雙金屬溫度計使用說明書INSTRUCTIONS OF Bimetallic thermometer

天長市康泰儀表電纜廠

目錄Content

一、 概述General …………………………………………… 1

二、 工作原理Operation Theory ………………………… 1

三、 結構 Structure …………………………………………

四、 主要技術參數 Main technical parameter ……………

五、 安裝與使用 Installation and Operation ………………

六、 訂貨須知 Order instruction ……………………………

七、 型號命名 Type description ……………………………

八、 附錄 Attachment ………………………………………

一、概述General

雙金屬溫度計是一種適合測量中、低溫的現場檢測工業儀表，可用來直接測量氣體、液體和蒸汽的溫度。帶電接點雙金屬溫度計能在工作溫度超過給定值時，自動發出控制信號切斷電源或報警。

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.

防爆雙金屬溫度計可以在現場存在碳氫化合物等爆炸物環境中測溫。

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

帶熱電偶（阻）一體式雙金屬溫度計，保護管內置熱電偶（阻）。即可以現場顯示溫度，亦可以遠距離傳輸信號。

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

雙金屬溫度計采用多圈直螺旋形雙金屬片，一端固定，另一端（自由端）連接在芯軸上，軸向型溫度計指針直接裝在軸上，徑向型溫度計指針通過轉角簧與芯軸連接。當溫度變化時，感溫元件自由端旋轉，經芯軸傳動指針在刻度盤上指示出被測介質溫度的變化值。

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.

電接點雙金屬溫度計是利用溫度變化時帶動觸點變化,當其上下限觸點接觸或斷開的同時，使電路中的繼電器動作，從而自動控制及報警。

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。

防爆雙金屬溫度計是利用間隙隔爆原理，設計具有足夠強度的接線盒等部件，將所有會產生火花、電弧和危險溫度的零部件都密封在內腔內，當內腔內發生爆炸時，能通過結合面間隙熄火和冷卻，使爆炸后的火焰和溫度不傳到腔外。

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.

帶熱電偶（阻）一體化雙金屬溫度計中的熱電偶（阻）工作原理詳見熱電偶（阻）使用、安裝及維護手冊。

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、結構structure

1、分類classification

A、按溫度計的主要功能分為：

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

a）指示式 b）帶電接點式

a) indication type b) with switch

B、按溫度計的環境條件分為：

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

a）普通型 b）保護型 c）防爆型

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

C、按溫度計指示裝置與檢測元件的連接方式分為：

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

a）軸向型 b）徑向型 c）135°角型 d）萬向型

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

D、按溫度計的指示裝置分為：

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

a）無指示調整 b）帶指示調整

a) without indication adjustment b) with indication adjustment

E、按溫度計安裝方式分為：

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

a）無固定裝置 b）可動外螺紋 c）可動內螺紋 d）固定螺紋 e）固定法蘭 f）卡套螺紋 g）卡套法蘭

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、測量端形式measured ends type

3、外形與尺寸outlook and size

4、安裝固定形式fixed installation type

四、主要技術參數main technical parameter

1、執行標準executive standard

JB/T8803

GB 3836

2、標度盤公稱直徑 dial nominal diameter

  Φ60 、Φ100、Φ150

3、測量范圍measuring range

-80～500℃

4、準確度等級precision degree

1.0 1.5

 正常1.5級，特殊需要可按協議提供1.0級。

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

5、公稱壓力nominal pressure

一般是指在室溫下保護管能承受的靜態外壓而不破裂。試驗壓力取公稱壓力的1.5倍。允許工作壓力不僅與保護管材料、直徑、壁厚有關，還與結構形式、安裝方法、插入深度以及被測介質的溫度、流速和種類有關。

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、熱響應時間Hot response time

熱響應時間系數指被測介質自某一溫度（室溫水）階躍變化到另一溫度（沸水），帶熱電偶（熱電阻）感溫元件達到整個溫度變化范圍50%的瞬時止所需要的時間，雙金屬溫度計的熱響應時間不超過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、防護等級protection degree

