Hanna Instruments HI981954 User manual

INSTRUCTION MANUAL
HI981954
Multiparameter Portable Meter
pH/mV, ORP, EC, TDS, Resistivity,
Salinity, Seawaterσ,
Atmospheric Pressure & Temperature

All rights are reserved. Reproduction in whole or in part is prohibited without the written consent of the
copyright owner, Hanna Instruments Inc., Woonsocket, Rhode Island, 02895, USA.
Thank you for choosing a Hanna Instruments product.
Please read this instruction manual carefully before using this instrument.
This manual will provide you with the necessary information for correct use of this
instrument, as well as a precise idea of its versatility.
If you need additional technical information, do not hesitate to e‑mail us at
[email protected] or view our worldwide contact list at www.hannainst.com.
Dear
Customer,

3
TABLE OF CONTENTS
TABLE OF CONTENTS
1. PRELIMINARY EXAMINATION ............................................................................................... 5
2. GENERAL DESCRIPTION....................................................................................................... 6
3. SPECIFICATIONS................................................................................................................. 7
3.1. METER SPECIFICATIONS ............................................................................................ 7
3.2. PROBE SPECIFICATIONS ............................................................................................ 9
3.3. SENSOR SPECIFICATIONS .......................................................................................... 9
4. DISPLAY & KEYBOARD DESCRIPTION.................................................................................. 11
5. SENSOR PREPARATION & INSTALLATION ............................................................................ 13
5.1. SENSOR TYPES & DESCRIPTIONS ............................................................................. 13
5.2. SENSOR PREPARATION & CONDITIONING ................................................................. 13
5.3. SENSOR INSTALLATION ........................................................................................... 14
5.4. SENSOR MAINTENANCE........................................................................................... 15
6. GENERAL OPERATIONS...................................................................................................... 17
6.1. BATTERY CAPACITY & REPLACEMENT......................................................................... 17
6.2. CONNECTING THE PROBE......................................................................................... 18
6.3. TURNING THE METER ON......................................................................................... 18
6.4. BASIC OPERATIONS................................................................................................. 19
6.5. FUNCTIONAL DIAGRAM OF THE INSTRUMENT............................................................ 20
6.6. HELP ..................................................................................................................... 20
7. PARAMETER SETUP........................................................................................................... 21
7.1. PARAMETER SELECTION........................................................................................... 21
7.2. PARAMETER UNITS ................................................................................................. 21
7.3. PARAMETER COEFFICIENTS...................................................................................... 24
7.4. AVERAGING............................................................................................................ 25
8. CALIBRATION ................................................................................................................... 26
8.1. QUICK CALIBRATION................................................................................................ 27
8.2. pH CALIBRATION..................................................................................................... 28
8.3. ORP CALIBRATION................................................................................................... 31
8.4. CONDUCTIVITY CALIBRATION.................................................................................... 32
8.5. TEMPERATURE CALIBRATION ................................................................................... 35
8.6. ATMOSPHERIC PRESSURE CALIBRATION ................................................................... 35

4
TABLE OF CONTENTS
9. SYSTEM SETUP................................................................................................................. 37
9.1. METER SETUP......................................................................................................... 37
9.2. PROBE SETUP......................................................................................................... 40
10. STATUS ......................................................................................................................... 41
10.1. METER STATUS..................................................................................................... 41
10.2. PROBE STATUS..................................................................................................... 41
10.3. GLP...................................................................................................................... 42
11. MEASUREMENT.............................................................................................................. 44
12. LOGGING........................................................................................................................ 45
12.1. ONE SAMPLE ON METER........................................................................................ 45
12.2. START METER LOG................................................................................................. 46
12.3. LOG RECALL.......................................................................................................... 46
12.4. LOG NOTES .......................................................................................................... 48
13. PC CONNECTION............................................................................................................. 49
14. PROBE DEPLOYMENT...................................................................................................... 51
15. TROUBLESHOOTING / ERROR MESSAGES.......................................................................... 53
16. ACCESSORIES................................................................................................................. 54
CERTIFICATION...................................................................................................................... 57
RECOMMENDATIONS FOR USERS............................................................................................ 57
WARRANTY ........................................................................................................................... 58

