CWT Weighing System Installation & Verification 2

Question 1

What does a 'shift test' or 'corner loading test' evaluate on a platform scale?

Accepted Answer

The uniformity of weight indication when a test load is placed at different positions on the platform

Answer

The maximum safe capacity at the geometric center of the platform

Answer

The zero-return performance after the heaviest load is removed

Answer

The linearity of the indicator over the full weighing range

Question 2

During official scale verification, what is the significance of the 'tolerance' value assigned to a weighing device?

Accepted Answer

The maximum permissible error the scale may exhibit and still pass verification

Answer

The minimum test weight mass required to perform the test

Answer

The maximum time allowed for the reading to stabilize after loading

Answer

The maximum rated capacity the scale may be used for commercially

Question 3

What qualification must test weights used for official scale verification possess?

Accepted Answer

They must be calibrated and traceable to NIST with documented uncertainty

Answer

They must be manufactured by the scale manufacturer

Answer

They must equal the full capacity of the scale being tested

Answer

They must be stainless steel and stamped with the current year

Question 4

What does NTEP (National Type Evaluation Program) approval indicate for a commercial weighing device?

Accepted Answer

The device design has been evaluated and found suitable for commercial weighing applications in the US

Answer

The device has been certified for use in nuclear or radiation environments

Answer

The device passed noise and temperature exposure protocol testing only

Answer

The device is approved for export to all foreign countries

Question 5

What does a 'repeatability test' verify during scale verification?

Accepted Answer

That the scale consistently returns the same reading when the same load is applied multiple times

Answer

That the scale displays a different value on each successive weighing of the same load

Answer

That the scale can weigh multiple items simultaneously without interference

Answer

That the zero display resets automatically between successive weighings

Question 6

How many test positions are typically used when performing a shift (section) test on a rectangular platform scale?

Accepted Answer

5 positions — four quadrant centers and the geometric center

Answer

2 positions — front and rear thirds only

Answer

3 positions — left edge, center, and right edge

Answer

8 positions — one directly over each load cell

Question 7

What official action must a weights and measures inspector take after a commercial weighing device successfully passes verification?

Accepted Answer

Apply an official seal, security tag, or certificate of conformance authorizing commercial use

Answer

Issue the manufacturer's warranty extension certificate

Answer

Submit the device for ISO 9001 certification review

Answer

File an OSHA safety compliance report with the state agency