WQ 300 DO Kits

Each sensor kit includes optical DO sensor and its accessories.

Segment: Scientific
Division: Water Quality
Manufacturing Company: HORIBA, Ltd.
Model Description
WQ 300 DO Kit 2M
  • 300-D-2: Optical DO sensor head with 2 m cable, 1pc DO sensor cap, calibration bottle, stainless steel DO sensor protective guard
WQ 300 DO Kit 5M
  • 300-D-5: Optical DO sensor head with 5 m cable, 1pc DO sensor cap, calibration bottle, stainless steel DO sensor protective guard
Model 300-D-2 / 300-D-5
Dissolved Oxygen (DO) Range

0.00 to 20.00 mg/L

0.0 to 200.0 %

Resolution 0.01 mg/L, 0.1%
Accuracy ±0.2 mg/L, ±2 % 
Salinity Compensation

Auto: by conductivity sensor /

Manual: 0.0 to 40.0 ppt

Barometric Pressure Compensation

Auto: by built-in barometer /

Manual: 10.0 to 199.9 kPa

Calibration Points Up to 2
Oxygen Range 0.0 to 50.0%
Resolution  0.1%
Accuracy ±0.5% 
Temperature Range

-30.0 to 130.0 °C

-22.0 to 266.0 °F

Resolution 0.1 °C / °F
Accuracy ±0.5 °C / ±0.9 °F
Calibration Option Yes
Body Material ABS and polycarbonate
Length & Diameter 200 x 16 mm
Connector Push-pull
Cable Length 2m / 5m
DO Sensor cap included 1

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