How close to the object being measured must you be for accurate readings?
1110344
I would venture a guess of 5 ft. I have used it at 20 ft and it gives me a good idea as to what I am looking for. My main reason to purchase it was to find where cold air was coming in. I found the worst spots and then fine tuned it from there. Hope this helps.
1110345
It varies depending on the diameter of the area you are testing. Check out the diagram on the bottom right corner of page 3 (link below). http://servicenet.blackanddecker.com/documents/English/Instruction%20Manual/90539493,TLD100.pdf
1110346
I've measured from 12 inches to 6 feet with no problems, it's very accurate. I compared it to the one my AC repairman has last time he was here on a call. Very happy with my purchase. Was able to locate cold air drafts I never knew about and insulate those areas.
1110347
actually i did not compare it with other devices so i cannot judge, but at least i am happy with it
2283537
About 4 feet. Just pulled it out to look but no measuring device immediately near.
1672303
You can but keep in mind the accuracy is not survey quality. Best accuracy I've seen with it is +/- 10 feet.
265365
You can focus on objects as close as 1.5 feet. For distance viewing, it brings everything 6-8 times closer depending on which model you get.
1418624
Very accurate. You have no problem. Just be accurate in your installation. There is a small amount of adjustment that can be made.
1826647
I can not give an accuracy measurement as I no longer have access to surface plate and height gage. However, compared to my other equipment, I would estimate within 0.001" - 0.002" for the 7" square.
1653954
If it is a small item it will need to almost touch it .larger items it will detect it around 1 maybe 2 inches away .
1433088
I am not sure what the standard/norm is regarding how far the meter should be from the light source, but I would think you put the meter right up to the lens of the flashlight. Light output decreases exponentially with distance (proved in the experiment for which I bought the meter,) but I think that anywhere from touching the lens to maybe an inch out will give you a proper reading. I would put both the flashlight and the meter sensor on fixed surfaces, then look at the reading on the LCD display. Oh, and this is important: do it in a VERY dark room. The ambient light will make a difference. I am not sure what the standard/norm is regarding how far the meter should be from the light source, but I would think you put the meter right up to the lens of the flashlight. Light output decreases exponentially with distance (proved in the experiment for which I bought the meter,) but I think that anywhere from touching the lens to maybe an inch out will give you a proper reading. I would put both the flashlight and the meter sensor on fixed surfaces, then look at the reading on the LCD display. Oh, and this is important: do it in a VERY dark room. The ambient light will make a difference.
615128
As with most mechanical scales, it would be more accurate consistently if it were on a level surface. However, if you are OK with the inaccuracy of a scale on an uneven surface, than it should be fine.
922528
If it's important to get just exactly the right temp. I would use this till it gets close then check with a accurate, adjusted gauge. Once you know how this reads your good to go. This allows you to know the temp. without standing over it.
743771
It's not a graduated cylinder that's for sure. Based on the overall diameter of the location you are taking a measurement I imagine it would be very hard to get consistent readings, just due to parallax. If you're looking for something super accurate, this isn't the right tool.
1951119
The instructions state that the farther away you are, the larger the area will be that you are measuring. In my house I read the hvac registrars in an 8 ft ceiling no problem. But if it's a precision reading you are looking for (ie temp of a small area) it may not be best. I would think all hand helds would have the same issue though.
175457
Hi Stony - I am with BAFX Products Support. How far away you can use the thermometer from the object you are temping is really completely dependent on what object you are temping, how big the object is, ambient temp compared to the object being measured and how accurate you are trying to be. Obviously the closer you can be to the object the more accurate it will be in most cases. What I can say for certain is that unless you are measuring a very large object with a high temperature it likely is not going to give very good readings at 20', not many IR thermometers will. To better assist you in your decision making process it may be helpful to know that the D:S ratio on this thermometer is 12:1. This means that at a distance of 12 inches from the object you are temping the thermometer will be taking a reading from the area of about a 1 inch circle. At 36" you will be reading the area of a 24" circle etc etc etc. The further you move away from the object the less accurate it will become. At the 20' you mentioned you would be temping an area of about 20" or almost 2 feet big, plus in this case you will likely then run into the issue of IR heat from other objects you do not intend to measure interfering with the reading as well. I hope this information helps some. If we can be of further assistance please contact us directly through the Amazon messaging system for a faster response as we are not always able to see responses that are posted in this Q&A area in a timely manner. Sincerely, BAFX Products Support
592614
I don't have mine in front of me, but I'd venture to say that 6" is accurate or very close anyway.....
780253
When I used mine, it was accurate in any object above 3 ounces, as I didn't really need to weigh anything that was less than 3 ounces. I didn't have any issues with accuracy, my only issue was with it dying after a period of time with very light use.
1225955
Resolution and accuracy are two different things. Resolution is the detail you see on the display (i.e. 0.05 degree increments). Accuracy is the error interval in which the device's measurement falls as opposed to the actual physical angle (i.e. plus/minus 0.2 degree or a 0.4 absolute degree interval). So, for example, if your display reads 22.35 degrees, then the actual physical angle of the object is between 22.15 and 22.55 degrees. As you see, the absolute value of the error interval is 0.4 degree. That's less than half a degree of error and suitable for most carpentry applications. It is not, however, considered accurate enough for high precision metal work.
49376
This seems to be a very well made tool and is graduated to allow readings down to 0.0001". I am not sure I would trust it to be real accurate to such dimensions. Your touch would have to be better than mine to feel confident to readings less than 0.001. - Chet