CO Detector To check CO Content In Vehicle Exhaust

[George7941]

Works pretty well. Readings go up to 400ppm when the Honda CBR300 is first started up and is running in open loop and the reading goes down to zero once the engine warms up and goes into closed loop.
It shows the catalytic converter working well and that is why I have not eliminated it,though I have been tempted to, to lighten the bike.

 

[Dave9]

Just ride. This topic is a fail.

 

[paulo57509]

Years ago, I borrowed a Gastester to adjust the mixture on the Ducati. The FI system runs in open loop that's adjusted via a potentiometer in the ECU. The pot adjusts the fuel injector dwell.

https://www.gunson.co.uk/Product/G4125/Gastester-Digital

It's not the easiest device to use; calibration time consuming and the CO measurement tends to drift over time. It's easier to adjust the pot like auto carb idle mixtures; find the end points of the adjustment and set the pot about 1/3 from stumble rich.

 

[George7941]

You probably would have had better results if you had just used the CO detector in your house.

There is a bit of a lag though, the detector takes about thirty seconds to respond.

 

[bobdoo]

These types of detectors respond VERY slowly. You can google the 'requirements'. You will be shocked, and you should know that you could be seriously affected before any of these typical detectors alarms. It can take literal *hours* before a unit will alarm, at lower, but still dangerous levels.

Forensics makes a $200 battery powered detector which responds quickly and accurately, and to levels at the 0.x PPM levels. I've got one of these, and another $100 unit that measures in the single-digit PPM. These two detectors alarmed from the Canadian fires a few years ago (at occasional levels of 5 PPM). It took me a year to figure out that the detectors were NOT falsely alarming!

I got these units in part because of our health issues. If you are elderly, or on CPAP, or have breathing issues, you are very much more at risk of health degradation from low levels of CO.

 

[Dave9]

Some of them detect quicker but a lag in accuracy, so it takes a lot of CO to get them below the alarm point. For example the first time I got an inexpensive household detector, I tested it by holding it inside an upside down bucket and held a lit piece of rolled up newspaper just far enough below to not burn my arm. It went off in about 20 seconds. It was this Kidde or very similar. I could've sworn it took 1 x 9V battery so might have been their older model.