KT- and KTY-Series Temperature Sensors
General Technical Data: KT- and KTY-Series Temperature Sensors
These temperature sensors are designed for the measurement, control and regulation
of air, gases and liquids within the temperature range of − 50 °C to + 150 °C. The
temperature sensing element is an n-conducting silicon crystal in planar technology. The
gentle curvature of the characteristic, RT = f (TA), is described as a regression parabola
in the following expressions.
The resistance of the sensor can be calculated for various temperatures from the
following second order equation, valid over the temperature range − 30 °C to + 130 °C.
RT
=
R25
×
(1
+
α
×
∆T
A
+
β
×
∆T
2
A
)
=
f (TA)
with: α = 7.88 10− 3 K− 1; β = 1.937 10− 5 K− 2
The temperature factor kT can be derived from this:
kT
=
-R-----T-
R25
=
1
+
α
×
∆T
A
+
β
×
∆T
2
A
=
f (TA)
The temperature at the sensor can be calculated from the change in the sensors
resistance from the following equation, which approximates the characteristic curve.
T
=
25
+
-----α---2----–-----4----×-----β---2--+---×--4--β---×----β-----×-----k---T----–----α---
°C
Data Sheet
4
2000-07-01