5
PRELIMINARY EXAMINATION
1. PRELIMINARY EXAMINATION
Remove the instrument and accessories from the packaging and examine them carefully. For further
assistance, please contact your local Hanna Instruments Office or email us at [email protected].
HI981954 is delivered in a rugged carrying case and is supplied with:
• HI7698195 multiparameter probe
• HI7698194-1 pH/ORP sensor
• HI7698194-3 EC/TDS/Salinity/Resistivity sensor
• HI9828-20 Quick calibration standard solution (230 mL)
• HI7698295 protective probe shield
• HI76981952 probe maintenance kit
• HI7698290 calibration beaker
• HI920015 micro USB cable
• 1.5V AA batteries (4 pcs.)
• Instrument quality certificate
• Probe quality certificate
• Instruction manual
Note: Save all packing material until you are sure that the instrument works correctly. Any
damaged or defective item must be returned in its original packing material with the supplied
accessories.

6
GENERAL DESCRIPTION
2. GENERAL DESCRIPTION
Partof Hanna Instruments pool-line family,HI981954 is awaterproof portable logging multiparameter
system (meter and probe), that monitors up to 11 different water quality parameters (5 measured,
6 calculated) such as pH, ORP, conductivity, and temperature.
The HI7698195 microprocessor-based intelligent multisensor probe can use the HI7698194-1 sensor
for pH and ORP (or the HI7698194-0 sensor for pH) measurements, and the HI7698194-3 sensor
for conductivity and associated parameters. The probe also has an integrated temperature sensor that
allows for automatic temperature compensation of pH, conductivity and is supplied with a removable
protective shield.
The HI981954 features a graphic, backlit display that automatically sizes the digits to fit the screen
with on-screen graphing capability. Each parameter is fully configurable.
HI981954 is a rugged instrument, the ideal solution for a variety of water quality measurements.
The meter is enclosed in an IP67 rated waterproof casing and can withstand immersion in water at a
depth of 1 m for up to 30 minutes. The probe features an IP68 rating for continuous immersion in water.
Main Features
• Rugged, water-resistant meter and waterproof probe
• Monitors up to 11 different water quality parameters
• Graphical display of logged data on backlit LCD screen
• Auto recognition of the probe and field-replaceable, color-coded sensors
• Quick calibration feature
• Auto-ranging for EC readings
• Log-on-demand and automatic logging on meter for all parameters
• Dedicated help key for context sensitive help
• USB interface for PC communication
• Long battery life with alkaline batteries
• Good Laboratory Practice feature. Automatically stores the last 5 calibrations

7
SPECIFICATIONS
3. SPECIFICATIONS
3.1. METER SPECIFICATIONS
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 at 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)
Conductivity
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 1 custom point
Total
Dissolved
Solids
(TDS)
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

8
SPECIFICATIONS
Resistivity
Range 0 to 999999 Ω·cm; 0 to 1000.0 kΩ·cm; 0 to 1.0000 MΩ·cm
Resolution Depending on resistivity reading
Calibration Based on conductivity calibration
Salinity
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
Range 0.0 to 50.0 σt, σ0, σ15
Resolution 0.1 σt, σ0, σ15
Accuracy ±1.0 σt, σ0, σ15
Calibration Based on conductivity or salinity calibration
Atmospheric
Pressure
Range
450.0 to 850.0 mmHg; 17.72 to 33.46 inHg;
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 mmHg; 0.01 inHg; 0.1 mbar; 0.001 psi; 0.0001 atm; 0.01 kPa
Accuracy ±3.0 mmHg within ±15 °C from calibration temperature
Calibration Automatic at 1 custom point
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
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 HI9298194 software
Protection Rating IP67 (water-resistant)
Environment 0 to 50 °C (32 to 122 °F); RH 100 %
Battery Type 1.5V, AA alkaline batteries (4 pcs.)
Battery Life 360 hours of continuous use without backlight
Dimensions 185 x 93 x 35.2 mm (7.3 x 3.6 x 1.4”)
Weight 400 g (14.2 oz.)

