temperature microsensor

micro temperature measurements


The Unisense thermo-sensor comes in two versions: a robust sensor with a tip diameter of 2 mm and a delicate glass microsensor with a tip diameter of as little as 200 µm.

The standard Unisense thermo-sensor, TP2000, is a mineral insulated thermocoupler with a tip diameter of 2 mm. The thermo-sensor can be used for most applications where a temperature measurement is required for monitoring or temperature compensation purposes.

The Unisense glass thermo microsensor consists of a thermocoupler inside a tapered glass capillary. This sensor can be used to determine temperature micro gradients in different environments e.g. hot springs biofilms, compost piles, and sediments with steep temperature gradients due to volcanic activity.

The Unisense temperature microsensor has been used by the world’s leading scientists for decades and is cited in over hundreds of papers in journals such as Nature and Science.


  • Measurement tip size as small as 180 µm
  • Extremely fast T90 response times of less than 0.3 seconds
  • Suitable for a wide range of applications from biogeochemistry to biomedical


tip diameter sizes
  • TP-200: 180-220 µm
  • TP-500: 400-600 µm
  • TP-MR: 400-600 µm
  • TP-N: 1.1 x 50 mm
  • TP-NP: 1.6 x 40 mm – needle sensor for piercing
  • TP-2000: 2 mm



Gundersen,J.K. et al (1998), Predicting the signal of O2 microsensor from physical dimensions, temperature, salinity, and O2 concentration, Limnol Oceanography, 1932 – 1937, vol. 43

Gundersen,J.K. et al (1992), Mats of giant sulphur bacteria on deep-sea sediments due to fluctuating hydrothermal flow, Nature, 454 – 456, vol. 360

Al-Najjar,M.A.A. et al (2009), Conversion and conservation of light energy in a photosynthetic microbial mat ecosystem, The ISME Journal Online, 1 – 10, vol.

Bryant,L.D. et al (2010), Variable sediment oxygen uptake in response to dynamic forcing, Limnology and Oceanography, 950 – 964, vol. 55


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