Product details

  • Cobra4 Sensor-Unit Chemistry
  • Cobra4 Sensor-Unit Chemistry
Cobra4 Sensor-Unit Chemistry Cobra4 Sensor-Unit Chemistry

Cobra4 Sensor-Unit Chemistry

Item no.: 12630-00

  • Description
  • Related Experiments
  • Accessories
  • Downloads and Documents

Function and Applications

The Cobra4 Sensor-Unit pH and 2 x temperature NiCr-Ni is a measuring recorder for pH, potential and temperature measurements, which is controlled by micro-controller.


  • It can be fitted with two NiCr-Ni thermoelements (Type K) and a pH probe or redox measuring chain
    • Measure up to two temperatures and one pH or potential value simultaneously.
    • Discover new experimental possibilities especially in thermodynamics
  • Values of the calibration are saved in the sensor - no need for new calibration.
  • 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 or the Cobra4 USB-Link using a secure and reliable plug-in/lockable connection.

Equipment and technical data


  • Measuring range: -200..+1200 °C
  • Resolution: 0.1 K
  • Measuring accuracy: equal to the accuracy of the gauges used


  • Measuring range: 0...14
  • Resolution 0.01K
  • 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: 95 g


For the measurement of temperature, pH-value and potential the following accessories are needed:


Thermocouple NiCr-Ni -40...+500°C single type, 13615-02
or Thermocouple NiCr-Ni -50...+1100°C microsheath, 13615-01
or Immersion probe NiCr-Ni -50...+1000°C stainless steel, 13615-03
or Immersion probe NiCr-Ni -50...+300°C Teflon, 13615-05
or Surface probe NiCr-Ni up to +1000°C stainless steel, 13615-04


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

Follow us on
Facebook YouTube
PHYWE - excellence in science
  • 0