VW piezometers convert water pressure on the diaphragm to be measured into an equivalent frequency signal. The pressure on the diaphragm changed by fluid pressure causes a change in tension of the wire.
The wire excited by the plucking vibrates at its resonant frequency. The frequency signal transmitted through a cable to the readout.
Special stainless steel is used to minimize thermal zero shift in the frequency and the precision of the diaphragm is high when manufactured it.
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| Sensor element | : | Vibrating wire sensor |
| Range | : | 3.5~70kg/cm |
| Resolution | : | 0.025%FSR |
| Accuracy | : | 0.1% FSR |
| Nonlinearity | : | 0.5% FSR |
| Thermal zero shift | : | Less than 0.05%FSR/C |
| Operating Temperature | : | 040~80C |
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