CST NIST Handbook 44 Standards 2

Question 1

According to NIST HB 44, what is the maximum allowable difference between the zero-load reference value and the zero reading after a weighing operation?

Accepted Answer

One-fourth the value of the smallest division

Answer

NIST HB 44 requires that zero-load balance be maintained within one-fourth of a scale division for most commercial weighing devices.

Question 2

Under NIST HB 44, which of the following is classified as a 'Type III' weighing system?

Accepted Answer

A crane scale or hanging scale

Answer

NIST HB 44 classifies crane (hanging) scales as Type III devices, which have specific tolerance and performance requirements.

Question 3

What does the abbreviation 'MWC' stand for in NIST HB 44 scale specifications?

Accepted Answer

Maximum Weighing Capacity

Answer

MWC stands for Maximum Weighing Capacity, the greatest load a device is designed to measure under normal operating conditions.

Question 4

Which NIST HB 44 requirement applies to the 'shift test' performed on a platform scale?

Accepted Answer

Place the load sequentially in each quadrant and record variations

Answer

The shift test requires placing the test load sequentially in each quadrant (or section) of the platform to verify that off-center loads produce readings within tolerance.

Question 5

NIST HB 44 defines 'maintenance tolerance' as:

Accepted Answer

The tolerance that in-service devices must not exceed during field inspection

Answer

Maintenance tolerances in NIST HB 44 are the wider tolerances applied to devices already in commercial service during routine weights and measures inspections.

(CST) Certified Scale Technicians Practice Test

(CST) Certified Scale Technicians Practice Test

CST NIST Handbook 44 Standards 2