4 new luxmeters compared (sept 2018)

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contactcr
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Going to resurrect this thread.

Was wondering if anyone has run into other meters which have similar custom calibration ability like the Extech LT45 but at a cheaper price?

ktk
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Hello, everyone. This is my first post in the forum Smile
I’m also looking for my first light meter.
Already made one styrofoam integration sphere and tried to measure some Phillips lamps with a Canon EOS 50D from RAW data :D. But that’s another long story.
I’m currently aiming for a relative consistency measurements between the lights. And later I will try to use absolute djozz-lumens Smile
Obviously, it is much easier if you have a dedicated (dedomed) lux meter for the sphere.
So, I have contacted all stores (6-7) currently selling Tasi 8133 on Aliexpress, asking them which version they have. Some like frank hu, honestly reply they have only the black one.
Still, one replied that they have the red-capped one and sent me a picture. The store is Ali World Shopping Center.
So I want to ask you:
1.Has anyone bought a bad TASI 8133 from this shop?
2.Are the serial numbers the same on all TASI 8133, good or bad ones? (I’ve seen products from China with a single serial number for all units in a batch before)
3.What is your TASI 8133 serial number, djozz? The one on this picture seems to be 16303260(?).

Notice the darker red color of the cap. Is this normal?
4.I will probably buy one more cheap meter to have as a backup, if the TASI is totally screwed. Has anyone bought any of these:
TL-601
TES-1332A

Thank you for your time!

djozz
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Welcome to BLF Smile

The dark red bit is what mine also has. The serial number of my TA8133 is different: 17001457.

I guess that you have the ok quality version, but to be sure you can check how the inside of the sensor is build, see post #2 and post #30. (If you just take a look and do not mess around inside the sensor, it should not affect the calibration).

ktk
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I ordered the TASI and the TL601, so I will write back when they arrive.
The TES seems to be too good to be true – many shops sell it for 100$+ and 32$ on ebay is quite the step down.
Also there seems to be a version with a wide dome and one with a much smaller one, all bearing the same model number, so that’s a bad sign too.
Now I only need to find some calibrated sources. Apart from buying from a laboratory, do you know any other way to obtain something that doesn’t vary too much in lumen output from unit to unit?
I’ve read in one of the pinned topics here that the Convoy S2+ is a very popular first thing to buy.
Have you compared what you get out of the box, e.g. for a L2 T5-5B 4000-4200K unit with AMC7135*4 drivers?
I’m not interested in modding it, at least not for the moment.

djozz
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Try maukka for calibrated light sources:
http://budgetlightforum.com/node/61372

Swib
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I purchased this meter in January and I believe it is reasonably accurate for our purposes although I’m sure I paid less for it from an Amazon seller. I did pay for calibration and received a NIST certificate stating it was within 5 percent at 1000 and 5000 lux with a tungsten light source.

I really like the meter as it has large digits that are easier to read at 5 meters.

If you don’t like what it looks like on the wall, take it outside.

Theodore41
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Is there a review please of the dr. meter LX 1330B luxmeter?I have difficulty to take a measure with this,while I have not,with one of my HS1010.

djozz
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Theodore41 wrote:
Is there a review please of the dr. meter LX 1330B luxmeter?I have difficulty to take a measure with this,while I have not,with one of my HS1010.

In the OP of this thread you would find links to my earlier luxmeter tests, the one from april 2018 included a luxmeter that at least looks very similar to the “Dr Meter” one that you are interested in. But as I have learned with budget chinese luxmeters, you never know for sure what is inside even if the package looks exactly the same . Here is the link once more: http://budgetlightforum.com/node/60218
Theodore41
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Hi djozz.
Mine is dr.meter luxmeter,as it is written on it,and my difficulty is about the peak and hold buttons.I want the reading to stay still,until I go by the meter and take the reading,but when I go there,the reading is lost…

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