ASTM E608/E608M-13
壓實的礦物絕緣, 金屬鎧裝, 基底金屬熱電偶電纜的標準規范

Standard Specification for Mineral-Insulated, Metal-Sheathed Base Metal Thermocouples

被代替

標準號

ASTM E608/E608M-13

發布

2013年

發布單位

美國材料與試驗協會

替代標準

ASTM E608/E608M-13(2019)

當前最新

ASTM E608/E608M-13(2019)

 

 

引用標準

ASTM E165 ASTM E220 ASTM E230 ASTM E344 ASTM E585/E585M ASTM E780 ASTM E839

適用范圍

4.1 This specification describes the physical requirements of mineral-insulated, metal-sheathed base metal thermocouples and establishes suitable test criteria for their evaluation.

4.2 Standardized dimensional requirements and acceptable allowances for manufacturing variations, are given.

4.3 A set of standard tests to be applied to all thermocouples covered by this specification are described, in addition to optional tests from which applicable additional requirements may be selected.

4.4 Warning—Users should be aware that certain characteristics of thermocouples might change with time and use.

4.4.1 If a thermocouple's designed shipping, storage, installation, or operating temperature has been exceeded, the thermocouple’s moisture seal may have been compromised and may no longer prevent the deleterious intrusion of water vapor. Consequently, the thermocouple's condition established by test at the time of manufacture may not apply later after an extended period of use, and retesting may become necessary.

4.4.2 In addition, inhomogeneities can develop in thermoelements because of exposure to temperature, even in cases where the maximum exposure temperatures have been lower than the suggested upper temperature limits of Table 1. For this reason, calibration of thermocouples destined for delivery to a customer is not recommended (see S6.1).

TABLE 1 Suggested Upper Temperature Limits for Sheathed Thermocouples

Note 1—This table gives the suggested upper temperature limits for the various thermocouples in several common sheath sizes. It does not take into account environmental temperature limitations of the sheath material itself, nor does it address compatibility considerations between the thermoelement materials and the sheath containing them. The actual maximum practical temperature in a particular situation will generally be limited to the lowest temperature among the several factors involved. The purchaser should consult ASTM Manual 12⁵ and other literature sources for further information about applications.

Note 2—The temperature limits given here are intended only as a guide to the purchaser and should not be taken as absolute values nor as guarantees of satisfactory life or performance. These types and sizes are sometimes used at temperatures above the given limits, but usually at the expense of stability or service life, or both. In other instances, it may be necessary to reduce the given limits in order to achieve adequate service.

熱電偶測溫的14個問常見問題 根據測溫范圍選擇：500℃以上一般選擇熱電偶，500℃以下一般選擇熱電阻；根據測量精度選擇：對精度要求較高選擇熱電阻，對精度要求不高選擇熱電偶；根據測量范圍選擇：熱電偶所測量的一般指“點”溫，熱電阻所測量的一般指空間平均溫度；4. 什么是鎧裝熱電偶，有什么優點？在IEC1515 的標準中名稱為《mineral insulated thermocouple cable》,即無機礦物絕緣熱電電偶纜。... 為您講解熱電偶與熱電阻的不同之處 隔爆型熱電阻可用于Bla--B3c級區內具有爆炸危險場所的溫度測量。 　　Pt100:用于熱電阻、熱電偶、系列溫度儀表、溫度變送器、壓力差壓變送器、熱流道加熱器、補償電纜、控制電纜等。 　　Cu50:用于熱電阻， 熱電阻溫度計， 熱電阻校驗儀，熱電阻模擬器-銅熱電阻模擬器，銅熱電阻， 鎧裝熱電阻等。 　　... 德國WIKA熱電偶測量探桿的應用 熱電偶測量探桿的溫度探桿符合DIN 43735標準，其配置的熱電偶測量插芯需安裝在保護裝置中。無護套保護時，只建議在特殊情況下操作。這些測量插芯由多樣的礦物絕緣鎧裝電纜制成。感溫元件位于測量探桿底部。 這種設計不僅靈活，而且由很好的耐震性能。負載彈簧的設計可以保證測量插芯深入護套的底部。該溫度探桿配有壓力彈簧，可被壓至護套底部。... 熱電偶的常見問題 在IEC1515的標準中名稱為《mineralinsulatedthermocouplecable》,即無機礦物絕緣熱電電偶纜。將熱電極、絕緣物和護套通過整體拉制而形成的，外表面好像是被覆一層“鎧裝”，故稱為鎧裝熱電偶。同一般裝配式熱電偶相比，具有耐壓高、可彎曲性能好、抗氧化性能好及使用壽命長等優點。 　　五、熱電偶的分度號有哪幾種？有何特點？ 　　... 誰引用了ASTM E608/E608M-13 更多引用 ASTM A991/A991M-22 鋼制品熱處理爐溫度均勻性測量的標準試驗方法 Copyright ?2007-2022 ANTPEDIA, All Rights Reserved 京ICP備07018254號 京公網安備1101085018 電信與信息服務業務經營許可證：京ICP證110310號

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