Digital Portable pH-ISE-ORP Meter

HI98190 and HI98191 are IP67 rated waterproof meters designed for universal applications. HI98190 measures pH/ORP and temperature while HI98191 also includes ISE measurements. Exchange out the pH probe for an ORP probe to obtain mV readings in the ±2000 mV range. HI98191 adds direct ion concentration readings for ISEs with a choice of units for calibration and display.

The HI98190 features the HI12963 titanium bodied pH/temperature electrode with a quick connect DIN connector to make attaching and removing the probe simple and easy. The HI98191 is supplied with the HI72911B titanium bodied pH/temperature electrode with BNC and RCA connectors. ISE Sensors and Calibration HI98191 has 17 different standard ISE sensors pre-programmed in the meter. Selecting the appropriate sensor will automatically update the ion charge for slope calibration and can be calibrated up to five points with the choice of seven standards and five custom standards (choice of units). This meter allows an extensive choice of measurement units (ppm, ppt, g/L, ppb, ƒÊg/L, mg/mL, M, mol/L, mmol/L, % w/v, user) and has an expanded measuring range.

ISE measurement units - Extensive choice of units to display readings (ppm, ppt, g/L, ìg/L, mg/L, M, mol/L, mmol/L, %, w/v, user)
CAL Check - Alerts users to problems during calibration including dirty/broken electrode, contaminated buffer and overall probe condition
Automatic or manual temperature compensation - pH sensors incorporate a built-in temperature sensor
Calibration - Up to a five-point calibration with seven standard buffers and five custom buffers available
Approximately 200 hour battery life - Powered by (4) 1.5V AA batteries

Specifications:

pH
Range: -2.0 to 20.0 pH; -2.00 to 20.00 pH; -2.000 to 20.000 pH
Resolution: 0.1 pH; 0.01 pH; 0.001 pH
Accuracy: ±0.1 pH; ±0.01 pH; ±0.002 pH
Calibration: up to five-point calibration, seven standard buffers available (1.68, 4.01, 6.86, 7.01, 9.18, 10.01, 12.45) and five custom buffers
Temperature Compensation: automatic or manual from -20.0 to 120.0°C (-4.0 to 248.0°F)

mV
Range: ±2000 mV
Resolution: 0.1 mV
Accuracy: ±0.2 mV
Relative mV Offset Range: ±2000 mV

ISE
Range: from 1.00 E-. to 9.99 E1. concentration
Resolution: 3 digits 0.01; 0.1; 1; 10 concentration
Accuracy: ü}0.5% of reading (monovalent ions), ü}1% of reading (divalent ions)
Calibration: up to five point calibration, seven standard solutions available

Temperature
Range: -20.0 to 120.0 °C (-4.0 to 248.0°F)
Resolution: 0.1°C (0.1°F)
Accuracy: ±0.4°C (±0.8°F) (excluding probe error)

Additional Specifications:
pH Probe: HI98191: HI72911B titanium body, pH electrode with internal temperature sensor, BNC connector and 1 m (3.3 in. cable)
Slope Calibration: from 80 to 110%
Log-on-demand: HI98191: 300 samples (100 each pH/mV/ISE range)
PC Connection: opto-isolated USB with HI92000 software and micro USB cable
Battery Type / Life: 1.5V AA batteries (4) / approximately 200 hours of continuous use without backlight (50 hours with backlight)
Auto-off: user selectable: 5, 10, 30, 60 min, disabled

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