热电偶安装手册

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热电偶Thermocouple
型号
Type
分度号
Graduation
允差等级Tolerance Class


允差值
Tolerance Value
允差值
Tolerance Value
Measuring Range
WRN
K
±℃
-40~+375
±℃
-40~+333
±|t|
375~1000
±|t|
333~1200
绝缘电阻用MΩ表示,即为常温绝缘与热电偶长度的乘积,对于长度小于1m的热电偶按1m计算。
The unit is MΩ·m,or product of insulation resistance and thermocouple length. Thermocouple withlengthless than 1m is considered as 1m. in calculation.
WR系列热电偶
WR
WZ系列热电阻
WR
使用安装手册
Installation & Operation Manual
安徽天康(集团)股份有限公司
AnhuiTiankang (Group) Shares Co., Ltd
Index
1、概述General Description………………………………………….1
Φ2
1Cr18Ni9TI
GH3030
1Cr18Ni9Ti
GH3039
Φ3
Φ4
Φ5
Φ6
Φ8
双支式
Simplex
Φ3
Φ4
Φ5
Φ6
Φ8
热电阻Thermal Resistance
偶丝形式
FilamentForm
套管直径
TubeDiameter
套管材质Tube Material
Pt100
单支式
Simplex
Φ3
2、工作原理Operation Theory
热电偶工作原理Operation Theory of Thermocouple
热电偶工作原理是基于两种不同成分的导体两端连接成回路,如两连接端温度不同,则在回路内产生热电流的物理现象。
热电偶由两根不同导线(热电极)A和B组成,它们的一端T1是互相焊接的,形成热电偶的测量端T1(也称工作端)。将它插入待测温度的介质中;而热电偶的另一端T0(参比端或自由端)则与显示仪表相连,如果热电偶的测量端与参比端存在温度差,则显示仪表将指出热电偶产生的热电动势。
制造热电阻的材料应具有以下特点:大的温度系数,大的电阻率,稳定的化学物理性能和良好的复现性等。在现有的各种纯金属中,铂、铜和镍是制造热电阻的最合适的材料。其中铂因具有易于提纯,在氧化性介质中具有高的稳定性以及良好的复现性等显著的优点,而成为制造热电阻的理想材料。
It is based on that temperature change of material results in change of its resistance. When resistance value changes, the working instrument will display relevant temperature.
活动法兰式Movable Flange
4、主要技术参数Main Technical Parameters
产品执行标准Executive Standard
IEC1515
IEC751
GB/T16839-1997
JB/T8622-1997
测温范围及允差Measuring Range & Tolerance
热响应时间Thermal Response Time
当温度出现阶跃变化时,仪表的电流输出信号变化至相当于该阶跃变化的50%所需的时间,通常以τ表示
Whenstep change of temperature happens,τ is used to indicate the time for current output signal of instrument changes into 50% of the step change value.
WRE
E
±℃
-40~+375
±℃
-40~+333
±|t|
375~800
±|t|
333~900
WRP
S
±1℃
0~+1100
±℃
0~600
±[1+
(t-1100)]
1100~1600
±|t|
600~1600
WRR
B






