GOST 1791-2014
GOST 1791−2014 Wire of Nickel and copper-Nickel alloys for extension leads for thermoelectric converters. Specifications
GOST 1791−2014
INTERSTATE STANDARD
WIRE OF NICKEL AND COPPER-NICKEL ALLOYS FOR EXTENSION LEADS FOR THERMOELECTRIC CONVERTERS
Specifications
Nickel and copper-nickel alloys wire for extension leads for thermoelectric temperature transducers. Specifications
ISS 77.150.40
Date of introduction 2015−09−01
Preface
Goals, basic principles and procedure of works on interstate standardization established in GOST 1.0−92 «interstate standardization system. Basic provisions» and GOST 1.2−2009 «interstate standardization system. Interstate standards, rules and recommendations on interstate standardization. Rules of development, adoption, renewal and cancellation"
Data on standard
1 DEVELOPED by the Technical Committee for standardization TC 106 „Tsvetmetprokat“, Scientific-research, project and design Institute for alloys and processing of nonferrous metals open joint stock company „Institute tsvetmetobrabotka"
2 SUBMITTED by the Technical Secretariat of the Interstate Council for standardization, Metrology and certification
3 ACCEPTED by the Interstate Council for standardization, Metrology and certification (Protocol dated 5 December 2014 No. 46−2014)
The adoption voted:
Short name of the country on MK (ISO 3166) 004−97 | Country code, pomc (ISO 3166) 004−97 | Abbreviated name of the national authority for standardization |
Belarus | BY |
Gosstandart Of The Republic Of Belarus |
Kyrgyzstan | KG |
Kyrgyzstandard |
Russia | EN |
Rosstandart |
Uzbekistan | UZ |
Uzstandard |
4 by Order of the Federal Agency for technical regulation and Metrology of December 12, 2014 2047 N-St inter-state standard GOST 1791−2014 introduced as a national standard of the Russian Federation from September 1, 2015.
5 REPLACE GOST 1791−67
Information about the changes to this standard is published in the annual reference index „National standards“, and the text changes and amendments — in monthly information index „National standards“. In case of revision (replacement) or cancellation of this standard a notification will be published in the monthly information index „National standards“. Relevant information, notification and lyrics are also posted in the information system of General use — on the official website of the Federal Agency for technical regulation and Metrology on the Internet
1 Scope
This standard applies to wire round made of Nickel and copper-Nickel alloys designed for making extension leads for thermoelectric converters: chromel-Copel in the range from minus 50 °C to 200 °C chromel-alumel and platinoidy-platinum in the range from 0°to 100 °C.
The requirements of this standard are mandatory.
2 Normative references
This standard uses the regulatory references to the following international standards:
GOST 8.338−2002 State system for ensuring the uniformity of measurements. The thermoelectric converters. Verification procedure
GOST 492−73 Nickel, alloys Nickel and copper-Nickel, processed by pressure. Brand
GOST 982−80 Oil transformer. Specifications
GOST 1770−74 (ISO 1042−83, ISO 4788−80) Glassware volumetric laboratory glass. Cylinders, beakers, flasks, test tubes. General specifications
GOST 1953.1−79 Bronze tin. Methods of analysis
GOST 1953.2−79 Bronze tin. Methods for determination of lead
GOST 1953.3−79 Bronze tin. Methods for determination of tin
GOST 1953.4−79 Bronze tin. Methods for determination of phosphorus
GOST 1953.5−79 Bronze tin. Methods for determination of Nickel
GOST 1953.6−79 Bronze tin. Methods for determination of zinc
GOST 1953.7−79 Bronze tin. Methods of iron determination
GOST 1953.8−79 Bronze tin. Methods for determination of aluminium
GOST 1953.9−79 Bronze tin. Methods for determination of silicon
GOST 1953.10−79 Bronze tin. Methods for determination of antimony
GOST 1953.11−79 Bronze tin. Methods for determination of bismuth
GOST 1953.12−79 Bronze tin. Methods of determining sulphur
GOST 1953.13−79 Bronze tin. Methods for determination of manganese
GOST 1953.14−79 Bronze tin. Methods for determination of magnesium
GOST 1953.15−79 Bronze tin. Methods for determination of arsenic
GOST 1953.16−79 Bronze tin. Methods for determination of titanium
GOST 2112−79 copper Wire round electrical. Specifications
________________
* On the territory of the Russian Federation the document is not valid. Apply TU 16. K71−087−90 (ICS 11−91). TU 16. K71−087−90 not given. For additional information, please refer to the link. — Note the manufacturer’s database.