9
SPECIFICATIONS
3.2. PROBE SPECIFICATIONS
Sensor Inputs Two (pH or pH/ORP, EC)
Sample Environment Fresh, brackish, seawater
Protection Rating IP68 (waterproof)
Operating Temperature -5 to 55 °C (23 to 131 °F)
Storage Temperature -20 to 70 °C (-4 to 158 °F)
Maximum Depth 20 m (66’)
Dimensions 342 mm (13.5”), Ø 46 mm (1.8”) (without cable)
Weight 570 g (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
Temperature probe 316 SS
O-rings EPDM
3.3. SENSOR SPECIFICATIONS
HI7698194-0
Description pH sensor
Measurement Type pH, mV (pH)
Measurement Range 0.00 to 13.00 pH ; ±600.0 mV
Temperature Range -5.0 to 55.0 °C (23.0 to 131.0 °F)
Color Code Red
Materials
Tip glass (pH)
Glass Type LT (low temperature)
Junction Ceramic
Body PEI
Electrolyte Gel
Reference Double
Maintenance Solution HI703004 Storage solution
Immersion Depth 20 m (65’)
Dimensions 118 x 15 mm

10
SPECIFICATIONS
HI7698194-1
Description pH/ORP sensor
Measurement Type pH, mV (pH/ORP)
Measurement Range 0.00 to 13.00 pH; ±600.0 mV; ±2000.0 mV
Temperature Range -5.0 to 55.0 °C (23.0 to 131.0 °F)
Color Code Red
Materials
Tip Glass (pH); Pt (ORP)
Glass Type LT (low temperature)
Junction Ceramic
Body PEI
Electrolyte Gel
Reference Double
Maintenance Solution HI703004 Storage solution
Immersion Depth 20 m (65’)
Dimensions 118 x 15 mm
HI7698194-3
Description EC sensor
Measurement Type EC
Measurement Range 0.0 to 200.0 mS/cm;
0.0 to 400 mS/cm (absolute)
Temperature Range -5.0 to 55.0 °C (23.0 to 131.0 °F)
Color Code Blue
Materials Electrodes Stainless steel (AISI 316)
Body ABS/EPOXY
Immersion Depth 20 m (65’)
Dimensions 111 x 17 mm

11
DISPLAY & KEYBOARD DESCRIPTION
4. DISPLAY & KEYBOARD DESCRIPTION
Front View
1
2
3
4
5
67
8
10
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1. Liquid Crystal Display (LCD)
2. Battery level indicator
3. Functional keys (soft keys), press to perform the function displayed above them on the screen
4. Power (On / Off) key, press to turn the meter on and off
5. Lamp key, press to turn the backlight on and off
6. Alphanumeric keypad, press to insert alphanumeric codes
7. Arrow keys, to scroll the displayed options and messages
8. HELP key, press to display the context sensitive help menu
9. ESC key, press to return to the previous screen
10. Soft key functions defined on display

12
DISPLAY & KEYBOARD DESCRIPTION
Top View
11 12 12
11. DIN connector for probe connection
12. Micro USB connector with protective cap
HI7698195 Multisensor Probe
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1. Strain relief
2. Probe body
3. Protective shield

13
SENSOR PREPARATION & INSTALLATION
5. SENSOR PREPARATION & INSTALLATION
5.1. SENSOR TYPES & DESCRIPTIONS
1. 2.
1. HI7698194-0 Combination pH sensor features a glass pH sensitive bulb and a silver/silver
chloride double junction reference with gelled electrolyte.
HI7698194-1 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.
2. HI7698194-3 four ring-electrode conductivity (EC/TDS/Salinity/Resistivity) sensor. The sensor
is immune to polarization or surface coatings.
5.2. SENSOR PREPARATION & CONDITIONING
EC Sensor
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.
pH/ORP Combination Sensor or pH Sensor
To prepare for installation:
1. Remove the shipping cap from the pH sensor.
2. If the shipping cap does not contain any liquid, pour HI703004 Storage solution into shipping cap.
3. Place it back on the sensor and soak for at least 1/2 hour before use. If HI703004 Storage
solution is not available, pH 4.01 buffer may be used.
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 pH / mV table 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.

