Found out my boom angle indicator was off by 3 degrees from a routine calibration check last week

The guy doing the calibration said my load charts were wrong by almost 2000 lbs at max radius because of that tiny offset, has anyone else had their SIIS unit drift like that without throwing an error code?

2 comments

2 Comments

margaret_jackson7315d ago

Wait, were they saying the load chart book itself was wrong or just the indicated load from the angle error? In my experience, a 3 degree offset on a long boom at max radius can indeed create a pretty big error in the load chart number because the radius changes so much with small angle changes. Your mileage may vary but I'd expect the SIIS to catch that if it's a consistent drift rather than a one-time calibration thing.

hayden46615d ago

Yeah, that makes total sense. A small angle change can throw the radius way off on a long boom, especially near max reach. I’ve seen guys trust the load chart numbers without checking the boom angle first, then wonder why the machine is tipping or the readout is jumping. Honestly, this connects to a bigger thing I notice everywhere: people rely too much on the tools or numbers and forget the real world variables. Like how weather apps say 30% chance of rain but you still get soaked because the local wind shifted. Or GPS telling you to turn left into a dead end. The system is good, but it ain’t perfect. Most times the error isn’t the chart or the sensor itself, it’s the little things nobody accounts for until something feels off. That’s why you gotta check the boom angle, the ground slope, the wind, all that stuff yourself, not just trust the screen.