Path:
Home >
GB >
Page57 > GB 26786-2011
Home >
Standard_List >
GB >
Page57 > GB 26786-2011
US$289.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB 26786-2011: [GB/T 26786-2011] Specifications for the flame proof of industrial thermocouples and resistance thermometer sensors
Status: Valid
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB 26786-2011 | English | 289 |
Add to Cart
|
3 days [Need to translate]
|
[GB/T 26786-2011] Specifications for the flame proof of industrial thermocouples and resistance thermometer sensors
| Valid |
GB 26786-2011
|
PDF similar to GB 26786-2011
Basic data
| Standard ID | GB 26786-2011 (GB26786-2011) |
| Description (Translated English) | [GB/T 26786-2011] Specifications for the flame proof of industrial thermocouples and resistance thermometer sensors |
| Sector / Industry | National Standard |
| Classification of Chinese Standard | N09 |
| Classification of International Standard | 17.200.20 |
| Word Count Estimation | 11,111 |
| Date of Issue | 2011-07-29 |
| Date of Implementation | 2011-12-01 |
| Quoted Standard | GB 3836.1-2000; GB 2826.2-2000; GB 4208-2008; GB/T 13384 |
| Regulation (derived from) | Announcement of Newly Approved National Standards No. 12 of 2011 |
| Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China |
| Summary | This Chinese standard relates to explosive gas atmospheres industrial thermocouple and thermal resistance (hereinafter referred to as the thermocouple and thermal resistance) of the explosive technical requirements, test methods, inspection rules, packaging and storage. This standard applies to the ambient temperature -20��C ~ +60��C plant explosive gas atmospheres using a thermocouple and thermal resistance. |
GB 26786-2011: [GB/T 26786-2011] Specifications for the flame proof of industrial thermocouples and resistance thermometer sensors
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Specifications for the flame proof of industrial thermocouples and resistance thermometer sensors
ICS 17.200.20
N09
National Standards of People's Republic of China
Industrial thermocouple explosion technical conditions and thermal barrier
Issued on. 2011-07-29
2011-12-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
All technical contents of this standard are mandatory.
The standard proposed by China Machinery Industry Federation.
This standard by the national industrial process measurement and control Standardization Technical Committee (SAC/TC124) centralized.
This standard is drafted by. Shanghai Industrial Automation Instrument Research Institute, Tianjin Central temperature Instrument Co., Ltd., Shanghai Instrument
Automation Systems Inspection and Testing Institute.
Participated in the drafting of this standard .( alphabetical order) Shanghai Xin Fang Industry Co., Ltd., Shanghai Automation Instrumentation Co., Ltd. Automation
Instrument Factory, Shanghai Hongda Instrument Factory, Guangzhou right Instrument Co., Germany, long Sanoh gold Automation Equipment Co., Ltd., Ningbo
Metal casting plant Zhenhai District, Ningbo Zhenhai booming Instrument Co., Ltd., Anhui days Kang Group Co., Ltd., Anhui Rand Electrical and Mechanical Group shares
Parts Limited, West Instrument Group Co., Ltd. Temperature Meter Instrument Factory, Hangzhou Chunjiang Instrument Co., Ltd., Henan Star Automation Instrumentation Co.
Division seventeen Chongqing Sichuan Instrument Co., Ltd., Chongqing Yangtze River Factory Tongxiang Yonghong instrument pottery factory, Zhejiang Yongkang Thermal Meter Factory, Zhejiang Lent
Electrical Co., Ltd., Huzhou Kai Li Automation Instrumentation Co., Ltd. Zhaoqing Automation Instrumentation.
The main drafters of this standard. Liuhan Jie, Yu Po-kun, Ge Qing, Yang double, Benji.
Industrial thermocouple explosion technical conditions and thermal barrier
1 Scope
This standard specifies the explosive gas atmospheres industrial thermocouple and thermal resistance (hereinafter referred to as thermocouple and RTD) technology to flameproof
Requirements, test methods, inspection rules, packaging and storage.
This standard applies to the thermocouple and RTD Ambient temperature -20 ℃ ~ 60 ℃ factory explosive gas environments.
2 Normative references
The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent
Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research
Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.
GB 3836.1-2000 Electrical equipment for explosive gas atmospheres - Part 1. General requirements (eqvIEC 60079-0.1998)
GB 3836.2-2000 Electrical apparatus for explosive gas atmospheres - Part 2. flameproof "d" (eqvIEC 60079-1.1990)
GB 4208-2008 housing protection (IP Code) (IEC 60529.2001, IDT)
GB/T 13384 mechanical and electrical products packaging General technical conditions
3 Terms and Definitions
Terms and definitions GB 3836.1-2000 and GB 3836.2-2000 to establish apply to this standard.
