PROCESS MEASUREMENT AND CONTROL DEVICES - GENERAL METHODS AND PROCEDURES FOR EVALUATING PERFORMANCE - PART 2: TESTS UNDER REFERENCE CONDITIONS
International Electrotechnical Committee
FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 Accuracy related factors
4.1 Test procedures and precautions
4.1.1 Selection of ranges for test
4.1.2 Preconditioning cycles
4.1.3 Number of measurement cycles and test points
4.1.4 Additional tests where digital inputs and outputs
are provided
4.1.5 Measurement procedure
4.1.6 Processing of the measured values
4.1.7 Determination of accuracy related factors
4.1.8 Presentation of the results
4.2 Specific testing procedures and precautions for the
determination of dead band
4.2.1 Selection of ranges for test and preconditioning
4.2.2 Measurement procedure
4.2.3 Presentation of the results
5 Dynamic behaviour
5.1 General considerations
5.2 General testing procedures and precautions
5.3 Frequency response
5.4 Step response
6 Functional characteristic
6.1 General
6.2 Input resistance of an electrical device
6.3 Insulation of electrical devices
6.3.1 General considerations
6.3.2 Insulation resistance
6.3.3 Dielectric strength
6.4 Power consumption
6.4.1 Electrical power consumption
6.4.2 Air consumption
6.5 Output ripple of a device with an electrical d.c. output
6.6 Air flow characteristics of a pneumatic device
6.6.1 Initial setting up
6.6.2 Delivered flow Q[1]
6.6.3 Exhausted flow Q[2]
6.6.4 Data presentation
6.7 Limits of adjustments of lower range value and span
6.8 Switching differential
7 Drift
7.1 Start-up drift
7.2 Long-term drift
Specifies general methods and procedures for conducting tests and reporting on the functional and performance characteristics of process measurement and control devices.
| Document Type | Standard |
| Status | Current |
| Publisher | International Electrotechnical Committee |
| Committee | TC 65 |
