Environmental measurement

The ML3 ThetaProbe measures volumetric soil moisture and temperature with ±1% accuracy. Can be buried or used as a portable probe, connects to data loggers via 0–1 V DC output, and operates in a wide temperature range. Made for long-term field use, with replaceable stainless steel rods and IP68 environmental protection

The PCE-THD 50 thermo hygrometer is used to measure ambient temperature and humidity in warehouses, production halls and greenhouses. Temperatures between -20 and 60°C (-4 to 140°F) are measured reliably and quickly. Dew point and wet bulb temperature are also calculated and displayed. Any type K thermocouple can be connected to the thermo

WET150 is a research-grade, multi-parameter digital soil sensor for accurate monitoring of growing conditions, measuring moisture, temperature and EC. Key features include: SDI-12 for easy integration; a rugged construction; low power consumption; buriable; detachable and extendable cable system. Supplied with a 5-year warranty

The advanced WS-GP2 Automatic Weather Station is based on the powerful GP2 Data Logger and Controller. It is an ideal solution for research and environmental monitoring applications: a powerful, rugged and highly flexible weather station; unattended weather recording at remote and exposed sites; wide choice of sensors, including soil moisture

The BF5 Sunshine Sensor measures Global and Diffuse Radiation and sunshine duration. The BF5 sunshine sensor is a multi-purpose solar radiation sensor. It uses an array of photodiodes with a unique computer-generated shading pattern to measure incident solar radiation. A microprocessor calculates the global and diffuse components of the radiation

PCE-VA 20-SET multifunction anemometer with flow hoods measures air flow velocity, volume flow, temperature, humidity, dew point and wet-bulb temperature. Designed for ventilation and air-conditioning system checks, it includes a 10cm impeller and two capture hoods for round and square duct outlets

The EQ3 - accuracte convenient water potential measurement. The EQ3 uses class leading ThetaProbe technology to avoid the many problems of water-filled tensiometers. It measures water potential in the range 0 to -1000 kPa and provides an accurate loggable output. It is well suited for use in dry soils. Convenient, accurate, reliable alternative to

The PR2 SDI-12 shares the many strengths of the analogue PR2 soil moisture probe, but with the addition of SDI-12 compatibility - allowing integration into new and existing SDI-12 systems. Multiple PR2 SDI-12s can be connected to a compatible data logger via a single cable; enables the creation of low-cost, highly flexible sensor networks

The PR2 Profile Probe provides easy and accurate soil moisture profiles. It enables users to monitor soil water profiles with ease and flexibility. Features: soil moisture content - not just trends; low salinity and temperature sensitivity; portable meter option for convenient multi-site measurement; GP2 and DL6 datalogger options for continuous monitoring

SPN1 Sunshine Pyranometer measures global (total) and diffuse solar irradiance in W.m-2, using an array of thermopile sensors and a ground glass dome. Designed for long-term outdoor use, it calculates direct normal irradiance and sunshine duration without moving parts, shade rings or tracking and operates reliably in harsh climates down to -20°C

The WET-2 Sensor measures three vital properties of substrates: water content, EC and temperature. Accurate measurement of pore water conductivity in-situ; ideal for precision horticulture and soil science applications; multi-parameter sensor. Readout and data storage are handled by the HH2 Moisture Meter, which also holds the selected generic

The SM150T measures soil moisture and temperature with research-grade accuracy. It offers stable, robust and reliable performance at an affordable price. Dependable ±3% soil moisture accuracy; built-in temperature measurement; robust and buriable; 5-year warranty

Delta-T Devices’s SPN1 Sunshine Pyranometer is being used on a one-year expedition to the Central Arctic. This major research project, titled MOSAiC (Multidisciplinary drifting Observatory for the Study of Arctic Climate) is closely analysing the Arctic (as the epicentre of global warming) in order to gain fundamental insights about the nature of

A WET Sensor has been used by Chinese astronauts aboard the Tiangong-2 Space Lab who were testing life support technologies. The WET Sensor played a key role in the Space Lab experiment, providing frequent accurate data on substrate moisture, temperature and pore water conductivity (EC

Delta-T Devices’ WET150 SDI-12 multi- parameter soil sensor is being used by Lualtek, an agricultural technology solutions provider in Italy, to maintain optimised growing conditions. To help growers looking to employ the latest technology to achieve optimal crop yield and quality, it offers a complete plug-and-play monitoring package

In order to precisely assess the varying moisture levels in Widdybank Fell, David needed a soil sensor that could measure equally well in both drier and very wet soils. After an extensive search he decided upon the WET150, a digital sensor whose moisture reading precision is notably enhanced by compensation for variations in the electrical conductivity of the soil, which it also measures

SM150T soil sensors and a GP2 advanced data logger from Delta-T Devices have been used by electronics engineer Valentin Juhasz in his PhD at Strathclyde University to measure moisture inside bricks and masonry to improve building conservation techniques. Valentin has worked in the building conservation sector for over a decade and his company

Rothamsted Research at West Common, Harpenden, is the longest-running agricultural research institute in the world, with a history dating back to the middle of the 19th century. Delta-T Devices has a long-standing connection to Rothamsted Research having supplied sensors and data loggers for many of its important scientific projects. Between 1843

Delta-T Devices' PR2 profile probe was used by Cranfield University to explore the effects of various tillage regimes on water movement through soil. Matt Pitt has a deep interest in modelling hydraulic data and is part-way through a fascinating PhD project centred on the ways in which various tillage regimes affect the long-term properties of

SM150T soil moisture and temperature sensors installed at an erosion escarpment in Iceland are helping a research team to better understand the role that localised soil moisture levels play in the erosion of escarpment features

Delta-T’s SPN1 Pyranometer is being used to monitor The China Three Gorges Corporation's new 100MW solar farm in Hebei Province, China, 2.30km southwest of Beijing. The solar farm is being built on more than 40 square kilometres of hilly, uncultivated land. The SPN1 is a

Two BF5 Sunshine Sensors from Delta-T Devices are helping research projects run by the University of Greenwich, photovoltaics company Polysolar, and Hugh Lowe Farms in Kent, to explore the potential for UK soft fruit farms to harness solar power while simultaneously producing high-quality crops. By retrofitting semi-transparent photovoltaic