A na-ejikarị okwu "thermowell" na "tube nchedo" eme ihe na nleba na njikwa okpomọkụ ụlọ ọrụ. N'agbanyeghi na ojiji ha yitere, enwere ihe di iche n'etiti abuo:

Thermowell:
Thermowell bụ tube mechiri emechi nke etinyere n'ime arịa ma ọ bụ ọkpọkọ iji kpuchido ihe mmetụta okpomọkụ, dị ka thermocouple ma ọ bụ ihe nchọpụta okpomọkụ (RTD), site na mmiri usoro. Thermowells na-ekwe ka itinye ihe mmetụta okpomọkụ n'ime usoro ahụ mgbe ọ na-enye ihe mgbochi nke na-echebe ihe mmetụta site na nrụrụ, abrasive, ma ọ bụ ọnọdụ nrụgide dị elu nke mmiri usoro. Emebere thermowells ka ọ kewapụ ihe mmetụta okpomọkụ na gburugburu ebe a na-eme ya ka ọ na-enye ohere nha okpomọkụ ziri ezi.

tube nchekwa:
N'aka nke ọzọ, tube nchebe bụ tube ma ọ bụ n'ọbọ nke na-arụ ọrụ yiri nke ahụ na thermowell. A na-eji ya echebe ihe mmetụta okpomọkụ site na ọnọdụ usoro siri ike, dị ka okpomọkụ dị elu, ikuku na-emebi emebi ma ọ bụ abrasives. A na-ejikarị tubes nchebe na ngwa ebe ikpughe ihe mmetụta okpomọkụ kpọmkwem na gburugburu usoro nwere ike ịkpata mmebi ihe mmetụta ma ọ bụ ọgụgụ okpomọkụ na-ezighi ezi.

Iji chịkọta ọnụ, ebe a na-eji ma thermowells na tubes nchebe na-echebe ihe mmetụta okpomọkụ, a na-emekarị thermowells na njedebe mechiri emechi ma tinye ya n'ime arịa ma ọ bụ ọkpọkọ, ebe tubes nchebe na-adịwanye mma ma nwee ike iji ya na ngwa dị iche iche. Haziri iji chebe ihe mmetụta okpomọkụ site na gburugburu ebe ọjọọ.