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.

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.
| Specifications | 
| 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
 | 
| Temperature 
 | 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 communication
 | 
| 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/