Certificate Number: 96-092A5 Page 1 of 3 1135 M ... - Mettler Toledo

Certificate Number: 96-092A5
Page 1 of 3
For:
Weighing/Load Receiving Element
Vehicle Scale, Modular design, Load Cell Electronic
Model: 7563, VTS311
n max : 10 000
e min : 20 lb
Capacity: 120 000 to 400 000
CLC: Up to 100 000 lb
Accuracy Class: III L
Submitted By:
Mettler-Toledo, LLC
1150 Dearborn Drive
Worthington, OH 43085
Tel: 614-438-4393
Fax: 614-438-4355
Contact: Scott Davidson
Email: scott.davidson@mt.com
Web site: www.mt.com
Standard Features and Options
Installations must satisfy the relationship of v min d/N (d = division size and N= number of load cells) and nominal capacity
CLC x (N - 0.5), where N is the number of sections in the scale.
The relationship of the value for the load cell verification interval (v min ) to the scale division (e) for a specific scale
installation shall be: v min e N (where N is the number of load cells in the scale)
Note: On a side-by-side installation such as this, where the two weighing elements that make up the system are not mechanically
connected together, the number of sections is the total number of sections on both weighing elements.
Increased platform areas and lengths for scales with two or more modules are not restricted as long as the width complies with the
parameters below and the load cells meet the v min formula.
Additional modules to increase length must be of the same type as those used in the device submitted for evaluation.
Range of Module Lengths: 8.5 feet to 24 feet
Scale Deck Type: Steel or Concrete
Range of Module Widths: 7 feet to 12 feet
Scale Pit Type: Pit or Above Ground Installation
Maximum capacity for single width scales is 200 000 lb
Maximum capacity for double width scales is 400 000 lb. These will consist of 2 independent platforms installed side by side and
will function as a complete scale for weighing large off road vehicles.
Load Cells Used:
Mettler-Toledo Model 760 (NTEP CC No. 88-091), Model SLC820 (NTEP CC No. 08-090) or other NTEP certified metrologically
equivalent.
Temperature Range: -10 ºC to 40 ºC (14 ºF to 104 ºF)
This device was evaluated under the National Type Evaluation Program and was found to comply with the applicable technical requirements of "NIST Handbook 44:
Specifications, Tolerances and Other Technical Requirements for Weighing and Measuring Devices." Evaluation results and device characteristics necessary for
inspection and use in commerce are on the following pages.
Stephen Benjamin
Chairman, NCWM, Inc.
Kurt Floren
Chairman, National Type Evaluation Program Committee
Issued: February 8, 2013
1135 M Street, Suite 110 / Lincoln, Nebraska 68508
The National Conference on Weights and Measures (NCWM) does not approve, recommend or endorse any proprietary product or material, either as a single item or as
a class or group. Results shall not be used in advertising or sales promotion to indicate explicit or implicit endorsement of the product or material by the NCWM.

