FX120i drift

[64Rambler]

There's a ground screw on the back of the scale. You will need to run a wire and connect it to an earth ground. Easiest access to an earth ground is through a wall receptacle. Often, the screw that holds the receptacle cover on is connected to ground and you can attach the wire to that screw. You can confirm that with a DMM.

Yes, this, and in addition, I ran a large gauge ground wire from the next receptacle to the front of the scale and touch it when using the scale. It brings me to the same potential as the balance. Standing on an anti-fatigue mat insulates rather than grounds, so the wire helps drain static that would otherwise stick to me.

 

[Rat Rifle]

A mistake thinking that being able to weigh to the extra crumble of a kernel will make a difference in your groups!!

Today I shot in the 1's consistently at 100 using powder thrown with a chargemaster in a friggin tent when it was way windy outside. I have only known 3 old time champions and they have all thrown by volume with Harrels or Chargemasters and all have told me that as long as you are within a 10th then you cant blame your shooting on the charge!

BTW, not making fun cause I got caught up on this as well a decade ago. I also sold my concentricity gauge and bunch of other unnecessary time wasting gadgets.

I agree that Your method can work at 100 yards.

 

[JMA]

Yes, this, and in addition, I ran a large gauge ground wire from the next receptacle to the front of the scale and touch it when using the scale. It brings me to the same potential as the balance. Standing on an anti-fatigue mat insulates rather than grounds, so the wire helps drain static that would otherwise stick to me.

Get a anti static wrist like computor people wear

​

 

[xr650rRider]

Would you mind showing what the RF choke is?
I have got mine just plugged now to a Tripp-lite isobar thingy. Stupid question is -if my house has the three prong grounded outlets and the scale has that type of plug too, shouldn’t my scale be grounded now?

Strange yours has a grounded wall plug? Most have a wall wart that powers the scale that converts AC to DC and doesn't even use the ground connection. That's why there is a ground screw on back that allows you to reference the exposed metal surfaces of the scale to same potential as your power source (dissipates static charge) . Your Tripp-lite probably has a 3 prong cord and again the exposed metal surfaces of the Tripp-lite would be referenced to ground. I don't use any power conditioner, plugged straight into wall, no ferrite bead, no choke, use my phone in close proximity, did have a florescent light (converted to LED) and did wipe plastic surfaces with IPA and used dryer sheet and my scale is grounded and doesn't drift, unless wind currents or temperature swings.

 

[Kracken McGraw]

Strange yours has a grounded wall plug? Most have a wall wart that powers the scale that converts AC to DC and doesn't even use the ground connection. That's why there is a ground screw on back that allows you to reference the exposed metal surfaces of the scale to same potential as your power source (dissipates static charge) . Your Tripp-lite probably has a 3 prong cord and again the exposed metal surfaces of the Tripp-lite would be referenced to ground. I don't use any power conditioner, plugged straight into wall, no ferrite bead, no choke, use my phone in close proximity, did have a florescent light (converted to LED) and did wipe plastic surfaces with IPA and used dryer sheet and my scale is grounded and doesn't drift, unless wind currents or temperature swings.

Well your right, scale does just have a 2 prong on the converter. Now to find out if the Tripp-lite has any of the screws to connect a ground wire to.

 

[Tesoro]

I agree that Your method can work at 100 yards.

A 10th of a grain changes the vel in 308 sized cartridge about 6 fps with the proper powders. Thats my logic in a nutshell!

 

[kelbro]

Would you mind showing what the RF choke is?
I have got mine just plugged now to a Tripp-lite isobar thingy. Stupid question is -if my house has the three prong grounded outlets and the scale has that type of plug too, shouldn’t my scale be grounded now?

The RF choke is one of the clamp on ferrite beads. Here's a good selection for different size power cords. One wrap around the choke takes care of a lot of interference.

Amazon.com

 

[Retired shooter]

"the water lines and/or gas lines entering the house are copper/steel buried for at least 10', then they would be a good ground if exposed where you could wrap a wire around and attach to scale"

Water line yes, GAS. line. No !!

 

[xr650rRider]

water line yes, GAS. line. No !!

Need to read the NFPA/NEC code section 250 on grounding. Metal gas lines have to be connected to grounding system.

 

[Liven The Dream]

I had the same issues until a i grounded my FX120i. Every issue went away!

My Wife said that about me!

 

[Retired shooter]

Need to read the NFPA/NEC code section 250 on grounding. Metal gas lines have to be connected to grounding system.

View attachment 1740038

View attachment 1740039

BONDED. or. Grounded

 

[Retired shooter]

BONDED. or. Grounded

The controversy behind bonding and grounding metal gas piping systems arose when many electrical professionals questioned the rules and regulations of the National Fuel Gas Code (NFPA) 54. For example, Sec. 3.14(a) in NFPA 54 requires each aboveground portion of a gas piping system upstream from the equipment shutoff valve to be electrically continuous and bonded to any grounding electrode. Sec. 250-104(b) of the National Electrical Code (NEC) agrees with this mandate. On the other hand, NFPA 54 [Sec. 3.14(b)] parallels Sec. 250-52(a) of the NEC, which states: "You must not use an underground metal gas piping system as a grounding electrode" No wonder so many people are uncertain

 

[Retired shooter]

I just received my Fx120 thought about GROUNDING to steel propane line running to furnace. My research led me to not use the gas line. Another reason not to is in today's world steel gas lines are epoxy coated for corrosion prevention, lots of new installed gas lines are plastic. If & when my scale shows drifting I will ground thru electrical system.

To all a good day.!

 

[Kracken McGraw]

I just received my Fx120 thought about GROUNDING to steel propane line running to furnace. My research led me to not use the gas line. Another reason not to is in today's world steel gas lines are epoxy coated for corrosion prevention, lots of new installed gas lines are plastic. If & when my scale shows drifting I will ground thru electrical system.

To all a good day.!

You more than likely won’t ever have to.

 

[kelbro]

Even after the grounding and ferrite beads, I'm still seeing a slight drift from time to time.

Solution: zero every hour or so.

 

[charlie b]

Curious. When it drifts does it keep going in one direction or does it go back and forth between two points?

 

[Hemipowrd]

One additional thing I haven't seen mentioned is to set the Zero Tracking in the scale settings to "2". Default is "1". I tried setting it to "3", but that was too strong. I had some drifting when it was set to the default, but no drifting issues after making the change to "2".