Altimeter

The altimeter is an instrument placed on a platform for single-axis measurements, ideally a granite platform. The full-featured altimeter is mainly used for online or batch inspection, and is directly measured on one or a group of machine tools, especially for the debugging and sampling inspection of some dimensionally demanding workpieces in the production process.

First, the characteristics of the altimeter

The characteristics of the altimeter:
1. High precision. The general length error is about 2um, and the repeatability is about 0.5-1um.
2. Low cost. The price of a three-standard measuring instrument should be more than 100,000 or even more than one million, and an altimeter only needs about 20,000-80,000. Moreover, the maintenance cost is also low. Under the condition that the coordinate measuring machine is not equipped, the purchase of the altimeter can check most of the dimensional tolerances of the workpiece, which is a cost-effective, flexible and convenient metering scheme.
3. High reliability, sturdy and durable. If an altimeter is well maintained, it can be used for 5 or more years to maintain good accuracy without repair.
4. Convenient operation: Even if the inexperienced personnel only need to train for half a day, they can operate very well.

Second, the altimeter manufacturer

Sichuan Tutu Weiye Surveying and Mapping Technology Co., Ltd. is a high-tech company specializing in the sales, maintenance and technical guidance of surveying and mapping instruments. "Integrity, focus, innovation, development" is our business philosophy and service tenet.
Sichuan Tuotu Weiye Surveying and Mapping Technology Co., Ltd. specializes in the sales of measuring instruments and software. The company is a special distributor of Japan's Topcon, Swiss Leica, Japan Pentax, Japan Nikon and other well-known foreign brands of surveying and mapping instruments in Sichuan; Suzhou Yiguang, Beijing Bofei, Kelida, Changzhou Dadi and other domestic well-known brand instruments Sichuan agent Business. Since its establishment, the company's performance has continued to grow at a high speed. It has deployed a variety of instruments and equipment for the province's land, construction, water conservancy, electric power, highway, transportation, geology, survey and other industries, and played a very important role in Sichuan and even Southwest China. Established a good reputation and visibility.
Tutu Weiye constantly strengthens the construction of the sales team, and also keeps pace with the times and vigorously develops e-commerce. At present, the company has three subordinates operating stores, forming a complete pre-sales and after-sales service network. Advancing with the times, pioneering and innovating, in the days to come, Tutu Weiye will continue to maintain the business philosophy and service tenet of “integrity, dedication, innovation and development” and serve the national surveying and mapping business wholeheartedly.

Third, the use of altimeter

As a precision measuring instrument, the altimeter has extremely strict requirements on the calibration environment. Temperature, humidity, flat plate and block gauge will affect its accuracy. The correct operation method is also extremely important to ensure the accuracy of accuracy. In the usual instrument acceptance, the user often encounters that the accuracy of the altimeter is not good, which is actually caused by the wrong verification method.
Example: Take the marble plane as the measurement reference surface, and measure the standard block gauge to measure the 90 standard block gauge to get the value of 90.0052. Is the accuracy of the altimeter not good? No, because the measurement method is wrong.
The correct test method is to use the preset function of the altimeter to measure the standard block gauge to determine the measurement datum to eliminate the effects of uneven surface measurement, and then measure other standard block gauges. the way is:
1. Take the 30-block rule as an example, first use the preset function, preset the zero face to 30, you can consider adding the correction value of the block gauge.
2. Press F2 to enter the preset function and enter 30
3. Then press the enter button
4. Measure 30 block gauges and get the measured zero datum
5. Then measure the standard block gauge of 90 and get the result 90.0013
Analysis: Even with a 0-0 level flat panel, it also has its flatness. Our probe takes a single point to take a point, and it is inevitable that pits or bumps may be picked. This fine bump faces the altimeter. The accuracy impact is undoubtedly fatal. Using the plane of the standard block gauge as the 0 plane, this effect can be eliminated and the true accuracy of the instrument can be obtained.
This method is also suitable for use when measuring workpieces for a more accurate indication.

Fourth, the brand of altimeter

Altimeter brand: At present, the world's top brands are Swiss TESA, TRIMOS, of course, the price is also slightly more expensive. The two brands of altimeter models are also the most complete, from 1D to 2D, manual to automatic, small to large range, workshop and laboratory. Followed by Japan's Mitutoyo, Germany's Mahr, of course, their altimeter type is relatively small, only two or three types of specifications. The technology of some domestic brands is not mature enough, and the market competitiveness and market share have little advantage.