Rebreather World - View Single Post

divingabe · 12th October 2006, 20:12

Hi, I am a new Meg owner (since last August), and I have never gotten the sensors to reach max mv. in 6 seconds. I have been using the calibrating kit from INS, from the time I turn on the o2 it takes appx 30 seconds to flush the head and get the sensors to max. As far as checking the validity of your sensors, use the formula to check whether or not the voltage is appropiate for the sensor. Take the mv reading in air and multiply it by 4.78 and the sensor mv reading in o2 should not vary more than 1.25 mv or 2%. This checks its linearity, if ok keep the sensor if not change it.
I picked up the Andi Meg Manual when it was released and it does offer a wealth of info. It is a welcome addition to my library.
From my limited experience so far, some moisture on the sensor face will not damage it, once dried the effectiveness of the sensor is fully returned. It will only give erratic readings when wet, the water acts as a barrier to the oxygen and keeps the oxygen from reacting with the cell (as far as I understand the functioning of the cell).

Gabe

12th October 2006, 20:12	#3 (permalink)
divingabe RBW Member Current Rebreather/s: Megalodon Other Rebreather/s: Sport Kiss Join Date: Oct 2005 Location: Sag Harbor Posts: 92	Re: Sensors slightly erratic Hi, I am a new Meg owner (since last August), and I have never gotten the sensors to reach max mv. in 6 seconds. I have been using the calibrating kit from INS, from the time I turn on the o2 it takes appx 30 seconds to flush the head and get the sensors to max. As far as checking the validity of your sensors, use the formula to check whether or not the voltage is appropiate for the sensor. Take the mv reading in air and multiply it by 4.78 and the sensor mv reading in o2 should not vary more than 1.25 mv or 2%. This checks its linearity, if ok keep the sensor if not change it. I picked up the Andi Meg Manual when it was released and it does offer a wealth of info. It is a welcome addition to my library. From my limited experience so far, some moisture on the sensor face will not damage it, once dried the effectiveness of the sensor is fully returned. It will only give erratic readings when wet, the water acts as a barrier to the oxygen and keeps the oxygen from reacting with the cell (as far as I understand the functioning of the cell). Gabe
(Offline)