1 QUICK CALIBRATION
The quick calibration method provides a quick single point calibration for pH,
conductivity and dissolved oxygen sensors. HI 9828-25 calibration solution is
used for both pH and conductivity.
•Fill the calibration beaker 2/3 full with HI 9828-25 calibration solution.
•Slowly place the sensors into the solution and
dislodge bubbles that may adhere to the sensors.
•Screw the calibration beaker completely on the
probe body. Some solution may overflow.
•Wait a few minutes for the system to stabilize.
•From the “Calibration” menu select “Quick
calibration”.
•A three item calibration menu will appear (pH,
Conductivity and Dissolved oxygen) and “pH”
will start to blink along with the “Not ready”
message.
•When the pH signal is stable, the “Ready”
message appears. Press Confirm to store the
calibration data.
•The “Storing” message will appear as the
calibration proceeds to the next sensor. A
checkmark will appear in the box next to “pH”
to indicate a successful calibration.
Note To bypass any of the calibrations press
Skip to move to the next sensor in the
quick calibration menu.
If the pH sensor is not installed the
message “pH sensor not installed! Skip
to conductivity calibration” will appear.
•Following the pH calibration, “Conductivity” will start to blink along with the
“Not ready” message.
•When the measurement is stable, “Ready” appears. Press Confirm to store
the calibration data and the “Storing” message will appear.
Note If EC calibration is not required, skip to
the D.O. quick calibration by pressing the
Skip softkey.
•The message “Empty the beaker.” will appear.
Chapter 7 - CALIBRATION MODE
HI 9819X’s calibration routines are accessed by highlighting “Calibration”
and pressing Select from the main menu. Calibration is the process that
standardizes the electrical signal from the sensors to reagent standards of
known value.
Calibrations are intuitive and menu driven. All
calibration data is stored in the non volatile probe
memory, allowing probes to be connected to
different meters without recalibration.
There are two types of calibrations available: the
“Quick calibration”, which is used for a single
point calibration of pH, Conductivity, and/or Dissolved Oxygen and is handy for
field work; and the “Single param. calibration”that allows each parameter
to be calibrated individually. The user may also restore each parameter to a
factory default calibration.
Note The password will be required if password protection is enabled.
To optimize measurements, it is advisable to establish the optimum calibration
period required for the measurement environment.
Calibration requirements vary with deployment conditions, for example very turbid
biologically-active waters may require more frequent cleanings and calibrations
than cleaner waters.
General calibration guidelines are listed below:
•Set up a routine service schedule where measurement integrity is validated.
This is especially important for new installation sites or long deployments.
•Inspect sensor connectors for corrosion and replace damaged sensors.
•Inspect sensor o-rings for damage and if necessary replace and lubricate with
the grease found in the probe maintenance kit.
•Do not handle the sensing surfaces of the sensors.
•Avoid rough handling and abrasive environments that can scratch the reactive
surfaces of the sensors.
•Avoid long-term exposure of sensors to bright sunlight. If possible, calibrate in
a shaded area.
•Discard standards after use. Do not return the used standards to the bottles of
“fresh” solution.
•For measurements across a temperature gradient (when water temperature is
drastically different from the standards), permit the sensors to reach thermal
equilibrium before conducting calibrations or making measurements. The heat
capacity of the probe is much greater than the air and the small beakers of
calibration standards.

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7.2.2 Procedure
The measured pH value is displayed, along with the temperature and the buffer
value on the second level.
If necessary, press the Cal point softkey and use the arrow keys to select the
correct buffer.
•Immerse the sensors in the first buffer rinse
solution and stir gently.
•Immerse the pH sensor and temperature
probe into the selected buffer and stir gently.
The temperature, pH buffer value and the “Not
ready” message are displayed.
•Once the reading has stabilized the countdown
timer will count down until the display shows the
“Ready” message.
•Press Confirm to accept the calibration point.
•After the calibration point is confirmed, to avoid
cross-contamination immerse the sensors in the next calibration buffer rinse
solution and stir gently.
•Press Cal Point to select the next buffer (if necessary), and repeat the calibration
procedure outlined above with the second and third buffers.
