A&D EJ123 scale ?

[Jimmy James]

Anybody have one of these relatively inexpensive scales? +/- 0.02grns spec. $315 to my door.

 

[hikfromstik]

I love mine . It's a bit humidity sensitive , but if you keep your temp constant and keep the bubble level center it'll sit on zero for days ( with breeze cover on ) . Imho it's the best sub $400 scale . It blows the gempro away . Their is a bit of confusion over if it's magnetic force restoration . Cambridge environmental claims it is magnetic,just without the fast computing power of the fx 120 . It blows the cheaper electronic scales away . pm me if you have any questions . Another member here has vast knowledge on how to stabilize and stop electrical interference . Maybe he'll stop by . He helped me tremendously

 

[JimSC]

according to the .pdf manual http://www.scalemanuals.com/andmanuals/ej-series-milligram-manual.pdf it has a linearity of .003 grams so it would be accurate within 2 or 3 kernals of Varget. get a clamp on line noise filter for the electrical cord , they are only a couple of bucks and help with drift from what I have heard

 

[Jimmy James]

Thx guys!

 

[Jimmy James]

Just ordered one after loading 50 rnds of 308 that should have been under 2700fps with an ES under 10 and they are all over the place with an aggregate ES of 100. Thats after five 3 shot groups. 4 year old Chargemaster. Ugh! Now I have to order a trickler, something that has been missing from my loading bench. Never felt the need with the Chargemaster.

 

[nmkid]

I would opt for one of these IF I didn't live in Virginia!

 

[Jimmy James]

???

 

[JimSC]

Their is a bit of confusion over if it's magnetic force restoration . Cambridge environmental claims it is magnetic,just without the fast computing power of the fx 120 . I

according to the manufacturer it is not magnetic force restoration. bold added by me

SAN JOSE, Calif. – October 20, 2017 –For businesses looking to invest in balances, A&D Weighing recently announced its new larger-capacity, load cell-based EJ series provides the same levels of affordability, precision and functionality previously found only in balances using a high-sensitivity electromagnetic weight sensor.

In 2014, the company launch edits first 1-mg balances that employed a load cell as the weight sensor, the EJ-123 and EJ-303. They recently added two new 10-mg models with larger capacities, EJ-1202 and EJ-3002, to round out the series of compact precision balances. The high resolutions achieved with these balances (1/120,000 to 1/310,000) were previously only realized by electromagnetic force restoration (EFR), the method most commonly adopted for laboratory balances – including microbalances.

“The long-standing method of electromagnetic force restoration determines a mass from the amount of current required to generate the electromagnetic force on one side of a lever that equalizes with the mass placed on the other side,” said Terry Duesterhoeft, President and CEO of A&D Company in the Americas. “This resulted in a high degree of precision and accuracy. Today, however, our EJ series challenges the established edge EFR has always held in the industry, offering users a way to spend less without compromising on precision, and functionality as well.

https://andonline.com/news-and-even...-product-lines-that-answer-the-industry-query

 

[nmkid]

???

Humidity!!

 

[Jimmy James]

Worse here in NC. Powder clumps with humidity and sticks to everything without it.

 

[loud_noise]

I’m currently running chargemaster myself and seriously looking at the EJ-123 as an upgrade. So you guys are happy with it? Does the 100th of a grain measurement move much like a chargemaster?

 

[hikfromstik]

I’m currently running chargemaster myself and seriously looking at the EJ-123 as an upgrade. So you guys are happy with it? Does the 100th of a grain measurement move much like a chargemaster?

Not once its dialed in right . You'll need to calibrate it about once every week or two to really get the most out of it. It's very sensitive also . I breath to the side while weighing . I've literally left it on for days with the dust cover on and it'll still be on zero .

 

[rwj]

Humidity!!

Western PA ain’t much better... dehumidifier in the reloading room (basement) solves the problem. It’s turned off when the scale is turned on to prevent the fan breeze from effecting the scale.

