HR系列热电偶、热电阻、一体化温度变送器
价格:电议
地区:河南省
电 话:0371-56610738
传 真:0371-56610738
::企业资质::
 
::产品简介::

防爆热电偶 
 
应用 

 

    通常和显示仪表、记录仪表等配套使用。直接测量生产现场存在碳氢化合物等爆炸的0~1300℃范围内液体、蒸汽和气体介质以及固体表面温度。

 

特点

  ●多种防爆形式,防爆性能好;
  ●压簧式感温元件,抗振性能好;
  ●测量范围大;
  ●机械强度高,耐压性能好。

 

工作原理

    防爆热电偶利用间隙隔爆原理,设计具有足够强度的接线盒等部件,将所有会产生火花、电弧和危险温度的零部件都密封在接线盒腔内,当腔内发生爆炸时,能通过接合面间隙熄火和冷却,使爆炸后的火焰和温度传不到腔外,从而进行测温。
  

主要技术参数

 

  ●产品执行标准
    IEC584
                            GB/T16839-1997
                            IEC1515
                            JB/T5518-91
                            GB3836

 
  

常温绝缘电阻

 

  ●常温绝缘电阻
    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。

  

测温范围及允差

 

  ●测温范围及允差

 
型号分度号允许误差与偶材等级
I级II级
允差值测温范围℃允差值测温范围℃
HR-WRNK±1.5℃
±0.004│t│
-40~+375
                                    375~1000
±2.5℃
±0.0075│t│
-40~+333
                                    333~1200
HR-WRMN±1.5℃
±0.004│t│
-40~+375
                                    375~1000
±2.5℃
±0.0075│t│
-40~+333
                                    333~1200
HR-WREE±1.5℃
±0.004│t│
-40~+375
                                    375~800
±1.5℃
±0.004│t│
-40~+333
                                    333~900
HR-WRFJ±1.5℃
±0.004│t│
-40~+375
                                    375~750
±1.5℃
±0.004│t│
-40~+333
                                    333~750
HR-WRCT±1.5℃
±0.004│t│
-40-~+125
                                    125~350
±1℃
±0.0075│t│
-40~+333
                                    133~350
HR-WRPS±1℃
±[1+0.003(t-1100)]
0~+1100
                                    1100~1600
±2.5℃
±0.0025│t│
0~600
                                    600~1600

  ●取证一览表

 
防爆级别防爆证号机构
dIIB T4GYB96450NEPSI
dIIB T4GYB96453NEPSI
dII CT5GYB98339NEPSI
dII CT5GYB97197NEPSI
iaIICT6GYB99412NEPSI

    注:NEPSI防爆系仪器仪表防爆安全监督检验站。

  ●防爆分组形式

 

         
                          ○电气设备类别
    Ⅰ类——煤矿井下用电气设备
    Ⅱ类——工厂用电气设备
  ○防爆等级
    防爆热电偶的防爆等级按其使用于爆炸性气体混合物安全间隙分为A、B、C三级。

类别级别试验安全间隙(MESG)mm
IIA0.9≤MESG
B0.5<MESG<0.9
CMESG≤0.5
 

  ○温度组别
    防爆热电偶的温度组别按其外露部分允许表面温度分为T1~T6。

温度组别允许表面温度℃
T1450
T2300
T3200
T4135
T5100
T685

  ●防爆级别
    EXdⅡ□T□
                            ExiaⅡ□T□
                          ●防护等级:IP65

  

接线盒形式

 
  ●dⅡBT□级●dⅡCT□级

型号命名方法

 
          

HR-W

温度仪表

  

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R

热电偶

  

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感温元件材料         分度号

M
                                    N
                                    E
                                    F
                                    C
                                    P
                                    Q
                                    R

镍铬硅-镍硅       N
镍铬-镍硅         K
镍铬-铜镍         E
铁-铜镍           J
铜-铜镍           T
铂铑10-铂         S
铂铑13-铂         R
铂铑30-铂6        B
                                    


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偶丝对数


2

单支
                                    双支


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安装固定形式

1
                                    2
                                    4
                                    5

无固定装置
                                    固定螺纹
                                    固定法兰
                                    活络管接头式

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接线盒形式

4

防爆式

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保护管直径

0
                                    1

Φ16
Φ12(Φ20)

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工作端形式

G

变截面

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HR-W

R

N

2

——

2

4

0

G

                    典型型号示例

选型须知

 

  1)型号
  2)分度号
  3)防爆等级
  4)等级
  5)安装固定形式
  6)保护管材质
  7)长度或插入深度
   例A:防爆热电偶,K型,固定螺纹M27×2,隔爆等级dIIBT4级,保护管316L长度450mm,插入深度300mm。
HR-WRN-240,K,L=450×300,M27×2,dIIBT4保护管316L。

品牌/商标

虹润

企业类型

贸易商

新旧程度

全新

原产地

福州