Measuring instrument specifications Fundamental MCQ

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With series of practice tests containing Multiple Choice Questions Quiz, this Quiz will build your confidence by providing tips and trick to solve questions ( Answer with explanation where required).

*************What You Will Learn****************************

This Practice test provides the baseline information you need to interpret and explain the specifications provided in product data sheet (PDS). The important questions, Answers with explanations are organized for :

The importance of specifications

• What is instrument specifications

• Categories of instrument specifications

• Correctly interpreting specifications

• Importance and function of product data sheets (PDSs) and of instrument data sheets

Physical specifications

• What is physical specifications

• How physical specifications may impact instrument selection such as:

1. Construction materials (wetted and nonwetted parts)

2. Process/electrical connections

3. Size/weight

• Mounting and fill fluid considerations for vacuum service

Functional specifications

Learning:

• What is functional specifications

• What is span upper range limit (URL), lower range limit (LRL), upper range value (URV), and lower range value (LRV)

• Rangeability and turndown, Minimum span, Maximum span, Maximum turndown

• Effects of process and ambient temperature on instrument function

• line pressure limit, overpressure limit, proof/burst pressure

• Environmental limit considerations

• How electrical factors may impact instrument selection.

• Output signal options for two-wire, three-wire, and four-wire transmitters

• Function of a failure mode alarm

Performance specifications

Learning:

❑ Reference accuracy and reference conditions

• Zero error,  Span error, Total error,  Turndown error, Systematic error

❑ How following can impact total performance, stability performance, and/or dynamic response performance:

• Ambient temperature effect

• Line pressure effect

• Vibration effect

• Power supply effect

• RFI/EMI effect

• Mounting position effect

• Load effect

• Overpressure effect

❑ Learning importance of the terms :

• Linearity

• Hysteresis

• Repeatability

❑ Importance of stability

Approvals and certifications

❑ Hazardous area Classification, groups and zones

❑ IPAL & ATEX, NEMA and IEC enclosure ratings

❑ Ignition sources and combustible materials

❑ Protection methods

❑ Purpose and benefits of an intrinsically safe installation

❑ Use references to find material classifications for a given substance

❑ Protection and agency codes associated with the instruments

❑ IInstallation practices for CENELEC and FM explosion-proof installations

❑ NEC guidelines to follow for explosion-proof, intrinsically safe, and sealing applications

LEARNING OBJECTIVE

After completing this Practice test, you will be able to use instrument specifications to choose a process measurement solution that is efficient, accurate, and serviceable for the application in which it will be used.

***** I Hope you will Enjoy Learning & find Quiz very useful. *****************

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