pH/Conductivity/Dissolved Oxygen meter with Optical Oxygen Sensor, Bluetooth



Item no. HI-98494

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2 945 €

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HI-98494 Multiparameter meter for pH, Conductivyty(EC) Dissolved Oxygen (DO), Bluetooth, 4m cable with Automatic interval logging of up to 45,000 samples or log-on-demand.

Functional and accurate, this meter is capable of testing 12 different water quality parameters using pH, EC, and optical DO sensors. Transfer data to a smart device for review or sharing with the integrated Bluetooth connection and Hanna Lab App.

  • Waterproof ( meter rated IP67, probe rated IP68)
  • Automatic interval logging or log-on-demand
  • Perfect for environmental and industrial professionals.

pH/ORP Sensor, EC sensor and Optical DO Sensor. The optical dissolved oxygen (DO) sensor uses a smart cap that has an RFID tag that keeps track of the age of the cap and alerts you when it should be replaced.

Measurements & Logging Measure up to 12 parameters. Don't lose important data with automatic interval logging of up to 45,000 samples or choose to log-on-demand to store measurement data for key points.

Dual Power Source The meter operates on a built-in lithium-ion battery and will automatically switch to AA alkaline batteries for at least 200 hours of testing.

GLP Data For better traceability, calibration information is recorded along with a time and date stamp and stored with logged data.

Quick-Calibration Quick Calibration provides a speedy, single point calibration for pH, conductivity, and dissolved oxygen. Standard calibration options are also available.

Built to be Durable Designed to withstand the knocks, drops, and spills of real life, the IP67 body ensures top performance in any environment. These meters are protected against dust and water intrusion from any direction.

Quick Connect Probe A Quick Connect DIN connector makes attaching and removing the probe simple and easy. The rubber coating protects the cable and provides a water-tight seal without twisting.

Data Transfer & Charging The USB Type-C port provides for easy data transfer to memory stick, PC, or other device and is used to charge internal lithium-ion battery.

Digital Probe Digital probe with built-in temperature sensor and three ports for pH (ORP), EC and optical DO sensors. Once connected, the meter aautomatically recognize the sensors.

Multiparameter Probe and Sensors Sensor replacement is quick and easy with field replaceable, screw type connectors and are color-coded for easy identification.

pH/ORP Sensor, EC sensor and Optical DO Sensor. 


The optical dissolved oxygen (DO) sensor uses a smart cap that has an RFID tag that keeps track of the age of the cap and alerts you when it should be replaced.

Connect in the Field Connect wirelessly via Bluetooth® to your smart device running the Hanna Lap App.


Measurement & Graphing Select the measurement units to be displayed on your smart device. For trend analysis, take a look at the graph of your logged data.
Good Laboratory Practices (GLP) Comprehensive GLP data can be reviewed for all parameters when the logged data is downloaded to your smart device.
Try the Hanna Lab App in demo mode

