Air/Water/Soil Temperature (20' cable) Sensor

Part # TMC20-HD


Measure temperature in air, water, or soil with the 6.1m (20 ft)  TMC20-HD temperature sensor. This product is designed to be used with HOBO U-Series, UX120-006M external-channel data loggers or ZW series wireless datanodes. This sensor records temperatures between -40° and 50°C (-40° to 122°F) in water or soil, and between -40° and 100°C (-40° to 212°F) in air. This product provides a response time of minutes typical to 90% in air moving 1 m/sec (2.2 mph); and 1 minute typical to 90% response time in stirred water. Please note, accuracy and resolution depend on data logger.

Highlighted Features

  • Plug directly into the external input jacks of U12, UX120, or ZW Family loggers to expand the range of measurement options and applications

In what environment does this sensor operate?

This sensor operates in indoor, outdoor and underwater environments.

What measurements does this sensor support?

The TMC20-HD sensor supports the following measurements: Temperature and Water Temp

To see the full specifications for this product, please see our product manual found under the documentation tab if available.





Measurement Range: -40° to 50°C (-40° to 122°F) in water; -40° to 100°C (-40° to 212°F) in air
w/U12: ±0.25°C from 0° to 50°C (±0.45°F from 32° to 122°F), insert probe 2.3 cm (0.9 inches) minimum; 
w/ZW: ±0.21°C from 0° to 50°C (±0.38°F from 32° to 122°F), insert probe 2.3 cm (0.9 inches) minimum;
w/UX120-006M: ±0.15°C from 0° to 70°C (±0.27°F from 32° to 158°F), insert probe 2.3 cm (0.9 inches) minimum;
w/U12: 0.03° at 20°C (0.05° at 68°F);
w/ZW: 0.02°C at 25°C (0.04°F at 77°F);
w/UX120-006M: 0.002° at 25°C (0.003° at 77°F);
Drift: <0.1°C (<0.2°F) per year
Response time in air: 2 min. typical to 90% in air moving 1 m/sec (2.2 mph)
Response time in stirred water: 30 sec. typical to 90%.
Operating range: Sensor tip and cable immersion in fresh water up to +50°C (122°F) for 1 year
Housing: Copper-plated sensor tip
Dimensions: 5.1 x 33 mm (0.2 x 1.3 inches)
Weight: 34 g (1.1 oz)

Additional Compatible Products
USB Data Loggers - optional external sensors
Temperature/Relative Humidity/Light/External
Temperature/Relative Humidity/2 External Channel
USB Data Loggers - requires external sensor
4-Channel External
4-Channel External
4-Channel Analog
Wireless Data Nodes - via receiver/USB
Four-Channel Data Node
Temperature/Relative Humidity/2 External Channels Data Node
Four Analog Port Data Node
Four External Channel Data Node
Documentation for the TMC20-HD

Water/Soil Temperature Sensor (TMCx-HD) Spec Sheet

The following are associated resources for this product. In general users of this product can gain insight into its possible use by utilizing the resources below.

On-demand Webinars & Videos