Note The calibration procedure can be terminated after a single or 2 point
calibration by pressing ESC. The message “Storing” followed by “Calibration
completed” will be displayed.
•Press OK to return to the Calibration menu.
•Press Measure to return to the measurement screen.
Custom buffer calibration
•The HI 9819X permits a single custom buffer to
be used for pH calibration. This can be used
along with standard buffers as part of a 2 or 3
point calibration or as a single point.
•To select this option first press Cal. point and
then Custom while the meter is waiting for stable
reading.
•A text box window will appear. Use the keypad to enter the value of the buffer at
the current temperature. The valid range for custom a buffer is from 0.00 to
14.00 pH.
•Unscrew the calibration beaker and empty the solution.
•Shake any remaining liquid off the probe and beaker. No droplets should remain
on the D.O. sensor membrane.
Note Do not attempt to dry wipe the D.O. sensor as damage to the membrane
may occur.
•Screw the empty calibration beaker on the probe body. The beaker should not
be dry.
•Press Accept to close the displayed message.
•When the measurement is stable, “Ready”
appears. Press Confirm to store the calibration
data and the “Storing” message will appear.
•Press OK to return to “Calibration” menu.
Note To quit the quick calibration procedure,
press ESC at any time.
After every calibration the quick calibration window will show a check mark in
the box next to the calibrated parameter.
7.2 pH CALIBRATION
To optimize the pH measurement follow the general guidelines mentioned in the
Chapter 7 introduction.
From the “Calibration” menu select “Single param.
calibration” and then “pH calibration”. The display
shows two options: “Calibrate pH” and “Restore
factory calib.”.
If a new pH sensor has been installed use “Restore
factory calib.” before performing a user calibration
as some warning messages are based on changes from previous calibrations.
If “Restore Factory Calib” is selected, all user calibration data will be deleted and
the default calibration is restored. A user calibration should follow immediately.
If “Calibrate pH” is selected, the user can perform a new calibration using up to
3 buffers (pH 4.01, 6.86, 7.01, 9.18, 10.01 or one custom buffer).
When a 3-point calibration is performed, all old data are overwritten, while with
a single or 2-point calibration the meter will also use information from the previous
calibration, if exists.
7.2.1 Preparation
Pour small quantities of the selected buffer solutions into clean beakers. To
minimize cross contamination, use two beakers for each buffer solution: the first
one for rinsing the sensor and the second one for calibration.

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7.3 Relative mV CALIBRATION
The “ORP calibration” allows the user to perform a single point custom calibration
(relative mV) or to restore the factory calibration.
The Oxidation-Reduction Potential (ORP), displayed in mV, is the voltage that
results from the difference in potential between the platinum ORP sensor and the
silver/silver chloride reference electrode. ORP values are not temperature
compensated, although ORP values can change with temperature (e.g. reference
electrode potential changes, sample equilibrium changes). It is important to report
ORP values together with the reference electrode used and the temperature.
The inert platinum ORP surface provides an electron exchange site with the sample
(or standard) and its surface. The electron exchange is typically very fast in
well-poised solutions (standards for example), but may be more lengthy in natural
water samples.
Calibration is typically not required for a new ORP sensor, but the process does
establish a baseline that can be used as a comparison for future validations.
Calibration is used to compensate for changes due to contamination of the
platinum surface and drift in the reference electrode.
A relative mV calibration can also be made to remove the voltage attributable to
the Ag/AgCl reference electrode (to display the ORP versus a SHE (standard
hydrogen electrode). This is really an arithmetic correction and is correct only at
the standard temperature. For example, HI 7022L reads 470 mV at 20 °C
versus the Ag/AgCl reference. The ORP mV versus a SHE would be 675 mV.
(add 205 mV to the observed value).
7.2.3 pH Calibration Error Messages
The HI 9819X displays a series of messages if an error has occurred during
calibration.
If the meter does not accept a pH calibration point, a short message is displayed
to indicate the possible error source. The following screens are examples:
These are the available messages:
•“Input out of scale”: the pH value is out of range. The pH sensor may require
replacement.
