pH Probe - Thermo Scientific

  • pH Probe Measurement Range pH measurement range from 0 to 14
  • pH Sensor Head pH sensor head is pre calibrated for pH and temperature measurement. Plug into any Datastick to yield accurate 24-bit data.
  • Universal DataStick Provides conversion of sensor signals and interactive communication for measurement, calibration, configuration and diagnostics
Product Options


A plug-and-play pH Sensor for use with the AquaSensors system. pH Probe connects directly to a computer or PLC for integration with industrial control systems. This allows data to be displayed and analysed, and for the instrument to be customized and calibrated without the need for intermediate controller box. The pre-calibrated pH sensor probe can be replaced or exchanged with any other type of sensor without any system downtime, saving time and money.

The Datastick pH probe is designed to be extremely strong, non-flowing, resistant to fouling and with exceptional chemical resistance. The internal electronics of the sensor are completely encapsulated and O-ring sealed, giving complete protection from humidity and moisture. An integral temperature sensor automatically compensates measurements for changes in process temperature, and a titanium ground electrode eliminates ground loop currents in the measuring electrode.

Manufactured by: Thermo Scientific
Model: pH Probe - Thermo Scientific

Services offered for this product

  • Sales
  • Rental
  • Installation
  • Calibration
  • Maintenance


Wastewater treatment
Neutralisation of effluent
- Steel
- Pulp and paper
- Food
- Chemical
- Pharmaceutical
Metal finishing (chrome/cyanide destruct)
High purity water
Odor scrubbers
Chemical & petrochemical
Reverse osmosis
Cooling tower control
Food processing
- Carbon dioxide control
- Cleaning
- Canning


Measurement System Performance†
Range 0 to 14 pH
Resolution 0.01 pH
Accuracy 0.1% of reading
Step Response Time 90% in 30 seconds
Operational Environment
PEEK Sensor Head Temperature Range: -5 °C to 95 °C
Maximum Pressure: 100 psig @ 95 °C
Maximum Flow Rate: 10 ft/second
CPVC Sensor Head Temperature Range: -5 °C to 75 °C
Maximum Pressure: 85 psig @ 75 °C
Maximum Flow Rate: 10 ft/second
Power Requirements‡
Voltage Range 10 to 30 VDC
Maximum Power 200 mW
Typical Power 120 mW
Process Electrode “G”, “HF”, low temperature,
pure water, or high temperature glass
Ground Rod Titanium, 316 stainless steel or
Hastelloy C
O-rings Viton® (other materials available)
Sensor Head Material PEEK or CPVC
DataStick Material 316 stainless steel, PEEK, or CPVC
Weight 1.2 lbs (PEEK or CPVC)
2.6 lbs (316 stainless steel)
Units of Measure
Measurement Units pH, mV
Temperature Units °C, °F
Automatic Buffer 1 and 2 point
Sample 1 and 2 point
Temperature 1 point
Temperature Compensation Options
Linear % per °C
Built-in Tables Ammonia or Morpholine
Other Configuration Options
Sensor Filter 0 to 100 seconds
Temperature Filter 0 to 100 seconds
Auto Calibration Buffer Standards (4, 7, 10) and DIN 19267
Approvals and Ratings
Immunity & Emissions CE Certified 89/336/EEC:
CISPER 11, EN61000 (-4-2,-4-3,-4-4,-4-6, 4-8)
Safety cULus Listed; 367G E303570
Hazardous Locations Haz Loc Class 1, Division 2,
Groups A, B, C, D. Max Ambient 50°C
† Note: Typical at 25 °C Performance unaffected by cable length
‡ Note: Class II DC power supply required
†† Note: pH and Temperature are precalibrated at the factory
‡‡ Note: Temperature can be entered manually


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