Seiko Instruments LTP F Series User Manual

The resistance of the thermistor at the operating temperature T

X 

(

°C) is determined using the following

equation (7).

Equation (7):

R

X

:

Resistance at operating temperature Tx (

°C)

R

25

:

30 k

Ω ± 5% (25°C)

B:

3950 K 

± 2 %

T

X

:

Operating temperature (

°C)

EXP (A) : The Ath power of natural logarithm e (2.71828)

[Rating]

Operating temperature range:  -40 

°C to +125 °C

1

10

100

0

10

20

30

40

50

60

70

80

90

100

‰ ·

“ x i Ž j

’ïR

’li

‚‹

Ħj

Figure 3-14  Thermistor Resistance vs. Temperature

     1

   1

R

X

=R

25 

× EXP          B ×

                  

−

                     

  273+T

X

         298

Res

is

tanc

e 

(k

Ω

)

Temperature (

°C)