Analysis of industrial thermocouple breakdown reachs a processing technique

Industrial production temperature is measured in, industrial thermocouple also often can appear now and then various breakdown, bring the accuracy that temperature measures noisy, bring the trouble on the job to employee. To can handle the of all kinds trouble that industrial thermocouple aborning appears quickly, article opposite produced analysis of breakdown of thermocouple of the industry in the job and processing technique to have detailed introduction. One, industrial thermocouple is measured in manufacturing temperature in, if discover the hot electromotive force of thermocouple compares real numerical value small, the likelihood has the following reason to cause: 1, short circuit. 2, compensation lead burns out because of be isolated from and short circuit. 3, the short circuit between column of the wiring inside thermocouple wiring box. 4, compensation lead and thermocouple polarity are received instead 5, compensation lead and thermocouple do not match. 6, temperature of thermocouple Leng Duan is exorbitant. 7, insert deepness to be mixed not quite installation place is wrong. Correct processing technique: 1, if classics examination is caused as a result of moisture, but if stoving; is isolated from as a result of porcelain tube undesirable, should give change. 2, handle short circuit new insulation or change to compensate lead newly. 3, open wiring box, wiring board clean down. 4, receive afresh correct. 5, the compensation lead that changes to be the same as a type. 6, the join lead of thermocouple changes compensation line, make Leng Duan removeds high temperature area. 7, change installation position and insert deepness. 2, industrial thermocouple is measured in manufacturing temperature in, if discover the hot electromotive force of thermocouple compares real numerical value big, the likelihood has the following reason to cause: 1, insert deepness insufficient or installation place is wrong. 2, compensation lead and thermocouple model do not match. 3, hot electrode is degenerative. 4, thermocouple reference carries temperature on the high side. 5, interference signal is entered. Correct processing technique: 1, the change is installed [net of industrial electric equipment - Cnelc] holds the position or insert deepness 2, change the compensation lead of same type. 3, change thermocouple. 4, adjust reference to carry temperature or undertake correction. 5, the examination violates a source, give eliminate. 3, industrial thermocouple is measured in manufacturing temperature in, if discover error of thermocouple electromotive force is big, the likelihood has the following reason to cause: 1, hot electrode is degenerative. 2, the exterior scale of thermocouple protection bushing is overmuch. 3, the installation position of thermocouple and installation method are undeserved. 4, thermocouple loop breaks a string. 5, short circuit of slotted line road (thermocouple and compensation lead) . 6, wiring column becomes loose. Correct processing technique: 1, change thermocouple. 2, the exterior scale that undertakes thermocouple protects bushing clearing. 3, change installation position and installation method. 4, find line place, join afresh. 5, change short circuit place afresh insulation. 6, column of pigheaded back-to-back line. 4, industrial thermocouple is measured in manufacturing temperature in, if discover the measuring instrument expresses a directive to be not stabilized, do not have sometimes when, on any account, the likelihood has the following reason to cause: 1, thermocouple has intermittent short circuit or intermittent ground connection phenomenon. 2, hot electrode is in a contact in wiring column undesirable. 3, thermocouple installation is not firm, happen swing. 4, hot electrode already was broken or be like be not. 5, compensation lead has ground contact or intermittent short circuit phenomenon. Correct processing technique: 1, take out the hot electrode of thermocouple from inside protecting a canal, find out breakdown to nod and give eliminate. 2, had received afresh. 3, installation is firm. 4, change new electrode. 5, find out breakdown to nod and give eliminate. CNC Milling