The Celsius temperature sensor is a fast-response, high-accuracy temperature sensor that is protected by an aluminum cage, and sealed from the water when installed on a watertight enclosure. Use it to make depth/temperature profiles, surface temperature profiles, and take accurate measurements in any fluid.
The sensor uses the TMP119, which is typically accurate to ±0.03°C and communicates over I2C. It comes standard with a JST GH connector.
The TMP119 sensor itself has a fast time response and we designed the whole package to maintain that speed to allow accurate temperature profile measurements even while descending/ascending quickly. The Celsius sensor has a response time constant of < 0.8 seconds (0.5 seconds typical). An anodized aluminum cage around the sensor protects it from damage. Based around our M10 WetLink Penetrator, it is compatible with all of our watertight enclosures and is rated to 6000 meters(!).
The electrical schematic is open-source and available in the Technical Details tab. Feel free to adapt for your own needs.








