Temperature integrated with soil moisture
The 5TM delivers temperature, measured by an onboard thermistor, along with accurate volumetric water content.
Engineered for accuracy
The 5TM determines volumetric water content (VWC) by measuring the dielectric constant of the soil (or other media) using capacitance/frequency domain technology. The sensor uses a 70 MHz frequency, which minimizes salinity and textural effects, making the 5TM accurate in most soils and soilless media. Factory calibrations are included for mineral soils, potting soils, rockwool, and perlite.
The 5TM’s small size makes it easy to install in the field and the greenhouse. This robust sensor can be pushed directly into undisturbed soil to ensure good accuracy.
Plug and read
Get straight to the data with the new ZL6 data logger. Just install the 5TM, plug it into the ZL6, set the clock and measurement intervals, and start logging data. No programming required.
The 5TM comes standard with both serial and SDI-12 communication options, meaning easy integration with systems manufactured by other companies.
Advantages of the 5TM
- Measures VWC and temperature
- SDI-12 compatible
- Volume of influence: see comparison article
- Measures VWC and soil temperature
- SDI-12 compatible
- Easy installation
- Plug and play with METER data loggers
- Use with the ZL6 data logger to collect data remotely
- 70 MHz frequency minimizes salinity and textural effects
- Factory calibrations are included for mineral soils, potting soils, rockwool, and perlite
|Volumetric water content (VWC)|
Range: –40 to +60 °C
DDI serial or SDI-12 communication protocol
|Data logger compatibility|
METER data loggers (ZL6, EM50/60 series) or any data acquisition systems capable of 3.6- to 15.0-VDC power and serial or SDI-12 communication
Length: 10.9 cm (4.3 in)
5.0 cm (1.9 in)
|Operating temperature range|
Minimum: –40 °C
5 m (standard)
3.5-mm stereo plug connector or stripped and tinned wires
|ELECTRICAL AND TIMING CHARACTERISTICS|
|Supply voltage (VCC to GND)|
Minimum: 3.6 VDC
|Power line slew rate|
Minimum: 1.0 V/ms
|Current drain (during measurement)|
Minimum: 0.5 mA
|Current drain (while asleep)|
Typical: 0.03 mA
|Power-up time (DDI serial)|
Maximum: 100 ms
|Power-Up Time (SDI-12)|
Minimum: 100 ms
Typical: 150 ms
Manufactured under ISO 9001:2015
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
Have a question or problem? Our support team can 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.
Phone Europe: +49 89 12 66 52 0