Imko TRIME-PICO IPH/T3 Soil Moisture Sensor

Applications and benefits of TRIME-PICO IPH/T3

Capturing of moisture profiles into 3m depth

Cable lengths of up to 25m available

Big measuring volume: >3000ml

Ideal for soils with high conductivities

Robust and proven in use

Profile measurements are possible in increments of 18 cm

The ideal alternative for radioactive neutron probes and for capacitive tube probes

Measuring range of 0…60 vol.% moisture

Perfect for controlling several measuring points with only one measuring system

Consists of a cylindric PVC body with four-part sprin-loaded plates

Measurements in plastic tubes made of stable and shock-resistant TECANAT plastics

Tubes are sunk before measurement and stay there while measuring

Optimal for mobile usage with PICO-BT because of mechanical robustness

Via analog output (0..1V or 4..20mA) the device can be connected to every common data logger werden

The TRIME drilling procedure ensures the installation with best contact of tube and surrounding medium

Operating principle

A high frequency 1GHz TDR impulse is created, runs along the metalic half shells und establishes an electromagnetic field around the conductors and with that the TRIME tube probe. At the end of the conductors the impulse is reflected completely and goes back to the source. The time of the impulse (10ps…2ns) is directly connected to the volumetric water content of the measured medium via the dielectric constant. Already after two to three seconds the measured moisture value is shown.

The effective penetration depth of the measuring field comprises around 15cm. The measuring field is most sensitive directly at the surface of the tube, the sensitivity decreases exponentially with a growing distance.