Dear All,

We're in need of a couple of light meters for incident light (lux/fc
only basically). Ideally it should be calibrated for both Foot
Candles and Lux, but FC only is fine. We're looking for something
basic and functional that copes with very low levels - down to 0.01
foot candles.

Any recommendations?

Thanks,

Thomas.

Dear All,

We're in need of a couple of light meters for incident light (lux/fc
only basically). Ideally it should be calibrated for both Foot
Candles and Lux, but FC only is fine. We're looking for something
basic and functional that copes with very low levels - down to 0.01
foot candles.

Any recommendations?

http://www.megatron.co.uk/homepage.html

You're not stating your accuracy or cost requirements, nor what light
source(s) you'll be measuring. For my needs, I found the IL1400
(www.intl-lighttech.com) to be the best trade-off between accuracy and
cost. There are cheaper units out there, but only really accurate with
incandescent light sources. IL also has a number of different
detectors, filters, and optics to choose from so they're pretty versatile.

On Mar 7, 1:59 pm, "Douglas G. Cummins"
Douglas.Cumm...@MAPSONcalcoast-itl.com> wrote:
You're not stating your accuracy or cost requirements, nor what light
source(s) you'll be measuring. For my needs, I found the IL1400
(www.intl-lighttech.com) to be the best trade-off between accuracy and
cost. There are cheaper units out there, but only really accurate with
incandescent light sources. IL also has a number of different
detectors, filters, and optics to choose from so they're pretty versatile.

We're looking for something for general lighting study, not for
fixture development, etc. We're open on price, but basically so we
can survey a space and with reasonable accuracy identify the light
level sufficient for protecting conservation sensitive objects
(artwork).

Thanks

T

Dear All,

We're in need of a couple of light meters for incident light (lux/fc
only basically). Ideally it should be calibrated for both Foot
Candles and Lux, but FC only is fine. We're looking for something
basic and functional that copes with very low levels - down to 0.01
foot candles.

Any recommendations?

Thanks,

Thomas.

"Thomas Paterson" <t_p_pater...@hotmail.com> wrote in message

news:1173295924.042445.214680@c51g2000cwc.googlegroups.com...

Dear All,

We're in need of a couple of light meters for incident light (lux/fc
only basically). Ideally it should be calibrated for both Foot
Candles and Lux, but FC only is fine. We're looking for something
basic and functional that copes with very low levels - down to 0.01
foot candles.

Any recommendations?

Thanks,

Thomas.

The Meterman LM631 for about $100. meets your requirements. I have one and
it's accurate at room illumination levels. I haven't checked it down at
0.01 fc though. There's information at:http://www.professionalequipment.com/

Terry McGowan

Dear All,
Any recommendations?

On Mar 7, 1:32 pm, "Thomas Paterson" <t_p_pater...@hotmail.com> wrote:
Dear All,
Any recommendations?


Thank you all for your responses. Based on my research, I think I'm
going to go for the spec below, unless anyone has any warnings about
it:

http://www.dasdistribution.com/products/lx1108.htm
Accurate to 5%, switches Lux/Foot Candles for foreign work, great
sensitivity, can be set for different light types, min and max hold,
memory, etc. Sensor on extension cable. About $120, or $170 with a
NIST calibration certificate.

Does anyone know whether the NIST calibration certificate is worth
paying for? It doesn't look like it to me, assuming that it is
properly calibrated without the certificate, but if anyone thinks
otherwise, I'd be interested in your opinions.

That looks like the same meter I use but it has different
brand name and model number.

Well, it all depends upon the type of work you do. If you
are required to show that your measurements are traceable to
NIST then you should get the certificate. If not, then I
don't see the value. (I am not a certified laboratory so I
did not get the certificate.)