The XPZ-02 frequency current converter can linearly convert pulse signals into a constant current of 4-20mA based on frequency components. It adopts a dedicated conversion chip internally, adds isolation between input and output, uses operational amplifiers and field-effect transistors to form a closed loop V/I conversion, and strictly screens the resistors and capacitors used, so it has good constant current characteristics and a conversion accuracy of 0.2 level. It forms a cooling pump speed detection device for nuclear power plants with SZMB-5T magneto electric speed sensor.

Input signal:

Waveform: sine wave

Amplitude: 0.2-20Vp-p

Frequency range: 0-930Hz

Input impedance: ≥ 100 KΩ

Output current: DC 4～20mA

Load resistance: 0-750 Ω

Power supply: 220V 50Hz

Power consumption: ≤ 5VA

Accuracy: 0.2 level

Environmental temperature: 0-70 ℃

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