The working principle of armored thermocouple
How does armored thermocouple work? In the case of
1, the application of armored thermocouple
Usually and display instruments, recording instruments, electronic computing and other supporting the use of. Direct measurement of liquid, vapor and gaseous media and solid surface temperatures in the range of 0 ° C to 1300 ° C of explosives such as hydrocarbons present in the production site.
2, the characteristics of armored thermocouple
· A variety of explosion-proof form, explosion-proof performance is good;
· Spring-type temperature sensing element, good anti-vibration performance;
· Large temperature range;
· High mechanical strength, good pressure resistance;
3, armored thermocouple works
Armored thermocouple is the use of the principle of gap explosion-proof, designed with sufficient strength of the junction box and other components, will produce all the spark, arc and dangerous temperature parts are sealed in the junction box cavity, when the cavity explosion, Through the joint surface gap flame and cooling, so that after the explosion of the flame and temperature can not pass outside the cavity, so as to conduct a flameproof.
4, the main technical parameters of armored thermocouple
Product implementation standards: IEC584, EC1515, GB / T16839-1997, JB / T5518-91, GB3836
5, armored thermocouple at room temperature Insulation resistance:
Thermocouple at ambient temperature of 20 ± 15 ° C, relative humidity of not more than 80%, test voltage of 500 ± 50V (DC) between the electrode and the insulation resistance of the casing> 1000Ω.m
In the use of thermocouple compensation wire must pay attention to the model match, the polarity can not be wrong, compensation wire and thermocouple connection side of the temperature can not exceed 100 ℃.