GOST 2991−85 wooden disposable Boxes for loads up to 500 kg. General specifications
The Wire GOST 3282−74 General purpose low carbon steel. Specifications
GOST 3560−73 package steel Strip. Specifications
GOST 4381−87 Micrometers lever. General specifications
GOST 6323−79 Wire with polyvinylchloride isolation for electric installations. Specifications
GOST 6507−90 Micrometers. Specifications
GOST 6689.1−92 Nickel, alloys Nickel and copper-Nickel. Methods for determination of copper
GOST 6689.2−92 Nickel, alloys Nickel and copper-Nickel. Methods for determination of Nickel
GOST 6689.3−92 Nickel, alloys Nickel and copper-Nickel. Methods for determination of Nickel and cobalt
GOST 6689.4−92 Nickel, alloys Nickel and copper-Nickel. Methods for determination of zinc
GOST 6689.5−92 Nickel, alloys Nickel and copper-Nickel. Methods of iron determination
GOST 6689.6−92 Nickel, alloys Nickel and copper-Nickel. Methods for determination of manganese
GOST 6689.7−92 Nickel, alloys Nickel and copper-Nickel. Methods for determination of silicon
GOST 6689.8−92 Nickel, alloys Nickel and copper-Nickel. Methods for determination of aluminium
GOST 6689.9−92 Nickel, alloys Nickel and copper-Nickel. Methods for determination of cobalt
GOST 6689.10−92 Nickel, alloys Nickel and copper-Nickel. Methods for determination of carbon
GOST 6689.11−92 Nickel, alloys Nickel and copper-Nickel. Methods for determination of tungsten
GOST 6689.12−92 Nickel, alloys Nickel and copper-Nickel. Methods for determination of magnesium
GOST 6689.13−92 Nickel, alloys Nickel and copper-Nickel. Methods for determination of arsenic
GOST 6689.14−92 Nickel, alloys Nickel and copper-Nickel. Methods for determination of chromium
GOST 6689.15−92 Nickel, alloys Nickel and copper-Nickel. Methods for determination of antimony
GOST 6689.16−92 Nickel, alloys Nickel and copper-Nickel. Methods for the determination of zinc, cadmium, lead, bismuth and tin
GOST 6689.17−92 Nickel, alloys Nickel and copper-Nickel. Methods for determination of bismuth
GOST 6689.18−92 Nickel, alloys Nickel and copper-Nickel. Methods of determining sulphur
GOST 6689.19−92 Nickel, alloys Nickel and copper-Nickel. Methods for determination of phosphorus
GOST 6689.20−92 Nickel, alloys Nickel and copper-Nickel. Methods for determination of lead
GOST 6689.21−92 Nickel, alloys Nickel and copper-Nickel. Methods for determination of titanium
GOST 6689.22−92 Nickel, alloys Nickel and copper-Nickel. Methods for determination of tin
GOST 7229−76 Cables, wires and cords. Method of determination of electrical resistance of conductors and conductors
GOST 8273−75 wrapping Paper. Specifications
GOST 8828−89 base Paper and paper double-layer waterproof packaging. Specifications
GOST 9078−84 flat Pallets. General specifications
GOST 9245−79 Potentiometers DC measurement. General specifications
GOST 9347−74 Cardboard gasket and gasket from him. Specifications
GOST 9569−2006 waxed Paper. Specifications
GOST 9557−87 flat wooden Pallet size 800x1200 mm. specifications
GOST 10446−80 (ISO 6892−84) Wire. Test method tensile
GOST 13646−68 glass Thermometers, mercury for precision measuring. Specifications
GOST 14192−96 Marking of cargo
GOST 15846−2002 Products that are sent to the far North regions and equated areas. Packing, marking, transportation and storage
GOST 17675−87 Tubes electrical insulating flexible. General specifications
GOST 20435−75 the universal metal closed Container of nominal gross mass 3,0 t specifications
GOST 21140−88 Tara. System sizes
GOST 21650−76 means of fastening of package cargoes in transport packages. General requirements
GOST 22225−76 universal Containers with a gross weight 0,625 and 1,25 t. specifications
GOST 24047−80 Semi-finished products from nonferrous metals and their alloys. Sampling for tensile test
GOST 24231−80 non-ferrous metals and alloys. General requirements to selection and preparation of samples for chemical analysis
GOST 24597−81 the packaged goods. Basic parameters and dimensions
GOST 25086−2011 non-ferrous metals and their alloys. General requirements for methods of analysis
GOST 26663−85 transport Packs. Formation with the use of packaging. General technical requirements
ST SEV 543−77 Number. Record rules and rounding
Note — When using this standard appropriate to test the effect of reference standards for the sign „National standards“ drawn up as of January 1 of the current year and related information signs, published in the current year. If the reference standard is replaced (changed), when using this standard should be guided by replacing (amended) standard. If the reference standard is cancelled without replacement, then the situation in which the given link applies to the extent that does not affect this link.
