TEROS 54 Soil Moisture Profile Sensor

Simplicity without sacrifice

You need accurate soil moisture measurements from easily installed sensors without extensive excavation. Most profile probes require you to choose between ease of installation and removal, sensor accuracy, measurement volume, and durability. At METER, we weren't willing to create a soil moisture profile probe unless it could meet all of these requirements. That's why we made the TEROS 54.

There's the hard way, and then there's the right way

We designed the TEROS 54 profile probe to make every step of your
measurement process easier-without sacrificing accuracy or durability.
Soil water content and temperature sensors are positioned at 15, 30, 45,
and 60 cm depths, providing root zone measurements without requiring
soil pits or cumbersome sensor retrieval at lower depths. You get the
convenience of profile measurements combined with the research-grade
accuracy you've come to expect from METER.

TEROS 54 Long

Sim Get in. Get out. Get data.

Avoid the cost, hassle, and time of large drilling equipment and pilot
tubes. TEROS 54 installation only requires a simple 2 cm borehole for
the robust quad-fin profile sensor to then be hammered into the soil.
This creates better sensor/soil contact for more accurate readings.
Removing the TEROS 54 is made simple with the dedicated extraction tool,
making this sensor ideal for annual crops that require sensors to be
installed and removed multiple times throughout the year.

Do more with less

Using multiple individual sensors in a large sensor network *can
create a cord management nightmare, requiring an overabundance of
wires and using up all the ports on your data logger. The TEROS 54
alleviates this problem, connecting all the sensors to the ZL6 data
logger via one wire while maintaining your ability to monitor
individual sensors in ZENTRA Cloud. Best of all, the TEROS 54 is
plug and play-no programming or wiring necessary.

See the bigger picture

Other cylindrical profile probes have a minimal measurement volume, only
allowing you to see what is happening in a small volume of soil. The
quad-fin design of the TEROS 54 creates a large measurement volume than
the typical soil moisture profile probe, providing a more holistic view
of soil moisture status. More sensors per data logger combined with more
soil measured with each probe means you can build a larger data pool
with fewer resources. And with ZENTRA Cloud, you can see all your data
remotely in real time from the comfort of your own desk

Confidence is king

Since 2001 METER has been dedicated to producing highly accurate,
easy-to-use soil moisture sensors, but we haven't offered a profile
probe-until now. We made the bold decision that our profile probe had to
compare to the quality and accuracy standards that environmental
researchers have come to rely on from METER. With the TEROS 54, you can
measure confidently, knowing your sensors are designed and constructed
by scientists who understand the challenges you face and the importance
of getting it right.

Range (VWC)
Mineral Soil Calibration: 0.00-0.70 m3 /m3

NOTE: The VWC range is dependent on the media the sensor is calibrated to. A custom calibration will accommodate the necessary ranges for most substrates.

Apparent Dielectric Permittivity (Ea): 1-50 (soil range)
1 (air) to 80 (water)
Resolution (VWC)
0.001 m3 /m3
Accuracy Generic Calibration: ±0.05 m3/m3 typical in mineral soils that have solution EC < 8 dS/m
Medium Specific Calibration: ±0.02-0.03 m3/m3 in any porous medium
Apparent Dielectric Permittivity (Ea): 1-40 (soil range), ±1
40-80, 15% of measurement
Range: -20 to +60 °C
Resolution: 0.03 °C
Accuracy: ±0.35 °C from -20°C to 0 °C
±0.25 °C from 0°C to 60 °C
Dimensions Diameter: (Shaft) 6.0 cm (2.36 in)
Length: 75.0 cm (29.53 in)
Width: (Head) 11.0 cm (4.33 in)
Operating Temperature Minimum: -20 °C
Maximum: +60 °C
Cable Length Standard:5.0m
Custom lengths available with a 75.0m maximum
Connector Types Stereo plug connector (standard) or stripped and tinned wires 4-Pin M12 connector or stripped and tinned wires
Compliance EM ISO/IEC 17050:2010 (CE Mark)
Cable Connector Types 3.5mm stereo jack plug or stripped and tinned lead wires (3)
Data Logger Compatibility (not exclusive) METER ZL6 and EM60 data loggers or any data acquisition system capable of 4.0- to 24.0-VDC power and serial interface with SDI-12; and/or RS-485 interface, Modbus RTU, or tensioLINK
Warranty One year, parts and labour

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Non UK/Ireland Customers

Non UK/Ireland Customers, please contact METER Environment at:www.metergroup.com/environment/

TEROS 54 Top


  • Multi-depth soil moisture profile probe measures water content and temperature
  • Installs via a small borehole without the need of a pilot tube
  • Hammers directly into the soil for direct soil contact
  • All sensors can be removed at once with dedicated removal tool
  • Easy plug-and-play operation
  • See all your data remotely in real-time
  • Ideal for annual crops and soil that requires sensors to be installed and removed seasonally
  • Get more measurements per logger port
  • Larger measurement volume
  • Reduced labor during installation and removal
  • Accurate research-grade soil moisture measurements
  • Sensors provide profile measurements throughout and around most root zones
  • Robust design means durability during installation and through operation in harsh conditions

TEROS 54 Quick-start
Size: 350.8 KB (359,183 bytes)

TEROS 54 Manual
Size: 1.6 MB (1,645,634 bytes)

TROS 54 Integrators Guide
Size: 604.6 KB (619,111 bytes)

Quotation Request

Email us to request a quotation for the TEROS 54 Soil Moisture Profile Sensor