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GB/T 18271.3-2017 English PDF (GBT18271.3-2017)

GB/T 18271.3-2017 English PDF (GBT18271.3-2017)

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GB/T 18271.3-2017: Process measurement and control devices -- General methods and procedures for evaluating performance -- Part 3: Tests for the effects of influence quantities

GB/T 18271.3-2017
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 25.040.40
N 10
GB/T 18271.3-2017 / IEC 61298-3:2008
Replacing GB/T 18271.3-2000
Process measurement and control devices - General
methods and procedures for evaluating performance -
Part 3: Tests for the effects of influence quantities
(IEC 61298-3:2008, IDT)
ISSUED ON: JULY 12, 2017
IMPLEMENTED ON: FEBRUARY 01, 2018
Issued by: General Administration of Quality Supervision, Inspection and Quarantine of the PRC;
Standardization Administration of the PRC.
Table of Contents
Foreword ... 4
1 Scope ... 8
2 Normative references ... 8
3 Terms and definitions ... 10
4 General considerations ... 12
4.1 Criteria ... 12
4.2 General procedures ... 12
4.3 General EMC requirements ... 13
5 Ambient temperature effects ... 14
5.1 Criteria ... 14
5.2 Test procedure ... 14
6 Ambient relative humidity effects ... 15
7 Vibration ... 16
7.1 General considerations ... 16
7.2 Initial resonance search ... 18
7.3 Endurance conditioning by sweeping ... 18
7.4 Final resonance search ... 18
7.5 Final measurements ... 18
8 Shock, drop and topple ... 19
9 Mounting position ... 19
10 Over-range ... 20
11 Output load effects ... 20
11.1 Electrical output ... 20
11.2 Pneumatic output ... 21
12 Power supply ... 21
12.1 Supply voltage and frequency variations ... 21
12.2 Transient supply voltage effects ... 22
12.3 Supply voltage depression ... 22
12.4 Short-term supply voltage interruptions ... 23
12.5 Fast transient/burst immunity requirements ... 24
12.6 Surge immunity requirements ... 25
12.7 Reverse supply voltage protection (d.c. devices) ... 25
12.8 Supply pressure variations ... 25
12.9 Supply pressure interruptions ... 26
12.10 Conducted radio frequency requirements ... 26
13 Electrical interference ... 27
13.1 Common mode interference ... 27
13.2 Series mode interference ... 27
13.3 Earthing ... 27
14 Harmonic distortion effects ... 27
15 Magnetic field effects ... 28
16 Electromagnetic field immunity test ... 30
17 Electrostatic discharge ... 31
18 Effect of open-circuited and short-circuited input ... 32
19 Effect of open-circuited and short-circuited output ... 33
20 Effects of process medium conditions ... 33
20.1 Temperature of process fluid ... 33
20.2 Flow of process fluid through the device ... 33
20.3 Static line pressure effect ... 34
21 Atmospheric pressure effects ... 35
22 Flow of purge gas through the device ... 35
23 Accelerated operational life test ... 35
24 Operational long-term drift test (optional) ... 36
Bibliography ... 38
Foreword
GB/T 18271 "Process measurement and control devices - General methods
and procedures for evaluating performance" is currently planned to be issued as follows:
- Part 1: General considerations;
- Part 2: Tests under reference conditions;
- Part 3: Tests for the effects of influence quantities;
- Part 4: Evaluation report content.
This Part is Part 3 of GB/T 18271.