3 Terms and definitions
This standard applies the following terms with respective definitions:
3.1 wire: Prefabricated with a cross section of constant size, rolled into the Bay or wound into a coil, manufactured by rolling, pressing or drawing.
3.2 ovality (deviation from circular shape): Difference between the largest and smallest values of the diameters measured at one cross section perpendicular to the axis of the wire.
3.3 Bay: Cut product wound into a series of continuous turns right separatornyi rows, without sharp bends.
3.4 dent: Local deepening of various sizes and shapes with sloping edges.
3.5 shell: the deepening on the surface of the product from the chipping of impurities.
3.6 a crack: a Defect of a surface, representing a rupture of the metal.
3.7 stratification: the discontinuity of metal, oriented along the direction of deformation.
3.8 risks: Longitudinal recesses or protrusions on the surface of products of different length in the warp direction.
4 Assortment
4.1 the Diameters of round wire and maximum deviations thereon shall be as specified in table 1.
Table 1
In millimeters
Nominal diameter of wire |
Maximum deviation of diameter |
0,20 |
±0,01 |
0,30 | |
0,40 |
+0,015 -0,01 |
0,42 | |
0,45 | |
0,50 | |
0,52 | |
0,55 | |
0,57 | |
0,60 |
+0,02 -0,01 |
0,67 | |
0,70 | |
0,80 | |
0,90 | |
Of 1.00 |
±0,02 |
1,10 | |
1,13 | |
1,20 | |
1,40 | |
1,60 | |
1,76 | |
Of 2.00 | |
2,20 | |
2,25 | |
2,50 | |
Note — Diameters, cross-sectional area and theoretical weight of 1000 m used wire of circular cross section is given in Appendix A. |
4.2 out-of-Roundness of the wire must not exceed the permissible limit deviation for diameter.
4.3 Wire is supplied in coils, Hanks or on reels.
The legend of wire are placed according to the scheme:
Use the following abbreviations:
method of manufacture: |
cold-deformed (drawn) — D, |
sectional shape: |
round — CU; |
condition: |
soft — M; |
form of delivery: |
in rods, coils — B, |
on the coil — KT; | |
special conditions: |
enamelling — e; |
class of tolerances: | 1st class tolerances — 1, |
2nd class tolerances — 2. |
Instead of the missing data is „X“ (except for notations of special conditions).
Symbols are examples of wire:
Wire cold-drawn, round section, soft, with a diameter of 0.60 mm, in coils alloy chromel To brand NH9 1st class tolerances:
Wire DKRM 0,60 CT NH9 1 GOST 1791−2014
The same, with a diameter of 1.20 mm, in coils, of alloy Copel brand Mnmc43−0,5 2-class tolerances:
Wire DKRM of 1.20 BT Mnmc43−0,5 2 GOST 1791−2014
Same, diameter 0.20 mm, in coils, of alloy Constantan brand Mnmc40−1,5 2-class tolerances:
Wire DKRM 0,20 CT Mnmc40−1,5 2 GOST 1791−2014
The same, with a diameter of 2.50 mm, in coils, of alloy TP brand MH0,6:
Wire DKRM 2,50 BT MN0,6 GOST 1791−2014
5 Technical requirements
5.1 Wire produced in accordance with the requirements of this standard for technological regulations approved in the prescribed manner from Nickel alloy grade NH9 (chromel) and copper-Nickel alloys in grades Mnmc43−0.5 (Copel), Mnmc40−1.5 (Constantan) and MH0,6 (TP)4−3 with the chemical composition according to GOST 492 .
