Combustion analyzer with digital I/O port.

jlag

Do any manufacturers make a reasonably priced (< $1K) combustion analyzer for #2 residential with a digital IO port (usb, serial, wifi, Bluetooth, etc.)?. I wish to use this for a boiler monitoring system I am working on in order to start analysis and send results to a data acquisition system.

jlag

Screen shot of the work in process.

ratio

Maybe look into just the sensors and cypher up the analysis yourself? IIRC it's an O₂ or a CO₂ sensor, and two temps.

Looks like you've already got the flue temp, just need the combustion air temp & either the O₂ or CO₂ from the flue gas.

B_Sloane

ratio said:

either the O₂ or CO₂ from the flue gas.

NEVER use C02

ratio

B_Sloane said:

NEVER use C02

WHy not? Don't some combustion analyzers use CO₂ instead of O₂?

GroundUp

B_Sloane said:

ratio said:

either the O₂ or CO₂ from the flue gas.

NEVER use C02

Except ALWAYS use CO2, per MFG specs

captainco

Bacharach Intech allows you to download data into you I-phone but only one at a time. Not sure how long you are conducting the test? To datalog for more than 15-20 minutes would take special sensors and sampling assemblies.
CO2 varies based on the current btu content of the fuel. CO2 readings can be misleading. All fuels produce close to 100% of their CO2 value, whatever it is. O2 determines how much it is diluted, O2 is always 20.9%. Analyzers that calculate CO2 use 11.7% or 11.8% as there guideline, but this does not apply to the actual btus of the fuel.

Zman

ratio said:

B_Sloane said:

NEVER use C02

WHy not? Don't some combustion analyzers use CO₂ instead of O₂?

I don't know of any analyzers that measure CO2. Most if not all measure O2 and CO then calc the CO2. I really don't understand why boiler manufactures specify CO2 readings, no one is actually taking them.

ratio

Huh. I thought most used one type of sensor & a few used the other.