Certificate Number: 96-092A5
Page 2 of 3
Mettler-Toledo, LLC
Weighing/Load Receiving Element / 7563, VTS311
Application: For use in general purpose weighing of vehicles.
Identification: The required information is located on a metal identification badge that is riveted to the side of the gap cover support
bar located at section two (2) of scale deck.
Sealing: The load cell junction box contains no adjustments for sections or cells. All metrological functions are done through the
indicator.
Test Conditions: This certificate supersedes Certificate of Conformance Number 96-092A4 and is issued to add model name
VTS311. The model VTS311 is metrological equivalent to the existing model listed on the certificate. Also added the load cell model
SLC820 (NTEP CC No. 08-090) in the Standard Features and Option Box. No additional testing was deemed necessary. Previous test
conditions are listed below for reference.
Certificate of Conformance Number 96-092A4: This Certificate is issued without testing to include the CLC in the "For" box,
which was inadvertently omitted from revision 96-092A3. Wording was also changed in the test conditions section under CC 96-
092A2 to clarify the determination of the number of sections for this type of side-by-side configuration vehicle scales. An example
picture of the device has also been added to the certificate.
Certificate of Conformance Number 96-092A3: This certificate supersedes Certificate of Conformance number 96-092A2 and is
issued to increase the CLC from 80 000 lb to 100 000 lb and to extend module length to 24 feet. The system capacity was 200 000 lb,
90' x 11' concrete deck. The scale was initially tested using 104 000 lb of known test weights. 90 000 lb was used to conduct the CLC
shift test, and a strain load test was conducted to 196 740 lb, using 104 000 lb of known test weights. Increasing/decreasing load tests
and shift tests were conducted using the 104 000 lb known test weights. The scale was used for over 90 days, with the minimum use
criteria required by NTEP, then tested again. The increasing/decreasing load, and mid span tests were repeated using 50 000 lb known
test weights. Strain load tests were again conducted to a load of 143 000 lb.
Certificate of Conformance Number 96-092A2: This Certificate is issued without testing to correct the CLC covered for the model
7563 Vehicle Scale. The reference to a 160 000 lb CLC for side-by-side installations was determined to be inappropriate and removed.
An explanatory note to explain determination of the number of sections when the scale is side-by-side and not mechanically connected
together was added in the "Standard Features and Options" box.
Certificate of Conformance Number 96-092A1: This certificate supersedes and replaces Certificate of Conformance number 96-092
and is issued to include a double wide scale configuration. The emphasis of the evaluation was on the design and performance of the
double wide weighing element. Two four module (17.5' per module), 200 000 lb, 70' x 7' (steel deck and above ground installation),
80 000 lb CLC scales, installed side by side with a 2' concrete divider between the platforms were interfaced with a Mettler-Toledo
Model 8530 Indicator (Certificate of Conformance number 88-259) for the evaluation. The system capacity was 400 000 lb and the
CLC was 160 000 lb. The scale was initially tested using 146 500 lb of known test weights. Increasing/decreasing load tests and shift
tests were conducted using the 146 500 lb known test weights. The 146 500 lb was also used to conduct mid span tests. Strain load
tests were conducted using 146 000 lb of known test weights to a maximum load of 321 600 lb. Several tests were conducted using a
large off road vehicle loaded to 170 650 lb to establish repeatability. The field permanence test was waived due to the prior testing
performed on the individual components of the scale system.
Certificate of Conformance Number 96-096: The emphasis of the evaluation was on the design, marking, and performance of the
weighing element. A four module (17.5' per module), 200 000 lb x 20 lb, 70' x 10' (steel deck and pit installation), 80 000 lb CLC
scale was interfaced with a Mettler-Toledo Model 8530 Indicator (Certificate of Conformance number 88-259) for the evaluation. The
scale was initially tested using 74 000 lb of known test weights. Increasing/decreasing load tests and shift tests were conducted using
the 74 000 lb known test weights. The 74 000 lb was also used to conduct mid span tests. Strain load tests were conducted using 74
000 lb known test weights to a maximum load of 164 280 lb. The scale was used for over 40 days, with the minimum use criteria
required by NTEP, then tested again. The increasing/decreasing load, shift, and mid span tests were repeated using 43 000 lb known
test weights. Strain load tests were again conducted to a maximum load of 129 240 lb.
Evaluated By: A. McCoy (OH) 96-092; W.West, M.Kelley, P. O’Connor, P. Cawood (OH) 96-092A1; T. Davis (KS) 96-092A3

Certificate Number: 96-092A5
Page 3 of 3
Mettler-Toledo, LLC
Weighing/Load Receiving Element / 7563, VTS311
Type Evaluation Criteria Used: NIST, Handbook 44: Specifications, Tolerances and Other Technical Requirements for Weighing
and Measuring Devices, 2004. NCWM, Publication 14: Weighing Devices, 2004.
Conclusion: The results of the evaluation and information provided by the manufacturer indicate the device complies with applicable
requirements.
Information Reviewed By: W. West (OH), 96-092A2, S. Patoray (NCWM) 96-092A2, 96-092A3; J. Truex (NCWM) 96-092A4, 96-
092A5
Example of Device: