- Company : Xian Chuangjin Electronic Technology Co.,LTD
- Region : Shaanxi , China
- Category : Measurement & Analysis Instruments > Pressure Measuring Instruments
- Contact Person : Amber Zheng|||Sales
- Telephone :
- Fax :
- Mobile phone :
- Website : The 30th Floors,Kaixuan Massion,Xuanwu Road West,Weiyang Dis
- Email : [email protected]
- Instant Messenger : skype:cjtransmitter
- Update : Nov/26/2017
Product Details
Working principle The VW Piezometer operates on the principle that a tensioned wire, when plucked, vibrates at its resonant frequency. Around the wire is a magnetic coil which when pulsed by a vibrating readout or data logger interface plucks the wire and measures the resultant resonant frequency of vibration. A change in distance between the anchor and the diaphragm is related to pressure differentials and can be converted to a kPa reading. Temperature information can be used if logging regularly to determine swift temperature changes during which pressure readings may be exaggerated Features Reliable long-term performance Rugged, suitable for demanding environments High accuracy Insensitive to long cable lengths All non-drive-in models can have threaded adaptors to customer specifications Applications Pore pressure measurement in soils and rocks Fluid pressures in hydro-fracture and pump tests Structure Permeable ring +sensitive membrane+seal case+signal wire+vibration wire+strong vibration eletromagnetic Caculate When pore piezometer loads pressure of water, the voltage "P" and output frequency "F" as below : P = k?F20-F2i? K — Pressure Sensitivity Fi — Measurement F0— Reference Value
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