[PSUBS-MAILIST] Optical Oxygen Sensors

[Alan via Personal_Submersibles]

Hi,
I've been reading a bit about the solid state optical oxygen sensors which
have a longer life & are more reliable than traditional galvanic cel ( battery)
type O2 sensors. 
Poseidon developed them for the dive industry & they were hailed as a break
through at the time. There is a company, SST sensing that is marketing them for 
varying applications....https://www.sstsensing.com/optical-oxygen-sensors-key-benefits-and-applications/
Is any one familiar with them? There seems to be a big price difference between
varying brands.
The ones I've seen are calibrated internally for pressure & temperature & transmit 
data rather than a voltage or current reading. I am looking for a cheap option that 
has a current or voltage signal rather than data & I will be using something like a raspberry Pi or Arduino to process the reading.
I am also wanting 3 as in a rebreather to compare readings.
Do they need much of an O2 flow over them or are they ok just being placed 
randomly within the hull?
Cheers Alan
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