New from Delta-T Devices is the SM150T - a research-grade soil moisture and temperature sensor. Its advanced patented electronics and high specification construction produce a dependable sensor with exceptional salinity and temperature stability.
The SM150T is engineered to withstand long term burial – the sensor, connectors and cable are all environmentally protected to IP68 - and it comes with a 5 year warranty. It provides moisture accuracy of ± 3% (after soil specific calibration) and temperature accuracy of ± 0.5°C.
The SM150T is a dual purpose sensor - it can be used portably with a readout meter for instant moisture readings, or left installed in the soil connected to a logger - to provide moisture and temperature data. When installed it can be logged by any Delta-T Devices data logger and by many loggers from other manufacturers (it has a simple 0-1 V output). For portable applications the SM150T is available in SM150 Kit form, complete with readout meter and carry case.
SM150T is easy to insert and install - its sharp pins minimise soil disturbance, preserving the original soil structure around the measurement rods. For burial at depth the cylindrical shape facilitates installation in augered holes. Optional extension tubes assist with placement and removal (50 cm and 100 cm lengths, connectable).
The sensor is ideal for many applications in science and horticulture. With an overall length of only 143 mm (rods 51 mm), the SM150T can be easily installed in grow-bags and plant pots. For portable applications the SM150T is available in SM150 Kit form, complete with readout meter and carry case. The kit is simple to use and rugged, making it easy to check the uniformity of growing conditions in substrates. The kit includes substrate calibrations for perlite, coir, peat, and mineral wool, as well as generalised soils.