The geochemical probe is resulting from a combination of R&D programs involving thermal shielding. It records multi-parameters such as Conductivity, Redox potential, pH, O2 (% sat & mg/l), Pressure, Temperature. It also includes a Gamma-Ray sensor in the telemetry.
Extremely useful in extreme environments such as CO2 storage and geothermal wells to look for potential corrosive conditions.

  imperial metric
Tool diameter 1-7/8" 48 mm
Length 6 ft 1870 mm
Weight 30 lbs 14.8 kg
Max. temperature (2h)  240 °F 115 °C
Max. pressure 5 800 psi 400 bar
Cable Mono or 4-cond. cable, up to 5000 m
Temperature (accuracy/resolution)0.005 / 0.001 °C
Pressure (accuracy/resolution)0.05% / 0.0015% FS
Conductivity in Salt water (Accuracy / Resolution) 0.007 / 0.001 mS/cm  -  max: 70
Conductivity in Fresh water (Accuracy / Resolution) 5 / 0.1 uS/cm
Oxygen (Accuracy / Resolution) 0.1 / 0.01 ppm
Oxygen saturation (Accuracy / Resolution) 1 / 0.1 %
pH (Accuracy / Resolution) 0.01 / 0.001
Redox (Accuracy / Resolution) 1 / 0.1 mV