4. Technical Requirements
4.1 appearance and quality of assembly
4.1.1 Appearance
The outer surface of the junction box thermocouple and RTD should have the following signs.
a) in the junction box housing a prominent place should be set clear permanent earth Symbols "on";
b) a prominent place on the terminal box cover, should set clear permanent proof mark "Ex";
c) a prominent place on the terminal box cover, should be set to clear a permanent warning words "No live openings."
4.1.2 assembly quality
Assembly quality thermocouple and RTD should meet the following requirements.
a) the parts assembled correctly, reliable connection parts no defect;
b) the nameplate is correct, reliable fixation; nameplate material chemically resistant materials should be used, such as bronze, brass or stainless steel.
4.2 flameproof joint housing and the junction box cover and protection tube junction
Thermocouple and thermal resistance of the junction box housing and cover and protective tube with a flameproof joint connections shall comply with GB 3836.2-2000
The relevant requirements of Chapter 5.
4.3 flameproof joint connection between the cavity and the main cavity
4.3.1 spigot proof joints
Stop using the port flameproof joint shall comply with GB 3836.2-2000 concerning the 5.1,5.2.2,5.2.3,5.2.4,5.2.5,5.2.6
Claim.
4.3.2 Adhesive flameproof joint
Using adhesive flameproof joint shall comply with GB 3836.1-2000 in Chapters 12 and GB 3836.2-2000 in about 5.5
Claim.
4.4 converter with display with thermocouple and thermal resistance junction box display transparent pieces
4.4.1 Materials
Display transparent parts should be used to effectively withstand the highest temperature at rated conditions of glass material.
4.4.2 Install
Install glass transparent member shall comply with the relevant requirements of 8.2 in GB 3836.2-2000.
4.4.3 Impact
Transparent glass pieces after the impact test should not be any damage to the impact of the explosion-proof performance.
4.4.4 Thermal upheaval
Transparent glass member should be able to withstand drastic changes in the thermal test without cracking.
4.5 thermocouple and thermal resistance junction box materials, impact and static pressure
4.5.1 Materials
Thermocouple and thermal resistance of the junction box should be used metal materials as a percentage by mass magnesium content of not more than 6%.
4.5.2 Impact
You should be able to withstand the impact test GB 3836.1-2000 defined in 23.4.3 any part of the terminal box or flat surface. test
, It should not affect the performance of any explosion damage or deformation.
4.5.3 Static Pressure
Junction box should be able to withstand at least ⅡC level 1.5MPa, hydrostatic pressure test lasted within the 10s ~ 12s. After the test, may not affect the anti -
Any damage or deformation explosive properties.
Introduction means 4.6 Thermocouple wire cable and the thermal resistance of the cable
Introducing means 4.6.1 thermocouple wire cable and the thermal resistance of the cable should meet the GB 3836.1-2000 in Chapters 16 and
GB 3836.2-2000 the relevant requirements of Chapter 12.
4.6.2 When the installation of cables for the scene, which clamping nut entrance compensation should be made of wire or cable bell shape, its inner edge
Smooth, see Appendix A in FIG A.1a), FIG A.1b) below.
4.6.3 When the installation site when using flexible connecting pipe explosion or steel wire, its clamping nut and explosion-proof flexible connecting pipe or pipe connections shall
Number of not less than 5 buckle buckle made of thread, as shown in Figure A.2.
4.6.4 seal compression nut on (see Appendix A in FIG A.1a), FIG A.1b) and Figure A.2) should be used after aging test after its hard
20% of the heat-resistant rubber does not exceed the amount of change in the degree IRHD aging test before.
4.7 Dynamic internal pressure and ignition are not booster
4.7.1 Dynamic pressure housing
Thermocouple and RTD should be able to withstand dynamic pressure test in GB shell of 15.1 3836.2-2000. After the test should not appear
Explosion damage or affect the performance of permanent deformation.
4.7.2 no internal ignition booster
Internal thermocouple and RTD should conform to the provisions of 15.2 GB 3836.2-2000 not ignite the booster requirements.
4.8 Maximum surface exposed portions of thermocouples and RTD temperature
The maximum surface temperature of the exposed portion of the thermocouple and RTD should meet the requirements of 5.1.2 in GB 3836.1-2000.
