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混凝土應(yīng)變的測量
混凝土應(yīng)力的測量
混凝土溫度的測量
混凝土開合度測量
巖石應(yīng)變量的測量
鋼筋應(yīng)力值的測量
滲透水壓力的測量
測壓管水壓力測量
水庫水位值的測量
錨索預應(yīng)力的測量
靜荷載承壓力測量
結(jié)構(gòu)表面應(yīng)變測量
結(jié)構(gòu)位移量的測量
結(jié)構(gòu)傾斜量的測量
剛性構(gòu)件應(yīng)變測量
土體應(yīng)變量的測量
土體應(yīng)力值的測量
土體多點位移測量
土體多點沉降測量
土體分層沉降測量
地基多點位移測量
地基水平位移測量
地基垂直位移測量
自動采集測量數(shù)據(jù)
 
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Products
 

Virbrating Wire Surface Strain Gages

 

VWS-5F vibrating wire surface strain gauge (intelligent)

1.Purpose

     Vibrating wire surface strain gauge is suitable for long-term arrangement on the surface of hydraulic structures or other structures to measure the strain of structures and simultaneously measure the temperature of arrangement points.

     Vibrating wire surface strain gauge is of stainless steel structure, integrated design, anti rotation, anti bending, anti impact, anti drop, grounding and lightning protection, small elastic modulus, good follow-up with the measured structure, no interference with the original stress field, simple and reliable installation, and long-term working underwater.

 ?? All stainless steel structure, integrated design, anti rotation, anti bending, anti impact, grounding and lightning protection, long-term working underwater.

 ?? Surface strain gauge measurement system intelligent identification parameters, intelligent fault diagnosis, cloud platform mobile phone seamless docking.

2.Specifications and main technical parameters

Specification and modelVWS-5F
Dimension parameterMeasuring gauge distance L65mm 
End diameter D14mm 
Performance parameterStrain measurement rangeStretching1500???
Compress1500???
Sensitivity K0.4??? 
Fitting / end base accuracy0.1%F.S / 0.5%F.S
Measuring range-40?桫+80??
Sensitivity??0.1??
Temperature measurement accuracy??0.5??
Correction factor b12???/??
Elastic modulus Eg100MPa??150MPa
Water pressure resistance??0.5MPa
Insulation resistance??50M??

Note: Frequency modulus F=Hz2??10-3 


3.Structure

   Vibrating wire surface strain gauge consists of strain gauge, clamp and observation cable.


4.Working principle

   When the measured structural stress changes, the surface strain gauge senses the deformation synchronously, and the deformation is transferred to the vibrating string through the fixture, which is transformed into the change of vibrating string stress, thus changing the vibration frequency of vibrating string. The electromagnetic coil excites the vibrating string and measures its vibration frequency. The frequency signal is transmitted to the acquisition device through the cable, and then the strain of the measured structure can be measured, and the temperature value of the buried point can be measured simultaneously.

Surface strain gauge equipment
1
Calibration equipmentCalibration frame of SCS-1 strain sensor
2Calibration instrumentDigital multimeter
3Observation cableYSPT-4P Hydraulic cable
4Cable extensionGJ-1 Waterproof joint
5Measuring instrumentVW-102E Full function reader
6Centralized automatic measurementMCU-32 Distributed modular automatic measurement unit
7Distributed automatic measurementGDA16 Full function acquisition module
8Systems softwareCloud platform, data acquisition system software
9Installation accessoriesFixture


 
?oBack??
 
 

 NGN Instrument, Incorporated Email: njgn@njgn.com 
 26 Majiajie street Website: m.hldgxs.cn
 Nanjing, Jiangsu Tel??86(25)84443850/1/2/3
 CHINA 210009 Fax??025-58705973 
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