Apogee sensor.

johniii · Post by **johniii** » Mon May 06, 2013 6:16 pm

Is it possible for reef angel to read/record a mV DC signal? From an external sensor such as an apogee-sq120

rimai · Post by **rimai** » Mon May 06, 2013 6:26 pm

Can you really just measure mV from the sensor?

phrusher · Post by **phrusher** » Mon May 06, 2013 9:37 pm

Not familiar with the apogee but I recently completed a DIY PAR reader and the output from that was mV. But why connect it to the reef angel?

rimai · Post by **rimai** » Mon May 06, 2013 9:58 pm

Which sensor did you use?

phrusher · Post by **phrusher** » Mon May 06, 2013 11:30 pm

This. It's 400 to 1100 but as I understand it everything over about 700 is filtered out when submerging it in the tank. I haven't calibrated it yet against another meter but it was interesting to see how much lower the light got just by lowering the sensor a few centimeters (or inches for you guys

)

johniii · Post by **johniii** » Tue May 07, 2013 5:17 am

rimai wrote:Can you really just measure mV from the sensor?

Yes mV x 5 = par
Per apogees instructions

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johniii · Post by **johniii** » Tue May 07, 2013 5:20 am

phrusher wrote:Not familiar with the apogee but I recently completed a DIY PAR reader and the output from that was mV. But why connect it to the reef angel?

Just because I could.

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rimai · Post by **rimai** » Tue May 07, 2013 7:58 am

Try plugging into the probe and see if it goes out of scale...
A ph meter is nothing more than a mV meter.
Same for the ORP, but the scale of the ORP is much higher.

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