K type thermocouple

Productoverview:

WRN series K type thermocouple Usually by the temperature sensing element, the main component of the fixing device and install wiring box etc.. Is currently the largest amount of base metal thermocouple, the sum of the amount of other thermocouple. K type thermocouple wire diameter is 1.2 ~ 4.0mm. Positive (KP) nominal chemical composition: Ni:Cr=92:12, negative (KN) nominal chemical composition: Ni:Si=99:3, the temperature of -200~1300 DEG C.

Two, work principle:

WRN series K type thermocouple is the working principle, two different components of the conductor ends by welding, forming a loop direct temperature measuring end called the working end, the terminal end is called the cold end, also called the reference terminal. When the temperature difference between the working end and the reference end, will produce thermal current in the circuit, connected to display instrument, the instrument will indicate the corresponding temperature of the thermocouple electromotive force generated by the value of the.

The structure of K type thermocouple, is a conductor, high insulation, Magnesium Oxide jacket 1Cr18Ni9Ti stainless steel protection tube, after repeated one drawn. The product is mainly composed of armored thermocouple junction box, terminal and sheathed thermocouple components of the basic structure, and with various fixed device. Armored thermocouple type insulation shell and then two.

Three, application:

WRN series K type thermocouple has high pressure resistance, thermal bending, fast response time and durable, and its industrial thermocouple assembly, as temperature transmitter, and usually display instrument and record instrument and electronic regulator supporting the use of, at the same time as the assembly type thermocouple temperature sensing element. It can directly measure a kind of production process from the 0~1300 temperature range of liquid, steam and gas solids and surface temperature.

Four, main features:

1, the detection (measuring component thermocouple) is one of the most commonly used temperature sensor industry.Must be equipped with two meter, the utility model has the advantages of:

The high accuracy of measurement. Thanks to direct contact with the object, is not affected by the intermediate medium.

The wide range of measurement. The commonly used thermocouple from -50~+1600 DEG C can be continuously measured, some special thermocouple minimum measured to -269 degrees (such as gold, iron nickel chromium) up to +2800 DEG C (such as tungsten rhenium).

The structure is simple, easy to use. A thermocouple is usually composed of two different metal wires, and the limitation of size and opening, with protective sleeve, it is very easy to use.

2, according to the temperature measurement range and accuracy, the corresponding selection of thermocouples

The use of temperature at 1300~1800 DEG C, and accuracy is relatively high, generally used in the B type thermocouple; the precision requirements, the atmosphere allows available tungsten rhenium thermocouple, above 1800 DEG C, generally used tungsten rhenium thermocouple; temperature at 1000~1300 degrees and relatively high precision by S type thermocouple and N type thermocouple; at 1000 DEG C general thermocouple thermocouple type K and type N, E type generally lower than 400 DEG C by thermocouples; 250 DEG C and negative temperature measurement with the general T type thermocouple, temperature stability and high precision T type thermocouple.

Five, technical parameters:

Product executive standard

IEC584

IEC1515

GB/T16839-1997

JB/T5582-91

Nominal pressure thermocouple: generally refers to the static outer protective tube can withstａnd working temperature and pressure rupture.

Thermocouple: minimum insertion depth should be not less than 8-10 times the diameter of the protective sleeve (Frederick product exception)

Insulation resistance: when the ambient air temperature is 15-35 DEG C, relative humidity is less than 80% when the insulation resistance is more than 5 megohm (voltage 100V). With the splash proof junction box of the thermocouple, when the relative temperature is 93 + 3 DEG C, the insulation resistance of more than 500 billion euro (voltage 100V)

The insulation resistance of high temperature thermocouples under high temperature, the thermal electrode (including double type) and the insulation resistance between protection tube and double heat electrode (per meter) should be greater than the value specified under the table.

1000Ω.m。">Armored thermocouple at ambient temperature for 20 + 15 ~ C, the relative humidity is not more than 80%, the test voltage is 500 + 50V (DC) insulation >1000 resistor between.M electrode and outer tube.

Sixth, code:

Note: 1, according to the ordering protocol I thermocouple;
2, the remaining material according to the ordering protocol protection tube.
Seven, design selection and ordering information:
1, model;
2, division no.;
3, precision grade;
4, protection tube material and form;
5, the length or depth of insertion.
Customer service service commitment:
1, my company sold Zhongwei thermocouple series product quality problems within twelve months, responsible for free maintenance.
2, the warranty period if the products of our company have any quality problems, our company is responsible for free repair or replacement.
3, the warranty period if the user use undeserved, cause damage to the product, our company is responsible for the maintenance, collect the damaged parts cost.
4, after the warranty period of product quality problems, our company is responsible for the maintenance, collect the damaged parts cost.
5, if the user needs to our service, our company in the province of the user service personnel arrived at the scene within 12 hours, arrived at the scene 48 hours outside users.