混凝土应变的测量
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混凝土温度的测量
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岩石应变量的测量
钢筋应力值的测量
渗透水压力的测量
测压管水压力测量
水库水位值的测量
锚索预应力的测量
静荷载承压力测量
结构表面应变测量
结构位移量的测量
结构倾斜量的测量
刚性构件应变测量
土体应变量的测量
土体应力值的测量
土体多点位移测量
土体多点沉降测量
土体分层沉降测量
地基多点位移测量
地基水平位移测量
地基垂直位移测量
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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 rangeStretching1500̦
Compress1500̦
Sensitivity K0.4̦ 
Fitting / end base accuracy0.1%F.S / 0.5%F.S
Measuring range-40桫+80
Sensitivity0.1
Temperature measurement accuracy0.5
Correction factor b12̦/
Elastic modulus Eg100MPa150MPa
Water pressure resistance0.5MPa
Insulation resistance50M

Note: Frequency modulus F=Hz210-3 


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


 
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