Double Axis Strain Gauge, Four Grids Strain Gauges, Stress Analysis Strain Gauge manufacturer / supplier in China, offering Double Axis Four Grids Strain Gauges for Stress Analysis Bf350-Eb, Mini Water Pressure Sensor/Pressure Transducer, IP68 Submersible Liquid Level Sensor with Display and so on.
|Min. Order / Reference FOB Price||100 Pieces||US $3.5/ Piece|
|Payment Terms:||T/T, Western Union, Paypal|
|Strain Gauge Type:||Foil Type|
|Transport Package:||Inner Side Plastic Bags, Outside Carton Box|
If a strip of conductive metal is stretched, it will become skinnier and longer, both changes resulting in an increase of electrical resistance end-to-end. Conversely, if a strip of conductive metal is placed under compressive force (without buckling), it will broaden and shorten. If these stresses are kept within the elastic limit of the metal strip (so that the strip does not permanently deform), the strip can be used as a measuring element for physical force, the amount of applied force inferred from measuring its resistance.
Such a device is called a strain gauge. Strain gauges are frequently used in mechanical engineering research and development to measure the stresses generated by machinery. Aircraft component testing is one area of application, tiny strain-gauge strips glued to structural members, linkages, and any other critical component of an airframe to measure stress. Most strain gauges are smaller than a postage stamp.
Both half-bridge and full-bridge configurations grant greater sensitivity over the quarter-bridge circuit, but often it is not possible to bond complementary pairs of strain gauges to the test specimen. Thus, the quarter-bridge circuit is frequently used in strain measurement systems.
When possible, the full-bridge configuration is the best to use. This is true not only because it is more sensitive than the others, but because it is linear while the others are not. Quarter-bridge and half-bridge circuits provide an output (imbalance) signal that is only approximately proportional to applied strain gauge force. Linearity, or proportionality, of these bridge circuits is best when the amount of resistance change due to applied force is very small compared to the nominal resistance of the gauge(s). With a full-bridge, however, the output voltage is directly proportional to applied force, with no approximation (provided that the change in resistance caused by the applied force is equal for all four strain gauges!).
Unlike the Wheatstone and Kelvin bridges, which provide measurement at a condition of perfect balance and therefore function irrespective of source voltage, the amount of source (or "excitation") voltage matters in an unbalanced bridge like this. Therefore, strain gauge bridges are rated in millivolts of imbalance produced per volt of excitation, per unit measure of force. A typical example for a strain gauge of the type used for measuring force in industrial environments is 15 mV/V at 1000 pounds. That is, at exactly 1000 pounds applied force (either compressive or tensile), the bridge will be unbalanced by 15 millivolts for every volt of excitation voltage. Again, such a figure is precise if the bridge circuit is full-active (four active strain gauges, one in each arm of the bridge), but only approximate for half-bridge and quarter-bridge arrangements.
Strain gauges may be purchased as complete units, with both strain gauge elements and bridge resistors in one housing, sealed and encapsulated for protection from the elements, and equipped with mechanical fastening points for attachment to a machine or structure. Such a package is typically called a load cell.
Like many of the other topics addressed in this chapter, strain gauge systems can become quite complex, and a full dissertation on strain gauges would be beyond the scope of this book.
1. OEM/ODM Services:
Our company provides OEM/ODM services and Customized products services.
With know-how technique and mass production capability, we are able to provide the specified sensing solution according to customer's application.
What's your requirement?
2. Quality Quarantee
We quarantee product quality for one-year starting from the date of delivery.
Marketing under Our Brand "QYE"
Hanzhong Quan Yuan Electronic Co. Ltd is a professional high-tech enterprise that is committed to the research, development, design, manufacture and sale of load cells, high precision resistance strain gauges and pressure transmitters under the QuanYuan brand. They can be applied in the traditional force measurement field and are also widely used in the industrial automation production lines and metallurgical industry.
Meeting CE, RoHS and EX Requirements
As an ISO 9001:2008-certified company,all our electronic products have good performance and high quality because all products must be tested several times and they must undergo strict inspections before being dispatched from the factory. As a result, our load cells have passed CE and RoHS requirements and pressure transmitters have passed CE and EX standards.
Service Concept: Customer Satisfaction is Our Everlasting Pursuit
With several years' experience in manufacturing and selling load cells, strain gauges and pressure transmitters, we always adhere to our service concept of "customer satisfaction is our everlasting pursuit" and have built a professional team in sensor field to provide customers with first-class products, first-class services, first-class reputation and first-class principles.
Exporting to over 30 Countries Worldwide
With high quality and good service, our products have been exported to over 30 countries, which include the US as well as those in Europe, Southeast Asia, the Middle East and South America.
1. What is the MOQ?
For different product,the MOQ is different.But we can supply you samples.
2:How long will you give me the reply?
we will contact you in 12 hours as soon as we can.
3.How about the price?
As we believe the quality is the most important,we will provide the best quality product with reasonable price.
4:Could I visit your factory?
Of course,if you need we will help you to visit our factory.
5:If I have paid,when will you help me to produce?
When we have received the money in our account,we will give you the receipt and arrange to produce immediately.
6. What is lead time?
If we have it in stock, we can ship it to you within about 3-5 working days.
If we don't have it in stock, the lead time will be 10-30 days.
If the product is urgent,please tell us and we will try our best to satisfy you.
7. What is the payment terms?
All T/T, Western Union, L/C, Escrow,paypal are acceptable.
8. What is the express delivery?
DHL, Fedex, TNT ,EMS, UPS etc.
If you order large quantity products,the most economic shipping way will be by sea or by air transport.
9. What is the quality guarantee?
Quality guarantee: 12 months.
If the product has quality problem within 12 months, please return it to us, we will repair it; if we can't repair it successfully, we will give you a new one; but the man-made damage, improper operation and force majeure will be excepted.
And you will pay the shipping cost of returning to us, we will pay the shipping cost to you.
10. Is there any after-sale service?
After you receive our product, if you have any questions or need any assistance, we can provide you the after-sale service by e-mail,skype,trade manager,telephone and QQ etc.