subject: Let Multimeter To Play A Greater Role In The Maintenance [print this page] Multimeter is Vehicle Maintenance An indispensable tool for technical staff. Multimeter functions very early one, only a simple current, voltage and resistance test function, which is the traditional "AV- " type of multimeter. The new multimeter can detect a large speed, dwell angle, duty cycle, frequency, pressure, time, capacitance, temperature, and other semiconductor components. With the various brands, different functions of the multimeter in Market The emergence of the people for this important detection tool in the purchase and use often into the errors in this analysis.
Multimeter in Service Play a greater role
Automotive Multimeter purchase Mistakes Multimeter repair industry in the application as a detection tool is more common, almost every need with a company, but many companies do not necessarily multimeter used to meet their actual needs.
1. Neglect on functional diversity of the matching accessories
Some more attention to the user in the purchase multimeter functional diversity, but easy to overlook the matching accessories. If the lack of the necessary accessories, functional diversity of naturally impossible. For example, some users want to buy a multimeter to detect the starting current, and can detect various conditions of temperature, but not the additional purchase of special current clamp and the thermometer probe. To give full play to the functions of an automotive multimeter, some matching accessories is critical. Some of these accessories which are necessary, more to do with auto multimeter to match the corresponding functions.
Automotive Multimeter with the attachment is usually in the following categories: inductive pickup device, battery alligator clips, SMD chip components dedicated test folder (for testing SMD resistors, capacitors, inductors, and transistors and other parameters, can be one-handed operation, so that measurement is more convenient), the current Sensor , Pressure transducer, torque transducer and IC probes. The attachment in the maintenance of less general application. On the maintenance of enterprises in the optional accessories, it should from the technical quality of the user, maintenance and daily use of state enterprise fund several considerations, be appropriately chosen to achieve maximum utilization of equipment.
2. Because of language barriers and give up the simple good equipment
Some users want to buy high-end imported cars multimeter, but found that after the interface language is English, they easily give up the functionality even more complete or high-end products, in fact no need for this. The basic functions of the various multimeter almost the same, and many features are identified by generic symbols, to use not complicated. As long as learning through simple, you can quickly learn to use.
Multimeter generally not been idle, but many functions in the maintenance has been underplayed.
1. For some function "unworthy"
Some repair personnel in the test for fear of damage to equipment is often not easy to use multimeter, the most obvious is the current test. Current testing methods are not complicated, as the starting current, ignition coil primary and secondary current, and injector current test, we can find a lot of trouble clues as diagnostic evidence, but the technical staff in the use of very little maintenance. It is understood that a lot of mechanics test misuse for fear of causing "burn table" or damage to the device under test do not dare to use the current test function, so "unworthy" is worth considering. In fact, many multimeter in order to protect integrated circuits, are designed specifically for circuit protection devices or mechanical devices. If more than one DY2201 multimeter in order to prevent misuse, of the current measurement jack mechanical protection devices, only in the choice of current measurement, the corresponding "mA" or "20A" jack will be opened. Otherwise they will be blocked baffle, so you can avoid the table document is misplaced. Maintenance personnel can boldly use the current test function, but must use the process to operate in accordance with.
2. Importance of the test error of less than
Any instrument in the measurement error will exist, but should minimize measurement errors, to avoid operational errors, in order to ensure the accuracy of measurements. Multimeter in use are often large errors, sometimes due to instrument, sometimes due to a number of human factors. The following two aspects need to attract the attention of maintenance personnel: As the multimeter's accuracy, resolution is not enough to judge if the estimate alone, often leads to human error. multimeter testing a variety of different tests in different signal multimeter will have to bring their own equipment error, so maintenance personnel when using the multimeter to make use of a high level of precision instrumentation, and testing in strict accordance with operational procedures, to the greatest extent reduce the error.
Let Multimeter To Play A Greater Role In The Maintenance