This Part is drafted in accordance with the rules given in GB/T 1.1-2009. This Part replaces GB/T 18271.3-2000 "Process measurement and control
devices - General methods and procedures for evaluating performance - Part 3: Tests for the effects of influence quantities". Compared with GB/T 18271.3- 2000, the main technical changes of this Part are as follows:
- UPDATE normative references (see Clause 2; Clause 2 of the 2000 edition); - Delete the term "device under test" and definition (see 3.1 of the 2000 edition);
- ADD the term "type test" and definition (see 3.8);
- ADD the requirement that “A test is only to be performed if it is applicable to the Device Under Test (DUT). If the specification of the DUT states limits for the influence considered, these limits shall be noted and respected” (see 4.1);
- ADD general requirements for electromagnetic compatibility test (see 4.3); - Modify the temperature range, temperature class, and typical service
application in Table 1 "Ambient temperature test ranges" and add a note (see Table 1; Table 1 of the 2000 edition);
- Modify the typical application and the parameter of vibration levels in Table 2 "Vibration test levels" (see Table 2; Table 2 of the 2000 edition);
- Modify the test voltage and frequency values in "Supply voltage and
frequency variations" (see 12.1; 12.1 of the 2000 edition);
- In "Short-term supply voltage interruptions", delete the requirements that "The a.c. power supply unit shall be interrupted for 1, 5, 10, and 25 cycle durations at the crossover point" and "In addition, random interruptions can also be used for at least 10 times each duration"; CHANGE to the provision that the tests shall be according to the requirements of 4.3; and, add the test parameters of power supply commutations-interruptions (see 4.3; 12.4 of the 2000 edition);
- Modify "Fast transient/burst immunity" test requirements; ADD the provision that the tests shall be according to the requirements of 4.3; CHANGE
"severity level specified by the manufacturer" to "severity level according to Table 2 of GB/T 18268.1-2010"; and, add Table 5 "Burst characteristics" (see 12.5; 12.5 of the 2000 edition);
- Modify "Surge immunity" test requirements; ADD the provision that the tests shall be according to the requirements of 4.3; CHANGE "severity level
specified by the manufacturer" to "severity level according to Table 2 of GB/T 18268.1-2010"; amend "Input level shall be maintained at a value that produces 50 % of the output signal" to "The device input shall be held
constant at 50 %"; and, add Table 6 "Surge characteristics" (see 12.6; 12.6 of the 2000 edition);
- ADD the provision that the tests shall be according to the requirements of 4.3 to "Supply pressure interruptions" (see 12.9);
- ADD the test method of "Conducted radio frequency requirements" (see
12.10);
- Delete the provisions regarding "Common mode interference" and "Series mode interference" (see 13.1 and 13.2 of the 2000 edition);
- Modify the harmonic distortion test level in "Harmonic distortion effects" from 2 % and 10 % TO 2 %, 5 %, 10 %, and 20 % (see Clause 14; Clause
14 of the 2000 edition);
- ADD the provision that "Magnetic field effects" test shall meet the
requirements of 4.3; CHANGE the test magnetic field strength from a
uniform 400 A/m (r.m.s) to "according to the relevant standards for the environment in which it is located" (see Clause 15);
- Modify the title of Clause 16 from "Radiated electromagnetic interference" to "Electromagnetic field immunity test"; ADD a provision that the test field strength for the enclosure device is 10 V/m (see Clause 16; Clause 16 of the 2000 edition);
- ADD the provision that the tests shall be according to the requirements of 4.3 to "Electrostatic discharge"; MAKE clear that a severity level, specified in GB/T 18268.1-2010, is defined for the enclosure device equivalent to 4 kV / 8 kV contact/air (see Clause 17);
- CHANGE "Operational long-term drift test" to optional (see Clause 24); - ADD bibliography.