4.9 RTD and thermocouple protection tube material and pressure
4.9.1 Materials
RTD and thermocouple protection tube should be made of stainless steel or other metal materials.
4.9.2 external pressure
RTD and thermocouple protection tube should be able to withstand the maximum working pressure of its products specified in the instructions of 1.5 times, which lasted 1min outer
Hydrostatic testing, no water seepage and damage phenomenon.
4.9.3 internal pressure
RTD and thermocouple protection tube should be able to withstand at least ⅡC level 1.5MPa, hydrostatic test period within the 10s ~ 12s. After the test,
Shall not affect the performance of any explosion damage or deformation.
4.10 thermocouples and RTD fasteners
4.10.1 When the screw or bolt washers do not completely screwed into the hole, the thread should be left between the bottom of the tail of a screw or bolt and screw holes
margin.
4.10.2 When using removable screw or bolt explosion-proof junction box housing, the screw or bolt holes should not penetrate the shell wall around the hole
Metal thickness should not be less than one-third of the diameter of the holes, but at least 3mm.
Terminal Block thermocouple and thermal resistance of 4.11
4.11.1 Wiring seat conductive rod bolts or nuts, when the twisting force in line with GB 3836.1-2000 defined in 23.4.5 is applied
Moments later, the conductive rod and wire holder should not be loose or turn.
4.11.2 Wiring seat between two different potential terminals, clearances between terminal and junction box housing and creepage distances shall not be less
To 3mm.
4.11.3 Terminal Block comply with the relevant requirements of GB 3836.1-2000 in Chapter 7 and Appendix A of GB 3836.2-2000.
4.12 grounding thermocouple and thermal resistance of the connecting member
On the junction box housing should be not less than the M4 grounding screw. For aluminum alloy or other light metal material of the junction box,
Nuts should be made of copper alloy or stainless steel insert for the manufacture of the transition piece.
4.13 thermocouple and thermal resistance with the enclosure class
Thermocouple and thermal resistance of protective enclosure shall not be less than GB 4208-2008 in IP54 protection requirements.
5 Test methods
5.1 Appearance quality inspection and assembly
5.1.1 Appearance
Thermocouple and RTD appearance test by visual inspection.
5.1.2 assembly quality
Thermocouple and RTD assembly quality inspection, should check pattern, check the component is assembled correctly, the connection is secure.
5.2 flameproof joint housing and the junction box cover and protection tube junction
Flameproof joint housing and the junction box cover and protection tube junction thermocouple and RTD should check pattern control, use and flameproof
Engaging surface structure corresponding measuring inspection.
5.3 flameproof joint connection between the cavity and the main cavity
5.3.1 port flameproof joint stop
Spigot should be flameproof joint control pattern with a micrometer and calipers to test its size; a standard roughness comparison model and flatness testing device
Set to test its surface roughness and flatness of the flameproof joint.
5.3.2 Adhesive flameproof joint
Flameproof joint adhesive pattern control and glue should check the quality of its technical documents adhesive seal junction.
5.4 converter with display with thermocouple and thermal resistance junction box display transparent pieces
5.4.1 Materials
Glass transparent piece of material shall be provided by the manufacturer material valid documents to confirm.
5.4.2 Install
Transparent glass mounted in accordance with GB 3836.2-2000 inspection shall be in 8.2.1 and 8.2.2 requirements, control drawings, process documents and
Physical inspection.
5.4.3 Impact
Impact test transparent glass member shall be conducted in accordance with the method specified in GB 3836.1-2000 in 23.4.3.1.
5.4.4 Thermal upheaval
Hot glass transparent member upheaval test shall be at the maximum operating temperature, with the temperature 10 ℃ ± 5 ℃, a diameter of 1mm of its water injection
injection.
5.5 RTD and thermocouple junction box materials, impact and static pressure
5.5.1 Materials
Material manufacturer shall thermocouple and thermal resistance junction box to provide material valid documents to confirm. The use of aluminum or other
Light metal material, it must provide a single laboratory material composition or certificate.
5.5.2 Impact
Impact test thermocouple and thermal resistance junction box should be carried out according to the method specified in GB 3836.1-2000 in 23.4.3.1.
5.5.3 Static Pressure
With water at room temperature, according to the provisions of 4.5.3 the pressure was within the last 10s ~ 12s hydrostatic test for each terminal box.
5.6 Thermocouple wire cable and the thermal resistance of the cable glands
Introducing means 5.6.1 thermocouple wire cable and the thermal resistance of the cable should control pattern and physical inspection, and shall GB 3836.1-
2000 Appendix D of D3.1.1, D3.1.3 and D3.1.4 of test methods for clamping test; according to GB 3836.2-2000 Appendix D
The D2.1.1 and D2.2 sealing test methods and mechanical strength tests.
