WSS双金属温度计-温度计仪表-康泰仪表

双金属温度计使用说明书INSTRUCTIONS OF Bimetallic thermometer

天长市康泰仪表电缆厂

目录Content

一、 概述General …………………………………………… 1

二、 工作原理Operation Theory ………………………… 1

三、 结构 Structure …………………………………………

四、 主要技术参数 Main technical parameter ……………

五、 安装与使用 Installation and Operation ………………

六、 订货须知 Order instruction ……………………………

七、 型号命名 Type description ……………………………

八、 附录 Attachment ………………………………………

一、概述General

双金属温度计是一种适合测量中、低温的现场检测工业仪表，可用来直接测量气体、液体和蒸汽的温度。带电接点双金属温度计能在工作温度超过给定值时，自动发出控制信号切断电源或报警。

Bimetallic thermometer is one kind of industrial meters which is suitable for measuring low & middle temperature at the site. It is used to directly measure the temperature of gas, liquid and steam. Bimetallic thermometer with electric contact has the functions of sending out controlling signal, cutting off power or alarming automatically under the condition of operation temperature surpassing set value.

防爆双金属温度计可以在现场存在碳氢化合物等爆炸物环境中测温。

Explosion-proof type bimetallic thermometer can be used to measure the temperature at the hazard environment with explosives such as hydrocarbon etc.

带热电偶（阻）一体式双金属温度计，保护管内置热电偶（阻）。即可以现场显示温度，亦可以远距离传输信号。

For integral bimetallic thermometer with RTD or TC，its RTD or TC is situated inside the protection tube. It not only has the function of displaying the temperature but also has that of transferring the signal for distance.

 二、工作原理 Operation Theory

双金属温度计采用多圈直螺旋形双金属片，一端固定，另一端（自由端）连接在芯轴上，轴向型温度计指针直接装在轴上，径向型温度计指针通过转角簧与芯轴连接。当温度变化时，感温元件自由端旋转，经芯轴传动指针在刻度盘上指示出被测介质温度的变化值。

Bimetallic thermometer is based on bimetal bended into ring shape. One side of bimetal expands in time of being heated, which results in revolving of indicator, and then the meter indicates corresponding temperature value to pyroelectric potential.

电接点双金属温度计是利用温度变化时带动触点变化,当其上下限触点接触或断开的同时，使电路中的继电器动作，从而自动控制及报警。

For bimetallic thermometer with electric contact, the change of the temperature resultsin the change of contact. The relay When its up & down contact contacts or breaks down。

防爆双金属温度计是利用间隙隔爆原理，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内腔内，当内腔内发生爆炸时，能通过结合面间隙熄火和冷却，使爆炸后的火焰和温度不传到腔外。

Explosion-proof bimetallic thermometer is designed to make use of space explosion-proof theory, making all parts which will produce spark, arc and dangerous temperature be sealed within inner chamber. When explosion happened within inner chamber, by intermittent cooling and flameout of binding face, spark and temperature can be controlled within inner chamber after explosion.

带热电偶（阻）一体化双金属温度计中的热电偶（阻）工作原理详见热电偶（阻）使用、安装及维护手册。

About operating theory of thermocouple and TC or RTD in integral bimetallic thermometer with thermocouple and TC or RTD, please see detailed usage, installation and maintenance manual for thermocouple and TC or RTD. 

三、结构structure

1、分类classification

A、按温度计的主要功能分为：

It can be divided into the following type according to main performance of thermometer:

a）指示式 b）带电接点式

a) indication type b) with switch

B、按温度计的环境条件分为：

It can be divided into the following type according to environment condition of thermometer:

a）普通型 b）保护型 c）防爆型

a) common type b) protection type c) explosion-proof type

C、按温度计指示装置与检测元件的连接方式分为：

It can be divided into the following type according to indication set of thermometer and connecting method of inspecting component:

a）轴向型 b）径向型 c）135°角型 d）万向型

a) axial type b) radial type c) 135°angle type d) all angle type

D、按温度计的指示装置分为：

It can be divided into the following type according to indication set of thermometer:

a）无指示调整 b）带指示调整

a) without indication adjustment b) with indication adjustment

E、按温度计安装方式分为：

It can be divided into the following type according to installing method of thermometer:

a）无固定装置 b）可动外螺纹 c）可动内螺纹 d）固定螺纹 e）固定法兰 f）卡套螺纹 g）卡套法兰

a) without fixed set b) movable male thread c) movable female thread d) fixed thread e) fixed flange f) sleeve thread g) sleeve flange

2、测量端形式measured ends type

3、外形与尺寸outlook and size

4、安装固定形式fixed installation type

四、主要技术参数main technical parameter

1、执行标准executive standard

JB/T8803

GB 3836

2、标度盘公称直径 dial nominal diameter

  Φ60 、Φ100、Φ150

3、测量范围measuring range

-80～500℃

4、准确度等级precision degree

1.0 1.5

 正常1.5级，特殊需要可按协议提供1.0级。

Normally 1.5 degree. We can also achieve 1.0 degree under special requirement according to the contract.

