That's a CEM DT-1300/1301 (think on the Aussie page they blanked out the logo LOL!). Do note that they consistently under-read by some 10-15% in lux for LEDs, not that they purposely wanna do that, just that its calibrated to a 2856K incan source. CW LED has a drop in yellows in the spectral output. Well documented in CPF.
http://www.candlepowerforums.com/vb/showthread.php?94232-Light-Meter-Benchmark-Testing-%96-CPF-style
Look at the DT-1300, its very nearly 100% accurate for incan.
BTW when you are mentioning lux, you need to mention distance. Or you can mention Candlepower. Eg 10,000 lux at 10m = 10000 x 10^2 = 1,000,000 1 million candlepower. (a lot of those searchlight have very inflated CP figures). This gives you a very good idea on throw, though not on corona/hotspot size and characteristics.
HIDs apparently do not have so much of an issue, even for 5000K bulbs.