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Hanna Instruments – HI98194 Multiparameter pH/ORP/EC/TDS/Salinity/DO/Pressure/ Temperature Waterproof Meter

The HI98194 is a rugged, waterproof multiparameter meter designed for comprehensive water quality analysis in laboratory and field environments. It measures pH, ORP, EC, TDS, salinity (PSU & seawater sigma), resistivity, dissolved oxygen (polarographic), atmospheric pressure, and temperature with high accuracy and automatic compensation features. Built with IP67-rated protection, the meter ensures reliable performance in demanding conditions. With advanced logging capabilities of up to 45,000 records, USB connectivity, and automatic calibration functions, the HI98194 delivers professional-grade performance for environmental and industrial applications.

  • Measures 10+ water quality parameters in one portable device
  • IP67 waterproof design for field use
  • 45,000 record data logging (continuous or on-demand)
  • Automatic pH, EC, DO, salinity, and pressure compensation

Description

The HI98194 multiparameter meter is engineered for accurate and reliable water analysis across a wide range of applications including environmental monitoring, wastewater treatment, aquaculture, and industrial process control. It provides precise measurement of pH (± 0.02 pH), ORP (± 1.0 mV), EC (up to 200 mS/cm), TDS (up to 400,000 ppm), salinity up to 70 PSU, resistivity up to 1.0000 MΩ·cm, dissolved oxygen up to 50.00 mg/L, and atmospheric pressure compensation. The meter features automatic multi-point calibration with standard buffer recognition and customizable calibration options for maximum flexibility.

Designed for durability and long-term field use, the HI98194 includes a polarographic dissolved oxygen sensor with automatic temperature, salinity, and barometric pressure compensation. The device supports continuous logging or log-on-demand for up to 45,000 records, with adjustable intervals from one second to three hours. USB connectivity with HI9298194 Hanna PC software allows efficient data transfer and management. Powered by four AA batteries, the meter provides up to 360 hours of continuous operation without backlight, making it ideal for extended field deployments.

Features

  • Comprehensive Multiparameter Measurement – Measures pH, ORP, EC, TDS, Salinity (PSU & σ), Resistivity, Polarographic DO, Atmospheric Pressure, and Temperature in one waterproof device.
  • High Accuracy Performance – pH accuracy ±0.02 pH; EC accuracy ±1% of reading; DO up to 50.00 mg/L; Resistivity up to 1.0000 MΩ·cm.
  • Automatic Multi-Point Calibration – Automatic recognition of five pH buffers; EC calibration with six standard solutions; DO calibration at 0% and 100% or custom point.
  • Advanced Compensation System – Automatic temperature, salinity (0–70 g/L), and barometric pressure (450–850 mmHg) compensation for accurate DO readings.
  • Large Data Logging Capacity – Stores up to 45,000 records with continuous logging or log-on-demand functionality.
  • Adjustable Logging Interval – User-selectable from 1 second to 3 hours.
  • IP67 Waterproof & Rugged Design – Fully protected against dust and water immersion for demanding field applications.
  • Long Battery Life – Up to 360 hours continuous use without backlight (approx. 50 hours with backlight).
  • USB Connectivity – Connects to PC via USB using HI9298194 Hanna software for data transfer and analysis.
  • Wide Measurement Ranges – EC up to 200 mS/cm (400 mS/cm absolute); TDS up to 400,000 ppm; Salinity up to 70 PSU.
  • Polarographic Dissolved Oxygen Sensor – Automatic one or two-point calibration with temperature compensation from 0 to 50°C.
  • Professional Field Kit Included – Supplied with multiparameter probe, pH/ORP sensor, EC sensor, DO sensor, maintenance kit, PC software, USB cable, batteries, and rugged carrying case.

Specifications

SKU HI98194-web
Product Name Multiparameter pH/ORP/EC/TDS/Salinity/DO/Pressure/ Temperature Waterproof Meter – HI98194
Quote Required Yes
pH Range 0.00 to 14.00 pH
pH Resolution 0.01 pH
pH Accuracy ± 0.02 pH
pH Calibration automatic one, two, or three points with automatic recognition of five standard buffers (pH 4.01, 6.86, 7.01, 9.18, 10.01) or one custom buffer
ORP Range ± 2000.0 mV
ORP Resolution 0.1 mV
ORP Accuracy ± 1.0 mV
ORP Calibration automatic at one custom point (relative mV)
mV Range ± 600.0 mV
mV Resolution 0.1 mV
mV Accuracy ± 0.5 mV
EC Range 0 to 200 mS/cm (absolute EC up to 400 mS/cm)
EC Resolution auto-ranging
EC Accuracy ± 1% of reading or ± 1 µS/cm whichever is greater
EC Calibration automatic single point, with 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
TDS Accuracy ± 1% of reading or ± 1 ppm (mg/L), whichever is greater
TDS Calibration based on conductivity or salinity calibration
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 based on conductivity calibration
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 σt, σ₀, σ₁₅
Salinity (Seawater Sigma) Calibration based on conductivity or salinity calibration
Resistivity Range 0 to 999999 Ω•cm; 0 to 1000.0 kΩ•cm; 0 to 1.0000 MΩ•cm
Resistivity Resolution dependent on resistivity reading
Resistivity Calibration based on conductivity calibration
Dissolved Oxygen Measurement Type Polarographic
Dissolved Oxygen Range 0.0 to 500.0%; 0.00 to 50.00 ppm (mg/L)
Dissolved Oxygen Resolution 0.1%; 0.01 ppm (mg/L)
Dissolved Oxygen Accuracy 0.0 to 300.0% saturation
Dissolved Oxygen Calibration automatic one or two points at 0 and 100% or one custom point
Dissolved Oxygen Temperature Compensation automatic from 0.0 to 50.0 °C (32.0 to 122.0 °F)
Barometric Pressure Compensation automatic from 450 to 850 mmHg
Salinity Compensation automatic from 0 to 70 g/L
Temperature Range Temperature Range
Temperature Resolution 0.01 K, 0.01 °C, 0.01 °F
Temperature Accuracy ± 0.15 °C; ± 0.27 °F; ± 0.15 K
Temperature Calibration automatic at one 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 one second to three hours
Connectivity USB to PC with HI9298194 Hanna software installed
Battery Type/Life 1.5V AA batteries (4) / approximately 360 hours of continuous use without backlight (50 hours with backlight)
Environment 0 to 50°C (32 to 122°F); RH 100% (IP67)
Dimensions 185 x 93 x 35.2 mm (7.3 x 3.6 x 1.4”)
Weight 400 g (14.2 oz.)
Ordering Information HI98194 is supplied with HI7698194 probe, HI7698194-1 pH/ORP sensor, HI7698194-3 EC sensor, HI7698194-2 DO sensor, HI 76981942 Probe maintenance kit (HI 7042S DO electrolyte solution, DO membrane caps (5), O-rings for sensors (5), syringe with grease to lubricate the O-rings), HI9298194 Hanna PC software, HI920015 micro USB cable, 1.5V AA batteries (4), instruction manual, quick start guide, quality certificate, and rugged carrying case with custom thermoformed insert.
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
Atmospheric Pressure Resolution 0.1 mm Hg; 0.01 in Hg; 0.1 mbar; 0.001 psi; 0.0001 atm; 0.01 kPa
Atmospheric Pressure Accuracy ± 3 mm Hg within ± 15% from calibration point
Atmospheric Pressure Calibration automatic at one custom point

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