5、公称压力nominal pressure

一般是指在室温下保护管能承受的静态外压而不破裂。试验压力取公称压力的1.5倍。允许工作压力不仅与保护管材料、直径、壁厚有关，还与结构形式、安装方法、插入深度以及被测介质的温度、流速和种类有关。

Nominal pressure means static state outer pressure which can be born by protection tube without break. Testing pressure is 1.5 times that of nominal pressure. Allowable operating pressure does not only have something with material, diameter and wall thickness of protection tube, but also has something with construction type,installation method, inserted length and temperature, flow velocity & variety of tested media.

6、热响应时间Hot response time

热响应时间系数指被测介质自某一温度（室温水）阶跃变化到另一温度（沸水），带热电偶（热电阻）感温元件达到整个温度变化范围50%的瞬时止所需要的时间，双金属温度计的热响应时间不超过40S。

Hot response time coefficient means time needed for instantaneous stop for sensor component of thermometer achieving 50% of the whole temperature changing range, and for tested media changing from one temperature(room temperature) to another temperature(boiling temperature)，Hot response time of bimetallic thermometer shall be no more than 40s.

7、防护等级protection degree

  IP65

8、绝缘电阻 insulated resistance

电接点温度计的输出端子与接地端子（或外壳）之间及个输出端子之间的绝缘电阻按下表规定：

Insulated resistance value not only between output ends and input ends of thermometer with switch, but also among each output ends, all should be in accordance with the following table：

9、设定点误差 design point error

设定点误差应不超过基本误差限的1.5倍。

Design point error shall be no more than 1.5 times that of basic error limits.

10、切换差 switch difference

切换差应不超过基本误差限的1.5倍。

Switch difference shall be no more than 1.5 times that of basic error limits.

11、切换重复性 switch repetition

切换重复性极限范围不大于基本误差限值的1/2。

 Limit range of switch repetition shall be no more than 1/2 absolute value that of basic error limits.

12、防爆等级Explosion-proof degree

温度计的防爆性能符合仪器仪表防爆安全监督检验站规定，防爆等级为Ex dⅡCT4～T6（ⅡC仅含氢气）

Explosion-proof degree of thermometer shall meet the rules stipulated in national instrument & meter explosion-proof safety supervising inspection station. Explosion-proof degree is Ex dⅡCT4～T6（ⅡC仅含氢气）。

五、安装与使用 installation and usage

由于双金属温度计感温元件绕制的长度控制在70mm左右，为了使双金属温度计，要求插入介质中的长度≥70mm。特殊情况可以做到40mm必须在订货前面议。

Because coiling length of sensor component of bimetallic thermometer is about 70mm, the length of inserted parts into tested media should be more than 70mm in order to keep the precision of bimetallic thermometer. Under special condition, we can also achieve 40mm. But must keep contact with seller before ordering.

不停机更换表芯方法：先旋松在设备上温度计保护管上的压紧螺母，再把表芯旋出，更换新表芯。Replacing methods of meter core without stopping machine: first loose impacted nut on protection pipe of thermometer in the equipments. Then screw out the meter core. After that you can replace the meter core.

当被测介质流速高，有旋涡状的流体工况时，需加装保护套管。

Protection tube should be added under the condition of high flow velocity of inspected media and gyrate liquid.

双金属温度计在保管、使用安装及运输中，应避免碰撞保护管。

Protection tube shall be effectively protected from bumping during storage, transportation and installation.

  各类双金属温度计不宜用在测量敞开容易内介质温度，带接点温度计，不宜在工作振动较大的控制回路中使用。温度计在正常使用的情况下，应予定期检验，一般以每隔6个月检验一次为宜。

Bimetallic thermometer is not suitable with media in open container and thermometer with switch is not suitable with control return circuit with strong shock. Under normal operation, bimetallic thermometer shall be inspected routinely at interval of 6 months.

