Facts |
Transmitter for Pt100 temperature sensors, 2- or 4-wire connection |
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Fixed range models for 0 to 150 °C, 0 to 200 °C and 0 to 300 °C input ranges |
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Impressed output current of 4 to 20 mA |
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Compact 67.5 and 22.5 mm modular housings based on proven VariTrans technology |
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High isolation up to 6 kV AC/DC basic insulation and up to 2.5 kV AC/DC reinforced insulation with overvoltage category III and pollution degree 2 according to EN 50178 (input against output and power supply) |
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22.5 mm housing for less demanding isolation requirements up to 2 kV AC/DC (basic insulation) |
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Low measurement error of just ± 1 K (typically ± 0.5 K) and short T90 delay time of 100 ms |
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VariPower broad-range power supply for 20 … 253 V AC/DC ensures safe operation even with unstable power grids |
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Resistant to environmental influences through vacuum encapsulation |
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Suitable for extreme environments: ambient temperature during operation –40 … +85 °C |
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5-year warranty |
Precise Temperature Measurement at High Voltage Potentials up to 6 kV |
When temperatures are to be measured using Pt100 resistance thermometers in high-voltage environments, standard temperature transmitters are often unsuitable due to their insufficient insulation. |
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Resistance thermometers can be insulated against high voltage. In practice, however, the available installation space is often too small. Moreover, the insulation is weakened by thermal and mechanical aging. |
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For temperature measurement on power electronics components, maximum safety is therefore provided by high-voltage resistant galvanic isolation. A typical application is the monitoring of the winding temperature of electric motors, generators or transformers. |
The Solution: Pt100 Transmitter With 6 kV AC/DC Basic Insulation |
The new ProLine P 44000 transmitter for high-voltage applications converts the resistance of a 2- or 4-wire Pt100 resistance thermometer into a 4 to 20 mA signal with high accuracy and short delay times. |
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The output signal is galvanically isolated from the input signal and the voltage supply. The isolation is designed for working voltages of up to 6 kV AC/DC. During routine testing, the test voltage is 15 kV AC. Vacuum encapsulation protects the circuit against environmental influences and ensures that the extraordinary isolation properties are maintained. |
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The product line covers the standard ranges of 0 to 150 °C, 0 to 200 °C and 0 to 300 °C. The transmitters are available in 67.5 and 22.5 mm modular housings to suit different requirements. |