Reef Angel Par Meter

[ecam]

What do you guys think of this. Especially the engineers out there. Is it worth it?

http://forum.reefangel.com/viewtopic.php?f=3&t=4302

Hi Guys,

We've got new stuff coming up!!!

PAR-Expansion-Module.jpg
PAR-Expansion-Module.jpg (13.03 KiB) Viewed 91 times



The PAR expansion module is an expansion module to measure PAR readings in your tank.
Don't settle with flux sensors that measure the entire range of visible light.
This PAR expansion module uses state-of-the-art quantum sensor that is capable of measuring PAR in PPF units (μmol m-2 s-1) in the correct wavelength of 400 to 700 nanometers (nm), which is used for photosynthesis in your tank.
Now, you can set the PAR expansion module and dial in your LED dimming lights to be at the exact range of PAR your corals need and never guess again!!
We all know that algae growth, detritus and many other factors affect clarity in water, causing the penetration of light that much harder. With this expansion module, you can compensate for those factors and adjust your LED lights on the fly to maintain optimal PAR measurements for your corals.
Pre-order it for a limited time discounted price of $250 while it lasts!!!
https://www.paypal.com/cgi-bin/webscr?c ... GFN94YC5HJ

Sensor Specifications:
Sensitivity: 1 μmol m-2 s-1
Calibration Uncertainty: 5%
Measurement Repeatability: <1%
Non-stability (Long-term Drift): < 2 % per year
Non-linearity: < 1 % (up to 2500 µmol m-2 s-1; maximum PPF measurement is 2500 µmol m-2 s-1)
Response Time: < 1 ms
Field of View: 180°
Spectral Range: 410 nm to 655 nm
Directional (Cosine) Response: ± 5 % at 75° zenith angle
Temperature Response: 0.06 ± 0.06 % per C
Operating Environment: -40 to 70 C, 0 to 100 % relative humidity, Can be submerged in water up to depths of 5 m
Dimensions: 2.4 cm diameter and 2.8 cm height
Cable length: 5 m

 

[Empire]

How often do you expect your par to change?

 

[Cdiggy]

Pretty cool. Probably good for t5 lights so you are not swapping out bulbs early

 

[TanksNStuff]

Pretty cool. Probably good for t5 lights so you are not swapping out bulbs early

Or too late... which would be even worse!

I think Roberto comes up with some really useful addons for the RA (like the water level sensor and the salinity expansions) and this is just another great feature he can provide. I think the price is a bit on the steep end for most people, and that is the introductory discount price? I think with LED's you might need to use it once (to setup your lights initially) but then never really need it again for 25-50 years. Still, a stand alone par meter like an Apogee usually costs around $350 plus... although you can also just get one of those Seneye monitor's (that have a Par/Lux/Kelvin meter built in) for around $170 on Ebay with free shipping.

I'm not sure I'll be picking that one up, but I think it's really cool.

If anyone else is, you might also want to check out this article about Par Meters and correction factors:
http://www.advancedaquarist.com/2013/2/equipment

 

[Mike S]

You can also just buy a sensor from apogee for around 150 and hook it up to a multimeter.

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