Permitted deviation of the chemical composition of wire on the primary components and impurities not more than 0.3% of the standards specified in GOST 492; TA in the alloy the carbon content is not regulated, if the wire meets all other requirements of this standard.
5.2 Wire produced in the annealed (soft) state with an oxidized surface. At the request of the consumer of the alloy wire Copel are made with non-oxidized (light) surface.
5.3 the Surface of wire should be clean, free from contamination, hinder inspection must not have cracks, captivity, holes, delaminations, pinches, nicks, scratches, and scratches.
Not permitted surface defects, leading out the wire (after Stripping control) for limit deviation for diameter. On the surface of the wire, intended for the enameling, there should be traces of grease.
5.4 Thermoelectric power (T. E. D.) developed by the wire paired with copper sample must meet the requirements specified in table 2.
Table 2
The name of the alloy | T. E. D. S. is paired with a copper sample at a temperature of 100 °C (the free end at 0°C), mV | Limit deviation, mV, for the class of permit | |
1st | 2nd | ||
Chromel To |
+2,09 | 0,05 | 0,08 |
Kopel |
-4,77 | 0,06 | 0,10 |
Constantan |
-4,10 | 0,06 | 0,10 |
TP |
-0,64 | - | - |
Notes:
1 On the use of wire of the alloy chromel, Copel, Constantan, etc see table A2 of Annex A.
2, the alloy Wire of TP are made with maximum deviation of ±0.03 mV.
5.5 electrical resistivity of the alloys To chromel, Copel, Constantan, etc must comply with the requirements set out in table 3.
Table 3
The name of the alloy | Electrical resistivity at 20 °C, 10Ohm/m |
Chromel To | 0,67±0,05 |
Kopel | 0,47±0,02 |
Constantan | 0,465±0,015 |
TP | 0,025±0,003 |
5.6 the Mass of wire on a reel or on a spool in Appendix B.
5.7 Mechanical properties the wire shall be as specified in table 4.
Table 4
The name of the alloy | Wire diameter | Temporary resistance , MPa (kgf/mm) |
Elongation after rupture, calculated the length of the specimen is 100 mm , %, not less |
Chromel To |
0,20; 0,30 | 490 (50) | 15 |
0,40−2,50 | 20 | ||
Kopel | 0,20; 0,30 |
390 (40) | 15 |
0,40−2,50 | 20 | ||
Constantan | 0,20; 0,30 |
390 (40) | 10 |
0,40−2,50 | 15 | ||
TP | 0,20; 0,67 |
200 (20) | 20 |
0,70−2,50 | 25 |
6 acceptance Rules
6.1 Wire take parties. The party should consist of wire of one class of tolerances T. E. D. S., of the same diameter, same brand of alloy shall be furnished in one document about quality that contains:
is the trademark or name and trademark of manufacturer;
— the name of the country of manufacture;
— legal address of the manufacturer and/or seller;
— designation of wire;
— the batch number;
the weight of the party;
— number of places (coves, skeins or coils).
The weight of the batch shall be not more than 1000 kg.
6.2 the quality of the surface, wire sizes and T. E. D. S. check on each reel (reel).
6.3 To check the electrical resistivity selected three coils (coils) from the party.
6.4 To check the mechanical properties of the selected three coils (coils) from the party.
Test wire in the gap is carried out at the request of the consumer.
6.5 To check the chemical composition of the selected two coils, or two coils from the party.
Allowed the manufacturer to test the chemical composition of the samples taken from the molten metal.
6.6 If unsatisfactory test results of at least one indicator thereon, a second test of the doubled sample taken from the same batch. The results of repeated tests spread to the entire party.
7 Methods of inspection and testing
7.2* Inspection of the appearance of the wire is carried out without the use of magnifying devices.
_______________
* Numbering corresponds to the original. — Note the manufacturer’s database.
7.3 the wire Diameter is measured on each selected reel, the Bay or the coil micrometers 4381 according to GOST and GOST 6507 or other devices that provide the necessary measurement accuracy.
The measurement of the diameter of the wire and its out-of-roundness is carried out in at least two places, in two mutually perpendicular directions of the same section at the beginning, end and middle of the strand, bays or coils. In diameter taking the average value of one or more pairs of measurements taken at a right angle at one cross section.
If there is disagreement in the definition of diameter is measured by micrometer according to GOST 4381, GOST 6507.
