MPC TEC 03-50, Руководство по эксплуатации, Страница: 20 / 71

MESSTEC Power Converter GmbH
Operating Manual
TEC Controller
Document: 10100920OM Revision: 1.1 Date: 10.10.2019 Page 20/71
5. Temperature sensor
The TEC-Controller has a very accurate and progressive sensor signal processing unit
onboard. This signal processing unit is able to accept RTD temperature sensors of al-
most any technology. Sensor interface wiring can be realized in a 2-wire or 4-wire sys-
tem.
Note:
For highest demands in temperature accuracy it is recommended to consider
an appropriate Pt1000 sensor in a 4-wire system.
For wiring details please see chapter "Wiring and connectors / Temperature Sensor X4".
The type of sensor applied in the setup can be configured by means of PC-Software.
Note:
The default sensor type is Pt1000.
5.1. Platinum Sensor
In the PC-Software Pt1000 and Pt100 Sensors are available. It is not necessary to
enter any coefficients, just press the button for the sensor in your application (see fi-
gure 12 below).
Fig. 12: Platinum sensor selection
Supplementary detailed information:
Platinum Sensors have a characteristic curve according to:
𝑅(𝜗) = 𝑅
𝜗0
∗ (1 + 𝑎 ∗ (𝜗 − 𝜗
0
) + 𝑏 ∗ (𝜗 − 𝜗
0
)
2
)
a = 3,9083 * 10
-3
* °C
-1
b = -5,775 * 10
-7
* °C
-2
ϑ:
Temperature in °C
ϑ
0
: Reference temperature in °C (
ϑ
0
= 0 °C for Platinum)
R
ϑ0
: Reference resistor value
in Ω (Pt1000: R
ϑ0
= 1000 Ω)