Haina, Waea Tahanga Chromel Alumel Rahi Rerekē mō te Hanga me te Wheketere Pūoko Mahana Momo K

Waea Tahanga Chromel Alumel Rahi Rerekē mō te Pūoko Pāmahana Momo K

Whakaahuatanga Poto:

He pūoko te Thermocouple e whakamahia ana hei ine i te pāmahana. E rua ngā waewae waea o ngā thermocouple i hangaia mai i ngā konganuku rerekē. Ka honoa ngā waewae waea ki tetahi pito, ka hangaia he hononga. Koinei te hononga e inehia ai te pāmahana. Ina pāngia te hononga e te huringa pāmahana, ka hangaia he ngaohiko. Kātahi ka taea te whakamārama i te ngaohiko mā te whakamahi i ngā ripanga tohutoro thermocouple hei tatau i te pāmahana.
Ko te waea takahuri wera NiCr-NiAl (Momo K) ka kitea te whakamahinga whānuitia i roto i ngā takahuri wera whakarewa katoa, i te pāmahana neke atu i te 500 °C.

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Waea Tahanga Chromel Alumel Rahi Rerekē mō te Pūoko Pāmahana Momo K

Ko te momo K (CHROMEL vs ALUMEL) e whakamahia ana i roto i ngā hau whakahāngai, kore mahi, whakaiti maroke rānei. He wā poto noa iho te pānga ki te korehau. Me tiaki mai i ngā hau whanariki me ngā hau whakahāngai pakupaku. Pono, tika hoki i ngā pāmahana teitei.

1.MatūCte whakahē

Rauemi	Te hanganga matū (%)
Rauemi	Ni	Cr	Si	Mn	Al
KP(Chromel)	90	10
KN(Alumel)	95		1-2	0.5-1.5	1-1.5

2.Ngā āhuatanga ā-tinana me ngā āhuatanga hangarau

Rauemi	Kiato (g/cm3)	Te pūwāhi rewaºC)	Kaha Kume (Mpa)	Ātete rōrahi (μΩ.cm)	Te tere whakaroa (%)
KP(Chromel)	8.5	1427	>490	70.6(20ºC)	>10
KN(Alumel)	8.6	1399	>390	29.4(20ºC)	>15

3.Te whānuitanga uara EMF i ngā pāmahana rerekē

Rauemi	Uara EMF Vs Pt(μV)
Rauemi	100ºC	200ºC	300ºC	400ºC	500ºC	600ºC
KP(Chromel)	2816~2896	5938~6018	9298~9378	12729~12821	16156~16266	19532~19676
KN(Alumel)	1218~1262	2140~2180	2849~2893	3600~3644	4403~4463	5271~5331

Uara EMF Vs Pt(μV)
700ºC	800ºC	900ºC	1000ºC	1100ºC
22845~22999	26064~26246	29223~29411	32313~32525	35336~35548
6167~6247	7080~7160	7959~8059	8807~8907	9617~9737

4.Momo, tohu me te momo o ngā thermocouples

Momo	Whakatūnga	Te honohono wera	Te honohono wera Tau Tohu
SC me RC	Nikara parahi-parahi 0.6 kua utua arataki utu	Platonic-rhodium 10-platinum Te honohono wera	S me R
SC me RC	Nikara parahi-parahi 0.6 kua utua arataki utu	Platonic-rhodium 13-platinum takirua wera	S me R
KCA	Nikara rino-parahi 22 Te utu utu Ārahi	Nikara-konukōmiuma nikara takirua wera	K
KCB	Te utu whakaea rino-parahi nikara 40 ārahi
KX	Nikara-konukōmiuma 10-nikara 3 roa taura utu / taura utu
NC	Rino-parahi nikara 18 te mata utunga utunga	Te whakamahana nikara-konukōmiuma silicon-nikara	N
NX	Nikara-konukōmiuma 14 silicon-nikara 4 roa taura utu / taura utu	Te whakamahana nikara-konukōmiuma silicon-nikara	N
EX	Nikara-konukōmiuma 10-nikara 45 roa taura utu / taura utu	Nikara-konukōmiuma-kapuronikara takirua wera	E
JX	Nikara rino-parahi 45 te utu whakaroa taura arai/taura whakakapi	Te whakamahana rino-pūmau	J
TX	Te whakamāmā roa o te rino-nikara-konukōmiuma 45 taura arai/taura whakakapi	Pūmau-parahi takirua wera	T