Thermal Sensors Building thermal resistance measuring system with two measurement locations TRSYS20 is a high-accuracy measuring system used in determining the in-situ thermal resistance (R-value), thermal conductance (Λ-value), and thermal transmittance (U-value) of building envelope components. The system is mostly used for measurements according to standard practices of ISO 9869, ASTM C1046 and ASTM C1155. TRSYS20 is equipped with high-resolution electronics, two heat flux sensors of model HFP01 as well as two pairs of matched thermocouples for differential temperature measurements. The high-sensitivity heat flux sensors combined with the robust, high-resolution electronics ensure that TRSYS20 continues making meaningful measurements when other systems no longer perform; in particular at very low heat fluxes and low temperature differences across the wall. The matched thermocouple pairs allow measurement of temperature differences with an uncertainty better than 0.1 °C over the entire temperature range. Two measurement locations provide redundancy allowing the user to verify that the measurement results are representative for the building envelope component. Figure 1 TRSYS20: the measuring system consists of 2 HFP01 heat flux sensors and 2 matched thermocouple pairs (in total 4 temperature sensors) connected to the measurement and control unit (MCU). In-situ measurements of thermal resistance or R-value are often applied in studies of buildings. Other possibilities are to measure its inverse value, the thermal conductance which is called the Λ-value, or to measure the thermal transmittance or U-value which includes ambient air boundary layer thermal resistance. The measurements of R, are based on simultaneous time averaged measurement of heat flux Φ in W/m2 through the wall and differential temperature ΔT in K across the wall: R = ΔT/Φ The ISO 9869, ASTM C0146 and ASTM C1115 standards give detailed directions concerning the measurement method, sensor installation and data analysis. TRSYS20 is a system for measuring the heat flux and differential temperature used in determining the thermal resistance of building envelope components. Figure 2 HFP01 heat flux sensor and thermocouples mounted on a wall. TRSYS20 consists of two HFP01 heat flux sensors, two matched thermocouple pairs, a measurement and control unit (MCU), a power supply unit (PSU) and a carrying case. The highsensitivity heat flux sensors in combination with the MCU’s high-resolution electronics ensure that TRSYS20 continues to make meaningful measurements down to very low heat fluxes. The matched thermocouple pairs in TRSYS20 measure temperature differences across the wall with an uncertainty of better than 0.1 °C over the entire rated operating temperature range as required by ISO 9869 (paragraph 5.2). Copyright by Hukseflux. Version 2301. We reserve the right to change specifications without prior notice Page 1/4. For Hukseflux Thermal Sensors go to www.hukseflux.com or e-mail us: info@huksef

Thermal Sensors User interface: MCU as a web server TRSYS20 is controlled via a PC. No software installation is required. The measurement and control unit (MCU) can be connected to a local area network (LAN) via ethernet or directly to a PC via USB. The MCU provides a graphical user interface in the form of a webpage that is accessible through a web browser. The graphical user interface allows the user to start and stop experiments; to monitor real-time heat flux, temperature and temperature difference measurement data; and to review preliminary results. Typical measurements may last 1 to 2 weeks...

Thermal Sensors Robust and stable. Equipped with heavyduty components, TRSYS20 is a robust and stable system. Its sensors survive repeated installation necessary in this application where measuring systems are typically used at multiple locations over time. The sensors are water- (rated IP67) and corrosion proof. Ethernet or USB. TRSYS20 MCU can either be connected to a local area network (LAN) via its ethernet port or it can be connected directly to a PC or laptop via USB. Intuitive and easy to use graphical user interface. The MCU provides a user interface in the form of a webpage, accessible...

Thermal Sensors MARKET LEADER IN HEAT FLUX MEASUREMENT TRSYS20 outperforms other models and complies with ISO and ASTM standards: how? TRSYS20 is the world’s highest accuracy measuring system for building envelope component thermal resistance measurement. It is one of the few systems with true out-of-the-box compliance to ISO 9869. Purchasing a TRSYS20 is a good investment in accurate and stable measurement. TRSYS20 complies with the acceptance interval of the temperature difference measurement specified by ISO 9869 of ± 0.1 °C. Ethernet or USB connection Temperature difference sensors: tested...