Based on over 40 years’ experience in the design and manufacture of field instrumentation, the SM150T from DeltaT Devices makes the ideal soil moisture sensor for system integration.
Patented sensor electronics produce research grade measurement accuracy with exceptional salinity and temperature stability essential for critical control and irrigation decisions.
Industrial rated, UV resistant cable fitted with a waterproof IP68 connector allows the sensor to be buried indefinitely, whilst still permitting easy cable exchange or extension if necessary.
Applications: Soil calibrations are provided for general soils and substrates, or a specific soil calibration can be determined if necessary. The sensor can be installed at depth in augered holes, or buried in substrate containers
|
Accuracy
|
± 0.03 m3.m3 (3%) volumetric water content (VWC)
± 0.5°C (0 to 40°C for temp sensor)
|
|
Soil moisture measurement range
|
0 to 1.0 m3.m3 (100%)
but less accurate above 70% VWC
|
|
Salinity range
|
50 to 1000 mS.m1
± 5% vol over 100 to 1000 mS.m1 and 060% VWC
|
|
Temperature range
|
Full accuracy over: 0 to 60°C
|
|
Output
|
0 to 1.0 V differential
Corresponding to 0 to ~0.6 m3.m3
|
|
Power requirement
|
514 V, ~18 mA for 1s
Minimum 5 V with 100 m cable
|
|
Environmental
|
IP68 with DeltaT supplied cables
|
|
Sample volume
|
~55x70 mm diameter
Sample volume is weighted towards soil immediately surrounding the rods
|
|
Dimensions and weight
|
Overall: 143 x 40 mm diameter Rods: 51 mm x 2.5 mm diameter Weight: 0.1 kg (exc. cable)
|
|
Sensor calibrations
|
Individual sensors are interchangeable
Recalibration advised every 3 years (depending on use)
|
|
Soil calibrations
|
Generalised Mineral and Organic soil calibrations are supplied
|
