Very accurate
High frequency precision measurement technique with outstanding resolution
The SMT100 PRO is a 30 mm shorter version of the SMT100. This makes it particularly suitable for use in confined spaces, such as in column experiments for hydrology and civil engineering.
For compatibility with data loggers and controllers the SMT100 is available with the following interfaces:
RS-485: TBUS/ASCII or Modbus
SDI-12
High frequency precision measurement technique with outstanding resolution
Proven long term experience in harsh environments
Fully waterproof design with high quality materials
Soil volumetric water content (VWC):
Using factory calibration up to ± 3% (VWC) in mineral soils
with moderate salinity from 0 to 50% VWC
Using medium specific calibration up to ± 1% (VWC)
Temperature:
Typical ± 0.2°C, max. ± 0.4°C over full range
Additional output
Raw measurement data
Dielectric permittivity
Resolution
0.1% volumetric water content or better
0.01°C or better
Range
0 to 60% volumetric water content
(up to 100% volumetric water content with limited accuracy)
Temperature: -40 to +80°C
Output options
RS-485 with TBUS
RS-485 with Modbus
RS-485 with ASCII
SDI-12
Power
4-24 V DC, up to 40 mA during measurement
Measurement time: less than 50 ms
Cable length
10m
Sensor dimensions
15.2 cm x 3 cm x 1.2 cm
Data logger compatibility
Logger capable of appropriate power excitation and RS-485 (TBUS, Modbus, ASCII) or SDI-12
Free PC logger software available on request