5.6.2 of cables, should control the structure and shape of the entrance to Appendix A in Figure A.1a) and A.1b) test and the compression nut
Inner edge smoothness.
5.6.3 explosion-proof flexible connecting pipe or steel pipe, should control Figure A.2 in Appendix A test structure and the compression nut connecting thread
Number buckle.
Method D3.3 5.6.4 seal material hardness and aging shall GB 3836.1-2000 test prescribed in Appendix D test.
5.7 Dynamic internal pressure and ignition are not booster
5.7.1 Dynamic pressure housing
Shell dynamic pressure test thermocouple and thermal resistance shall be carried out in accordance with the requirements of 15.1.2.2 of GB 3836.2-2000.
5.7.2 no internal ignition booster
Internal thermocouple and thermal resistance of ignition shall not booster test in 15.2 GB 3836.2-2000 requirements.
5.8 Maximum surface exposed portions of thermocouples and RTD temperature
The maximum surface temperature of the thermocouple and thermal resistance of the exposed portion of the 23.4.6.1 according to the provisions of GB 3836.1-2000 test.
5.9 RTD and thermocouple protection tube material and the water pressure
5.9.1 Materials
RTD and thermocouple protection tube material manufacturer shall provide valid documents to confirm.
5.9.2 external pressure
With water at room temperature, according to 4.9.2 for each predetermined pressure to protect the outer tube of the pressure test lasted 1min.
5.9.3 internal pressure
With water at room temperature, according to a predetermined pressure 4.9.3 for each period within the protection tube hydrostatic testing of 10s ~ 12s.
5.10 thermocouples and RTD fasteners
5.10.1 control pattern with the appropriate balance between the left thread gages individually check screws and bolts tail.
5.10.2 control pattern with the corresponding measuring individually check the junction box housing does not penetrate the thickness around the screw holes.
Terminal Block thermocouple and thermal resistance of 5.11
5.11.1 Wiring seat conductive rod bolts or nuts, GB 3836.1-2000 moment in 23.4.5 shall be provided, with a torque wrench
Hand torsion torque test.
5.11.2 Wiring seat between two different potential terminals and terminals with clearances between the junction box housing and creepage distances apply
Vernier caliper test.
5.11.3 Terminal Block material manufacturer shall provide a valid proof to confirm, other properties should be GB 3836.2-2000 Appendix
A predetermined test is performed.
5.12 thermocouple and thermal resistance of the ground connection
Thermocouple and thermal resistance of the ground connection should control drawings and objects, in accordance with the relevant provisions of GB 3836.1-2000 into Chapter 15
Line test.
5.13 thermocouples and RTD enclosure class
Shell protection grade test thermocouple and thermal resistance, the relevant requirements of GB 4208-2008 should be.
6 Inspection rules
6.1 Explosion-proof certification and issuance of certificate
6.1.1 trial each unit according to the standard thermocouple and RTD, should be sent by the State Quality Supervision, Inspection department authorized for testing.
6.1.2 Sample inspection test report should provide the following.
a) test reports or quality of materials related materials guarantee;
b) junction box hydrostatic test report;
c) within the protective tube, the outer pressure test report;
d) basic product performance test report.
6.1.3 The test procedures shall comply with GB 3836.1-2000 Appendix A requirements.
6.2 factory inspection
Each response thermocouple and RTD factory inspection and qualified along with product certificate before leaving the factory. Factory inspection
There are any one of the results do not meet this standard, the product is defective and can not be shipped.
Factory inspection project, junction box cover flameproof joint, wiring cavity and the main cavity spigot flameproof joint, junction box hydrostatic testing, security
Protective tube inner and outer pressure test shall be conducted prior to product assembly.
6.3 Type inspection
6.3.1 thermocouple and thermal resistance of various structures, there should be one of the following types of testing.
a) new product trial time;
b) when the normal production of products amounted to five years;
c) When the product structure, materials and technology have greatly changed;
d) the national quality supervision agencies carry out type testing requirements.
6.3.2 Type test sampling method using the factory inspection of a number of products at random no less than three thermocouple or RTD.
6.4 Test Project
Thermocouple and thermal resistance of factory inspection and type test items shown in Table 1.
