|
State
|
ScaleUsed
|
Readability
|
Std Dev
|
Standards
|
Facility Procedures
|
WC Comments
|
| AZ |
5000 lb Load Cell & 3000 lb Load Cell |
0.1 lb & 0.01 lb |
0.12 lb & 0.013 lb |
Combination of 2500 & 1000 lb standards |
All carts are tested on a hoist/gantry using a Modified Substitution |
Arizona - (No Comments) |
| CA |
2500 lb Load Cell Comparator (Schoonover/Frazier) |
0.001 lb |
0.05 lb |
2500 lb cast block (special calibration to 0.1 lb) |
|
California - Yes, we are pushing the limit of F Class for the carts. Maximum load for each cart including weight of cart is 20,000 lb. Tests were conducted to define the hydraulic oil level to +/- 0.1 inch and reference on temp of 72 +/- 3 F for the wei |
| CT |
Cardinal Scale 10,000 lb capacity |
2 lb |
|
working standards |
Private Scrap Dealer |
Connecticut - Use a modified substitution design using the break point of scale by adding error weights. Class F weights are used as the standards with known values and placed on scale. This repeated a few times, then error weights are added until break |
| FL |
Rice Lake with sensitronic load cell |
0.1 lb |
0.04 lb |
Calibrated Cast Iron Weights |
An average of at least 3 double substitutions |
Florida - A Rice Lake readout modified to read to 0.1 lb is used with a sensitronic load cell. The process standard deviation is 0.04 lb. Calibrated cast iron weights are used as standards. An average of at least 3 double substitutions (SOP4) is used t |
| GA |
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Georgia - We do not test, but have 5 in operation on state trucks. Also, we have 3 or 4 owned by scale companies. We send ours to Florida. |
| ID |
Russell Equal Arm |
|
0.0087 lb |
Lab Standards |
SOP8 in Large Mass Room |
Idaho - (No Comments) |
| IL |
Frazier-Schoonover |
0.001 lb |
0.006 lb |
3-1000 lb; 2-500 lb; 2-2500 lb; 2-50 lb. |
Facilities and procedures in accordance with NIST 143 and 145. |
Illinois - The listed weight carts were done in 1998. In the past I have had a few electric ones and a few custom made ones. Have submitted comments to Georgia on previous HB comments. Necessary evils-Scale inspectors love them and we have had no probl |
| IN |
Fairbanks 23-2161 10,000 lb capacity beam with secondary pointer |
0.5 lb |
|
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Indiana - 1-Carts should be driven into lab under their own power, to avoid drive train damage. 2-Carts must have smooth (non-treaded) tires. 3-Carts must have visual sight guage suitable for marking upper and lower fuel levels limits as well as calibra |
| MD |
Fairbanks Floor Scale (mechanical) Model 50-5501 SP 40,000 lb capacity |
0.01 lb |
0.035 lb @ 10,000 lb |
Summations of 1000 lb and 500 lb |
Double substitution weighing design, weights calibrated annually |
Maryland - Weight carts are always adjusted to nominal weight. |
| MI |
Mettler-Toledo KG3000 5000lb capacity |
0.01 lb |
0.07 lb |
5-1000lb cast iron weights calibrated against WS on Mettler KC500 |
Carts are calibrated in our temperature & humidity controlled large mass lab. Weights moved with 6-way, variable speed crane. Carts calibrated using SOP 4. Two 2500 lb wts used as a check standard. |
Michigan - (No Comments) |
| MN |
Russell 5000 Balance |
0.001 lb |
0.01 lb |
|
Large Mass single substitution |
Minnesota - Also uses Master Scale: reads to 0.1 lb std dev = 0.1 lb at a Track Scale House using two single substitutions. (Also provided "as found" and "as left" values for about three years.) |
| MO |
Frazier-Schoonover 5000 lb capacity mass comparator with strip chart recorder |
Digital 0.1 lb & Strip Chart 0.005 lb(interpolation) |
0.1 lb |
3 to 5 1000 lb cast working standards |
Comparator is positioned with 5 ton capacity overhead crane on rail. |
Missouri - (No Comments) |
| MS |
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Mississippi - (No weight carts listed and no comments) |
| MT |
Russell/Frazier |
|
Unc= 0.0052lb (k=2) |
|
Single Subs |
Montana - Use Carts as Field Standards |
| NC |
Mettler KG3000 with ID1+ indicator |