14
SENSOR PREPARATION & INSTALLATION
For reducing pretreatment: immerse the electrode for at least five minutes in HI7091.
For oxidizing pretreatment: immerse the electrode for at least five minutes in HI7092.
pH mV pH mV pH mV pH mV pH mV
0 990 1 920 2 860 3 800 4 740
5 680 6 640 7 580 8 520 9 460
10 400 11 340 12 280 13 220 14 160
5.3. SENSOR INSTALLATION
The HI7698195 probe sensor connector sockets are identified with color-coded triangles:
• CONN1 - red connector (one triangle): pH or pH/ORP sensor
• CONN2 - blue connector (two triangles): EC sensor
6
7
2
1
3 4
5
8
1. Sensor sockets
2. EC/TDS/Salinity/Resistivity sensor
3. Temperature sensor
4. pH sensor
5. pH/ORP combination sensor
6. Strain relief
7. Probe body
8. Protective shield
To install the sensors follow the steps below:
1. Remove the protective shield from the probe and set it aside.
2. Use the supplied silicone grease sachet and sparingly lubricate the o-ring with a thin film of the
grease. Do not substitute other grease or lubricants as it may cause the o-ring to swell.
3. 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.

15
SENSOR PREPARATION & INSTALLATION
4. Continue to tighten the locking threads with the small hex key supplied in the maintenance kit
until the sensor is secured tightly against the probe body.
5. The sensors have to be conditioned and calibrated before use.
6. Screw the protective shield onto the probe body, to protect the sensors.
Note: To maintain a waterproof probe, if a sensor is not installed a plug must be inserted.
5.4. SENSOR MAINTENANCE
For correct sensor maintenance:
1. Unscrew the protective shield from the probe body and set it aside.
2. Use the calibration beaker for cleaning.
3. Use HI76981952 probe maintenance kit. See ACCESSORIES section for details.
General Maintenance
• Inspect all sensor connectors for corrosion and replace sensors if necessary.
• Inspect sensor o-rings for nicks or other damage and replace sensor if necessary.
Use only the supplied grease as some lubricants can cause the o-rings to expand.
• After prolonged storage or cleaning, calibration of the sensors is required.
• After use, rinse the probe with tap water and dry it. The pH electrode bulb must be kept moist.
Dry the EC sensor.
• Check GLP data under “Status” to ensure the sensor is still functioning properly.
pH & pH/ORP Sensor
• Remove the sensor protective cap. Do not be alarmed if any salt deposits are present. This is normal
with pH/ORP electrodes and they will disappear when rinsed with water.
• Shake down the sensor as with a clinical thermometer to eliminate any air bubbles inside the glass
bulb.
• If the bulb and/or junction are dry, soak the electrode in HI703004 Storage solution for at least
30 minutes.
• To ensure a quick response time, the glass bulb and the junction should be kept moist and not
allowed to dry. Store the sensor with a few drops of HI703004 Storage solution or pH 4.01 buffer
in the protective cap. Tap water may also be used for a very short period (few days).
Never use distilled or deionized water to store pH sensors.
• Inspect the sensor for scratches or cracks. If any are present, replace the sensor.

