pH Range

-2.000 to 16.000 pH, -2.00 to 16.00 pH, ±1000 mV

pH Resolution

0.001 pH, 0.01 pH, 0.1 mV

pH Accuracy (@25ºC/77ºF)

±0.2 mV, ±0.01 pH, ±0.002 pH

pH Calibration

up to 5 points

pH Calibration Buffers

1.68, 10.01, 12.45, 4.01, 6.86, 7.01, 9.18, two custom buffers

pH Temperature Compensation

ATC: -5.0 to 100.0ºC; 23.0 to 212.0°F*

EC Range

0.00 to 29.99 μS/cm, 30.0 to 299.9 μS/cm, 300 to 2999 μS/cm, 3.00 to 29.99 mS/cm, 30.0 to 200.0 mS/cm, up to 500.0 mS/cm (absolute EC)**

EC Resolution

0.01 μS/cm, 0.1 μS/cm, 1 μS/cm, 0.01 mS/cm, 0.1 mS/cm

EC Accuracy (@25ºC/77ºF)

±1% of reading (±0.05 μS/cm or 1 digit, whichever is greater)

EC Temperature Compensation

ATC (0.0 to 100.0ºC; 32.0 to 212.0 °F), NoTC

TDS Range

0.00 to 14.99 ppm (mg/L), 15.0 to 149.9 ppm (mg/L), 150 to 1499 ppm (mg/L), 1.50 to 14.99 g/L, 15.0 to 100.0 g/L, up to 400.0 g/L (absolute TDS)**, with 0.80 conversion factor

TDS Resolution

0.01 ppm, 0.1 ppm, 1 ppm, 0.01 g/L, 0.1 g/L

TDS Accuracy (@25ºC/77ºF)

±1% of reading (±0.03 ppm or 1 digit, whichever is greater)

TDS Calibration

through EC calibration

TDS Conversion Factor

0.40 to 0.80

Salinity Range

0.0 to 400.0% NaCl, 2.00 to 42.00 PSU, 0.01 to 42.00 PSU, 0.0 to 80.0 g/L*

Salinity Resolution

0.1% NaCl, 0.01 PSU, 0.01 g/L

Salinity Accuracy (@25ºC/77ºF)

±1% of reading

DO Range

0.00 to 45.00 ppm (mg/L), 0.0 up to 300.0% saturation

DO Resolution

0.01 ppm, 0.1% saturation

DO Accuracy

±1 digit, ±1.5% of reading

DO Calibration

one or two points at 0% (HI 7040 solution) and 100% (in air)

DO Temperature Compensation

ATC: 0 to 50 ºC; 32.0 to 122.0 °F

Salinity Compenstaion

0 to 40 g/L (with 1 g/L resolution)

DO Altitude Compensation

-500 to 4000 m (with 100 m resolution)

Temperature Range

-20.0 to 120.0 ºC, -4.0 to 248.0 °F

Temperature Resolution

0.1 °C, 0.1 °F

Temperature Accuracy

±0.5 °C, ±1.0 °F

pH Electrode Diagnostics

Glass and reference junction diagnostics ( HI 11311 & HI 12301 only), out of calibration range , probe condition, response time

Logging

600 records interval logging, stores up to 1000 records: 200 records (log-on-demand and stability logging)

Connectivity

1 micro USB port for charging and PC connectivity, 1 USB port for storage

Environment

0 to 50°C (32 to 122°F), RH max 95% non-condensing

Power Supply

5 VDC adapter (included)

Dimensions

202 x 140 x 12.7mm (8” x 5.5” x 0.5”)

Ordering Information

HI2040 DO kit includes: HI764080 Dissolved Oxygen electrode, HI7041S Refill electrolyte solution, 2 DO membrane caps, 2 DO membrane cap o-rings and Quality certificate.

Notes

* temperature limits will be reduced to actual probe/sensor limits
** with temperature compensation function disabled