I want to measure light pollution from out door lighting. Need accuracy below 1 lux eg (0.1 to 1 lux)
1547940
The minimum resolution is 0.1 lux. I would recommend looking for another meter that has a lower resolution if you care about accurately measuring to 0.1 lux resolution.
1547941
From the instruction manual:Light-measuring levels ranging from 0.1 lux to 200,000 lux with auto zeroing and corrected for luminous efficiency function (manually calculated for non-standard light sources).Accuracy is described as: +- 3%+10dgt with a repeatability within 2%.ChuckJ
1547942
I buy a luxmeter of this brand and capacity, and has the ability to measure light from 0.1 lux to 200,000 lux, divided into 4 types of measurement ranges.
1842960
80 Lux version, but I measured 93 lux at 10 meters with an Exetech meter. This light puts out almost exactly as much light at 10 meters as an XML equipped bike light driven at 2500 ma., but the Philips SafeRide measured only 620 ma drive current to it's 2 Luxeon LEDs.
101844
It's not super bright...I still need natural light and overhead light to use it.
459895
I am not really familiar with the procedure for testing aquarium lights, so this is hard to answer. The bottom line is that this meter will measure for comparison light readings, based upon differences in the source of the light. I hope this response is useful.
496496
The less light around you, obviously the better. No one can answer your question without a lot of additional information. What is a small town? 1000? 10,000? 30,000? Are you going to use it near street lights? Even your porch light and your neighbors lights can kill you. No better or worse than any other telescope. I actually bought mine for an astronomy class. I have seen the stripes on Jupiter and its four moons. I have seen Saturn, Mars, Venus, Mercury and the Orion Nebula.
1881232
The Luminous Intensity for this kind of light is around 90-100Lm/W. Then you can calculate the output lumens as the wattage you need.
1389853
I don't have a meter to measure the brightness/lumens but it is effective as a night light on DIM and very effective for lighting an area when the motion detector switches it briefly to BRIGHT illumnating a ~10+ foot radius area near the light. The LED panel has four bright elements that also diffuse through the white panel surface to give a very bright rectangular illuminator - more effective than four pin-point LEDs.
2226235
Thanks for your inquiry. This unit has a Working Ambient Illumination of up to 2000 lux.
760724
It's accurate to the specs. It's nighttime here so I'm not going to be able to physically measure. I hope this elps.
1433090
This meter only measure lux which can be converted to footcandles. It does not measure total lumens.
1983485
Go to the Optomausa website and search for ML550. In the tabs at the bottom, click "Distance Calculator." I found this very useful in my decision-making process. Mine is around 6 months old and I've been pleased but I use it in a room that is lower light. (http://www.optomausa.com/products/detail/ML550)
1898335
We live in Houston and there is too much light pollution. We are taking it down to our bay house next week for the Fourth of July and I can give you an answer then.
1790323
A given amount of light will illuminate a surface more dimly if it is spread over a larger area, so illuminance (lux) is inversely proportional to area when the luminous flux (lumens) is held constant. One lux is equal to one lumen per square metre: 1 lx = 1 lm/m2 = 1 cd.
2132353
Box is marked: Average luminosity: 750 lux CCT: 5500 K Emitting Angle: 120 degrees
1860316
I can't explain how to measure the light and how it works in this small place, you can google it. The value reading on this measure is LUX, you don't need to use any conversions, you can read Lux value directly on the screen, but I have to tell you that the value is not accurate compare to the good one.Mine have problem after 1st week using it.
1688876
There are street lights around me so I can see far beyond the 40 foot mark. It is not high quality at distance for identifying offenders.
1671013
Light quite harsh even on low, red should be better. Made more for outdoor open space area. You would see well, just not a mood setter