Waterproof PCD650 pH, Conductivity & Dissolved Oxygen Meter from Oakton Instruments

Simultaneously measure and display pH, Conductivity and Dissolved Oxygen

  • Expanded range, resolution, and accuracy, plus increased memory and advanced communications!

  • Ideal for use in dirty and wet environments

These top-of the-line waterproof meters offer features that are typically found on much more expensive models. The IP67-rated housing allows use in dirty and wet environments without harm to the meter. Datalog up to 500 points either automatically, manually, or at timed intervals. User-selectable calibration due alarms, automatic or manual standards recognition, and single or multiple calibration points provide flexibility in meeting your data quality objectives. Infrared (IrDA) wireless technology lets you easily download datano need for additional cords. The large backlit LCD shows the measured value, measured units, temperature, time, battery life, and menu options.


Measures pH, Conductivity, Dissolved Oxygen
pHRange -2.000 to 19.990
pHResolution 0.1, 0.01, 0.001
pHAccuracy 0.002
pHCalibration US, DIN, NIST and Custom buffers
mVRange 2000
mVResolution 0.1
mVAccuracy 0.2 mV
mVCalibration 150 mV
IonRange 0.001 to 19,900 ppm, molar, or mg/L
IonResolution 2 or 3 digits
IonAccuracy 0.5% FS (monovalent); 1% FS (divalent)
IonCalibration Up to 6 points
ConductivityRange 0 to 500 mS
ConductivityResolution 0.05% full scale
ConductivityAccuracy 1% full scale
ConductivityCalibration Manual up to 5 points (1 per range); automatic up to 4 points (84.0 S/cm; 1413 S/cm; 12.88 mS/cm, 111.8 mS/cm)
TDSRange 0 to 200 ppm
TDSResolution 0.05% full scale
TDSAccuracy 1% full scale
% saturationRange 0 to 600%
% saturationResolution 0.1%
% saturationAccuracy 2%
% saturationCalibration 2 points
mg/l (ppm)Range 90 mg/L
mg/l (ppm)Resolution 0.01 mg/L
mg/l (ppm)Accuracy 0.2mg/L
mg/l (ppm)Calibration 2 points
Salinity correction Manual
Barometric pressure correction Automatic
TemperatureRange 14 to 230F (-10 to 110C)
TemperatureResolution 0.1F to 199.9 F; 1.0F from 200 to 230F
TemperatureAccuracy 0.9F (0.5C)
TemperatureCalibration Offset 0.1C (0.1F) increments
ATC Automatic or manual, 0 to 100C
Power Four 1.5V batteries (included) or optional universal AC adapter
Memory 500 data sets with GLP
Real Time Clock Yes
RS-232 IrDA
Optional AC Power Yes
Built-in Stand In optional boot (included with kit version)
Dual Display 4 line plus indicators
Waterproof/Dustproof (IP67) Yes
Dimensions 7.25"L x 3.25"W x 2.25"H
Shipping weight 2 lbs