How to Calibrate a A&D FX-120i LAB Balance Scale

Instructions on how to calibrate a FX-120i Lab Balance.

You will need a 100gm class F1 calibration weight. I

[barndweller]

Thank you, just got my scale today and was reading the manual and could not understand, you made it simple!

[ctclimberguy]

Ok, thank you ! I love that FX. Now I realize just how slow reloading was before the FX.

[blueridgeboy]

Just had to recalibrate mine thanks for the video. Mine was off by .14 grains

[chrismalterre]

Thank you Joe, this video made calibration super simple.

[precisionmachineshed]

Good info, but you should be using a tweezers or hemostat type tool to pick up the weight and set it on the scale. Oil from your skin will add weight and make the calibration weight out of spec. I use to calibrate lab scales and you don't touch the calibration weights ever with your bare hands.

[bbjuneau]

Go to a place that does countertops and ask for a piece of scrap granite. If they don’t have that, Corian is a good substitute. You can usually get the cut out from the hole they make for sinks for free, or a few bucks. It will insulate the balance from any vibration.

[Gnolomweb]

lol.... "opens window, lets make a precision weighing video"

[treeratbuster]

Brilliant. Thanks. The owners manual is a bollix to understand.

[johnnyhuego]

Whats that concoction you got hooked up there to drop powder?

[maxpowerdog]

Where/how are you setting your total charge weight? On the scale or by tuning the trickled? I would assume you set the scale for the desired charge weight?

[R_J]

Don’t touch the weights with bare hands. Use a fresh pair of unpowdered nitrile gloves or a brand new pair of those cheap, disposable cotton gloves.

A good idea to remove the weigh pan and wipe it clean with a dry microfiber cloth from Harbor Freight.

Anything that could transfer unseen grit, fingerprints, or powder residue to the calibration weight should be eliminated.

The scale could be dirty when calibrated, doesn’t really matter, but you don’t want anything, even the most minute dirt or dust transferring to the cal weight and then going back into its storage container.

I don’t recommend tweezers for the average guy. Just too dang easy to drop the weight and then you can’t trust its calibration after that.

[tommiewaters]

How do you calibrate without a calibration weight.

[amarshall]

Joe, is that ebay seller ok? does it show up reasonable quick coming from china?

[ctclimberguy]

You are calibrating for 100 grains but your little grey pants is on there. Wouldn't that add to the 100gr & cause your calibration to be off?