•“Check sensor”: the electrode may be broken, very dirty or the user has
attempted to calibrate the same buffer value twice.
•“Wrong buffer”: the displayed pH reading is too far from the selected buffer
value. This is often seen immediately after a buffer calibration has been completed
but before the pH sensor has been moved to the next buffer. Check if the
correct calibration buffer has been selected.
•“Invalid temperature”: the buffer temperature is outside the acceptable range.
•“Wrong buffer” / “Contaminated buffer” / “Check electrode”: the buffer is
contaminated or the sensor is broken or very dirty.
•“Check sensor” / “Clean sensor”: the electrode is broken or very dirty.
•“Wrong” / “Clear old calibration”: erroneous slope condition. These messages
appear if the slope difference between the current and previous calibration
exceeds the slope window (80% to 110%). Press the Clear softkey to cancel
the old data and continue the calibration procedure, or press ESC to quit the
pH calibration mode.

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If the % D.O. saturation range is calibrated, the D.O. concentration range will
also be calibrated, and vice versa.
Dissolved oxygen concentration values are based
on % D.O. saturation, temperature, salinity and
atmospheric pressure. A standard solution or a
reference D.O. meter may be used to compare
readings during calibration.
The calibration of the D.O. concentration range
can only be performed at a single custom point (4 to 50 mg/L). It is recommended
to calibrate the D.O. sensor close to the values that will be measured.
Choose “DO calibration” from the “Calibration” menu, select the D.O. calibration
type using the arrow keys and press Select to confirm.
% D.O. saturation
The calibration of the % D.O. saturation range can be performed at a single or
2 standard points (0 % and 100 %), or at a single custom point (50 % to 500 %).
Procedure:
•To calibrate at 100 %, fill the calibration beaker
with approximately 4 mm (5/32") of water and
screw it onto the probe. The membrane should
not be wet. This condition corresponds to air
100 % saturated with oxygen and water vapor.
•The reading, temperature, calibration point and
the “Not ready” message are displayed.
•Once the reading has stabilized the countdown
timer will count down until the display shows
the “Ready” message.
•Press Confirm to accept the calibration point.
After confirmation, put the D.O. and temperature sensors into HI 7040L zero
oxygen solution and wait for stability to be reached. The stability timer will count
down and Confirm will appear. Press Confirm to store the calibration.
•The following messages will appear: “Storing” and “Calibration completed”.
•Press OK to return to the “Calibration” menu.
•Press ESC twice to return to the main menu.
•Press Measure to return to the measurement screen.
Note The user can perform a single point calibration by pressing ESC after
the first point is accepted.
Note If the D.O. input is not within the acceptable range, the message “Invalid
input” is displayed.
7.3.1 Preparation
Appendix D – ACCESSORIES lists Hanna solutions used for ORP calibrations.
The calibration should be conducted at temperatures between 20-26 °C. The
sensor should be clean and oil free.
7.3.2 Procedure
•From the “Calibration” menu select “Single
param. calibration” and then “ORP calibration”.
The display shows two options: “Custom ORP”
and “Restore factory calib.”.
•For a user calibration select “Custom ORP”.
•Fill a beaker with an ORP test solution (see
APPENDIX D “Accessories”).
•Using the keypad, insert the numerical ORP
value and then press Accept to confirm.
•The stability counter will count down and the
message “Ready” and Confirm will be
displayed.
•Press Confirm to accept the calibration point.
•After confirmation, the following messages are displayed: “Storing” and
“Calibration completed”.
•Press OK to return to the Calibration menu.
•Press Measure to return to the measurement screen.
•To restore the factory calibration data, select the corresponding option in the
“ORP calibration” menu and then press Select.
7.4 DISSOLVED OXYGEN CALIBRATION (HI 98194, HI 98196 only)
The accuracy of dissolved oxygen measurements is directly related to membrane
cleanliness and calibration technique. Oily coating and biological contaminants
are the primary cause of calibration drift in dissolved oxygen sensors. Unfortunately,
brushes or other cleaning objects may damage the membrane. Replacing the
membrane cap and electrolyte is the best way to perform periodic maintenance.