±|t|
600~1700
注:t为实际温度,允许可用温度度数表示,也可用实际温度的百分数表示,取其大者。
6、可能发生的故障及维修Possible Troubles & Maintenance………7
7、运输及储存Transportation & Storage……………………………8
8、订货须知Notices in Ordering………………………………………8
9、型号命名Type Naming………………………………………………9
接线盒防护等级IP65; Protection Class of Junction Box: IP65
防水接线盒结构图 Structural Figure of Junction Box
安装固定装置Installation & Fixing Devices
卡套螺纹接头Threaded HeadwithFastener
卡套Fastener 扳手Spanner 固定卡套Fixed Fastener 可动卡套Movable Fastener
代号和尺寸
Code & Size
铠装偶外径dOuter Diameter of Armored Thermocouple
Φ8
Φ6
Φ5
Φ4
Φ3
Φ2
M
M16×
M12×
S
22
19
固定螺纹式Threaded Connector
1Cr18Ni9TI
Φ4
Φ5
Φ6
Φ8
双支式
Duplex
Φ4
Φ5
Φ6
Φ8
接线盒 Junction Box
接线盒供连接热电偶、热电阻参比端和显示仪表之用;
Junction box is for connection between reference end of thermocouple and display instrument.
热电阻Thermal Resistance
热电阻在环境温度为15~35℃,相对湿度不大80%,试验电压为10~100V(直流)电极与外套管之间的绝缘电阻≥100MΩ
Insulation resistance between electrode and outer tube is no less than 100MΩunder condition that ambient temperature is 15~35℃, relative humidity is no more than 80%, and test voltage is10~100V .).
公称压力Nominal Pressure
一般是指室温下保护管所能承受的静态外压力而不破裂,试验压力取公称压力的倍。允许工作压力不仅与保护管材料、直径、壁厚有关,还与其结构形式、安装方法、插入深度以及被测介质的温度、流速和种类有关。
It generally refers to the sustainable static pressure from outside on protection tube without breakage.It concern not only material, diameter & wall thickness of protection tube, but the structure, mounting way,insert length, flow speed and category of tested media as well.
3、结构Configuration
感温元件直径及材料Diameter & Material of Thermal Elements
热电偶Thermocouple
偶丝形式
FilamentForm
套管直径
TubeDiameter
套管材质Tube Material
E﹑J﹑T
K﹑N
S
单支式
Filament Form
2、工作原理Operation Theory………………………………………………1
3、结构Configuration…………………………………………………2
4、主要技术参数Main Technical Parameters………………………3
5、安装及使用Installation & Operation………………………………5
热电阻工作原理Operation Theory of Thermal Resistance
热电阻是利用金属导体或半导体有温度变化时本身电阻也随着发生变化的特性来测量温度的,热电阻的受热部分(感温元件)是用细金属丝均匀地绕在绝缘材料作成的骨架上,当被测介质有温度梯度时,则所测得的温度是感温元件所在范围内介质层的平均温度。
热电偶Thermocouple
热电偶在环境温度为20±15℃,相对湿度不大于80%,试验电压为500±50V(直流)电极与外套管之间的绝缘电阻≥100MΩ.m。
Insulation resistance between electrode and outer tube is no less than 100MΩ·m under condition that ambient temperature is 20±15℃, relative humidity is no more than 80%, and test voltage is 500±50V .).
热电偶的热电动势随着测量端温度的升高而增大,它的大小只与热电偶的材料和热电偶两端的温度有关,而与热电级的长度、直径无关。
Thermocouple is based on physical phenomenon that two conductor of different materials is connected to form return circuit, when temperature on both contact is different, it results in thermoelectric potential in return circuit.
Notes: t is the actual temperature. It may be indicated with temperature centigrade or percentage of centigrade, the bigger one ispreferred.
热电阻Thermal Resistance
1、概述General Description
工业用热电偶作为温度测量和调节的传感器,通常与显示仪表等配套,以直接测量各种生产过程中-40~1600℃液体、蒸汽和气体介质以及固体表面温度;
As sensor for temperature measuring and regulation, industrial-purpose thermocouple is usually connected with display meter andother meters to directly meaຫໍສະໝຸດ Baiduure temperature of liquid, vapor, gas and solid surface ranging from -40℃ to 1600℃.
工业用热电阻作为温度测量和调节的传感器,通常与显示仪表等配套,以直接测量各种生产过程中-200~500℃液体、蒸汽和气体介质以及固体表面温度。
As sensor for temperature measuring and regulation, industrial-purpose thermal resistance is usually connected with display meter andother meters to directly measure temperature of liquid, vapor, gas and solid surface ranging from -200℃ to 500℃.
分度号
Graduation
测温范围
Measuring Range
精度等级
Accuracy Class
允许偏差
Tolerance
Pt100
-200~+500
A级
±+ltl
B级
±+ltl
防护等级:IP65 Protection Class: IP65
常温绝缘电阻Insulation Resistance under Normal Temperature
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