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pH Range 0.00 to 14.00 pH*
pH Resolution 0.01 pH
pH Accuracy ± 0.02 pH
pH Calibration one point, using HI9828-25 Quick calibration solution up to three points using five standard buffers (pH 4.01, 6.86, 7.01, 9.18, 10.01) and one custom buffer
pH Temperature Compensation automatic from -5 to 50 °C)
ORP Range ± 2000.0 mV
ORP Resolution 0.1 mV
ORP Accuracy ± 1.0 mV
ORP Calibration one point (relative mV)
mV Range pH in mV ± 600.0 mV
mV Resolution pH in mV 0.1 mV
mV Accuracy pH in mV
mV Relative Offset ± 0.5 mV
EC Range 0 to 200 mS/cm (absolute EC up to 400 mS/cm)
EC Resolution auto-ranging: 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; auto-ranging (fixed mS/cm): 0.001 mS/cm from 0.000 to 9.999 mS/cm; 0.01 from 100.0 to 400.0 mS/cm ; manual: 1 µS/cm; 0.001 mS/cm; 0.01
EC Accuracy ±1 % of reading or ±1 μS/cm, whichever is greater
EC Calibration One point, using HI9828-25 Quick calibration solution One point, using six 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
TDS Range 0 to 400000 ppm (mg/L); (the maximum value depends on the TDS factor)
TDS 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); auto-ranging: 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); auto-ranging (fixed ppt)
TDS Accuracy ±1 % of reading or ±1 ppm (mg/L), whichever is greater
TDS Calibration Based on conductivity calibration
EC/TDS Temperature Compensation automatic from -5 to 50 °C 
Temperature Correction Coefficient 0.00 to 6.00 %/°C
EC to TDS Conversion Factor 0.00 to 1.00
Reference Temperature 20 °C or 25 °C
Cell Type potentiometric four pole
EC/TDS Multi-range Measurement Modes yes
Salinity (PSU) Range 0.00 to 70.00 PSU
Salinity (PSU) Resolution 0.01 PSU
Salinity (PSU) Accuracy ±2% of reading or ±0.01 PSU, whichever is greater
Salinity (PSU) Calibration One point, using a custom solution
Salinity (Seawater Sigma) Range 0.0 to 50.0 σt, σ0, σ15
Salinity (Seawater Sigma) Resolution 0.1 σt, σ0, σ15
Salinity (Seawater Sigma) Accuracy ±1.0 σt, σ0, σ15
Salinity (Seawater Sigma) Calibration Based on conductivity or salinity calibration
Resistivity Range 0 to 999999 Ω·cm
Resistivity Resolution 1 Ω·cm; 0.1 kΩ·cm; 0.0001 MΩ·cm
Resistivity Calibration Based on conductivity or salinity calibration
Dissolved Oxygen Measurement Type optical luminscent technology
Dissolved Oxygen Range 0.00 to 50.00 mg/L
0.0 to 500.0 % saturation
Dissolved Oxygen Resolution 0.01 mg/L
0.1 % saturation
Dissolved Oxygen Accuracy ±1.5 % of reading ± 0.01 mg/L from 0.00 to 20.00 mg/L
±5 % of reading from 20.00 to 50.00 mg/L
±1.5 % of reading ±0.1 % from 0.0 to 200.0 % saturation
±5 % of reading from 200.0 to 500.0 % saturation
Dissolved Oxygen Calibration one point, quick calibration in water-saturated air
One or two points, at 100 % and 0 %
One point, using a custom solution (% saturation or mg/L )
Dissolved Oxygen Temperature Compensation automatic from -5 to 50 °C 
Altitude Compensation automatic: 420 to 850 mmHg
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
Atmospheric Pressure Resolution 0.1 mmHg; 0.01 in Hg; 0.1 mbar 0.001 psi; 0.0001 atm; 0.01 kPa
Atmospheric Pressure Accuracy ±3.0 mmHg within ±15°C from calibration temperature
Atmospheric Pressure Calibration One point using a custom value
Temperature Range -5.00 to 50.00 °C
Temperature Resolution 0.01 °C
Temperature Accuracy ±0.15 °C
Temperature Calibration One point using a custom value
pH Electrode HI7698194-0
pH/ORP Electrode HI7698194-1 (supplied)
EC/TDS Probe HI7698194-3 (supplied)
DO Probe HI7698494-5 (supplied)
Multi-parameter Probe HI7698494 (supplied)
Temperature Probe built-in
Logging Type interval and log on demand
Logging Memory 50000 records, interval logging
20000 records, log-on-demand of all parameters
Logging Interval 1 second to 3 hours
Connectivity Bluetooth®, USB-C (mass-storage host), USB-C (mass-storage device)
Automatic Shut-Off 5, 10, 15, 20, 30, 60 minutes or disabled
GLP yes
Display backlit dot matrix
Battery Type/Life Minimum 200 hours (AA batteries, without backlighting and Bluetooth®)
Minimum 50 hours (Li-ion battery, without backlighting and Bluetooth®)
IP Protection IP67
Environment 0 to 50 °C; RH 100 %
Dimensions 185 x 93 x 35.2 mm
Weight 435 g 
Ordering Information HI98494 is delivered in a rugged thermoformed carrying case and is supplied with, HI7698494 multi-sensor probe, HI7698194-1 pH/ORP sensor, HI7698194-3 EC/TDS/Resistivity/Salinity sensor, HI7698494-5 optical DO sensor, HI764113-1 DO smart cap with o ring, HI7698295 short protective probe shield, HI7698290 calibration beaker, HI9828-20 quick calibration standard solution (230 mL), HI7040 Zero oxygen solution set (120 mL), HI76984942 probe maintenance kit, HI920016 USB cable, 1.5V AA alkaline batteries (4 pcs.), instrument quality certificate, probe quality certificate, DO smart cap quality certificate, and instruction manual.
Notes *The range may be limited by the sensor’s limits.
Warranty Meter 2 years, sensors, electrodes and probes for six months

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