The Characteristics and Application of Armored Micro - thermocouple
The characteristics and application of armored micro thermocouple In the case of
Armored thermocouple works:
Two different components of the conductor at both ends of the welding, the formation of the loop, the temperature directly called the end of the work, the terminal end called cold end, also known as the reference side. When the working side and the reference side of the existence of temperature difference, it will generate heat in the loop, connected to the display instrument, the instrument will indicate the thermocouple generated by the corresponding thermoelectromotive force value.
The thermoelectromotive force will increase with the increase of the temperature at the measuring end. The size of the thermoelectromotive force is only related to the thermocouple conductor material and the temperature difference between the two ends, regardless of the length and diameter of the hot electrode.
Structural principle is, by the conductor, high insulation magnesium oxide, jacket 1Cr18Ni9Ti stainless steel protection tube, after repeated drawn from one. Armored thermocouple products mainly by the junction box, terminal blocks and armored thermocouple composed of the basic structure, and with a variety of installation of fixed devices.
Micro-armored thermocouple insulation and shell-type two.
Armored thermocouples have many advantages such as bending, high pressure resistance, fast thermal response time and ruggedness. It is the same as the industrial assembly thermocouple, as a transmitter for measuring temperature, usually with instrumentation, instrumentation and electronic adjustment It can also be used as a temperature sensing element for assembled thermocouples, and it can directly measure the temperature of liquid, steam and gaseous medium and solid surface in the range of 0 ~ 800 ℃. It is suitable for temperature measurement and control of small and curved places. Chemical chemical fiber, pharmaceutical and other industries indispensable to measure the temperature device
The main technical parameters
Accuracy class: Class I or II
Nominal diameter: Φ1
Bending diameter: R ≥ 5D
Nominal pressure: normal pressure
Armored thermocouple thermal response time: the temperature changes in the step, the thermocouple output changes to the equivalent of 50% of the step change the time known as the thermal response time, with τ0.5 said.
Insulation resistance: When the ambient air temperature is 20 ± 1.5 ℃, relative humidity is not greater than 80%, the insulation type armored thermocouple and the outer casing between the insulation resistance value should meet the following table.
Flexibility: armor thermocouple radius of curvature of not less than 5 times its outer diameter.
Armored thermocouple diameter d ≤ ¢ 5mm, and a splash-proof or waterproof junction box products, the user should pay attention to the installation, the thermocouple exposed parts of the equipment must be installed support, increase the stiffness to ensure that the strong, To prevent the junction box from rocking back and forth, damage the thermocouple.
Install the fixed form
The fixture is for the user to install. In addition to non-fixed device products, armored thermocouple fixtures are: fixed card sets, movable card sets, fixed flange, movable flange four structural forms. Fixed card sets for users one-time fixed, removable card sets of users can be fixed several times.
