Soil temperature profile probe


Accuracy made easy

Soil temperature is a critical parameter for understanding the whole energy balance. It’s often used in surface energy balance models and predictions. If you need a simple, accurate way to make soil temperature measurements in the soil profile and monitor those measurements remotely, the TEROS 06 is your go-to, all-in-one solution.

More accurate than other sensors

The research-grade TEROS 06 accurately measures and records soil temperature over time at six depths exceeding WMO recommendations. It contains digital sensors at -5 cm, -10 cm, -20 cm, -30 cm, -50 cm, -100 cm. And, unlike other profile probes on the market, every TEROS 06 sensor is individually calibrated for the highest possible accuracy (±0.1°C).

TEROS 06 has a small diameter of 20 mm to minimize soil disturbance, plus it was specifically engineered to eliminate heat transfer. The fiberglass-reinforced plastic body has a very low thermal conductivity, so there is no temperature carryover between profile layers. Stainless steel rings ensure excellent heat conductance from the soil to the sensor, so you know you’re only measuring soil temperature at a precise location.

Insanely simple setup

We designed the TEROS 06 to be incredibly easy to install. Just auger a hole with the specially-made auger, and insert the probe. Then, plug the sensor into your ZL6 logger and start collecting data. It’s that easy. The logger auto-recognizes the TEROS 06 for simplified setup and configuration. The TEROS 06 also works with non-METER loggers.

Reliable data on the go

Easy and reliable data collection, maintenance, analysis, and sharing are all part of the TEROS experience. Combine the TEROS 06 and ZL6 logger with ZENTRA Cloud, where all data are connected and delivered anywhere in the world in near-real time. All you have to do is sit back and let the data flow.

Get more for less

Backed by 20 years of precision engineering and painstaking attention to detail, the ultra-robust TEROS 06 is a high-quality, research-grade temperature profile probe that delivers the accurate soil temperature data you need for better models and predictions—with far less hassle.

Request a quote Contact us TEROS 06 Knowledge Base


  • Measures six depths exceeding WMO recommendations
  • Temp sensors at -5 cm, -10 cm, -20 cm, -30 cm, -50 cm, -100 cm
  • Temperature accuracy: ±0.1°C
  • Plug and play with ZL6 data logger
  • Visualize data instantly using ZENTRA Cloud




Range: -20 °C to +50 °C
Resolution: ± 0.03 °C
Accuracy: ± 0.1 °C (0 °C to 30 °C), ± 0.2 °C (-20 °C to 50 °C)

Measurement depths

5 cm, 10 cm, 20 cm, 30 cm, 50 cm, 100 cm



SDI-12 one-wire serial interface
-DDI communications protocol
-SDI-12 communications protocol

RS-485 two-wire serial interface (M12 connector only)
-tensioLINK serial communications protocol
-Modbus RTU communications protocol

Data logger compatibility

METER ZL6 data loggers and any data acquisition system capable of 3.8- to 28.0‑VDC power and serial interface with SDI-12 and/or RS-485 interface, Modbus RTU or tensioLINK communication



Length: 104.0 cm (40.94 in)
Diameter: 2.0 cm (0.79 in)

Operating temperature range

Minimum: –30 °C
Maximum: 60 °C


Shaft: PA66GF30
Sensor elements: Stainless steel

Cable length

4.5 m (standard)
75 m (maximum cable length using M12 connector and elongation cables)

Connector types

3.5-mm stereo plug connector
4-pin M12 plug connector

NOTE: If a stripped and tinned wire is needed, please contact Customer Support.


Supply voltage (VCC to GND)

Minimum: 3.9 VDC continuous
Maximum: 28.0 VDC continuous

Digital input voltage (logic high)

Minimum: 1.9 V
Typical: 3.6 V
Maximum: 5.0 V

Digital input voltage (logic low)

Minimum: -0.3 V
Typical: 0.0 V
Maximum: 1.0 V

Digital output voltage (logic high)

Typical: 3.6 V

Power line slew rate

Minimum: 1.0 V/ms

Current drain (during measurement)

Minimum: 2.0 mA
Typical: 2.5 mA
Maximum: 4.0 mA

Current drain (while asleep)

Typical: 80 µA

Power-up time (DDI serial ready)

Minimum: 210 ms
Maximum: 400 ms

Power-up time (SDI-12 Ready, DDI Disabled)

Minimum: 210 ms
Maximum: 400 ms

Power-up time (RS-485 Ready, DDI Disabled)

Minimum: 210 ms
Maximum: 400 ms

Measurement duration

Minimum: 30 ms
Maximum: 240 ms


Manufactured under ISO 9001:2015
EM ISO/IEC 17050:2010 (CE Mark)

California requires the following notice:

⚠️ WARNING: This product may contain chemicals including ethylene glycol, lead, nickel, styrene and cadmium, which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov

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Have a question? Our team is ready to help!

We manufacture, test, calibrate, and repair every instrument in house. Our scientists and technicians use the instruments every day in our product testing lab. No matter what your question is, we have someone who can help you answer it.

Email Europe: sales.europe@metergroup.com

Phone US: +1 509-332-5600
Phone Europe: +49 89 12 66 52 0

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