Thermocouple special vacuum furnace
WRRZ series Thermocouple special vacuum furnace Is a special thermocouple specially designed for vac…
Description：
Productoverview:
WRRZ series Thermocouple special vacuum furnace Is a special thermocouple specially designed for vacuum furnace users. With the rapid development of magnetic materials industry, more and more users of vacuum sintering furnace, vacuum furnace to user research, the majority of users, increase the vacuum furnace thermocouple which is a new product, and supporting the use of vacuum furnace.
Imported vacuum furnace pressure rise rate is less than 0.268Pa/h. Due to the use of gas solid structure and sealing connection strong, ensure the thermocouple pressure rise rate is less than 0.1Pa/h, can effectively guarantee the vacuum furnace without damage. Therefore, the temperature measurement of the series of products are mainly applicable to high temperature and vacuum heat treatment vacuum furnace, can replace the expensive imported products.
Two, work principle:
WRRZ series Thermocouple special vacuum furnace It is composed of two different components of the grounding conductor ends of synthetic circuit, when the two junction temperature at the same time, it will produce thermal current in the loop. If the working end and the reference thermocouple endthere is atemperaturedisplay, will be a corresponding display instrument instructions from thermocouples thermoelectric temperature value.
Thermocouple thermoelectric heat will increase with the increase of temperature measurement terminal, its sizeonly withthermocouple materials and ends of the temperature, and thermal electrode length and diameter of the independent. All kinds of rhodium thermocoupleappearanceoftenbecause the needs and not the same, but their basic structures are roughly the same, usually composed of a thermal insulating sleeve, electrode protection tube and terminal box main components.
Three, special features:
1, selected in line with the IEC international standard index number (S) of platinumrhodium;
2, the assembly structure, the part decomposition performance is good, easy to replace;
The special heat-resistant stainless steel 3, practical and beautiful sealing structure, can be used for a long time at 1300 c..
Four, technical parameters:
1, accuracy: + 0.25%t;
2, temperature range: 0 to 1300 DEG c;
3, Division No.: S;
4, connection: flange connection PN1.0; DN10;
5, electrical interface: M16 * 1.5.
Five, note the use and installation requirements:
1, we must pay attention to the use of the corresponding type of thermocouple wire, can not take the wrong polarity, temperature compensation and thermocouple wire connecting terminal can not exceed 100 DEG C.
2, when the time constant of thermocouple or temperature control, instrument display although the temperature fluctuation is small, but the actual temperature fluctuations may be large. In order to measure the temperature accurately, should choose the time constant of thermocouple.
3, in accordance with the instrument wiring diagram for the correct wiring electricity, instrument display first thermocouple indexing instrument, then display the range of instrument, digital tube display and measuring instrument under the set temperature, temperature measurement instrument on digital display.
4, can not flow in the installation area of thermocouple rarely measured medium, as measured by the thermocouple tube gas temperature, thermocouple must make against the direction of flow and full contact with the gas installation.
5 in order to measure the thermocouple and thermal resistance and the measured full heat exchange medium between the measuring point should be a reasonable choice, try to avoid the valve
6, on the basis of the intermediate conductor's law, in the actual application of thermocouple temperature measurement, often using hot end welding, cold end open, cold end through the connecting wire and the display instrument connected temperature measurement system.
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