Any instrumentation repair work is a technical job, and everyone's maintenance strategy may be different. However, Xi'an Antai maintenance editor would like to say that in fact, in the instrumentation maintenance work, there are many tricks, if you can use some tricks well, the maintenance work can be carried out in an orderly manner. There are many friends engaged in the instrumentation maintenance industry, but do you know what are the eight guidelines for instrumentation maintenance? Let's follow Liu Gong, a senior spectrum analyzer maintenance engineer at Antai, to learn about the eight guidelines for instrumentation maintenance, and the subtlety can help everyone!
1. "Easy before difficult": Solve the easier problems first, and then gradually deal with the more difficult faults.
When a fault occurs, especially in the event of a more complex comprehensive fault, Xi'an Atai Instrumentation Maintenance Center Xiaobian suggests that for solving this fault should first start with a relatively easy fault to solve, such as: overhaul the circuit board of the instrument, you should first check the resistance, capacitance, inductance, diode, transistor, fuse, connector, indicator, switch, etc., after eliminating the failure of these components, then check the integrated circuit, high power tube, power module, special sensor, microprocessor IC, interface IC, memory IC, etc.
2. "Simplify first and then be complex", start with simple devices or parts, and then enter complex and cumbersome circuits or lines.
When repairing the circuit, according to the circuit principle of the instrument, start with a simple circuit, such as the indicator light is not lit, the key fails or the contact is poor, the voltage ammeter does not indicate or indicates abnormality, the power plug socket is loose, whether the fuse is blown, whether the switch contact is reliable, etc. On this basis, further maintenance of complex and cumbersome main circuits or lines, such as transformers, relays, contactors, solenoid valves, overvoltage (voltage limiting) protection switches, flow sensors and other main control circuits or lines.
3. "Soft first and then hard", first check whether the software program is running normally, and then analyze whether there is a problem with the hardware operation.
With the development of the level of science and technology, the computer is applied in the application, so that the detection level of the instrument is greatly improved, the function is closer to intelligence, many faults are through the computer's own fault diagnosis program, comprehensive and comprehensive detection, such as when the instrument shows vacuum defects, temperature abnormalities, pressure abnormalities, no integral signals, communication interruptions and other displays, Xi'an Aetna Instrumentation Maintenance Center Xiaobian believes that we must be on this basis, along the abnormal information indicated by the computer, to check the corresponding hardware, In this way, the root cause of the fault can be found quickly, the maintenance time can be shortened, and the work efficiency can be improved.
4. "First outside and then inside", first check the peripheral facilities of the instrument, and then check the instrument itself.
The instrument suddenly the whole machine power failure does not work, first check the peripheral situation of the instrument, such as whether the cooling water is interrupted, whether the pump or sluice valve is abnormal, whether the gas or auxiliary gas pressure is low or too high, whether the solenoid valve loses power or breaks the circuit, whether the electrical switch or air switch trip, whether the external connector falls off, etc. Then look for problems inside the instrument itself.
5. "First assist and then master", first solve the problem of instrument auxiliary equipment, and then solve the problem of the main equipment of the instrument.
Large-scale instruments are often a complete set of systems, there are many auxiliary equipment for its services, when the instrument system fails, Xi'an Antai Instrumentation Maintenance Center Xiaobian reminds everyone that you should first check the computer, printer, regulator, vacuum pump, air compressor and other auxiliary facilities intact, and then look at the operation of the instrument host, so as to ensure the complete and normal operation of the entire instrument system.
6. "First people before the machine", first eliminate human error, in the inspection of the work of the instrument.
Any instrument is operated by people, so when the instrument has data errors or abnormalities, first determine whether there is a human problem, such as whether to enter the wrong data during the operation of the program, hit the wrong keyboard, click the wrong mouse, adjust the wrong barometer or flowmeter indication, forget to open or open a switch, see some signs and so on. On the basis of strictly following the operating procedures and eliminating human error, there is a problem with its own operation.
7. "First the main and then the second", that is, first to solve the main contradiction, and then to solve the secondary contradiction.
Solve the main problem first, let the instrument work, and then solve the secondary problem to improve the functions of the instrument. For example, sometimes the data measured by the instrument is not very accurate and reliable, indicating that there are some hidden dangers or failures in the instrument, some faults are to be diagnosed in the case of the instrument powered on, the instrument can not be powered on, some faults can not be judged, especially now many of the faults of the instrument are automatically diagnosed through computer programs. So only let the host work first, and repair minor failures other than the host (or auxiliary), including some auxiliary functions that have little impact on the host.
8. "First static and then move", first check the static devices and parameters, and then check the dynamic devices and parameters.
Some devices and parameters are working at static, such as switch on-off, resistance value, capacitance capacity, circuit operating point, pressure limit valve contact, overvoltage and overcurrent protection contact, etc., these devices and parameters can be directly measured, inspection is relatively easy, so you can first carry out intuitive inspection. Xi'an Antai Instrumentation Maintenance Center Xiaobian finally prompted everyone that for some dynamic data such as voltage, current, pressure, flow, temperature, humidity, data communication, etc., after eliminating static components or parameters without abnormality, and then carry out dynamic data (parameters) inspection, this work is generally carried out in the instrument boot state.
Xi'an Antai maintenance mainly does instrumentation maintenance, leasing and second-hand sales business, such as spectrum analyzer maintenance, spectrum meter maintenance, network analyzer maintenance, Keise Lee source meter maintenance, RF signal source maintenance, signal generator maintenance, oscilloscope maintenance, AR power amplifier maintenance, Stanford lock-in amplifier maintenance, Tektronix instrument maintenance, thermal imaging camera maintenance, power supply maintenance, instrument maintenance, source meter maintenance, instrument leasing, second-hand instrument sales and other services, if you need, you can contact at any time!