Rainbow-electronics LM335A Manual do Utilizador descarregar pdf (Página 9)

Typical Applications (Continued)

Single Power Supply Cold Junction Compensation

DS005698-11

Select R3 and R4 for thermocouple type

THERMO- R3 R4 SEEBECK

COUPLE COEFFICIENT

J 1.05K 385Ω 52.3 µV/˚C

T 856Ω 315Ω 42.8 µV/˚C

K 816Ω 300Ω 40.8 µV/˚C

S 128Ω 46.3Ω 6.4 µV/˚C

Adjustments:

1. Adjust R1 for the voltage across R3 equal to the Seebeck Coefficient times ambient temperature in degrees Kelvin.

2. Adjust R2 for voltage across R4 corresponding to thermocouple

J 14.32 mV

T 11.79 mV

K 11.17 mV

S 1.768 mV

LM135/LM235/LM335, LM135A/LM235A/LM335A

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Rainbow-electronics LM335A Manual do Utilizador Página 9