  IP65

8、絕緣電阻 insulated resistance

電接點溫度計的輸出端子與接地端子（或外殼）之間及個輸出端子之間的絕緣電阻按下表規定：

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、設定點誤差 design point error

設定點誤差應不超過基本誤差限的1.5倍。

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

10、切換差 switch difference

切換差應不超過基本誤差限的1.5倍。

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

11、切換重復性 switch repetition

切換重復性極限范圍不大于基本誤差限值的1/2。

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

12、防爆等級Explosion-proof degree

溫度計的防爆性能符合儀器儀表防爆安全監督檢驗站規定，防爆等級為Ex dⅡCT4～T6（ⅡC僅含氫氣）

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僅含氫氣）。

五、安裝與使用 installation and usage

由于雙金屬溫度計感溫元件繞制的長度控制在70mm左右，為了使雙金屬溫度計，要求插入介質中的長度≥70mm。特殊情況可以做到40mm必須在訂貨前面議。

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.

不停機更換表芯方法：先旋松在設備上溫度計保護管上的壓緊螺母，再把表芯旋出，更換新表芯。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.

當被測介質流速高，有旋渦狀的流體工況時，需加裝保護套管。

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

雙金屬溫度計在保管、使用安裝及運輸中，應避免碰撞保護管。

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

  各類雙金屬溫度計不宜用在測量敞開容易內介質溫度，帶接點溫度計，不宜在工作振動較大的控制回路中使用。溫度計在正常使用的情況下，應予定期檢驗，一般以每隔6個月檢驗一次為宜。

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.

雙金屬溫度計安裝時，其固定方式若為可動螺紋，可把表頭放到需要觀察的方位，再旋緊可動螺紋；若為錐形固定螺紋，則把溫度計旋入套管前先用生料帶包住螺紋，然后旋至所需要觀察的方位。嚴禁強行扭轉表頭，損壞溫度計，若要轉動表頭方位，必須旋松可動連接螺紋，表頭方位擺正后，再旋緊連接螺紋，具體安裝形式見下圖：

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：

電接點雙金屬溫度計接線方法 wiring methods of bimetallic thermometer with switch

 防爆雙金屬溫度計使用注意事項 using notes of explosion-proof bimetallic thermometer

1）、外接地端子必須可靠接地；

Outer earthing ends must be earthed unfailingly；

2）、接線時導線應無飛線，保證其電氣間隙和爬電距離不小于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）、接線盒蓋擰緊后用內六角扳手逆時針轉動防松螺釘，稍用力將蓋頂住（手用力大不開蓋即可）；

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）、使用過程中嚴禁拆卸任何部位；

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

5）、現場安裝必須符合“中華人民共和國爆炸危險場所電氣安全規程（試行）的規定”

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).

 防爆雙金屬溫度計維護與修理

Maintenance and repairing for explosion-proof type bimetallic thermometer

1）、要經常清除隔爆產品外露部分的雜物和易燃物，保持外露部分的清潔，其zui高表面溫度不得超過130℃；定期檢查接線盒蓋，引入裝置密封是否良好，安裝是否牢固，防松裝置是否有效，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）、當電纜引入裝置的密封蓋，電纜和接線盒上的O形密封圈，出現老化現象時應及時從我廠購買相同的零件予以更換，更換時，不允許采用任何代用品；

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）、其余故障均返廠修理，不得自行拆卸，否則后果自負。

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

六、訂貨須知 order notice

訂貨時須寫明型號、測量范圍、安裝螺紋、保護管長度和外殼直徑、準確度等級等技術參數，用戶有特殊要求時，須具體說明。

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、型號命名type naming

一般型雙金屬溫度計

Bimetallic thermometer for general type

電接點雙金屬溫度計

Bimetallic thermometer with switch

防爆型雙金屬溫度計

Explosion-proof type bimetallic thermometer

帶熱電偶（阻）一體化雙金屬溫度計

Integral bimetallic thermometer with TC and RTD

附錄

Attachment

防爆標志Explosion-proof mark

雙金屬溫度計的防爆標志表示方法如下：

Explosion-proof Marks of bimetallic thermometer as followings:

d Ⅱ　 □　 　T□

溫度組別（1～6）

Temperature degree

防爆等級（A、B、C）

Explosion-proof degree

工廠用電氣設備

Electric equipment for facture

隔爆型

Explosion-proof type

防爆等級 Explosion-proof degree

雙金屬溫度計的防爆等級按其適用于爆炸氣體混合物zui大安全間隙分為A、B、C三級。

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

溫度組別　Temperature group