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You are here: Product Catalog > Water analysis > Dissolved Oxygen (DO) Meter Selection Guide

Bench-top Dissolved Oxygen Meter

 
 
 

Dissolved Oxygen (DO) Meter

 


   

 HI 4421

 Range

 Dissolved Oxygen

0.00 to 90.00 ppm; 0.0 to 600.0% saturation 

 Barometric Pressure

 450 to 850 mmHg; 560 to 1133 mBar

 Salinity Compensation

 0 to 45 ppt (g/L)

 Temperature

 -20.0 to 120.0 °C; -4.0 to 248°F;
253.1 to 393.1 K

 Resolution  Dissolved Oxygen

 0.01 ppm; 0.1% saturation

 Barometric Pressure

 1 mm Hg

 Temperature

 0.1°C/°F/K

 Accuracy  Dissolved Oxygen

±1.5% of reading ±1 digit 

 Barometric Pressure

 ±3 mm Hg + 1 least significant digit

 Temperature

±0.2 °C/ K /°F 

 Measurement Modes

Direct DO;
BOD (biochemical oxygen demand);
OUR (oxygen uptake rate);
SOUR (specific oxygen uptake rate)

 Calibration  DO

 Automatic / user standard;
1 or 2 points

 Barometric Pressure

 Single point

 Temperature Compensation

 0.0 to 50.0° C; 32.0 to 122.0°F;
237.1 to 323.1 K

 Logging  Record Samples

 Up to 100 lots;
10000 samples/lot for automatic logging;
5000 samples/lot for manual logging

 Logging Interval

 from 1 second and up

 PC Connection

Opto-isolated USB and RS232 

 Power Supply

 12 Vdc adapter (included)

     

 
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