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\n<\/div>\n\nA causa del ritardo di misurazione, l'ampiezza della fluttuazione della temperatura rilevata dalla termocoppia \u00e8 inferiore all'ampiezza della fluttuazione della temperatura del forno. Per misurare accuratamente la temperatura, \u00e8 necessario scegliere una termocoppia con una piccola costante di tempo. La costante di tempo \u00e8 inversamente proporzionale al coefficiente di trasferimento del calore. \u00c8 proporzionale al diametro dell'estremit\u00e0 calda della termocoppia, alla densit\u00e0 del materiale e al calore specifico. Se la costante di tempo deve essere ridotta, oltre al coefficiente termico, l'errore introdotto dall'isolamento della macchina di controllo integrato del freddo e del caldo \u00e8 scarso.<\/p>\n
La macchina di controllo integrata calda e fredda protegge il tubo e la piastra metallica da un'eccessiva sporcizia o da residui di sale, con conseguente scarso isolamento tra la termocoppia e la parete del forno, pi\u00f9 grave alle alte temperature, che non solo causa la perdita del potenziale termoelettrico ma introduce anche interferenze. L'errore causato da questa situazione pu\u00f2 talvolta raggiungere Baidu.<\/p>\n
I suddetti errori di installazione devono essere evitati il pi\u00f9 possibile per ridurre il tasso di errore della macchina di controllo integrata del calore e del freddo e risparmiare i costi operativi dell'impresa.<\/p>\n
Since the thermocouple’s thermal inertia causes the meter’s indicated value to lag behind the measured temperature, this effect is particularly pronounced when performing rapid measurements. Therefore, thermocouples with thinner thermal electrodes and smaller protective tube diameters should be used whenever possible. The protective tube can even be removed when the temperature measurement environment permits. 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