why do you need the 100 and 200 calibration weights? Just the 100 should be fine usually
2015819
The reason is greater accuracy. You may get (very small) differences in measurements by not using the weights correctly. For items under 100 you should use the 100 calibration weight; over 100 use the 200.
2015820
Hi,This scale is made so you can use a 100g cal weight OR a 200g cal weight. So either weight will work EZSELL
2015821
From the owner's manual:IX. Calibration Adjustment 1. Press the ON/OFF key to turn the scale on. 2. Press and hold the MODE key for three seconds until the display shows "CAL" then release. 3. Press the MODE key again, and the LCD will flash the first calibration weight. Place the required weight on the middle of the platform 4. The LCD will flash then flash the second required calibration weight. Place the required calibration weight on the middle of the platform. Skip this step for model ACP-500. 5. The LCD will display "PASS" and return to normal weighing mode. Calibration is complete!According to the manual, you will need both weights. From the owner's manual:IX. Calibration Adjustment 1. Press the ON/OFF key to turn the scale on. 2. Press and hold the MODE key for three seconds until the display shows "CAL" then release. 3. Press the MODE key again, and the LCD will flash the first calibration weight. Place the required weight on the middle of the platform 4. The LCD will flash then flash the second required calibration weight. Place the required calibration weight on the middle of the platform. Skip this step for model ACP-500. 5. The LCD will display "PASS"... » Read More From the owner's manual:IX. Calibration Adjustment 1. Press the ON/OFF key to turn the scale on. 2. Press and hold the MODE key for three seconds until the display shows "CAL" then release. 3. Press the MODE key again, and the LCD will flash the first calibration weight. Place the required weight on the middle of the platform 4. The LCD will flash then flash the second required calibration weight. Place the required calibration weight on the middle of the platform. Skip this step for model ACP-500. 5. The LCD will display "PASS" and return to normal weighing mode. Calibration is complete!According to the manual, you will need both weights. « Show Less
2015822
I received model ACPro-200. It only required the 200 calibration weight. The calibration process never asked for the 100 calibration weight. I noticed in the reviews that AWS must have updated their hardware sometime in 2015, as many of those reviewers also state that their system never asked for the 100 calibration weight, only the 200. Save $5 and skip the 100 calibration weight.
2015823
From the owner's manual: IX. Calibration Adjustment 1. Press the ON/OFF key to turn the scale on. 2. Press and hold the MODE key for three seconds until the display shows "CAL" then release. 3. Press the MODE key again, and the LCD will flash the first calibration weight. Place the required weight on the middle of the platform 4. The LCD will flash then flash the second required calibration weight. Place the required calibration weight on the middle of the platform. Skip this step for model ACP-500. 5. The LCD will display "PASS" and return to normal weighing mode. Calibration is complete! According to the manual, you will need both weights.
2015824
It may use a 2 point calibration to derive a regression line, which would be more accurate than a single point calibration.
2015825
During the calibration procedure it only asked for the 200 gram weight, not the 100 gram one, so I don't know what others are talking about. BTW, I spent a bunch of time calibrating this down to .01, only to realize that it will vary depending where on the scale platform you place the idem being weighed, so it's kind of a waste of time.
1313539
Get the calibration weights. They are an absolute MUST with inexpensive scales. This one is pretty accurate. I reweighed the same mass 5 times and got the same reading each time.
1153535
No you don't need to use them. We have had our scale for over 2 years and have never used them. The purpose of the weights, my understanding anyway, is for weighing objects over 350 lbs. They are used for multipliers to go beyond the 350 limit of the scales. Hope this helps
1528191
No special calibration is needed. As far as what tools to use, there should be instructions with your kit about the installation process.
1362387
200 is more versatile. Nothing at all wrong with thee 100, but the 200 does provide more options.
450340
Mine did not come with a calibration weight. Whether you need a calibration weight, depends on your use for it. I make coffee in the morning with it and measure out the grams of coffee I want as well as the oz of water I need for it. I trust it has been pre calibrated correctly. But then again I'm only making coffee.
195306
Hi dhc, No, the basic weight calibration cannot be altered. However, with this scale, once you set up your user profile, it will take your initial weight. You can set up the scale to go into what is called "Weightless" mode. This means that instead of your actual weight, it will show you +2, -4, etc from your initial weigh in. If you have any other questions or would like clarification on Weightless mode, feel free to contact us at info@greatergoods.com or call us at 866.991.8494 from 9 am - 5 pm central time. Thanks, Nick
2003979
If you look at the face of the scale it says it weighs to 100g (grams). It is strange that it would calibrate at the far end of its range though rather than somewhere near the middle.
1748104
We only do regulars but see no reason why you cannot do 100s. You just have to get the right wraps. The machine is surprisingly easy to use!
897280
There is no longer a need for calibration strip, all are labeled Lot #45001. The box I got states "no coding needed"
43471
I think the only that works is a 1kg weight. I bought one at the time I bought the scale and it works. American Weigh Scales 1KGWGT Calibration Weight Scale, 1000gm Capacity
1640772
Yes it can be re-calibrated if necessary. When I do it the scale asks for a 1000.0 g weight. I don't have any so I just check it with the smaller weight set I have. You can buy the weight on ebay for 17 USD or so. Wish they stated this in the product description. Good luck. Joe
523845
I think the 120 is more accurate. I do like them and they did great for what i needed.
1892993
Its always best to calibrate to a known weight. I did not have any known weights, so I calibrated it to zero (ie no weight). For my purposes, this was sufficient.
860950
I didn't need to calibrate. I did test it on 3 items that I knew the exact weight of and it was right on each time.
1017549
I contacted the company before i bought the 3000g and you do in fact need a 2kg calibration weight
65008
I've never tried it, but have you checked with the USPS to see if they have any calibration weights on site? I'm sure their scales, like all scales, have to be calibrated regularly. You could take it to them and see what they say. I live in a rural area and the local branch is never very busy, so I'm sure they would help me. A busier location may not be as helpful.