16
SENSOR PREPARATION & INSTALLATION
• Rinse the sensor in flowing water then clean the sensor by soaking it for 1 minute in HI70670
Cleaning solution for mineral deposits or HI70671 Cleaning & disinfection solution for algae, fungi
and bacteria. After cleaning soak the sensor in HI703004 Storage solution for 30 minutes before
taking measurements.
EC Sensor
After every series of measurements, rinse the probe with tap water.
If a more thorough cleaning is required:
• Clean the sensor with brush found in the maintenance kit to loosen any debris.
• Use a mild detergent to remove oily coatings.
• Ensure that the two cylindrical holes in the sensor are free of foreign material.
• Flush with purified water after cleaning.

17
GENERAL OPERATIONS
6. GENERAL OPERATIONS
6.1. BATTERY CAPACITY & REPLACEMENT
HI981954 is supplied with 4 Alkaline, 1.5 V AA batteries.
The battery level indicator on the LCD indicates the remaining battery life. If the battery capacity is
less than 10%, the indicator is displayed blinking and the batteries should be replaced with new ones.
The instrument is equipped with the BEPS (Battery Error Prevention System) feature, which
automatically turns the instrument off when the batteries reach 0%.
To replace the batteries:
1. Turn off the instrument.
2. Remove the four screws on the back of the instrument to open the battery compartment.
3. Remove the old batteries.
4. Insert four new 1.5V AA batteries in the battery compartment while paying attention to the
correct polarity. Do not mix old and new Alkaline batteries.
5. Close the battery compartment using the four screws.
Note: If the battery capacity is less than 25%, the backlight is no longer available.

18
GENERAL OPERATIONS
Meter Battery Life
The battery life is dependent on the backlight usage, logging interval, and sensor configuration.
The backlight will consume the most power.
pH/ ORP, 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
6.2. CONNECTING THE PROBE
The multiparameter probe is connected to the meter through a waterproof Quick DIN connector, making
attaching and removing the probe an easy process. When connected, the probe is automatically
detected.
• With the meter off, connect the probe to the DIN connector on the top of the meter.
• Align the pins and key then push the plug into the socket.
6.3. TURNING THE METER ON
After connecting the sensors to the probe and connecting the probe to the meter, turn the meter on
by pressing the On/Off key.
At start-up the display will show the Hanna Instruments logo, meter name and firmware version.

19
GENERAL OPERATIONS
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.
Press Measure to view the measurement screen. Log and Menu functional keys are displayed.
Press Param. to open the Parameters menu. This screen can also be accessed from the main menu.
Press the down arrow key to view additional information about the probe.
6.4. BASIC OPERATIONS
The main operating modes are setup, measurement and logging.
The instrument can be configured to display measurement data for all enabled parameters (up to 11).
The display has a feature that automatically sizes the digits to fit the screen. With fewer measurements
the digits will be largest.
Press the keys on the alphanumeric keypad (1 - 7) to select number of parameters displayed at one
time.
Use the arrow keys to scroll through the enabled parameters if they do not fit on one screen.
Note: Pressing 7 will display up to 11 parameters simultaneously.
Press Log to display the Log menu. Log a single sample or start an interval log. See LOGGING section
for detailed description.
Press Menu to select the measurement parameters (see PARAMETER SETUP section).
To calibrate the sensors, see CALIBRATION section.
To change system settings, see SYSTEM SETUP section.
To view the meter and probe status or GLP information, see STATUS section.

20
GENERAL OPERATIONS
6.5. FUNCTIONAL DIAGRAM OF THE INSTRUMENT
Menu and Log functional keys help user navigate through all measurement operations. The following
diagrams present an overview of possible functions.
One sample on meter
Log
Start Meter Log
Log Recall
Log Notes
Menu
Meter Setup
Probe Setup
Quick Calibration
Single Param. Calibration
Select Parameters
Parameter Units
Parameter Coefficients
Averaging
Meter Status
Probe Status
GLP
Calibration
Parameter Setup
System Setup
Status
6.6. HELP
To view the context sensitive help, press the HELP key. Use the arrow keys to scroll through the text.
To return to the previous screen, press the HELP or ESC key.