IL135Z Просмотр технического описания (PDF) - IK Semicon Co., Ltd

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IL135Z

Integrated circuit of temperature sensor

IK Semicon Co., Ltd 

IL135Z

IL135Z

Thermo

couple

R3

Thermo electrical

coefficient

J

377 Оhm 52,3 µV/оС

T

308 Оhm 42,8 µV/оС

K

293 Оhm 40,8 µV/оС

S

45,8 Оhm 6,4 µV/оС

Adjustment: compensation of sensor and resistor

tolerances

1 Selection of 1N4568

2 Adjustment of voltage drop on element R3 by the

resistor R1 to obtain the value of thermoelectrical

coefficient, multiplied by the ambient temperature

(in K degrees).

3 Selection of IL135Z and adjustment of R2 for

setting voltage drop on the element R3 according to

thermocouple type

J – 14,32 mV K – 11,17 mV

T – 11,79 mV S – 1,768 mV

Figure 22 – Circuit of cold junction compensation (compensation for ground thermocouple)

*Value of R3 nominal for this thermocouple type

IL135Z

Thermo-

couple

J

R3

1050

Оhm

R4

365 Оhm

Тhermoelectrical

coefficient

52,3 µV/оС

T

856 Оhm 315 Оhm

42,8 µV/оС

K

816 Оhm 300 Оhm

40,8 µV/оС

S

128 Оhm 46,3 Оhm 6,4 µV/оС

Adjustment: compensation of sensor and resistor tolerances

1 Adjustment by the resistor R1 for obtaining voltage drop on

the element R3, equal to thermoelectrical coefficient multiplied

by the ambient temperature (in K degrees)

2 Adjustment of the resistor R2 for obtaining some voltage

drop on the element R4 according to thermocouple type

J – 14,32 mV K – 11,17 mV

T – 11,79 mV S – 1,768 mV

Figure 23 – Circuit of cold junction compensation with unipolar supply

*Value of R3 and R4 nominals for this thermocouple type

9

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