Get exclusive volume discounts, bulk pricing updates, and new product alerts delivered directly to your inbox.
By subscribing, you agree to our Terms of Service and Privacy Policy.
Direct access to our certified experts
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
mV Range: ±600.0 mV
mV Resolution: 0.1 mV
mV Accuracy: ±0.5 mV
ORP Range: ±2000.0 mV
ORP Resolution: 0.1 mV
ORP Accuracy: ±1.0 mV
ORP Calibration: automatic at one custom point (relative mV)
EC Range: 0 to 9999 µS/cm; 0.000 to 200.0 mS/cm (absolute EC up to 400.0 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: 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 9999 ppm (mg/L); 0.000 to 400.0 ppt (g/L) (maximum value depends on 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
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
Salinity Range: 0.00 to 70.00 PSU
Salinity Resolution: 0.01 PSU
Salinity Accuracy: ±2% of reading or ±0.01 PSU whichever is greater
Salinity Calibration: based on conductivity calibration
Seawater σ Range: 0.0 to 50.0 σt, σ₀, σ₁₅
Seawater σ Resolution: 0.1 σt, σ₀, σ₁₅
Seawater σ Accuracy: ±1 σt, σ₀, σ₁₅
Seawater σ Calibration: based on conductivity calibration
DO Range: 0.0 to 500.0%; 0.00 to 50.00 ppm (mg/L)
DO Resolution: 0.1%; 0.01 ppm (mg/L)
DO Accuracy: 0.0 to 300.0% saturation: ±1.5% of reading or ±1.0% saturation whichever is greater, 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, 300.0 to 500.0% saturation: ±3% of reading
DO Calibration: automatic one or two points at 0 and 100% or one custom point
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°C from the temperature during calibration
Atmospheric Pressure Calibration: automatic at one custom point
Temperature Range: -5.00 to 55.00 °C, 23.00 to 131.00 °F, 268.15 to 328.15 K
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
PC 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: HI98194/40 is supplied with HI7698194 probe with 40 meter cable, HI7698194-0 pH 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.
