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temperature sensor
Key words:
Classification:
Temperature sensor
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- Description
-
- Commodity name: temperature sensor
Armored thermocouple, also known internationally as inorganic insulated thermocouple, is a combination of stainless steel protection tube, magnesium oxide insulating powder, thermocouple wire, a solid whole compacted by the mold, with pressure resistance, shock resistance, can be flexed, miniaturization of the thermal response time is fast, easy to install, long service life, good mechanical strength, etc., is widely used in aerospace, atomic energy, petroleum, chemical metallurgy, machinery, electric power and other industrial sectors and research and teaching fields. It is widely used in aerospace, atomic energy, petroleum, chemical metallurgy, machinery, electric power and energy, etc
► Products
In the process of industrial production, temperature is one of the important parameters to be measured and controlled.In temperature measurement, thermocouple is extremely widely used, it has a simple structure, easy to manufacture, wide measuring range, high accuracy, small inertia and output signal is easy to remote transmission and many other advantages.In addition, because the thermocouple is a passive sensor, the measurement does not need an external power supply, the use is very convenient, so it is often used as a measurement of furnace, pipeline temperature of gas or liquid and solid surface temperature.
► Model Meaning
► Technical Parameters
Type of working end
Structure
Characteristics
Insulation type
Slower thermal response, high mechanical strength, long service life, anti-electromagnetic interference
Press shell type
Fast thermal response, high mechanical strength,long service life, not suitable for electromagnetic interference in the occasion of temperature measurement.
Separate insulation type
Co-insulated type
Outcropping type
Fastest thermal response, low mechanical strength, long service life
► Product Advantages
1、Simple assembly, easy to replace;
2, Pressure spring type temperature sensing element, good anti-vibration performance;
3、High measurement accuracy;
4, large measuring range (-200 ℃ ~ 1300 ℃, special circumstances -270 ℃ ~ 2800 ℃);
5, fast thermal response time;
6, high mechanical strength, good pressure resistance;
7、High temperature resistance up to 2800 degrees;
8, Long service life.
► Instructions for use
The installation of thermocouple and RTD, should pay attention to be conducive to the accuracy of temperature measurement, safety, reliability and easy maintenance, and does not affect the operation of equipment and production operations.To meet the above requirements, in the choice of thermocouple and RTD installation parts and insertion depth should pay attention to the following points:
1, in order to make thermocouple and RTD measuring end and the measured medium between the full heat exchange, should be a reasonable choice of measurement point location, try to avoid valves, elbows and piping and equipment near the dead center of the installation of thermocouples or RTDs.
2, with a protective sleeve thermocouple and RTD have heat transfer and heat loss, in order to reduce the measurement error, thermocouple and RTD should have enough insertion depth:
(1) For measuring the temperature of the fluid in the center of the pipeline thermocouple, generally should be inserted into the center of the pipeline at its measuring end (vertical installation or inclined installation), such as the diameter of the pipeline of the fluid to be measured is 200 mm, then the thermocouple or RTD insertion depth should be selected 100 mm;
(2) for high temperature, high pressure and high speed fluid temperature measurement (such as the main steam temperature), in order to reduce the resistance of the protective sleeve to the fluid and prevent the protective sleeve under the action of the fluid fracture, can be taken to protect the tube shallow insertion or the use of heat-sleeve thermocouple, shallow insertion of thermocouple protective sleeve, its insertion into the depth of the main steam pipeline should be not less than 75mm; heat-sleeve thermocouple standard insertion depth of 100mm;
(3) If you need to measure the temperature of the flue gas in the flue, despite the flue diameter of 4 m, thermocouple or RTD insertion depth of 1 m can be;
(4) When the depth of insertion of the measuring element exceeds 1 m, it should be installed vertically as far as possible, or installed with a support frame and a protective sleeve.
Key words:- temperature sensor
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