Table 1 Thermocouple and RTD Inspection project
No. Inspection items Technical Requirements Test Method No. Terms Terms Factory test a type test
1 Appearance and assembly quality 4.1 5.1 ★ ★
2 junction box with cover and protective tube connection flameproof joint 4.2 5.2 ★ ★
Flameproof joint between the junction box cavity 3 and the main chamber
Mouth flameproof joint stop
Adhesive flameproof joint
4.3.1
4.3.2
5.3.1
5.3.2
4 junction box display transparent parts
Glass transparent piece of material
Transparent glass mounting
Transparent glass parts impact
Transparent glass parts hot upheaval
4.4.1
4.4.2
4.4.3
4.4.4
5.4.1
5.4.2
5.4.3
5.4.4
Table 1 (continued)
No. Inspection items Technical Requirements Test Method No. Terms Terms Factory test a type test
5 Junction box material, impact testing, hydrostatic
Junction box material
Impact test
Hydrostatic test
4.5.1
4.5.2
4.5.3
5.5.1
5.5.2
5.5.3
6 introduction means
Clamping test, seal test, mechanical strength test
Compression nut
Seals
4.6.1
4.6.2 or 4.6.3
4.6.4
5.6.1
5.6.2 or 5.6.3
5.6.4
7 Shell internal dynamic pressure and ignition are not booster
Dynamic pressure housing
No internal ignition booster
4.7.1
4.7.2
5.7.1
5.7.2
8 exposed parts of the maximum surface temperature 4.8 5.8 - ★
9 protective tube
Protection tube material
Outside pressure test
Internal pressure test
4.9.1
4.9.2
4.9.3
5.9.1
5.9.2
5.9.3
10 fasteners and fastening
Impervious screw balance
Impervious thickness around the hole
4.10.1
4.10.2
5.10.1
5.10.2
Terminal Block 11
Seat wiring connection or screw nut torque
Clearances and creepage distances
Terminal Block Material
4.11.1
4.11.2
4.11.3
5.11.1
5.11.2
5.11.3
12 ground connector 4.12 5.12 ★ ★
13 enclosure class 4.13 5.13 - ★
NOTE. "★" indicates the project should be examined, "-" indicates that the item is not checked.
a factory inspection. flameproof joint junction box cover, wiring cavity and the main cavity spigot flameproof joint, junction box hydrostatic testing, protective tube, outside water pressure test
Test should be carried out prior to product assembly.
7 logo
7.1 nameplate
Product nameplate should have, in addition to the contents of thermocouple or RTD related product standards, but should also include.
Red clear sign a) the upper right corner "Ex";
b) the product name;
c) proof mark;
d) Explosion-proof Certificate of Conformity;
e) the number;
f) explosion-proof inspection unit mark;
g) manufacturer's name or trademark.
7.2 product certification
Product certification, in addition to the contents of thermocouple or RTD related product standards, but it should also include.
a) the product name;
b) Model;
c) proof mark;
d) Explosion-proof Certificate of Conformity;
e) product number.
7.3 User's Manual
Manufacturer shall provide users with the product manual, in addition to the contents of the relevant product standard specifies the thermocouple or RTD, should also
include.
a) proof mark;
b) explosion-proof Certificate of Conformity;
c) the installation site;
d) specific technical requirements;
e) the maintenance considerations.
8 packaging and storage
8.1 Packaging
Thermocouple or RTD packaging should be GB/T 13384 stipulated packaging.
8.2 Storage
Thermocouple or RTD product should be stored in air-drying, the product does not contain harmful substances are corrosive environment.
Appendix A
(Normative)
Introducing compression nut structure of the device
a) applies to nominal diameter of not more than 20mm cable b) applies to the nominal diameter greater than 20mm cable
1 --- compression nut;
2 --- metal washers;
3 --- ring;
4 --- junction box;
5 --- prevent cable pull-out and locking parts.
Figure A.1 cable wiring clamp nut
1 --- compression nut;
2 --- metal washers;
3 --- ring;
4 --- junction box.
Figure A.2 proof flexible connecting pipe or steel pipe with a compression nut
1102-
Rights Proprietary Rights Reserved
ISBN. 155 066 · 1-43716
Tips & Frequently Asked Questions:
Question 1: How long will the true-PDF of GB 26786-2011_English be delivered?
Answer: Upon your order, we will start to translate GB 26786-2011_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.
Question 2: Can I share the purchased PDF of GB 26786-2011_English with my colleagues?
Answer: Yes. The purchased PDF of GB 26786-2011_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.
Question 3: Does the price include tax/VAT?
Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs):
List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?
Answer: Yes. If you need your currency to be printed on the invoice, please write an email to
[email protected]. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.