HFP01SC

Self-Calibrating Heat Flux Sensor

HFP01SC self-calibrating heat flux sensor™ is a heat flux sensor for use in the soil. It offers the best available accuracy and quality assurance of the measurement. The on-line self-test verifies the stable performance and good thermal contact of sensors that are buried and cannot be visually inspected and taken to the laboratory for recalibration. The self-test also includes self-calibration which compensates for measurement errors caused by the thermal conductivity of the surrounding soil (which varies with soil moisture content), for sensor non-stability and for temperature dependence.

Low thermal resistance
Large guard area (required by the ISO 9869 standard)
Low electrical resistance (low pickup of electrical noise)
High sensitivity (good signal to noise ratio in low-flux environments)
Robustness, including a strong cable (essential for permanently installed sensors)
IP protection class: IP67 (essential for outdoor application)
Incorporated film heater for self-testing

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TP01

Thermal Properties Sensor

TP01 is the leading sensor for long-term monitoring of soil thermal conductivity. A measurement with TP01 may also be used to estimate soil thermal diffusivity and volumic heat capacity, leading to a better understanding of dynamic (variable heat flux) thermal behaviour of soils. TP01 is designed for long-term use at one measurement location. Applied in meteorological surface flux measurement systems, TP01 improves the estimates of heat transport in the soil and of the so-called storage term.

Leading sensor for long-term monitoring of soil thermal conductivity
Long-term use at one measurement location
Record breaking sensitivity

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TP08

Small Size Non-Steady-State Probe for Thermal Conductivity Measurement

TP08 is a probe that offers the possibility to perform a practical and fast measurement of the thermal conductivity (or thermal resistivity) of the medium in which it is inserted at a high accuracy level. It works in compliance with the ASTM D5334-14, D5930-97 and IEEE 442-1981 standards. The TP08 is a small version of type TP02, made for situations where the length of the TP02 poses a problem. The standard TP08 probe has proven its suitability for soils, thermal backfill materials, sediments, foodstuff, powders, sludges, paints, glues and various other materials.

The standard TP08 probe has proven its suitability for soils, thermal backfill materials, sediments, foodstuff, powders, sludges, paints, glues and various other materials.
Practical and fast measurement of the thermal conductivity (or thermal resistivity) of the medium in which it is inserted at a high accuracy level

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TPSYS20 System

High-accuracy thermal conductivity measuring system

TPSYS20 is a user friendly system for the measurement of thermal conductivity using TP02 or TP08 thermal needle probes. The system is designed for high-accuracy measurements. It is particularly suitable for analysis of soils, thermal backfill materials, sediments, foodstuff, sludges, paints, glues and highly viscous fluids. The TPSYS20 thermal needle probe system is particularly suitable for thermal conductivity measurements in a laboratory environment.

Connection via Ethernet or USB
Intuitive and easy-to-use graphical user interface
High-accuracy thermal conductivity measurements
Adjustable constant current source
Measurement and analysis of heating and cooling phase

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