On-site testing & monitoring services of optical & thermal performances
We are a Singapore-based third-party test laboratory, providing on-site testing & monitoring services related to optical & thermal performances. Our lab is SAC-SINGLAS (ISO 17025) accredited and our customers are from around 30 countries.
The materials have been installed and it is not piratical to bring them to a lab.
The performance is dependent on the weather and building environment and it is not practice to conduct the testing in a lab.
There are various scenarios that on-site testing & monitoring is desirable:
Test samples are too big
It is not practical to remove test samples from an existing building
Performances in real building and real weather condition are required
OTM has supported many on-site testing and monitoring projects:
On-site testing of color and gloss uniformity
On-site monitoring of glass performance
On-site monitoring of micro-environment in buildings
On-site testing of glass flatness (roller wave and edge lift)
We are resourceful in propose testing & monitoring plans, tailored to your specific project needs. We are neutral & independent and we provide high quality results for your decision-making.
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Expand one of the blocks below for more information.
Test methods
Standard on-site testing
On-site testing of facade color and gloss uniformity
AAMA 2605-13 Voluntary specification, performance requirements and test procedures for superior performing organic coatings on aluminum extrusions and panels
ASTM D2244-16 Standard practice for calculation of color tolerances and color differences from instrumentally measured color coordinates
ASTM D523-14 Standard test method for specular gloss
On-site testing of glass color uniformity
ASTM C1376-21a Standard specification for pyrolytic and vacuum deposition coatings on flat glass
On-site testing of wall or glass U-value
ISO 9869-1:2014 Thermal insulation – Building elements – In-situ measurement of thermal resistance and thermal transmittance – Part 1: Heat flow meter method
ASTM C1155-95 Standard practice for determining thermal resistance of building envelope components from the in-situ data
On-site testing of glass flatness (roller wave and edge lift)
ASTM C1651-11 Standard Test Method for Measurement of Roll Wave Optical Distortion in Heat-Treated Flat Glass
EN 1863-1:2011 Glass in building. Heat strengthened soda lime silicate glass. Definition and description
Non-standard on-site testing & monitoring
For non-standard services, we normally propose project-specific test method, based on the nature of the projects and customer’s needs. Please click the “Reference projects” tab above for some examples.
Special notes on on-site testing of glass visible light transmittance & shading coefficient
It is unfortunate that it is not practical to measure glass visible light transmittance and shading coefficient on-site. The main reason is that it is not possible to produce ideal AM1.5 solar radiation on-site.
We’ve conducted on-site monitoring of thermochromic glasses and it is possible to monitor the solar energy transmission and visible light transmission performances of glasses on-site. However, such results are not directly comparable to laboratory tested results, due to the different environmental conditions.
Reference projects
On-site color uniformity testing
We have 6 reference projects in this category, 5 on glass color uniformity and 1 on cladding material color uniformity.
We have 3 reference projects in this category, 1 on thermochromic glass performance monitoring, 1 on low-e glass performance monitoring and 1 on micro-climate monitoring.
Thermochromic glass monitoring
Low-e glass monitoring
Micro-climate monitoring
Instruments
Largest collection of optical & thermal instruments in Singapore
OTM maintains the largest collection of optical & thermal measurement instruments in Singapore.
The instruments were used in our past projects. As the distributor of a few reputable instrument manufacturers, we are able to get access to high precision instruments at more competitive prices. Additionally, we also have in-house capabilities to design and integrate measurement instruments.
Instruments of on-site micro-climate monitoring
A group of wireless data loggers to be deployed
Cost, lead time & procedures
Cost
The cost is project dependent. We will propose a fee based on the nature of the project (e.g. instruments needed, project duration, manpower required in result analysis and reporting).
Please contact us for discussions on your project.
Lead time
If we have existing instruments, we will be able to start the project in 1 – 2 weeks or earlier; if we need to order additional instruments, we will be able to start the project in 4 – 5 weeks after your confirmation.
For monitoring projects, we will need additional 2 weeks for result analysis and reporting.
Procedures
Below are the typical procedures for an on-site testing & monitoring projects:
We will visit the site to understand the site conditions and the project nature;
We will write a project based on our site visit and mutual discussions;
If the proposal is acceptable to the customer, we will provide an official quotation, with the agreed proposal as the attachment
The project will start after the customer’s confirmation.