Wiegand Sensor, Flow Meter, Flow Sensor, Wg215, Zero Power Consumption Sensor, Water Meter Sensor, Gas Meter Sensor, Level Sensor, Wiegand Sensor
- Bipolar excitation working mode, the sensor outputs a pair of positive and negative electrical pulse signal when the magnetic field polarity changes for a circle.
- The signal amplitude has nothing to do with the magnetic field changing speed, and it can work at the speed near to zero.
l No mechanic contact, no spark, is a kind of intrinsic safety devices.
- Wide operating temperature range, strong environmental adaptability.
- Principle outline
Zero power consumption sensor WG215 ( it also be called Wiegand Sensor) is a kind of new type magnetic component that is made based on Wiegand effect. It can initiative generate energy, no need external power when it works. It can give a sharp voltage pulse signal. The sensor consists of a special processed alloy wire and induction coil which winds on the outside of wire , framework and pins etc.
The alloy wire owns double magnetic structure, its core is soft magnet, and the shell is hard magnet. To utilize the magnetic difference between the alloy wire's inside and outside, under excitation by suitable strength of alternating magnetic field, the core magnetization direction everted in a moment, the direction became same or opposite with that of shell, and make the magnetic field around alloy wire changed suddenly, then a group of positive and negative pulse generated in the induction coil. The pulse amplitude is only regard with strength of the excitation field, and it has nothing to do with the field changing speed. It realized "Zero Speed" counting detection.
- Product Parameter
Parameter Symbol Min. Typ. Max. Unit Excitation magnetic field B 3 6 12 mT Pulse signal amplitude VO 1.5 V Pulse width τ 10 30 us DC resistor R 650 1000 Ω Operating frquency f - 10 kHz Operating Temp. B -20 125 ºC