Product details

Cobra4 Sensor-Unit pH, BNC connector

Cobra4 Sensor-Unit pH, BNC connector

Item no.: 12631-00

  • Description
  • Related Experiments
  • Accessories
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Function and Applications

The Cobra4 Sensor-Unit pH, BNC connection is a measuring recorder for pH measurements, which is controlled by micro-controller.


  • It can be fitted with a pH probe, in order to measure pH values.
  • Values of the calibration are saved in the sensor - no need for new calibration after changing the basic unit.
  • The sensor is not restricted to the measurement of pH values: Connect the redox electrode 46267-10 to measure redox potentials.
  • The unit can be connected to the Cobra4 Wireless-Link, the Cobra4 Mobile-Link, the Cobra4 Junior-Link or the Cobra4 USB-Link using a secure and reliable plug-in / lockable connection.

Equipment and technical data


  • Measuring range: 0...14 pH
  • Resolution: 0.01 K
  • Measuring accuracy: ± 0.5 %


  • Measuring range -2000..+2000 mV
  • Resolution: 0.1 mV
  • Measuring accuracy: ± 0.5%


  • Data flow rate: 5 Hz
  • Dimensions: approx. 62 mm x 63 mm
  • Weight: 70 g


For the measurement of the pH-value the following accessories are needed:

pH electrode, plastic, gel-filled, 46265-15
or pH electrode, plastic, refillable, 46266-10
or pH electrode, plastic, refillable, 46266-15
or pH electrode, glass, refillable, 46268-10


Platinum redox electrode, plastic, gel-filled, 46267-10

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