This Part, using translation method, is identical to IEC 61298-3:2008 "Process measurement and control devices - General methods and procedures for
evaluating performance - Part 3: Tests for the effects of influence quantities". China’s documents which have a consistent correspondence with the
international documents normatively referenced in this Part are as follows: - GB/T 2900.79-2008 Electrotechnical terminology - Electrical and electronic measurements and measuring instruments - Part 3: Types of electrical
measuring instruments [IEC 60050(300-313):2001, IDT]
- GB/T 2900.89-2012 Electrotechnical terminology - Electrical and electronic measurements and measuring instruments - Part 2: General terms relating to electrical measurements [IEC 60050(300-312):2001, IDT]
- GB/T 2900.90-2012 Electrotechnical terminology - Electrical and electronic measurements and measuring instruments - Part 4: Specific terms
according to the type of instruments [IEC 60050(300-314):2001, IDT]
- GB/T 2423.1-2008 Environmental testing for electric and electronic
products - Part 2: Test methods - Tests A: Cold (IEC 60068-2-1:2007, IDT) - GB/T 2423.2-2008 Environmental testing for electric and electronic
products - Part 2: Test methods - Tests B: Dry heat (IEC 60068-2-2:2007, IDT)
- GB/T 2423.3-2006 Environmental testing for electric and electronic
products - Part 2: Testing method - Test Cab: Damp heat, steady state (IEC 60068-2-78:2001, IDT)
- GB/T 2423.7-1995 Environmental testing for electric and electronic
products - Part 2: Test methods - Test Ec and guidance: Drop and topple (Primarily for equipment-type specimens) (idt IEC 60068-2-31:1982)
- GB/T 2423.10-2008 Environmental testing for electric and electronic
products - Part 2: Tests methods - Test Fc: Vibration (sinusoidal) (IEC 60068-2-6:1995, IDT)
- GB/T 18268 (all parts) Electrical equipment for measurement, control and Process measurement and control devices - General
methods and procedures for evaluating performance -
Part 3: Tests for the effects of influence quantities
1 Scope
GB/T 18271 specifies general methods and procedures for conducting tests and reporting on the functional and performance characteristics of process measurement and control devices. The tests are applicable to any such devices characterized by their own specific input and output variables, and by the specific relationship (transfer function) between the inputs and outputs, and include analogue and digital devices. For devices that require special tests, GB/T 18271 should be used, together with any product-specific standard
specifying special tests.
This Part of GB/T 18271 covers tests for the effects of influence quantities. 2 Normative references
The following documents are indispensable for the application of this document. For the dated references, only the editions with the dates indicated are applicable to this document. For the undated references, the latest edition (including all the amendments) are applicable to this document.
GB/T 2900.56-2008 Electrotechnical terminology - Control technology (IEC 60050-351:2006, IDT)
GB/T 2900.77-2008 Electrotechnical terminology - Electrical and electronic measurements and measuring instruments - Part 1: General terms relating to measurements [IEC 60050(300-311):2001, IDT]
GB/T 17214.1-1998 Industrial-process measurement and control equipment
- Operating conditions - Part 1: Climatic conditions (idt IEC 60654-1:1993) GB/T 17214.2-2005 Operating conditions for industrial-process
measurement and control equipment - Part 2: Power (IEC 60654-2:1979,
IDT)
GB/T 17214.3-2000 Operating conditions for industrial-process
measurement and control equipment - Part 3: Mechanical influences (idt IEC and electronic measurements and measuring instruments (composed of Part 311, 312, 313 and 314)
IEC 60068-2-1 Environmental testing - Part 2-1: Tests - Test A: Cold
IEC 60068-2-2 Environmental testing - Part 2-2: Tests - Test B: Dry heat IEC 60068-2-6 Environmental testing - Part 2-6: Tests - Test Fc: Vibration (sinusoidal)
IEC 60068-2-31 Environmental testing - Part 2-31: Tests - Test Ec: Drop and topple, primarily for equipment-type specimens
IEC 60068-2-78 Environmental testing - Part 2-78: Tests - Test Cab: Damp heat, steady state
IEC 61326 (all parts) Electrical equipment for measurement, control and laboratory use - EMC Requirements
3 Terms and definitions
The terms and definitions defined in GB/T 2900.56-2008, GB/T 2900.77-2008, and IEC 60050 (300) and the following ones apply to this document.
3.1
Influence quantity
Test parameter chosen to represent a condition representing one aspect of the environment under which a device may operate.
3.2
Variable
Quantity or condition whose value is subject to change and can usually be measured (e.g. temperature, flow rate, speed, signal, etc.).
Note: Modify GB/T 2900.56-2008, definition 351-21-01.
3.3
Signal
Physical variable, one or more parameters of which carry information about one or more variables which the signal represents.

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