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TRSYS20 Thermal resistance Measuring System
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.
Measurand | heat flux (2 x) temperature (4 x) temperature difference (2 x) temperature difference (2 x) |
TRSYS20 specifications | : |
Uncertainty of calibration | ±3 % (k = 2) |
Measurement resolution | 0.02 W/m² |
Guard width to thickness ratio | 5 m/m (as required by ISO 9869 D.3.1) |
Accuracy | < ± 0.1 °C (as required by ISO 9869, paragraph 5.2) |
Measurement resolution | 0.02 °C |
Thermocouple type | IEC 60584-3:2007 type KX |
Tolerance class | Class II |
Required data analysis to determine building R-value and U-value | to be performed by the user according to ISO and ASTM standard practices |
Standards governing use | ISO 9869, ASTM C1046, ASTM C1155 |
Number of measurement locations | 2 |
Cable length per location | location 1: 10 m, location 2: 20 m |
Rated operating temperature range HFP01 and TC | 30 to +70 °C |
Measurement duration range | > 3 days |
Data storage capacity | > 30 days |
MCU specifications | : |
Connection | to local area network (LAN) via ethernet or directly to PC via USB |
Graphical user interface | web page via web browser |
Supported web browsers | Chrome, Firefox, Internet Explorer, Opera, Safari |
Rated operating voltage MCU | 10 to 16 VDC |
Ingress protection class | IP54 |
PSU specifications | : |
Input voltage | 110-220 VAC, 50 / 60 Hz |
Ingress protection class | IP22 |
User interface: MCU as 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 web page that can be accessed via a web browser. The graphical user interface allows the user to start and stop experiments; monitor heat flux, temperature, and temperature difference measurement data in real time; and review preliminary results.
The system generates a data file containing the measurement time, heat flux, temperature, and temperature difference for the two measurement locations. The data file is stored on the MCU and can be downloaded via the graphical user interface. The user is responsible for data analysis, calculating the R, Λ, or U value of the building envelope according to ISO 9869 or ASTM C1155 standards.
Unique Features and Benefits
Robust and stable
Best documentation – meets ISO and ASTM standards
Temperature difference sensors – tested to 0.1°C accuracy requirements
Simultaneous measurements at two locations
Measures very small heat fluxes
Intuitive and easy-to-use graphical user interface
Connection via Ethernet (LAN) or USB
Waterproof (IP67 rated) and corrosion resistant sensors
Calibration and conformity assessment
Calibration of TRSYS20 components is traceable to international standards. TRSYS20 is delivered with formally traceable calibration certificates. HFP01 heat flux sensors are calibrated according to ASTM C1130. Temperature difference sensors are tested “individually” as matched pairs.
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