TRSYS20 thermal resistance measuring system

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.

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).

HFP01 heat flux sensor and thermocouples mounted on a wall.

High-accuracy in-situ building R-value measurements

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.

Specifications

Measurand

heat flux (2 x)
temperature (4 x)
temperature difference (2 x)

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Specifications

Measurand

heat flux (2 x)
temperature (4 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

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

Downloads

TRSYS20 thermal resistance measuring system brochure

TRSYS20 thermal resistance measuring system user manual

How to install a heat flux sensor

Window thermal insulation testing

Description

Building thermal resistance measuring system

The high-sensitivity HFP01 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.

TRSYS20 graphical user interface, accessible through a web browser.

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.

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 in the MCU and can be downloaded through the graphical user interface. The user is responsible for the data analysis, calculating the R-, Λ- or U-value of the building envelope according to the ISO 9869 or ASTM C1155 standards.

Measure thermal resistance building wall

Unique features and benefits

robust and stable
best paperwork: complies with ISO and ASTM standards
temperature difference sensors: tested for 0.1 °C accuracy requirements
simultaneous measurements on two locations
measures very small heat fluxes
intuitive and easy to use graphical user interface
connection via ethernet (LAN) or USB
water- (rated IP67) and corrosion proof sensors

Heat flux and differential temperature measurement for building R-value, Λ-value or U-value determination.

Calibration & conformity assessment

Calibration of TRSYS20 components is traceable to international standards. TRSYS20 is provided with formally traceable calibration certificates. HFP01 heat flux sensors are calibrated in accordance with ASTM C1130. Temperature difference sensors are “individually” tested as matched pairs.