双金属温度计说明书

人气:13 时间:2020-03-11 来源:上海傲龙仪器仪表有限公司

双金属温度计说明书

一、用途

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,并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。

双金属温度计具有无汞害、易读数、坚固和耐振等优点,可代替工业玻璃水银温度计广泛适用于工业和科研部门。

双金属温度计分为普通型、户外型、防腐型三种。普通型外壳用铁皮电镀,保护管用不锈钢,适用于室内一般场合使用。户外型外壳用铝金制造,保护管,连接柱均采用不锈钢,密封性较好,适用于室内外,一般耐腐蚀场所。防腐型外壳采用全不锈钢,保护管、连接柱可用钼二钛材料,连接部分均采用密封胶,可适用于多数腐蚀介质、气体的测量。

二、结构原理

双金属温度计感温元件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芯轴上。径向型结构指示针通过转角弹簧与芯轴连接。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被测介质温度的变化值。

电接点温度计,指针上装有动接点,固定接点装在设业指针上指针触头随温度变化旋转,当温度达到或超过设定值时,接点闭合发出信号,以达自动控制和报警的目的。

三、主要技术参数

1、温度计为轴向型、径向型、135°三种型式。

2、温度计的精度等级为1级、1.5级。

3、温度计的测量范围见表一。

4、温度计的时间常数不超过40S。

5、保护管的材料为1Cr18Ni9Ti不锈钢和钼二钛,其所能承受的分称压力为6.4MaP。

6、温度计分普通型、户外型、防腐型三种型式。

7、温度计的接点为上、下限,单限,双上限(全部常开)。

8、接点额定功率:10VA(无感负载)、最高工作电压:220V、最大工作电流:1A。

9、指示表头使用环境温度-40~85℃。

10、指示表头使用环境湿度5~100%。

11、WSS系列双金属温度计属于耐震机械仪表。

12、测量温度时应将保护管下面100mm长全部浸入被测量介质,以保持温度准确性。

13、执行标准:JB/T8803-1998

四、型号表示方法

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双金属温度计型号的组成

W S S X 4 1 1 第一位 第二位 第三位 第四位 第一位 第二位 第三位

型号示例:

表壳公称直径为φ100(mm)的轴向式普通型双金属温度计,安装方式为可动外螺纹。

型号表示:WSS-401。

五、 接点接线示意

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六、型号、规格、参考价

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注:0-50℃表尾长≥100mm,WSS-481W请注明轴芯式。

七、型号与尺寸

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八、使用和维护

1、双金属温度计保护管浸入被测介质中的长度必须大于感温元件的长度,一般浸入长度大于100mm,0-50℃量程的浸入长度大于150mm,以保证测量的准确性。

2、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,切勿使保护管弯曲变形及将表壳当扳手使用。

3、各类双金属温度计不宜用于测量敞开容器内介质温度,带接点温度计,不宜在工作振动较大场合的控制回路中使用。

4、温度计在正常的情况下,应予定期检验。一般以每隔6个月检验一次为宜。

5、电接点温度计不允许在强烈震动下工作,以免影响接点可靠性。

6、WSS万向型温度计的波纹管只有0.1mm厚,所以转向时必须旋松M4螺母、螺丝。并小心转向,切勿用力。安装时必须用两把扳手,以免损坏。

7、本产品实行三包。

九、订货须知

1、订货时须写明产品的型号、测量范围、安装螺纹、保护管长度,外壳公称直径、精度级别等技术参数。

2、需要户外型和防腐品种的须注明。

3、用户有特殊要求时,须具体注明。

I、Use

Two-metal thermometer is a suitable measure, the low temperature of the industrial scene detection instruments. Can be used to direct measurement of gas, liquid and steam temperature. Charged contact bimetallic thermometer and can work in temperature over a given value, the automatic control signals cut off the power or the police.

Bimetal thermometers with mercury-free harm, easy reading, strong and resistant to vibration, and other advantages, instead of industrial glass mercury thermometers widely applied to industrial and scientific research departments.

Two-metal thermometer into ordinary type, outdoor type, preservative-three.

Ex-general with shell plating, stainless steel and effective protection, apply to indoor use of general occasions. Al-casing of the outdoor production, protection of connecting the columns are stainless steel, seal better, apply to indoor and outdoor, general corrosion-resistant places. Use of all anti-corrosion stainless steel casing, the protection of linking the two molybdenum-titanium materials can be used to connect parts of a sealant, applicable to most corrosive medium, the gas measurement.

II、the structure principle

Two-metal thermometer temperature components used more laps straight

double-helix-shaped metal sheets. One end fixed, the other side (the Liberal side) connected to the Mandrel, axial-pointer directly with the thermometer on the Mandrel.

Radial-type structure through direct contacts with the corner of Spring Mandrel connection. When the temperature changes, temperature-free components rotation, the Mandrel transmission pointer in the dial on the instructions of the change in temperature measured media value.

Xinhua contact thermometer, with indicators on the dynamic contact, in constant contact with the guidelines established guidelines on contact with the temperature changes in rotation, when the temperature reached or exceeded settings, close contact sent a signal to achieve the purpose of automatic control and alarm.

III、the main technical parameters

1, the thermometer for the axial type, radial-type, 135 ° three types.

2, the accuracy of the thermometer as a class, 1.5.

3, the thermometer measured the scope of a table.

4, the time constant temperature not exceeding 40 S.

5, the protection of the materials for 1 Cr18Ni9Ti stainless steel and titanium molybdenum Second, the points that can bear the pressure of 6.4 MaP.

6, the thermometer at ordinary type, outdoor type, three types of anti-corrosion.

7, the contact point for the thermometer on the floor, single-limit, double the ceiling (all normally open).

8, contact Power Rating: 10 VA (no flu load).

The maximum operating voltage: 220 V.

The largest current work: 1 A.

9, the first direct use of environmental temperature table -40 ~ 85 ℃.

10, directed the first use of the environment in Table 5 to 100 percent humidity.

11, WSS series of dual-metal thermometer Seismic mechanical meters.

12, the temperature measurement should be the protection of below 100 mm long been immersed all media measurement, in order to maintain temperature accuracy.

13, implementation of the standards: JB/T8803-1998

IV、models that way

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Double models thermometers metal components

W S S X 4 1 1

first second third fourth first second third

Model examples:

Case said the diameter of φ100 (mm) of the general-axial dual-metal thermometer, for the installation of movable thread.

Model said: WSS-401.

V、contact indicate wiring

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Ⅲ Gray Line or

yellow line

Ⅰ Purple or

black-line

Ⅱ Red Line or

Green Line

VI、models, specifications, the reference price

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Note :0-50 ℃table tail length ≥ 100 mm, WSS-481W-please specify core axis.

VII、model and size

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VIII、use and maintenance

1, double the protection of submerged metal thermometer measured the length of medium temperature must be greater than the length of components, the general immersion longer than 100 mm ,0-50 ℃ range greater than the length of immersion 150 mm, to ensure the accuracy of measurement.

2, double-metal thermometer in custody, installation and use of transport, protection of the collision should be avoided, not to make the protection of deformation and Case will use the wrench.

3, various types of dual-metal thermometer should not be used to measure open containers medium temperature, contact with the thermometer, it is not appropriate in the work of vibration larger occasions the use of the control loop.

4, the thermometer under normal circumstances, should be regularly inspected. General every six months to test a suitable.

5, electrical contacts are not allowed in the thermometer under strong vibration, so as not to affect contact reliability.

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