Thermal Therapy - RF/Microwave Interaction with Biological Tissues - page 182

80

E

J

70

60

K

50

40

30

R
S
B

T

20

10

0

R

S

-200

T
J
E

-10

Temperature (°C)

FIGURE 4.32 Example of relation between thermoelectromotive force and

temperature.

TABLE 4.1 Examples of Thermocouple Materials

Materials

Type of

Thermocouple Positive Negative

B Rhodium 30%; the rest platinum Rhodium 6%; the rest platinum

R Rhodium 13%; the rest platinum Platinum

(PR) Rhodium 12.8%; the rest Platinum

platinum

S Rhodium 10%; the rest platinum Platinum

K(CA) Chromium 10%; the rest nickel Aluminum, manganese, silicon,

etc.; the rest a little nickel

E(CRC) Chromium 10%; the rest nickel Nickel 45%; the rest copper

(constantan)

J(IC) Iron Nickel 45%; the rest copper

(constantan)

T(CC) Copper Nickel 45%; the rest copper

(constantan)