7.4 the values of T. E. D. S. wire is determined by the dimension of T. E. D. developed by the sample at the temperature of the free end 0 °C and the working end 100 °C in a pair with copper wire, according to the technical documentation with T. E. D. S. relative to platinum at 100 °C equal to (0,760±0,005) mV.
T. E. D. S. of the samples in a pair with copper wire is determined by the method specified in Annex b or other methods that provide the necessary measurement accuracy.
In the event of disagreement in determining the values of T. E. D. S. is measured by the method specified in Appendix V.
7.5 electrical resistivity is determined according to GOST 7229 the method providing a determination of the resistance with an accuracy of 1%.
7.6 Test wire tensile (tensile strength and elongation after fracture) is carried out according to GOST 10446 on samples with an estimated length of 100 mm. Selection and preparation of the samples is carried out according to GOST 24047.
For tensile tests cut one sample from each selected coil (coils).
7.7 For the analysis of the chemical composition of each selected coil (coils) cut one sample. Selection and preparation of samples for the determination of chemical composition is carried out in the churchyard 24231.
Chemical composition analysis is carried out according to GOST 1953.1 — 1953.16 GOST, GOST 25086, 6689.1 GOST — GOST and GOST 6689.22 30608.
Allowed to carry out chemical analysis by other methods of equal precision specified. If there is disagreement in the assessment of the chemical composition analysis is carried out according to GOST 25086, 6689.1 GOST — GOST 6689.22, 1953.1 — 1953.16 GOST and GOST 25086.
7.8 the results of the measurements are rounded according to the rounding rules established ST SEV 543.
8 Packing, marking, transportation and storage
8.1 Wire diameter of 0.45 mm or less is wound on the coil, with a diameter of 0.50 mm or more — are rolled into coils.
Customer’s request wire diameter from 0.50 to 0.70 mm inclusive is wound on the coil.
8.2 the Wire shall be rolled into coils or wound on a coil right separatornyi rows, without sharp bends. The distance between the upper row of the wire and the edge of the cheeks of the coil should be at least 3 mm.
8.3 the Turns of wire in coil or Hank should not adhere to.
The wire ends should be firmly fixed with the free finding the external end and the free unwinding of the wire.
8.4 Each coil or coil shall consist of one segment wire, without splices, twists and knots.
8.5 Each skein shall be tied with annealed wire with diameter not less than 0.5 mm according to GOST 3282 or synthetic tape according to the technical documentation in two places symmetrically around the circumference of the roll, twist the ends of the wire at least three turns.
Coils of the same diameter, same brand of alloy, one class of tolerance at T. E. D. S. associate in Bay.
Each coil shall be securely tied with annealed wire with diameter not less than 1 mm according to GOST 3282 in at least three places evenly around the circumference of the Bay with a strip of paper according to GOST 8273 in the field of dressing with the twisting of the wire ends at least five turns.
8.6 To each coil or coils, if it is not connected to the Bay, should be labeled, and on each reel shall be pasted label stating:
— trademark or name and trademark of manufacturer;
— the name of the country of manufacturer;
— the legend of the wire;
— batch number;
— stamp of technical control.
8.7 Bay or the coil wire diameter of 1.00 mm and less shall be Packed in tight wooden boxes type I or type II according to GOST 2991 or other boxes, providing product safety, vystlannyh a paper according to GOST 8828, GOST 8273 or cardboard graveyard 9347. Dimensions of boxes — GOST 21140.
Wire with diameter more than 1.00 mm shall be wrapped around the circumference of a coil or Bay non-woven material or other types of packaging materials, ensuring the safety of products, with the exception of linen and cotton fabrics for technical documentation and tied with synthetic twine in a spiral or a wire in diameter not less than 1.0 mm according to GOST 3282 in two places symmetrically around the circumference of the Bay. The outer diameter of a coil or Bay must not exceed 1000 mm.
Weight of cargo must not exceed 80 kg.
8.8 Consolidation packages in overpacks carried out in accordance with the requirements of GOST 24597 and GOST 26663, on pallets according to GOST 9078 and GOST 9557. The formation of the packages from the bins can without pallets with the use of wooden bars of size not less than 50x50 mm. Weight of the packets should not exceed 1250 kg.
The transport packages shall be sealed transversely and longitudinally with tying each row of packages with the steel wire diameter not less than 3.0 mm according to GOST 3282со twisting not less than five coils or steel tape not less than 0,3х30 churchyard 3560 mm, the bonding ends of the castle.
