surface strain gauge
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Wuhan Zhongdi Hengda - Surface Strain Gauge
It plays a crucial role in data monitoring for engineering applications and belongs to the category of stress-strain instruments. Below are its parameter specifications:
Measuring Range | ±1500με/±3000με |
Accuracy | ＜1%F·S |
Resolution | ＜0.1%F·S |
Operating Temperature | -40℃~80℃ |
Temperature Measurement Accuracy | ±0.5℃ |
Gauge Length | 100mm |
Water Pressure Resistance | ＞0.2MPa |
Insulation Resistance | ＞50MΩ |
Typical Applications | Mainly used for strain measurement on various steel structures and concrete surfaces. It can be installed by welding or fixed to the structure surface with expansion bolts. |
Installation Fixture
When installing a surface strain gauge for long-term monitoring, first install the paired fixture test rods. During installation, the bottom surfaces of the two fixtures should be on the same plane, and the center-to-center distance between the fastening bolt holes of the two fixtures should be 100mm (the gauge length of the instrument). Use the 4 holes on the fixture with the test rods (mounting plate attached to the bottom of the fixture) to mark positions on the structure at the fixed points (monitoring points) of the instrument. Drill holes at the marked positions on the measured structure, install expansion bolts, then fix the fixture assembly with test rods onto the measured structure, completing the installation of the instrument fixture.
When installing a surface strain gauge for temporary measurement, the fixture is generally adhered to the measured structure with adhesive. First, level and roughen the area of the measured structure where the fixture is to be installed. Apply AB glue (fast-curing epoxy resin glue) to the middle of the bottom of the fixture with test rods (on the same plane), and apply 502 fast-curing glue around the periphery of the fixture. Immediately adhere the fixture to the leveled and roughened area of the measured structure, press firmly for about 2 minutes before releasing, and it will be firmly adhered in about 10 minutes.
Sensor Installation
After the fixture is fixed, gently remove the installation test rods, and insert the surface strain gauge from one end of the fixture until each end face of the surface strain gauge is flush with the outer edge of the fixture. When installing the surface strain gauge, adjust the measurement range (initial value) according to design requirements. The method is: there is a threaded hole on the front seat of each strain gauge, which can be adjusted by tension and compression using a special pull rod. During adjustment, first tighten the clamping screw at the end with the cable, connect the reading instrument to monitor the instrument, perform tension or compression adjustment using the adjustment pull rod. After adjustment is appropriate, tighten the fastening screw at the other end of the fixture, and remove the adjustment pull rod.
There are many types of stress-strain instruments. In addition to Wuhan Zhongdi Hengda - Surface Strain Gauge, there are also embedded strain gauges, etc.
| Industry Category | Chemicals/Catalysts & Additives/Surfactants |
|---|---|
| Product Category | |
| Brand: | 中地恒达 |
| Spec: | ZDHD-YBJ01 |
| Manufacturer: | 武汉中地恒达科技有限公司 |
| Origin: | 114201 |
