Features & Applications:

This window energy profiler allows you to test actual windows that have already had the sash or frame attached to the window. The instrument can test windows in the factory, but more importantly it can test windows in the field that have already been installed. Simply open the window and slide the WP4500 around the profile of the window to conduct your performance measurement. The opening of the instrument is actually large enough to fit around the entire frame of many replacement windows before they are installed. The WP4500 measures the UV(A) (ultraviolet), Visible Light (VLT), and Near Infrared (NEAR IR) transmission values for a given window or window film. The instrument also estimates the Solar Heat Gain Coefficient (SHGC) values for transparent Low E and clear windows. The SHGC calibration of this instrument is NOT intended for use with tinted, colored or reflective (mirrored) surfaces, including window film products.

Being a self-contained system, there are no additional light sources or power cords necessary and no adjustments to make. Simply slide the instrument around the profile of the window and watch the resulting performance data appear on the display. The WP4500 is equipped with a HOLD feature. Any time the HOLD button is pushed, the measurements that appeared on the display at that moment will be locked on the display until the HOLD button is pressed again. This feature is very helpful when the window you are testing may be in a difficult-to-reach location. This could also be helpful for testing windows on upper floors of buildings where it would be unsafe to lean out the window to read the display. To use the feature, simply position the meter around the window profile you want to measure. When you have the window sample perpendicular to the opening, press the HOLD button and then read the results on the display. This feature can also be helpful if you want to hold the values long enough to write them down or show them to your customer.

Features:

• Estimated SHGC values demonstrated along with UV, Visible and Near IR Transmission
  
• Single, double or triple pane testing easily accomplished
  
• Test any sample width up to 4.15" thick with a sash/spacer/frame depth up to 4.15"
  
• No additional light sources needed
  
• HOLD feature to freeze the display for hard-to-reach/view measurements
  
• Auto-calibration at start-up: NO manual adjustments required
  
• Battery operated (9-volt): no power cord required
  
• Automatic power-off feature for extended battery life
• Replace Battery Indicator
  
• Continuous measurements
  
• Professional image complimented by simple operation
  
• Convenient push-on/push-off power switch
  
• Protective, custom carrying case
  
• Convenient handle for single hand operation

What it does:

• Test the Energy Performance of Windows: The WP4500 displays four real-time measurements of windows: the estimated SHGC value along with the UV, Visible Light, and Infrared Transmission values.
• Test installed windows (in-frame): The WP4500 has a large enough opening to fit over the window sash of an installed window.

Other features:

• Automatic calibration: Measurements automatically revert back to '100%' for transmission measurements and '1.00' for SHGC.
  
• Hold button: By pushing the hold button, the WP4500 will keep your current measurement displayed. This is helpful when you are reaching to take a measurement and the displays aren't visible at the time of the measurement. Also, in the sales process, this feature allows you to keep measurements displayed long enough to explain to your customers exactly what the numbers mean.
  
• Automatic power-down: This adds to the energy efficiency of the unit and keeps the number of battery changes to a minimum.
  
• Uses common 9-volt battery: These are simple to find, purchase and replace. You don't have to worry about tracking down an obscure battery or power source at an inopportune time.
  
• Completely portable with convenient handle for taking measurements: Being battery powered makes this unit completely portable. You can take measurements anywhere.
  
• Convenient carrying case included: The padded carrying case protects your investment.

Note: SHGC measurement is not valid on window film or colored glass.

Applications:

There are numerous applications for this product. For the replacement window market, the WP4500 can be used as a sales tool to evaluate the poor performance of a homeowner's existing windows showing the need for replacement windows. You can test the customer's existing windows an then use the same instrument to show the excellent performance of the energy efficient window product you are selling. For window film applications, you can conduct very quick and easy before-and-after demonstrations by adding a piece of film to the window to show the results.

For job-site inspections in the field, you can confirm the performance of windows when they arrive at the jobsite to ensure the correct product was received. In the field, the WP4500 can be used to differentiate different types of Low E coatings. By comparing the measurement results from the WP4500 to the performance data sheet figures of various Low E coatings, you can roughly identify the type of Low E used in the window. This is a great aid for those troublesome customer complaints that are challenging whether they received the correct windows. In the factory, double-check windows in the production environment to make sure the correct Low E was used in assembling the window. The WP4500 can be very helpful in identifying windows that are mislabeled or not marked at all.

Spectrum Specifications:

In addition to the SHGC value of your window, the WP4500 displays energy transmission values in three spectrums. The light sources used for each spectrum have a peak response at the following wavelengths:

• UV: 365nm
• Visible: Full weighted spectrum: 400 - 700nm
• Infrared: 950nm