The means of fastening in transport packages — according to GOST 21650. Dimensions of packages — according to GOST 24597.
8.9 the Bay, rolls of barbed wire allowed to be transported in universal containers churchyard 20435 or GOST 22225 or box pallets.
During transportation in containers each coil or a coil of wire with a diameter of 0.5 mm or more should be wrapped around the circumference of the paper according to GOST 8828 or GOST 9569, then the non-woven fabric and tied with synthetic twine.
During transportation in containers bays or coils of wire needs to be laid and strengthened in such a way as to prevent their displacement. In addition, inlets should be protected from corrosion, contamination and mechanical damage.
When transported in box pallets, lined inside by a paper according to GOST 8828или GOST 8273 or cardboard according to GOST 9347, wire diameter of less than 1 mm are not Packed in boxes, and with a diameter greater than 1 mm are not wrapped in packaging material.
Packaging of products sent to the far North regions and equated areas according to GOST 15846, in the group „Metals and metal products."
8.10 it is possible to use other types of packaging materials not inferior in strength of the above, and other types and methods of packing, providing safety of quality of the wire.
8.11 In each box or container must be attached to the packing slip, containing:
is the trademark or name and trademark of manufacturer;
— the name of the country of manufacture;
— designation of wire;
— the batch number;
— the net weight;
— gross mass;
— the number of the packer.
8.12 Transport marking under GOST 14192 with the application of manipulation sign „Protect from moisture“.
8.13 Wire transporterowych all types of transport in covered vehicles in accordance with cargo carriage regulations applicable to transport of this species.
8.14 Wire should be stored in covered premises. When storing and transporting the wire should be protected from mechanical damage, moisture and active chemical substances.
8.15 the consumer wire should be kept in stock in the manufacturer’s packaging for at least two days to equalize the temperature of the wire to the room temperature. After this period, the wire needs to be unpacked.
8.16 subject to these conditions of transportation and storage of consumer properties of the wire do not change.
Annex a (recommended). Diameters, cross-sectional area and theoretical weight of 1000 m of wire alloys chromel, Copel, Constantan, etc
Appendix A
(recommended)
Table A. 1
Wire diameter, mm | The cross-sectional area, mm |
Theoretical weight of 1000 m of wire, kg, alloy | ||
chromel (density 8.7 g/cm) |
Kopel and Constantan (density 8.9 g/cm) |
TP (density of 8.96 g/cm) | ||
0,20 |
0,0314 | 0,273 | 0,280 | 0,281 |
0,30 |
0,0707 | 0,615 | 0,626 | 0,63 |
0,40 |
0,126 | 1,096 | 1,119 | 1,129 |
0,42 |
0,138 | 1,201 | 1,228 | 1,236 |
0,45 |
0,159 | 1,383 | 1,415 | 1,425 |
0,50 |
0,196 | 1,706 | 1,747 | 1,756 |
0,52 |
Of 0.212 | 1,844 | 1,887 | 1,900 |
0,55 |
0,238 | 2,071 | 2,115 | 2,132 |
0,57 |
0,255 | 2,218 | 2,270 | 2,285 |
0,60 |
0,283 | 2,462 | 2,516 | 2,536 |
0,67 |
0,352 | 3,062 | 3,133 | 3,154 |
0,70 |
0,385 | 3,350 | 3,425 | 3,450 |
0,80 |
0,503 | 4,376 | 4,474 | 4,507 |
0,90 |
0,636 | 5,533 | 5,662 | 5,699 |
Of 1.00 |
0,785 | 6,830 | 6,990 | 7,034 |
1,10 |
0,950 | 8,265 | 8,458 | 8,512 |
1,13 |
1,002 | 8,717 | 8,918 | 8,978 |
1,20 |
1,13 | 9,831 | 10,066 | 10,125 |
1,40 |
1,54 | 13,398 | 13,700 | 13,798 |
1,60 |
2,01 | 17,487 | 17,894 | 18,010 |
1,76 |
2,43 | 21,169 | 21,656 | 21,802 |
Of 2.00 |
3,14 | 27,318 | 27,960 | 28,134 |
2,20 |
3,80 | 33,060 | 33,820 | 34,048 |
2,25 |
Of 3.97 | 34,539 | 35,387 | 35,571 |
2,50 |
Of 4.91 | 42,717 | 43,687 | 43,994 |
Appendix b: Application of wire
Appendix B
Recommended use of wire*
________________
* The name of the Application Used corresponds to the original. — Note the manufacturer’s database.