 

[nmkid]

Western PA ain’t much better... dehumidifier in the reloading room (basement) solves the problem. It’s turned off when the scale is turned on to prevent the fan breeze from effecting the scale.

Hmmmm. Never gave that a thought. Thanks.

 

[rox]

if you keep your temp constant and keep the bubble level center it'll sit on zero for days

. I've literally left it on for days with the dust cover on and it'll still be on zero .

Usually these balances will hold zero for days because they have zero-tracking. Zero-tracking constantly homes-in on zero as long as the balance is within a few graduations of zero. Try leaving it for a period with a significant non-zero weight (anything over a grain should be fine). You may see significant drift - this is the true drift of the scale when not held in check by zero-tracking. Note that if drift or a disturbance takes it outside of the zero-tracking band for long enough then it can still lose zero. The FX-120i, for example has an adjustable zero tracking tolerance (from memory it's 1, 2 or 3 graduations i.e. 0.02, 0.04 or 0.06 grains).

This is why it's so important to allow the balance to 'see' zero regularly during your charging cycle. With typical throw and trickle-up workflows the balance will not see zero at all. For example: you have a powder pan weighing 100 grains and you zero the balance with the empty pan on the balance (so you see the charge weight on the display). You throw a charge of 45.7, place it on the balance then trickle-up to 46.0. In this process the balance never sees zero , i.e.

1) You place then pan on the balance with the thrown charge - balance reads 45.7.
2) You trickle up to 46.0 - balance reads 46.0.
3) You remove the pan to dump the charge - balance reads -100.0.
4) Got step 1.

 

[Jimmy James]

Mine has the choke already on the power cord. It is very temperature sensitive as to holding zero without drifting. It is very sensitive to draft. Use the draft shield. Mine will indicate stable with the 0 or O in the top left corner of screen but still typically count up 1 or 2 100ths. There is a delay when trickling that makes it not so great for trickling. I checked numerous throws from Chargemaster with the 123 and I was pleasantly surprised at the Chargemasters's "accuracy" with stick powder. I want to get an Omega trickler for BR loads but with 1000yd ringing steel loads, I'll just use the Chargemaster. I can leave mine on over night zeroed and check in the a.m. and it will still be zero.

 

[hikfromstik]

Usually these balances will hold zero for days because they have zero-tracking. Zero-tracking constantly homes-in on zero as long as the balance is within a few graduations of zero. Try leaving it for a period with a significant non-zero weight (anything over a grain should be fine). You may see significant drift - this is the true drift of the scale when not held in check by zero-tracking. Note that if drift or a disturbance takes it outside of the zero-tracking band for long enough then it can still lose zero. The FX-120i, for example has an adjustable zero tracking tolerance (from memory it's 1, 2 or 3 graduations i.e. 0.02, 0.04 or 0.06 grains).

This is why it's so important to allow the balance to 'see' zero regularly during your charging cycle. With typical throw and trickle-up workflows the balance will not see zero at all. For example: you have a powder pan weighing 100 grains and you zero the balance with the empty pan on the balance (so you see the charge weight on the display). You throw a charge of 45.7, place it on the balance then trickle-up to 46.0. In this process the balance never sees zero , i.e.

1) You place then pan on the balance with the thrown charge - balance reads 45.7.
2) You trickle up to 46.0 - balance reads 46.0.
3) You remove the pan to dump the charge - balance reads -100.0.
4) Got step 1.

That's great advice. All I've been doing is making sure the zero and pan lift numbers are consistent pour to pour then I'll rezero it every five or so pours . It is a hair slow ,but for the price it's perfect for what I'm doing . I had very good luck with mine so far . Every varget kernal weighs .02 with it . I also found putting a rubber mat under it helps

 

[JimSC]

Now I have to order a trickler, something that has been missing from my loading bench. Never felt the need with the Chargemaster.

A clean empty yogurt container and the Mark-1 Mod-0 fingers make for the best trickler that can be had. I had been trickling up to weight for months and was about to buy a Omega before I discovered that with your fingers it very easy to drop 1 or 2 kernals