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Apparently, my ambient air temperature sensor doesn't require calibration. When I took this photo, my bike had been parked in my garage for several hours.
My ACU-RITE digital thermometer which has proven to be accurate, confirmed it was 72°F in my garage.
Also, I have EITMS disabled because I rarely find myself in conditions where it would be beneficial. For those that choose to enable EITMS, activation/deactivation is dependent on input from the ambient air temperature sensor. I could be wrong, but I believe the factory predetermined minimum ambient air temperature required to activate EITMS is 80°F.
So in other words, while some may claim knowing the ambient air temperature is useless information, it's useful information to your ECM.
While I concur with what you're saying, and find the air temp readout on my 14 SGS with the GT radio, like you're showing in your picture, to be relatively accurate, (1-2 degrees off), the air temp on my 22 SGS with the GTS radio is more like 7-8 degrees off. And what's funny, MoCo was more concerned about adding a decimal point to the display, rather than make it accurate. So, maybe it's 7.5 degrees of then, lol. Plus, the temp readout is bigger and easier to read on the GT Radios. The GTS's are tiny in the middle of a bunch of other info..
Last edited by MotoJockey; Sep 17, 2025 at 10:54 PM.
While I concur with what you're saying, and find the air temp readout on my 14 SGS with the GT radio, like you're showing in your picture, to be relatively accurate, (1-2 degrees off), the air temp on my 22 SGS with the GTS radio is more like 7-8 degrees off. And what's funny, MoCo was more concerned about adding a decimal point to the display, rather than make it accurate. So, maybe it's 7.5 degrees of then, lol. Plus, the temp readout is bigger and easier to read on the GT Radios. The GTS's are tiny in the middle of a bunch of other info..
If you're basing your temperature comparison on that infrared temperature gun it's not accurate. There is a spot ratio with those. They measure a circle AROUND where that dot is and it gets larger the further away you are from the surface. It averages the temperatures in that circle for what is actually displayed. They are highly inaccurate due to that.
If you're basing your temperature comparison on that infrared temperature gun it's not accurate. There is a spot ratio with those. They measure a circle AROUND where that dot is and it gets larger the further away you are from the surface. It averages the temperatures in that circle for what is actually displayed. They are highly inaccurate due to that.
I understand what you're saying, but EVERYTHING in the circle that this IR gun is seeing, in this picture, is the same temperature as it has ALL been sitting in my shop for a few days at this point. Also, these Fluke digital temperature guns are an industry standard in HVAC and Building Maintenance trades. Have been for years. This is not one off of eBay, Amazon, Harbor Freight, or TEMU.
And of the two that I have used over the years, they are both pretty spot on. Certainly not 7.9* off like the HD temperature readout shows.......
I understand what you're saying, but EVERYTHING in the circle that this IR gun is seeing, in this picture, is the same temperature as it has ALL been sitting in my shop for a few days at this point. Also, these Fluke digital temperature guns are an industry standard in HVAC and Building Maintenance trades. Have been for years. This is not one off of eBay, Amazon, Harbor Freight, or TEMU.
And of the two that I have used over the years, they are both pretty spot on. Certainly not 7.9* off like the HD temperature readout shows.......
You're not taking into account emissivity of the items though. Emissivity being wrong will throw that temperature off greatly. Shiny objects emissivity is not the same as something that is black.
ETA: that infrared gun also reads SURFACE TEMPERATURE not air temperature like the sensor you're comparing it to... Apples to oranges.
Last edited by DeadShort; Sep 28, 2025 at 08:10 AM.
Of course the gun reads surface temp, lol! So, your saying that the surface temperature of an object sitting in a room can have a different temperature, or Delta T, than the ambient air all around it that it has been sitting in for days? That the object wouldn't assume the same temp and be off by 8*?
Also, the area that the sensor is mounted on is all plastic, not shiny paint or chrome. These guns don't do well trying to shoot the temp of a glass of water either, lol.
As a side note, to help prove my case of the temp readout on my bike being way off, as I have ridden it over the country for the last 10,000 miles since I got it in July, I have also been comparing it to any thermometer readout of banks, stores, gas stations, and whatnot just for grins. Of course, we all know most ALL of those readouts are not accurate, BUT....... on and average, my bike is still about 5* higher than any of those I see. Just saying.........
Bottom line is, and was........ is there a way to calibrate the readout on the bike? Not whether or not my Fluke give erroneous readings, lol.
Of course the gun reads surface temp, lol! So, your saying that the surface temperature of an object sitting in a room can have a different temperature, or Delta T, than the ambient air all around it that it has been sitting in for days? That the object wouldn't assume the same temp and be off by 8*?
Also, the area that the sensor is mounted on is all plastic, not shiny paint or chrome. These guns don't do well trying to shoot the temp of a glass of water either, lol.
As a side note, to help prove my case of the temp readout on my bike being way off, as I have ridden it over the country for the last 10,000 miles since I got it in July, I have also been comparing it to any thermometer readout of banks, stores, gas stations, and whatnot just for grins. Of course, we all know most ALL of those readouts are not accurate, BUT....... on and average, my bike is still about 5* higher than any of those I see. Just saying.........
Bottom line is, and was........ is there a way to calibrate the readout on the bike? Not whether or not my Fluke give erroneous readings, lol.
Whatever dude, I actually have infrared training. That circle I assure you encompasses that nice shiny chrome in the picture. Those are also notorious for being inaccurate no matter what brand. Keep thinking that you're right...
Whatever dude, I actually have infrared training. That circle I assure you encompasses that nice shiny chrome in the picture. Those are also notorious for being inaccurate no matter what brand. Keep thinking that you're right...
What shiney chrome? The lazer is focused on the white plastic tip of the sensor. The surrounding area is black plastic.
Any chance you can swap the temp sensor wiht a buddy to see if it is the part and not the calibraiton?
That's a good suggestion! I looked at the one on my 14 SGS compared to the 22 SGS and other than dirt, they look identical. I'm getting ready to install a new set of Dakota Digitals in the 22 so I'll wait and see what the readout on those gauges is compared to the GTS screen before I swap out the sensors on the two bikes to compare sensor outputs.
Last edited by MotoJockey; Sep 28, 2025 at 12:05 PM.
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