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China's first full-touch welding machine field calibrator was successfully developed
[China Instrument Network Instrument Development] DC welding machine (hereinafter referred to as the welder) is widely used in the machining industry. The accuracy and stability of the output current and voltage value have a crucial influence on the welding quality of the device. Therefore, there is a large market demand for the detection and calibration of output current and voltage value of the welding machine.
At this stage, the on-site inspection of the welder in China is basically divided into two types: one is to verify the current and voltmeter of the welding machine through a DC standard voltage and current source, and the other is to perform a combination of a shunt and a digital multimeter or a combination of devices. Welder current and voltage verification. The disadvantages of these two verification methods are as follows: First, only the general analog instrument can be calibrated, and the digital instrument with A/D conversion function cannot be verified; second, the welder needs to be disassembled and the work efficiency is low; It is impossible to verify whether the current and voltage output value of the welder is consistent with the display value of the instrument. Fourth, the instrument or combination of equipment is too scattered and unwieldy, which is not conducive to on-site carrying. Fifth, the current and voltage cannot be verified at the same time, and the current is diverted. Current-limiting constraints, low measurement range, and relatively complex wiring methods impose high requirements on the technical capabilities of the verification personnel and are prone to wiring errors, which can cause damage to personnel and equipment.
In order to meet the requirements of the welding machine measurement in the company's export product technology, to ensure that the company's measuring equipment is accurate and reliable, and to help the company to improve the quality of products from the source, the professional technicians of the electric room of the Jining City, Shandong Province actively sum up the past welder inspection. The experience in the work, continuous efforts to learn, independently developed the country's first full-touch welding machine calibrator.
This product overcomes the shortcomings of the above traditional methods and has the following characteristics: Fast sampling speed, small size, and easy to carry; can be customized according to customer needs measurement range and scalable modules: voltage measurement range (0-100) V, maximum current measurement The range is divided into (0-400) A, (0-600) A, (0-800) A, (0-1000) A, (0-1200) A, (0-1500) A, (0- 2000) A; Unique terminal block, convenient for on-site calibration of wiring; Rotary contact socket, improve the fixed ability of the wiring and the contact area between conductors, effectively reduce safety accidents; 10-inch touch screen, more convenient operation, display more clearly .
Welder calibrator has obtained national patent. The development of the full touch-type welder field calibrator not only improves the work efficiency and reliability of the measurement results in field calibration, but also makes up for the blank of the calibration of the portable instrument on the spot of the welding machine, which has been recognized by enterprises and customers.
In recent years, the Institute of Metrology of Jining City has continuously researched and perfected the scientific research innovation incentive mechanism, stimulated the enthusiasm of professional and technical personnel to engage in scientific research work, guided all employees to establish an innovative concept of technology first, and timely summed up the experiences and practices in actual inspection work, delving into new Detection techniques and methods. The successful development of the full-touch electric welder on-site calibrator marks a new level of scientific research in the Institute of Metrology of Jining City.
(Original Title: Jining City Metrology Institute: Self-developed the nation's first full-touch welding spot calibrator)