Bare Fiber Temperature Minisensor


  • Optical fiber 430µm in diameter
  • Fast response time (<<1s)
  • Measurement range 0°C - 50°C
  • For true temperature compensation of OXB430-SUB
  • With underwater SUB-connector (-SUB)

The fiber-optic temperature sensors rely on thermal quenching of photoluminescence and are optimized for the innovative REDFLASH technology from PyroScience. The optical temperature sensors are characterized by extreme photo-stability, small size of the sensor tip (minisensors), ultra-fast response times (<0.1 s in water), and do not show interferences with gases (such as oxygen) and ionic species.

This fiber-optic minisensor consist of an optical fiber with a sensor tip diameter of 430 µm. Compared to a microsensor, this sensor is suited for slightly larger samples, long-term measurements and profiling applications with less spatial resolution requirements.

Temperature range. This sensor is specified for the range of 0 to 50°C. Measurements at higher temperatures are possible, but the sensor specifications are not valid for temperatures out of this range.

Bare fiber. The bare fiber oxygen sensors are principally identical to our Retractable Needle-Type oxygen sensors, but they come without any sensor housing.

Ultra-high speed. Our fiber-optic temperature sensors offer a very fast response time (t90) of < 0.1s in water.

Optical isolation. For applications at high ambient light (e.g. direct sunlight, illuminated samples) and in fluorescing / light-sensitive samples, an additional optical isolation (-OI) protection layer is added to the sensor surface to reduce enhanced sensor aging and to avoid interference with the oxygen measurements

SUB-connector (-SUB). Underwater sensor connector (instead of standard ST-connector) needed for applications with underwater devices.

Good value. This product is a basic sensor for applications with no special requirements (like ultra fast response times, resistance to solvents, low detection limit)

Star sensor. This sensor is one of the world's best or only solutions in a certain application area, featuring for example a very fast response time, solvent resistance or a unique sensor format.

Applications. To get an overview of potential applications and to see our sensors in action, please visit our Applications site!

Price List

Every PyroScience oxygen meter with a SUB-connector (underwater devices) and optical temperature support is compatible to this sensor. Use this link to get a list of all compatible meters. Select additional requirements to find the optimal meter for you and your application!


AquapHOx-LX Logger + TPB430-SUB

Choose the one channel underwater meter AquapHOx-LX with the bare fiber temperature minisensor TPB430-SUB with underwater connector.

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