With the purchase of our new LabSpion Goniophotometer, we at P&A will be able to improve the photometric data of each of our luminaires. This will allow us to more accurately assess the luminaire requirements of each of our clients, ensuring that the lighting we specify is perfect for each individual installation.

The Gonio we selected uses a spectroradiometer which can be used to measure a wider variety of luminaire characteristics, this will provide us with a large range of information and more accurate data. Some of the data we are now capable of recording includes:

• Total luminous flux (lumens)
• Useful lumens (per EU 1194/2012)
• Zonal flux (lumens)
• Stabilisation time (minutes)
• Peak luminous intensity (candelas)
• Cone & ISO illuminance (lux)
• PPFD (photon flux density)
• Unified glare rating (UGR)
• CIE 1931 & 1960 chromaticity coordinates (xy, uv, Duv)
• Correlated colour temperature (CCT, Kelvin)
• Colour rendering index (CRI, R_a & R_1-14)
• Colour rendering index (IES TM30, R_f & R_g)
• Colour rendering (CQS, Q_1-14)
• Spectral power distribution (360-830nm)
• Beam angle (degrees)
• Beam shape (luminous intensity versus angle of inclination & azimuth)
• Power consumption (Watts)
• Power factor
• Luminous efficacy (lumens/Watt)