Although it may be easier to calibrate the D.O. sensor prior to deployment, it is
advised to calibrate at the site of deployment. Errors in measurement may result
if altitude and barometric pressure differ between the calibration and measurement
site. This is very important for autonomously logging probes.
Note Perform either the % D.O. Saturation or D.O. Concentration calibration.

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Note For a correct conductivity calibration, the probe shield or the calibration
beaker must be used.
The conductivity calibration menu includes
3 different types of calibration: Conductivity,
Absolute conductivity and Salinity.
The “Conductivity” option allows a single point
calibration with a standard solution selectable by
the user. This calibration is temperature
compensated.
The “Absolute conductivity” option allows a single point calibration with a
conductivity solution of known non-temperature compensated value at the current
temperature.
The “Salinity” option allows calibration with a standard salinity solution.
The 3 calibrations are related, so that each one will calibrate all 3 measurements.
Note To improve accuracy, choose a calibration standard near the sample
conductivity.
Choose “Conductivity calibration” from the “Calibration” menu, select the
calibration type using the arrow keys and press Select to confirm.
Conductivity
•Select the “Conductivity” option and press Select to confirm.
•Fill the calibration beaker with a conductivity standard (see APPENDIX D -
“Accessories” for choosing the proper HANNA standard solution).
•Pour additional standard into a second beaker to be used to rinse the sensor.
•Immerse the sensor into the rinse standard by raising and lowering the beaker
a few times to ensure that the EC sensor channels are filled with fresh standard.
•Place the calibration beaker over the EC sensor and dislodge any trapped
bubbles. Screw the beaker into place. Wait for the reading to stabilize.
•The main display shows the actual reading, while the secondary level displays
the current temperature and the standard value.
•To change the standard value, press Cal. point and the list of available standard
values is displayed: 0 µS/cm, 84 µS/cm, 1413 µS/cm, 5.00 mS/cm, 12.88
mS/cm, 80.0 mS/cm and 111.8 mS/cm.
Single point Custom % saturation calibration
•For a calibration at another known value place sensor and temperature probe
into the known solution and change the calibration value, press the Cal. point
softkey and select the desired point.
•To insert a different calibration value, press Cal. point and then Custom.
Insert the desired value using the keypad, then press Accept.
•When the reading is stable, the “Ready” message is displayed. Press Confirm
to store the calibration point.
•The following messages will appear: “Storing” and “Calibration completed”.
•Press OK to return to the “Calibration” menu.
•Press ESC twice to return to the main menu.
•Press Measure to return to the measurement screen.
D.O. concentration (only HI 98194)
Verify the barometric pressure, conductivity and
temperature reading are correct. Calibrate them
if necessary. To calibrate the D.O. concentration
range, a solution with known Dissolved Oxygen
concentration value is needed. The solutions used
to calibrate with should be determined
independently (for instance by Winkler titration). Place the D.O. sensor with
temperature sensor into the known solution.
•From the “DO calibration” menu, select the “DO concentration” option, insert
the known concentration. Allow the sensors to reach thermal equilibrium with
the solution. Stir or agitate if possible to keep fresh solution in front of the
membrane and press OK.
•When the reading is stable, the stability timer will count down and <Confirm>
will appear. Press Confirm to accept the value.
•When the messages “Storing” and “Calibration completed” appear, the
calibration is completed. To return to the “Calibration” menu, press OK.
•To return to the main menu, press ESC twice.
7.5 CONDUCTIVITY CALIBRATION (HI 98194, HI 98195 only)
A conductivity calibration is used to adjust for variations in cell factors by using
a standard solution of known conductivity. Oily coating and biological
contaminants are the primary cause of calibration drift in conductivity sensors.
This type of fouling changes the apparent cell geometry, resulting in a shift in cell
constant. Before performing a conductivity calibration inspect the EC sensor for
debris or blockages. The EC electrodes are situated inside the two small channels
found in the bottom of the conductivity sensor. Clean using the small brush from
the probe maintenance kit. Flush with water. A mild detergent may be used to
remove oily coatings. Always flush with clean water after cleaning.