-2.00 to 16.00 pH、 -2.000 to 16.000 pH

resolution：0.01 pH、0.001 pH；accuracy@25 ° C/77 ° F: ± 0.01 pH, ± 0.002 pH

Three point or five point automatic recognition calibration and two custom calibrations, with built-in standard calibration points
【1.68、4.01、3.00、6.86、7.01、9.18、10.01、12.45pH】

pH-mVconvert：±1000 mV

pH-mVconvert：±1000 mV；ORP：±2000 mV
【 Recommended HI36180 and HI36200 redox electrodes 】

resolution：0.1 mV；accuracy@25°C/77°F：±0.2 mV

Resolution【pH-mV、ORP】：0.1 mV；
accuracy@25 ° C/77 ° F: ± 0.2 mV [pH mV]; ±0.2 mV (±999.9 mV); ± 1 mV (± 2000 mV) [ORP]

Calibration Mode

-20.0 to 120.0°C; -4.0 to 248.0°F

resolution: 0.1 ° C, 0.1 ° F;Accuracy:± 0.5 ° C, ± 0.9 ° F

electrode type

Data Storage

Automatic storage1000Group data, interval storage200Group data; Manual storage600set of data

1individualUSBPorts are used for data storage;1A miniatureUSBPort, used for charging and computer data transmission

Built-in rechargeable battery， 5VPower adapter and dedicated charging multifunctional bracket

0 to 50 °C (32 to 122 °F) max. RH 95%No condensation

Size:202 x 140 x 12 mm (7.9” x 5.5” x 0.5”)；Weight:250 g (8.82 oz.)

HI2020 Replace the acidity electrode withHI763100 Built in temperature sensor with four rings of platinumEC-TDSElectrode orHI764080Built in temperature sensor, digital polarographic dissolved oxygen electrode, achievableEC-TDS-DOProject measurement

measuring range

0.00 to 29.99 µ S/cm, 30.0 to 299.9 µ S/cm, 300 to 2999 µ S/cm3.00 to 29.99 mS/cm
30.0 to 200.0 mS/cm、up to 500.0 mS/cm(Actual/absolute conductivity, with temperature compensation turned off)

0.01 μS/cm、 0.1 μS/cm、1 μS/cm、0.01 mS/cm、0.1 mS/cm

accuracy@25º/77ºF

±1% ±（0.5 µS/cm perhaps 1One character), take the larger one

Zero point calibration in the air, single point automatic recognition calibration, built-in standard calibration points:84, 1413 µ S/cm; 5.00、12.88、80.0、118.8 mS/cm

EC/TDStemperature compensation

0.00 to 6.00%/°C，The default value is1.90％/°C

TDS
TDS

0.00 to 14.99 mg/L、15.0 to 149.9 mg/L、150 to 1499 mg/L/1.50 to 14.99 g/L15.0 to 100.0 g/L
up to 400.0 g/L(Actual/absolute total solid solubility, with temperature compensation turned off);TDSconversion coefficient：0.80

resolution

0.01 mg/L (ppm)、 0.1 mg/L (ppm)、 1 (ppm)、 0.01 g/L、 0.1 g/L

accuracy@25º/77ºF

±1% ±（0.03 mg/LOr1One character), take the larger one

TDSConversion factor

0.45 to 0.80（Default value：0.5）

By conductivityECcalibration

measuring range

0.0 to 400.0 % NaCl、2.00 to 42.00 PSU、0.0 to 80.0 g/L

resolution：0.1 % NaCl、0.01 PSU、0.01 g/L；accuracy@25 ° C/77 ° F: Reading±1%

Calibration Mode

g/L、PSUBy conductivityECcalibration， NaCl single point 100% calibration [HI7037 recommended]

electrode type

HI763100 Built in temperature sensor with four rings of platinumEC-TDSElectrode, interface type：3.5 mm，1Rice noodle length

dissolved oxygenDO：0.00 to 45.00 mg/L（ppm），Saturated dissolved oxygen：0.0 to 300.0 %

Resolution: Dissolved oxygenDO：0.01 mg/L（ppm），Saturated dissolved oxygen：0.1 %； Accuracy:reading1.5% ± 1digit

Single point or two-point calibration automatic calibration, zero point or air automatic calibration100％（8.26mg/L）calibration

Automatic compensation range 0 to 50°C（32.0 to 122.0°F）

0 to 40 g/L【resolution：1 g/L】

-500 to 4000 m (-1640 to 13120')【resolution: 100 meters (328 ')

HI764080Built in temperature sensor digital polarographic dissolved oxygen electrode, specification: 1 meter