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Chapter 5: Legal for Trade
The Model 672 default parameter setup does not ensure compliance with legal-for-trade installations as
mandated by local weights and measures authorities. This chapter contains information on NTEP and
OIML regulations, sealing and audit trails, and other requirements.
Since legal-for-trade requirements may vary, you must ensure that the Model 672 installed in accordance
with all local regulations.
NTEP REQUIREMENTS
The National Type Evaluation Program (NTEP) is a widely accepted weights and measures standard in the
United States, with most states abiding by some or all of the NTEP requirements. A complete list of these
regulations is available in the “Handbook 44” publication distributed by the National Institute of Standards
and Technology (NIST). For more information, call (301) 975-3058, or visit http://www.nist.gov.
The Model 672 NTEP Certificate of Conformance (C.O.C.) is 05-023A1.
In order to configure the Model 672 to comply with NTEP requirements, parameter P440 (NTEP) must be
enabled. This ensures the following:
• Serial data will not be received while in the Setup Mode.
• Weight values that exceed the minimum width specified at P240 will be transmitted as
dashes “-------“.
• Pressing
: with a gross weight of zero (0) pressing 0 : will not automatically
switch to the net mode.
• Printing using the
= key is only possible from the gross, net or quantity mode.
• Numeric tare entries cannot be received through the serial port.
• Pressing
: with a gross weight of zero (0) will not automatically switch to the net
mode.
• Negative tare values are not accepted regardless of the selection for the “Negative Tare
Enable” parameter (P162).
• Tare values are automatically rounded regardless of the selection for the “Tare Rounding
Enable” parameter (P163).
• Accumulations using the
I method can only be performed from the gross, net or
quantity mode.
Where applicable, enabling the restrict parameter will over-ride the current setting of other parameters.
If the counting feature is enabled, NTEP requires a label on the front of the Model 672 stating “The
counting feature is not legal for trade”. See Other Requirements on page 35 for other application
specific considerations.
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