Moisture sensors for agricultural engineering, hydrology and irrigation The right moisture sensor for every application Moisture Sensor Experts

-► Founded in 1984 as an engineering firm, IMKO GmbH has been working on moisture measurement for over 30 years now. -► Based on the unique TRIME-TDR technology, IMKO experts developed sensors for science and meteorology in the early 90s. A few years later, the product range was extended with solutions for measuring moisture in grain, primarily for applications in the agricultural sector. -► Since the introduction of the SONO series in 2010, IMKO GmbH now offers a product portfolio that enables moisture measurement in any material, even for detection ofjust a few drops of water in solids, for...

IMKO – Application fields Bulk solids

The IMKO TRIME-TDR measurement method The sensors developed by IMKO are based on measurement with Time Domain Reflectometry, or TDR for short. In principle, this measurement method is suitable for a range of applications, such as cable break detection or even measurement of fill levels. When applied specifically for measuring moisture in bulk solids and liquids, the physical effect is used, which correlates the propagation speed of electromagnetic waves with the dielectric properties of the material to be measured. Since water has a significantly higher dielectric constant than the materials...

TDR measurement with the patented TRIME method Implementing a TDR measurement is usually associated with significant technical effort. Very accurate pulses must be generated and the measurement requires the utmost in precision. Therefore, for a long time, TDR technology remained a laboratory measurement method kept back for science. Measuring devices based on TDR were not only very expensive, but also large and unsuitable for field use. The TDR technology optimized by IMKO specifically for material moisture measurement, the TRIME method (Time Domain Reflectometry with Intelligent Micromodule...

The PICO probe as a "moisture tomograph" The diagram illustrates how the guided radar wave (in green) spreads with a velocity close to the speed of light. The sensor measures the material in a disk-like manner layer by layer similar to a computer tomograph. What may seem complicated at first glance has substantial advantages in practical use of the sensor. Due to this method the sensor has a large and robust measuring field, able to measure without measuring disturbances, even if the prevailing soil is very heterogenous and varies. The innovative sensor design is available in different adapted...

The determination of the electrical conductivity (EC) is very important for soils in agriculture. It correlates directly with the prevailing mineral concentration and can provide suppositions on the current fertilization status. Deviations from an optimal concentration of minerals have a negative impact on the crop yield. Our measurement technology enables a valuable contribution to an economically and ecologically sustainable management of farmland. Plants require main nutrients such as nitrogen, phosphorus, potassium, magnesium in larger quantities. But micronutrients or trace elements such...

PICO32 – The measurement solution for high quality in resolution and selective measurement tasks Very compact dimensions Small cylindrical measuring field for high-resolution and near-surface monitoring (approx. 750ml measuring field size with 110mm rod length) Variable rod lengths: 50mm, 80mm and 110mm (standard 110mm) available Also suitable for laboratory applications Multiparameter probe (humidity, temperature and electrical conductivity) Various interfaces available Little calibration requirements thanks to TDR technology Durable and robust design in IP68 PICO32 – For near surface Monitoring...

PICO32 for measurements into soil - as a mobile probe, usually used with our HD2 handheld device or our Bluetooth® interface PICO-BT PICO-BT Bluetooth Module to enable communication between PICO probes and any mobile Android device or smartphone. Incl. Battery, charger and software. The PICO-BT is an interface module and cannot save measurement data. Measurement field of the PICO32 (size 750cm³) Installation example close to the surface including cabling at the data station

PICO64 – The measurement solution for heterogeneous soils and various measurement tasks Very rugged design Large measuring field for reliable measurement data even under difficult conditions Variable rod lengths 100mm, 160mm and 200mm (standard 160mm) available Suitable for measurements in stony heterogeneous soils Multiparameter probe (humidity, temperature and electrical conductivity) Various interfaces available Little calibration requirements due to TDR technology Durable and robust design in IP68 PICO64 – Precise measurements with a large measuring field in challenging conditions As previously...

PICO64 for measurements in the topsoil - as a mobile probe, usually used with our HD2 handheld device or our Bluetooth® interface PICO-BT HD2 mobile handheld device to connect PICO probes for soil, sand and material moisture measurement. charger and rugged carrying case. Qualitative representation of the PICO64 measuring field distribution (size approx. 2500cm³) Example of the installation of PICO64 in an undisturbed subsoil

+■ Durable and rugged design +■ Easy to use +■ Very large measuring field for reliable measurements +■ Simple installation of the measuring tubes without heavy equipment +■ Profile measurement down to 3m depth +■ Multiparameter probe (humidity and electrical conductivity) +■ Little calibration requirements thanks to TDR technology PICO IPH2 - Exact findings on the water balance in the vadose zones with easy to install equipment A major unknown factor to establish a water balance model in a geography is the vadose zone, the unsaturated zone below soil surface and above the groundwater level. The...

Measuring with the PICO IPH2 using a pre-installed special polycarbonate tube Auger equipment for precise and gap-free installation of the installation tube down to 1m depth Qualitative display of the PICO IPH2 measuring field (size approx. 2500cm³) Example of the utilization of an IPH2 in the undisturbed subsoil the special polycarbonate tube is displayed in the center