|
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|
North Carolina - Mettler KG3000 Scale with ID1+ indicator with two pieces of 15 inch channel iron to extend the deck. We use a series of modified subs consisting of taring off the standard, weighing the cart, rotating the cart 180o, weighing it again (to |
| NE |
Furnished by Scale Company |
count mode |
|
working standards |
modified substitution |
Nebraska - Scale is furnished by service company. Scale is put into a "count" mode to get a smaller division size. Lab working standards are used. Modified sub is used. Cart is adjusted to as close to zero error as possible. No certificate is issued, |
| NJ |
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New Jersey - (No Carts Listed, No Comments) |
| NM |
Russell Balance & Electroni low profile scale 10000 lb cap |
0.002 |
|
Working Stds & Fresh Cal'ed Field Standards |
H-145 |
New Mexico - The 2000 & 2500 lb carts are tested in the lab on Russell Bal & can read 0.002 lb easily. Working standards used & H145 followed. The 3500 lb carts can not get into lab. An electronic low-profile scale (10,000 lb cap) is used. Test wts (f |
| NV |
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Nevada - (No Carts listed, No Comments) |
| NY |
3000 lb Load Cell and calibrate it in the count mode. Russell Balance for 2500lb |
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The load cell is attached to an overhead crane and we lift the standard and the weight cart using modified substitution. |
New York - (No Comments) |
| OH |
Custom made floor scale with a Toledo 8140 readout and load cells by Artech Industries 2500 lb capacity. |
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Ohio - (No Comments) |
| OK |
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Oklahoma - Does not test weight carts |
| OR |
Fairbanks dormant beam scale, 10,000 lb x 1 lb w/ turning point reader |
1 lb |
0.069 lb |
2,000 lb; 1,000 lb; 500 lb; working standards |
Large shop area with 6,000 lb crane and 2,000 lb fork lift. Single Substitution. |
Oregon - All of the Oregon Department of Agriculture's weight carts, except the 5,000 lb cart, have treaded tires which are required for livestock scales and some portable gravel pit truck scales. The 5,000 lb cart has only two axles and was designed to |
| PA |
Mettler KE2000 2500kg by 1g |
1 g |
13 g |
3000 lb; 2500 lb; 1000 lb; 500 lb |
Large Mass Lab; modified substitution |
Pennsylvania - 3 axle carts are longer than scale deck. Use 2-8'x10"x2" oak planks to extend scale base. Experience some off-center loading problems, but not major (0-100g). |
| SD |
Hottinger Baldwin DK38 - Digital Mass Comparator |
0.01 lb |
0.0025 mg (??lb??) |
Shop standards traceable to primary standards |
modified substitution |
South Dakota - (No Cart Comments) |
| TN |
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Tennessee - (No Carts listed & No Comments) |
| TX |
Eaton UMC600ACBC with Revere Transducer 363-B10-5K-20Pl load cell |
0.1 lb |
0.172 lb |
|
Zero Shift Method |
Texas - Looking into 15K load cell. Need to require calibrated scale to be mounted next to gas tank sight gauge. Like State of Oregon has. |
| UT |
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Utah - (No Carts listed, No Comments) |
| VA |
HBM - Hottinger Baldwin Measurements |
0.01 lb |
0.02 lb |
|
Modified Substitution, at Virginia Department of Transportation Facility |
Virginia - (No Comments) |
| VT |
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Vermont - Why? Do states use carts as known weight? No Way! |
| WA |
Cardinal-Murphy in-floor 6'x8' platform, 5000 lb capacity. I just converted this scale using a Rice Lake RL20000A-150 Load Cell and a Fairbanks 2300 indicator. |
0.05 lb |
?? |
|
The scale is located inside a large enclosed bar area. |
Washington - (No Comments) |
| WY |
Russell Balance |
0.01 lb |
|
Lab Working Standards - 500lb, 1000lb, 2500lb, and 3000lb. |
3 ton universal hoist (any location in the room). Transposition |
Wyoming - (No Comments) |
