铠装式热电偶WRNK12

品牌:xbl 型号:WRNM12 品种:铠装热电阻 分度号:K/E/T/NJ 测量范围:0-1000（℃） 允差等级:A 热响应时间:&plu*n;1（s） 联接型式:固定螺纹 外形尺寸:8*2500（mm）

WR_K系列铠装热电偶

概述

WR_ K系列铠装热电偶是本公司精心设计制造的新一代系列产品。本系列产品*合国际电工委员会（IEC）标准，技术性能可替代同类*产品。广泛用于航空、原子能、石油、化工冶金、电力、机械等现代化设备和高科技领域，也适合于*成套设备的维修更换或输出项目的成套配套以及技术高招项目的配套。

铠装热电偶与一般工业热电偶一样，与显示仪表灯配套，在*得使用范围内对气体、液体介质或固体表面温度进行自动检测或自动调节。

铠装热电偶的构造

由于铠装热电偶的使用要求不同，其外形也往往存在很大差异，但是她们的基本结构大致相同，通常由铠装热电偶元件，安装固定装置和接线盒等主要部件组成。

1. 铠装热电偶元件：它是由金属套管，*缘材料（一般为氧化粉）和热电偶线三者组合而成的坚实体。按测量端的结构形式，一般可分为*缘型、接壳型、露端型、和分离式*缘型供用户选用，如果用户没有指明测量端的结构形式，则提供*缘型或接壳型。
2. 安装固定装置，其结构形式可分为：无固定装置，固定卡套螺纹可动卡套螺纹，固定卡套法兰，可动卡套法兰和外保护管式等。
3. 接线方式：其结构可分为，瓷接线板、简易式，同径保护帽式，*溅接线盒式，*水接线盒式，隔爆接线盒式，插座式、弹簧压着式、手柄式、带补偿导线等。

The composition structure of sheath thermocouples

The appearances of sheath thermocouples are greatly differential due to their different use requirements. But their basic structures are roughly the same. They are usually composed to the main components such as armoured thermocouple elements, mounted fixing devices, connection boxes and so on .

Functional principle

The operational principle of sheath thermocouples is the same as that of the ordinary industrial thermocouples. It bases itself upon See beck effect, i.e. two homogeneous conductors with different constituents (hot electrode) compose the closed loop, when two ends exist the temperature gradient , the current goes through in the loop, therefore Seebeck electrical potential – thermoelectric potential is in between the two terminals.

Features

1. Large measuring range: this serial sheath thermocouple are of wide specification scope, complete varieties, which is fit for various measuring occasions. They may be used between -200C and +1600C

2. Easy mounting& use: the sheath thermocouple material may wind 5 circles around the barrels whose exterior diam. is 5 times large than the material itself. It may also bend in multi-positions.

3. Rapid reaction speed: compared with *embly t*e thermocouples, it has *aller exterior diam. and fewer capacity , thus it may rapidly reacts to minimal temperature changes. This is esp. obvious for micro sheath thermocouples

4. Long use life: *embly t*e thermocouple is apt to cause the accidents such as thermoelectric potential deterioration, disconnection etc, whereas WR_K serial sheath thermocouple uses magnesia for its insulation with fine air-tightness & compactibility ,high density and long life.

5.Excellent mechanical strength and pressure resistance: it may be safely used under awful conditions such as strong vibration or corrosion low or high temperature and so on. Sheath thermocouple may maximumly bear 3*10⁵kpa / cm²pressure.

6. The external diam. size range of sheath thermocouples: we may furnish dia.0.25mm~0.8mm sheath thermocouple materials external diam. to the customers. Dia.12mm products to be special order

7. The max. length of sheath thermocouple materials may reach to 500m.

8. Sheath thermocouple core numbers: we may offer single t*e (2-core), double t*e (4-core), triple t*e (6-core) various sheath thermocouples.

The composite material of the sheath thermocouple heat electrode

Code	+ Grade	- Grade
NK	Ni Cr Si	Ni Si
KK	Ni Cr	Ni Si(Al)
EK	Ni Cr	Cu Ni(konsdtantan)
SK	Pt Rh 10	Pt
RK	Pt Rh 13	Pt
BK	Pt Rh 30	Pt Rh 6