双金属温度计安装时，其固定方式若为可动螺纹，可把表头放到需要观察的方位，再旋紧可动螺纹；若为锥形固定螺纹，则把温度计旋入套管前先用生料带包住螺纹，然后旋至所需要观察的方位。严禁强行扭转表头，损坏温度计，若要转动表头方位，必须旋松可动连接螺纹，表头方位摆正后，再旋紧连接螺纹，具体安装形式见下图：

When installing bimetallic thermometer, if its fixing method is movable thread, first put meter head in the observational place, then tighten the movable thread; if it is for cone-shaped fixed thread, first wrap the thread with plastic tape before putting thermometer into tube, then put meter head in the observational place. It is forbidden to turn meter head with force, and to break thermometer. If

you want to change the direction of meter head, first step is to loose the movable connecting thread, then put the meter head in right direction, next tighten connecting thread，About the installation in detail, please see the following picture：

电接点双金属温度计接线方法 wiring methods of bimetallic thermometer with switch

 防爆双金属温度计使用注意事项 using notes of explosion-proof bimetallic thermometer

1）、外接地端子必须可靠接地；

Outer earthing ends must be earthed unfailingly；

2）、接线时导线应无飞线，保证其电气间隙和爬电距离不小于3mm；

While wiring, lead wire should have no burrs. Make sure that electrical space and creep age distance should be no less than 3mm；

3）、接线盒盖拧紧后用内六角扳手逆时针转动防松螺钉，稍用力将盖顶住（手用力大不开盖即可）；

Tighten inner hex loose-proof bolt with hex spanner in anticlockwise direction after tightening the cover of junction box. Meanwhile hold the cover with a little force；

4）、使用过程中严禁拆卸任何部位；

It is forbidden to disassemble any parts of the products during operation.

5）、现场安装必须符合“中华人民共和国爆炸危险场所电气安全规程（试行）的规定”

For site installation, it must meet the requirement speculated in the state’s administrative regulations and rules on explosion protection and electric safety (try to executive).

 防爆双金属温度计维护与修理

Maintenance and repairing for explosion-proof type bimetallic thermometer

1）、要经常清除隔爆产品外露部分的杂物和易燃物，保持外露部分的清洁，其zui高表面温度不得超过130℃；定期检查接线盒盖，引入装置密封是否良好，安装是否牢固，防松装置是否有效，接地是否可靠；

Frequently clean the exposed parts of explosion-proof products, where is duty and easy to burn. Keep clean of exposed parts. Max surface temperature can not exceed 130℃. Regularly check cover of junction box. To check if seal of entry equipment is good or not; to check its installation is tight or not; to check loose-proof equipment is effective or not; not check earthing is reliable or not；

2）、当电缆引入装置的密封盖，电缆和接线盒上的O形密封圈，出现老化现象时应及时从我厂购买相同的零件予以更换，更换时，不允许采用任何代用品；

When aging does happened to seal cover of cable entry equipment, O type seal rings on cable and junction box, please replace them in time with parts produced by our company. When replacing, other parts not produced by our company are forbidden；

3）、其余故障均返厂修理，不得自行拆卸，否则后果自负。

For other failures, please return to our company to repair. Disassemble by yourselves is forbidden, otherwise you will take the responsibility。

六、订货须知 order notice

订货时须写明型号、测量范围、安装螺纹、保护管长度和外壳直径、准确度等级等技术参数，用户有特殊要求时，须具体说明。

Technical parameters shall be indicated clearly while ordering including type, measuring range, installation thread, length of protection pipe, case diameter, accuracy degree etc，the user shall indicate special demands in details if necessary.

七、型号命名type naming

一般型双金属温度计

Bimetallic thermometer for general type

电接点双金属温度计

Bimetallic thermometer with switch

防爆型双金属温度计

Explosion-proof type bimetallic thermometer

带热电偶（阻）一体化双金属温度计

Integral bimetallic thermometer with TC and RTD

附录

Attachment

防爆标志Explosion-proof mark

双金属温度计的防爆标志表示方法如下：

Explosion-proof Marks of bimetallic thermometer as followings:

d Ⅱ　 □　 　T□

温度组别（1～6）

Temperature degree

防爆等级（A、B、C）

Explosion-proof degree

工厂用电气设备

Electric equipment for facture

隔爆型

Explosion-proof type

防爆等级 Explosion-proof degree

双金属温度计的防爆等级按其适用于爆炸气体混合物zui大安全间隙分为A、B、C三级。

Explosion-proof degree of bimetallic thermometer can be divided into three degrees-A, B, C according to Max. safety space of explosion gas composition.

温度组别　Temperature group