Table B1
The name of the alloy | Temperature limits of application of the wire to the extension wire, °C |
Lived of the extension wire | Material in a pair which use alloy | Type Converter |
Chromel To | From -50 to +200 |
Positive | With coppel | HC (L) |
Kopel | From -50 to +200 |
Negative | With chromel | HC (L) |
Constantan | From -0 to +100 | With copper | HA (K) | |
TP | From -0 to +100 | PP (S) |
Annex b (mandatory). The mass of the wire in the Bay, Hank or on a spool
The App
(required)
Table B. 1
Wire diameter, mm |
The mass of the cut wire on the coil (reel), kg, not less | |||||
normal | reduced | |||||
0,2 |
0,2 | 0,15 | ||||
0,3 |
0,5 | 0,30 | ||||
From | 0,4 | to | 0,5 | incl. | 1,0 |
0,50 |
SV. | 0,5 | “ | 0,6 | “ | 2,0 |
1,20 |
SV. | 0,6 | » | 1,0 | " | 4,0 |
Of 2.00 |
SV. | 1,0 | " | 2,5 | " | 8,0 |
Of 4.00 |
Note — the Number of coils (coils) low mass must not be more than 10% of the batch weight. |
Appendix d (mandatory). Method of measuring T. E. D. S. of the samples in a pair with copper wire
Appendix D
(required)
T. E. D. s are the samples of the alloys chromel, Copel, Constantan, etc in a pair with copper wire, determined at a temperature of 100°C
G. 1 Sampling
Collect a bunch of samples (up to eight) of the tested alloys and one sample of copper wire.
Working form the junction by welding or soldering tin.
Each sample is isolated from each other by a tube commensurate with the diameter of the specimen.
To the free end of each specimen of the test alloy solder copper insulated conductor with a length of 500−700 mm.
G. 2 measuring
The potentiometer of accuracy class not less than 0.05 (for floating IP is not lower than 0.01) according to GOST 9245.
Bath with pure crushed melting ice (0°C).
A set of glass tubes with a length of not less than 100 mm, an inner diameter of not more than 10 mm according to GOST 1770.
The insulating tube according to GOST 17675.
The steam thermostat of the type TP-5.
The exemplary glass mercury thermometer with a measurement range 95°C-105°C according to GOST 13646.
Copper wire (reference electrode) brand MM according to the technical documentation with T. E. D. S. relative to platinum at 100 °C (0,76±0,005) mV or SOTM-M1 N 1089. Allowed the use of copper with different values of T. E. D. this introduces the relevant amendment.
Wires with polyvinylchloride insulation for copper GOST 6323.
Switch multiple resternotomy.
G. 3 Preparation of the measurements
G. 3.1 the Free ends of the samples are placed in glass vials filled with transformer oil according to GOST 982 no less than one-tenth of the height of the tube. Vials set in a bath of melting ice.
G. 3.2 Assemble the measuring circuit according to GOST 8.338, Annex A.
G. 3.3.Prepare the thermostat.
G. 3.4 Place the working end in a glass test tube with a length of 450−500 mm.
G. 3.5 Down the tubes with a bunch of samples and exemplary glass mercury thermometer to a depth of not less than 300 mm in a thermostat and kept at the temperature of boiling water 15 min.
G. 4 measurements
Measurements begin with exemplary glass mercury thermometer, then measure the T. E. D. S. of the samples under test in a pair with copper wire from the first sample to the last, after which all measurements are sequentially repeated in reverse order and so on until the four samples in each row.
G. 5 Processing and evaluation of results
The measurement result should be the arithmetic mean value of the results of four measurements. The result is entered into the Protocol of arbitrary shape.
Measurement error T. E. D. S. () includes the error of the potentiometer () and the error of measurement of the temperatures of melting ice and boiling of water () that determine the error in determination of the T. E. D. S.
,
where differential T. E. D. S. a pair of alloy-copper (chromel To copper, Copel-copper, Constantan-copper TP copper respectively: ~21; ~48; ~42; and ~6,5 µv/°C).
Since errors and are random, the total error is calculated by the formula
.
The measurement error for the alloy chromel, Copel, Constantan, respectively, and TP is ~5 mV, ~7 mV, ~6 mV and ~1.5 mV.